Pub Date : 2024-10-29DOI: 10.1007/s00299-024-03359-9
Hannah Levengood, Yun Zhou, Cankui Zhang
The ability to efficiently genetically modify plant species is crucial, driving the need for innovative technologies in plant biotechnology. Existing plant genetic transformation systems include Agrobacterium-mediated transformation, biolistics, protoplast-based methods, and nanoparticle techniques. Despite these diverse methods, many species exhibit resistance to transformation, limiting the applicability of most published methods to specific species or genotypes. Tissue culture remains a significant barrier for most species, although other barriers exist. These include the infection and regeneration stages in Agrobacterium, cell death and genomic instability in biolistics, the creation and regeneration of protoplasts for protoplast-based methods, and the difficulty of achieving stable transformation with nanoparticles. To develop species-independent transformation methods, it is essential to address these transformation bottlenecks. This review examines recent advancements in plant biotechnology, highlighting both new and existing techniques that have improved the success rates of plant transformations. Additionally, several newly emerged plant model systems that have benefited from these technological advancements are also discussed.
{"title":"Advancements in plant transformation: from traditional methods to cutting-edge techniques and emerging model species.","authors":"Hannah Levengood, Yun Zhou, Cankui Zhang","doi":"10.1007/s00299-024-03359-9","DOIUrl":"https://doi.org/10.1007/s00299-024-03359-9","url":null,"abstract":"<p><p>The ability to efficiently genetically modify plant species is crucial, driving the need for innovative technologies in plant biotechnology. Existing plant genetic transformation systems include Agrobacterium-mediated transformation, biolistics, protoplast-based methods, and nanoparticle techniques. Despite these diverse methods, many species exhibit resistance to transformation, limiting the applicability of most published methods to specific species or genotypes. Tissue culture remains a significant barrier for most species, although other barriers exist. These include the infection and regeneration stages in Agrobacterium, cell death and genomic instability in biolistics, the creation and regeneration of protoplasts for protoplast-based methods, and the difficulty of achieving stable transformation with nanoparticles. To develop species-independent transformation methods, it is essential to address these transformation bottlenecks. This review examines recent advancements in plant biotechnology, highlighting both new and existing techniques that have improved the success rates of plant transformations. Additionally, several newly emerged plant model systems that have benefited from these technological advancements are also discussed.</p>","PeriodicalId":20204,"journal":{"name":"Plant Cell Reports","volume":null,"pages":null},"PeriodicalIF":5.3,"publicationDate":"2024-10-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142522752","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"生物学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2024-10-29DOI: 10.1007/s00299-024-03361-1
Guyin Lin, Pirui Li, Linwei Li, Ruyuan Wang, Wanli Zhao, Mei Tian, Junzhi Wu, Shu Xu, Yu Chen, Xu Feng
Key message: Based on transport inhibition and genome-wide analysis, 123 ABC transporters of Euphorbia lathyris were identified, and it was found that the PDR family members ElABCG39 mediated ingenol efflux. Identification of ingenol biosynthetic enzymes and transporters in plant is fundamental to realize its biosynthesis in chassis cells. At present, several key enzymes of the ingenol biosynthesis pathway have been identified, while the mechanisms governing the accumulation or transport of ingenol to distinct plant tissue compartments remain elusive. In this study, transport inhibition analyses were performed, along with genome-wide identification of 123 genes encoding ABC proteins in Euphorbia lathyris L., eventually discovering that a PDR transporter ElABCG39 mediates ingenol transmembrane transport and is localized on the plasma membrane. Expression of this protein in yeast AD1-8 promoted the transmembrane efflux of ingenol with strong substrate specificity. Furthermore, in ElABCG39 RNAi transgenic hairy roots, ingenol transmembrane efflux was significantly reduced and hairy root growth was inhibited. The discovery of the first Euphorbia macrocyclic diterpene transporter ElABCG39 has not only further improved the ingenane diterpenoid biosynthesis regulatory network, but also provided a new key element for ingenol production in chassis cells.
{"title":"Discovery of ElABCG39: a key player in ingenol transmembrane efflux identified through genome-wide analysis of ABC transporters in Euphorbia lathyris L.","authors":"Guyin Lin, Pirui Li, Linwei Li, Ruyuan Wang, Wanli Zhao, Mei Tian, Junzhi Wu, Shu Xu, Yu Chen, Xu Feng","doi":"10.1007/s00299-024-03361-1","DOIUrl":"https://doi.org/10.1007/s00299-024-03361-1","url":null,"abstract":"<p><strong>Key message: </strong>Based on transport inhibition and genome-wide analysis, 123 ABC transporters of Euphorbia lathyris were identified, and it was found that the PDR family members ElABCG39 mediated ingenol efflux. Identification of ingenol biosynthetic enzymes and transporters in plant is fundamental to realize its biosynthesis in chassis cells. At present, several key enzymes of the ingenol biosynthesis pathway have been identified, while the mechanisms governing the accumulation or transport of ingenol to distinct plant tissue compartments remain elusive. In this study, transport inhibition analyses were performed, along with genome-wide identification of 123 genes encoding ABC proteins in Euphorbia lathyris L., eventually discovering that a PDR transporter ElABCG39 mediates ingenol transmembrane transport and is localized on the plasma membrane. Expression of this protein in yeast AD1-8 promoted the transmembrane efflux of ingenol with strong substrate specificity. Furthermore, in ElABCG39 RNAi transgenic hairy roots, ingenol transmembrane efflux was significantly reduced and hairy root growth was inhibited. The discovery of the first Euphorbia macrocyclic diterpene transporter ElABCG39 has not only further improved the ingenane diterpenoid biosynthesis regulatory network, but also provided a new key element for ingenol production in chassis cells.</p>","PeriodicalId":20204,"journal":{"name":"Plant Cell Reports","volume":null,"pages":null},"PeriodicalIF":5.3,"publicationDate":"2024-10-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142546875","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"生物学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Key message: Melatonin and melatonin-mediated phytohormonal crosstalk play a multifaceted role in improving drought stress tolerance via molecular mechanisms and biochemical interactions in horticultural plants. The physical, physiological, biochemical, and molecular characteristics of plants are all affected by drought stress. Crop yield and quality eventually decline precipitously as a result. A phytohormone, melatonin, controls several plant functions during drought stress. However, the interactions between melatonin and other phytohormones, particularly how they control plant responses to drought stress, have not been clearly explored. This review explores the effects of melatonin and particular phytohormones on improving plant tolerance to drought stress. Specifically, the key melatonin roles in improved photosynthetic performance, better antioxidant activities, up-regulated gene expression, increased plant growth, and yield, etc., during drought stress have been elucidated in this review. Furthermore, this review explains how the intricate networks of melatonin-mediated crosstalk phytohormones, such as IAA, BR, ABA, GA, JA, CK, ET, SA, etc., enable horticultural plants to tolerate drought stress. Thus, this research provides a better understanding of the role of phytohormones, mainly melatonin, elucidates phytohormonal cross-talks in drought stress response, and future perspectives of phytohormonal contributions in plant improvements including engineering plants for better drought stress tolerance via targeting melatonin interactions.
{"title":"Enhancing drought stress tolerance in horticultural plants through melatonin-mediated phytohormonal crosstalk.","authors":"Raphael Dzinyela, Delight Hwarari, Kwadwo Nketia Opoku, Liming Yang, Ali Movahedi","doi":"10.1007/s00299-024-03362-0","DOIUrl":"https://doi.org/10.1007/s00299-024-03362-0","url":null,"abstract":"<p><strong>Key message: </strong>Melatonin and melatonin-mediated phytohormonal crosstalk play a multifaceted role in improving drought stress tolerance via molecular mechanisms and biochemical interactions in horticultural plants. The physical, physiological, biochemical, and molecular characteristics of plants are all affected by drought stress. Crop yield and quality eventually decline precipitously as a result. A phytohormone, melatonin, controls several plant functions during drought stress. However, the interactions between melatonin and other phytohormones, particularly how they control plant responses to drought stress, have not been clearly explored. This review explores the effects of melatonin and particular phytohormones on improving plant tolerance to drought stress. Specifically, the key melatonin roles in improved photosynthetic performance, better antioxidant activities, up-regulated gene expression, increased plant growth, and yield, etc., during drought stress have been elucidated in this review. Furthermore, this review explains how the intricate networks of melatonin-mediated crosstalk phytohormones, such as IAA, BR, ABA, GA, JA, CK, ET, SA, etc., enable horticultural plants to tolerate drought stress. Thus, this research provides a better understanding of the role of phytohormones, mainly melatonin, elucidates phytohormonal cross-talks in drought stress response, and future perspectives of phytohormonal contributions in plant improvements including engineering plants for better drought stress tolerance via targeting melatonin interactions.</p>","PeriodicalId":20204,"journal":{"name":"Plant Cell Reports","volume":null,"pages":null},"PeriodicalIF":5.3,"publicationDate":"2024-10-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142522753","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"生物学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2024-10-25DOI: 10.1007/s00299-024-03346-0
V Edwin Hillary, S Antony Ceasar
Clustered regularly interspaced short palindromic repeats (CRISPR) and CRISPR-associated protein 9 (CRISPR/Cas9) genome-editing system has altered plant research by allowing for targeted genome alteration, and they are emerging as powerful tools for evaluating plant gene function and improving crop yield. Even though CRISPR/Cas9 cleavage and subsequent repair are effective ways to precisely replace genes and change base pairs in plants, the dominance of the non-homologous end-joining pathway (NHEJ) and homology-directed repair's (HDR) poor effectiveness in plant cells have restricted their use. Base editing is gaining popularity as a potential alternative to HDR or NHEJ-mediated replacement, allowing for precise changes in the plant genome via programmed conversion of a single base to another without the need for a donor repair template or double-stranded breaks. In this review, we primarily present the mechanisms of base-editing system, including their distinct types such as DNA base editors (cytidine base editor and adenine base editor) and RNA base editors discovered so far. Next, we outline the current potential applications of the base-editing system for crop improvements. Finally, we discuss the limitations and potential future directions of the base-editing system in terms of improving crop quality. We hope that this review will enable the researcher to gain knowledge about base-editing tools and their potential applications in crop improvement.
{"title":"CRISPR/Cas system-mediated base editing in crops: recent developments and future prospects.","authors":"V Edwin Hillary, S Antony Ceasar","doi":"10.1007/s00299-024-03346-0","DOIUrl":"https://doi.org/10.1007/s00299-024-03346-0","url":null,"abstract":"<p><p>Clustered regularly interspaced short palindromic repeats (CRISPR) and CRISPR-associated protein 9 (CRISPR/Cas9) genome-editing system has altered plant research by allowing for targeted genome alteration, and they are emerging as powerful tools for evaluating plant gene function and improving crop yield. Even though CRISPR/Cas9 cleavage and subsequent repair are effective ways to precisely replace genes and change base pairs in plants, the dominance of the non-homologous end-joining pathway (NHEJ) and homology-directed repair's (HDR) poor effectiveness in plant cells have restricted their use. Base editing is gaining popularity as a potential alternative to HDR or NHEJ-mediated replacement, allowing for precise changes in the plant genome via programmed conversion of a single base to another without the need for a donor repair template or double-stranded breaks. In this review, we primarily present the mechanisms of base-editing system, including their distinct types such as DNA base editors (cytidine base editor and adenine base editor) and RNA base editors discovered so far. Next, we outline the current potential applications of the base-editing system for crop improvements. Finally, we discuss the limitations and potential future directions of the base-editing system in terms of improving crop quality. We hope that this review will enable the researcher to gain knowledge about base-editing tools and their potential applications in crop improvement.</p>","PeriodicalId":20204,"journal":{"name":"Plant Cell Reports","volume":null,"pages":null},"PeriodicalIF":5.3,"publicationDate":"2024-10-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142506400","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"生物学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2024-10-23DOI: 10.1007/s00299-024-03358-w
Silas P Rodrigues, Eduardo de A Soares, Tathiana F Sá Antunes, Marlonni Maurastoni, Leidy J Madroñero, Sabrina G Broetto, Lucas E C Nunes, Brunno R F Verçoza, David S Buss, Diolina M Silva, Juliany C F Rodrigues, José A Ventura, Patricia M B Fernandes
Key message: The proteomic analysis of PMeV-complex-infected C. papaya unveiled proteins undergoing modulation during the plant's development. The infection notably impacted processes related to photosynthesis and cell wall dynamics. The development of Papaya Sticky Disease (PSD), caused by the papaya meleira virus complex (PMeV-complex), occurs only after the juvenile/adult transition of Carica papaya plants, indicating the presence of tolerance mechanisms during the juvenile development phase. In this study, we quantified 1609 leaf proteins of C. papaya using a label-free strategy. A total of 345 differentially accumulated proteins were identified-38 at 3 months (juvenile), 130 at 4 months (juvenile/adult transition), 160 at 7 months (fruit development), and 17 at 9 months (fruit harvesting)-indicating modulation of biological processes at each developmental phase, primarily related to photosynthesis and cell wall remodeling. Infected 3- and 4-mpg C. papaya exhibited an accumulation of photosynthetic proteins, and chlorophyll fluorescence results suggested enhanced energy flux efficiency in photosystems II and I in these plants. Additionally, 3 and 4-mpg plants showed a reduction in cell wall-degrading enzymes, followed by an accumulation of proteins involved in the synthesis of wall precursors during the 7 and 9-mpg phases. These findings, along with ultrastructural data on laticifers, indicate that C. papaya struggles to maintain the integrity of laticifer walls, ultimately failing to do so after the 4-mpg phase, leading to latex exudation. This supports initiatives for the genetic improvement of C. papaya to enhance resistance against the PMeV-complex.
{"title":"Juvenile-related tolerance to papaya sticky disease (PSD): proteomic, ultrastructural, and physiological events.","authors":"Silas P Rodrigues, Eduardo de A Soares, Tathiana F Sá Antunes, Marlonni Maurastoni, Leidy J Madroñero, Sabrina G Broetto, Lucas E C Nunes, Brunno R F Verçoza, David S Buss, Diolina M Silva, Juliany C F Rodrigues, José A Ventura, Patricia M B Fernandes","doi":"10.1007/s00299-024-03358-w","DOIUrl":"https://doi.org/10.1007/s00299-024-03358-w","url":null,"abstract":"<p><strong>Key message: </strong>The proteomic analysis of PMeV-complex-infected C. papaya unveiled proteins undergoing modulation during the plant's development. The infection notably impacted processes related to photosynthesis and cell wall dynamics. The development of Papaya Sticky Disease (PSD), caused by the papaya meleira virus complex (PMeV-complex), occurs only after the juvenile/adult transition of Carica papaya plants, indicating the presence of tolerance mechanisms during the juvenile development phase. In this study, we quantified 1609 leaf proteins of C. papaya using a label-free strategy. A total of 345 differentially accumulated proteins were identified-38 at 3 months (juvenile), 130 at 4 months (juvenile/adult transition), 160 at 7 months (fruit development), and 17 at 9 months (fruit harvesting)-indicating modulation of biological processes at each developmental phase, primarily related to photosynthesis and cell wall remodeling. Infected 3- and 4-mpg C. papaya exhibited an accumulation of photosynthetic proteins, and chlorophyll fluorescence results suggested enhanced energy flux efficiency in photosystems II and I in these plants. Additionally, 3 and 4-mpg plants showed a reduction in cell wall-degrading enzymes, followed by an accumulation of proteins involved in the synthesis of wall precursors during the 7 and 9-mpg phases. These findings, along with ultrastructural data on laticifers, indicate that C. papaya struggles to maintain the integrity of laticifer walls, ultimately failing to do so after the 4-mpg phase, leading to latex exudation. This supports initiatives for the genetic improvement of C. papaya to enhance resistance against the PMeV-complex.</p>","PeriodicalId":20204,"journal":{"name":"Plant Cell Reports","volume":null,"pages":null},"PeriodicalIF":5.3,"publicationDate":"2024-10-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142506401","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"生物学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2024-10-23DOI: 10.1007/s00299-024-03351-3
Sudesh Chhikara, Yogita Singh, Stephanie Long, Rakesh Minocha, Craig Musante, Jason C White, Om Parkash Dhankher
Key message: Transgenic Crambe abyssinica lines overexpressing γ-ECS significantly enhance tolerance to and accumulation of toxic metal(loid)s, improving phytoremediation potential and offering an effective solution for contaminated soil management. Phytoremediation is an attractive environmental-friendly technology to remove metal(loid)s from contaminated soils and water. However, tolerance to toxic metals in plants is a critical limiting factor. Transgenic Crambe abyssinica lines were developed that overexpress the bacterial γ-glutamylcysteine synthetase (γ-ECS) gene to increase the levels of non-protein thiol peptides such as γ-glutamylcysteine (γ-EC), glutathione (GSH), and phytochelatins (PCs) that mediate metal(loid)s detoxification. The present study investigated the effect of γ-ECS overexpression on the tolerance to and accumulation of toxic As, Cd, Pb, Hg, and Cr supplied individually or as a mixture of metals. Compared to wild-type plants, γ-ECS transgenics (γ-ECS1-8 and γ-ECS16-5) exhibited a significantly higher capacity to tolerate and accumulate these elements in aboveground tissues, i.e., 76-154% As, 200-254% Cd, 37-48% Hg, 26-69% Pb, and 39-46% Cr, when supplied individually. This is attributable to enhanced production of GSH (82-159% and 75-87%) and PC2 (27-33% and 37-65%) as compared to WT plants under AsV and Cd exposure, respectively. The levels of Cys and γ-EC were also increased by 56-67% and 450-794% in the overexpression lines compared to WT plants under non-stress conditions, respectively. This likely enhanced the metabolic pathway associated with GSH biosynthesis, leading to the ultimate synthesis of PCs, which detoxify toxic metal(loid)s through chelation. These findings demonstrate that γ-ECS overexpressing Crambe lines can be used for the enhanced phytoremediation of toxic metals and metalloids from contaminated soils.
{"title":"Overexpression of bacterial γ-glutamylcysteine synthetase increases toxic metal(loid)s tolerance and accumulation in Crambe abyssinica.","authors":"Sudesh Chhikara, Yogita Singh, Stephanie Long, Rakesh Minocha, Craig Musante, Jason C White, Om Parkash Dhankher","doi":"10.1007/s00299-024-03351-3","DOIUrl":"10.1007/s00299-024-03351-3","url":null,"abstract":"<p><strong>Key message: </strong>Transgenic Crambe abyssinica lines overexpressing γ-ECS significantly enhance tolerance to and accumulation of toxic metal(loid)s, improving phytoremediation potential and offering an effective solution for contaminated soil management. Phytoremediation is an attractive environmental-friendly technology to remove metal(loid)s from contaminated soils and water. However, tolerance to toxic metals in plants is a critical limiting factor. Transgenic Crambe abyssinica lines were developed that overexpress the bacterial γ-glutamylcysteine synthetase (γ-ECS) gene to increase the levels of non-protein thiol peptides such as γ-glutamylcysteine (γ-EC), glutathione (GSH), and phytochelatins (PCs) that mediate metal(loid)s detoxification. The present study investigated the effect of γ-ECS overexpression on the tolerance to and accumulation of toxic As, Cd, Pb, Hg, and Cr supplied individually or as a mixture of metals. Compared to wild-type plants, γ-ECS transgenics (γ-ECS1-8 and γ-ECS16-5) exhibited a significantly higher capacity to tolerate and accumulate these elements in aboveground tissues, i.e., 76-154% As, 200-254% Cd, 37-48% Hg, 26-69% Pb, and 39-46% Cr, when supplied individually. This is attributable to enhanced production of GSH (82-159% and 75-87%) and PC2 (27-33% and 37-65%) as compared to WT plants under AsV and Cd exposure, respectively. The levels of Cys and γ-EC were also increased by 56-67% and 450-794% in the overexpression lines compared to WT plants under non-stress conditions, respectively. This likely enhanced the metabolic pathway associated with GSH biosynthesis, leading to the ultimate synthesis of PCs, which detoxify toxic metal(loid)s through chelation. These findings demonstrate that γ-ECS overexpressing Crambe lines can be used for the enhanced phytoremediation of toxic metals and metalloids from contaminated soils.</p>","PeriodicalId":20204,"journal":{"name":"Plant Cell Reports","volume":null,"pages":null},"PeriodicalIF":5.3,"publicationDate":"2024-10-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142506402","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"生物学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Key message: SiDVLs inhibit auxin signaling to regulate root growth by enhancing the expression of Aux/IAAs and reducing the protein accumulation of PINs. The DEVIL/ ROTUNDIFOLIA (DVL/RTFL), a small polypeptide family, is conserved in seed plants and important in regulating plant growth and development. However, the molecular mechanisms remain largely unknown. Here, 27 SiDVLs were identified in foxtail millet genome. Overexpression of three SiDVLs in Arabidopsis (Arabidopsis thaliana) strongly repressed the plant growth, especially the root growth. We demonstrate that overexpression of SiDVLs enhances Auxin/Indole-3-Acetic Acids (Aux/IAAs) transcription, thereby weakening auxin signaling in the roots. Furthermore, SiDVLs reduced the protein levels of the auxin transporters PIN-formed 1 (PIN1), PIN2, and PIN7 in the roots. The impaired auxin signaling reduces the cell division and elongation. In conclusion, SiDVLs suppress cell division and elongation in root by inhibiting auxin signaling and transport, which lead to the reduced root growth.
{"title":"Small peptide SiDVL/RTFLs from foxtail millet inhibit root growth through repressing auxin signaling in transgenic Arabidopsis.","authors":"Chunyan Wang, Tongtong Wang, Miao Liu, Shizhong Zhang, Changai Wu","doi":"10.1007/s00299-024-03360-2","DOIUrl":"https://doi.org/10.1007/s00299-024-03360-2","url":null,"abstract":"<p><strong>Key message: </strong>SiDVLs inhibit auxin signaling to regulate root growth by enhancing the expression of Aux/IAAs and reducing the protein accumulation of PINs. The DEVIL/ ROTUNDIFOLIA (DVL/RTFL), a small polypeptide family, is conserved in seed plants and important in regulating plant growth and development. However, the molecular mechanisms remain largely unknown. Here, 27 SiDVLs were identified in foxtail millet genome. Overexpression of three SiDVLs in Arabidopsis (Arabidopsis thaliana) strongly repressed the plant growth, especially the root growth. We demonstrate that overexpression of SiDVLs enhances Auxin/Indole-3-Acetic Acids (Aux/IAAs) transcription, thereby weakening auxin signaling in the roots. Furthermore, SiDVLs reduced the protein levels of the auxin transporters PIN-formed 1 (PIN1), PIN2, and PIN7 in the roots. The impaired auxin signaling reduces the cell division and elongation. In conclusion, SiDVLs suppress cell division and elongation in root by inhibiting auxin signaling and transport, which lead to the reduced root growth.</p>","PeriodicalId":20204,"journal":{"name":"Plant Cell Reports","volume":null,"pages":null},"PeriodicalIF":5.3,"publicationDate":"2024-10-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142472870","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"生物学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Key message: A plant growth regulator, 5-aminolevulinic acid, enhanced the saline-alkali tolerance via photosynthetic, oxidative-reduction, and glutathione metabolism pathways in pepper seedlings. Saline-alkali stress is a prominent environmental problem, hindering growth and development of pepper. 5-Aminolevulinic acid (ALA) application effectively improves plant growth status under various abiotic stresses. Here, we evaluated morphological, physiological, and transcriptomic differences in saline-alkali-stressed pepper seedlings after ALA application to explore the impact of ALA on saline-alkali stress. The results indicated that saline-alkali stress inhibited plant growth, decreased biomass and photosynthesis, altered the osmolyte content and antioxidant system, and increased reactive oxygen species (ROS) accumulation and proline content in pepper seedlings. Conversely, the application of exogenous ALA alleviated this damage by increasing the photosynthetic rate, osmolyte content, antioxidant enzyme activity, and antioxidants, including superoxide dismutase, catalase, glutathione reductase, and glutathione peroxidase, and reducing glutathione to reduce ROS accumulation and malonaldehyde content. Moreover, the transcriptomic analysis revealed the differentially expressed genes were mainly associated with photosynthesis, oxidation-reduction process, and glutathione metabolism in saline-alkali stress + ALA treatment compared to saline-alkali treatment. Among them, the change in expression level in CaGST, CaGR, and CaGPX was close to the variation of corresponding enzyme activity. Collectively, our findings revealed the alleviating effect of ALA on saline-alkali stress in pepper seedlings, broadening the application of ALA and providing a feasible strategy for utilize saline-alkali soil.
关键信息植物生长调节剂5-氨基乙酰丙酸可通过光合作用、氧化还原和谷胱甘肽代谢途径增强辣椒幼苗的耐盐碱能力。盐碱胁迫是阻碍辣椒生长发育的一个突出环境问题。施用 5-氨基乙酰丙酸(ALA)能有效改善各种非生物胁迫下的植物生长状况。在此,我们评估了施用ALA后盐碱胁迫辣椒幼苗的形态、生理和转录组差异,以探讨ALA对盐碱胁迫的影响。结果表明,盐碱胁迫抑制了辣椒幼苗的生长,降低了生物量和光合作用,改变了渗透溶质含量和抗氧化系统,增加了活性氧(ROS)积累和脯氨酸含量。相反,施用外源 ALA 可通过提高光合速率、渗透压含量、抗氧化酶活性和抗氧化剂(包括超氧化物歧化酶、过氧化氢酶、谷胱甘肽还原酶和谷胱甘肽过氧化物酶)以及还原谷胱甘肽来减少 ROS 积累和丙二醛含量,从而减轻这种损害。此外,转录组分析表明,与盐碱胁迫处理相比,盐碱胁迫+ALA处理的差异表达基因主要与光合作用、氧化还原过程和谷胱甘肽代谢有关。其中,CaGST、CaGR和CaGPX的表达水平变化与相应酶活性的变化接近。综上所述,我们的研究结果揭示了ALA对辣椒幼苗盐碱胁迫的缓解作用,拓宽了ALA的应用范围,为盐碱地的利用提供了可行的策略。
{"title":"Exogenous 5-aminolevulinic acid enhanced saline-alkali tolerance in pepper seedlings by regulating photosynthesis, oxidative damage, and glutathione metabolism.","authors":"Xueting Wang, Sizhen Yang, Baixue Li, Chunlin Chen, Jinling Li, Yichao Wang, Qingjie Du, Meng Li, Hu Wang, Juanqi Li, Jiqing Wang, HuaiJuan Xiao","doi":"10.1007/s00299-024-03352-2","DOIUrl":"https://doi.org/10.1007/s00299-024-03352-2","url":null,"abstract":"<p><strong>Key message: </strong>A plant growth regulator, 5-aminolevulinic acid, enhanced the saline-alkali tolerance via photosynthetic, oxidative-reduction, and glutathione metabolism pathways in pepper seedlings. Saline-alkali stress is a prominent environmental problem, hindering growth and development of pepper. 5-Aminolevulinic acid (ALA) application effectively improves plant growth status under various abiotic stresses. Here, we evaluated morphological, physiological, and transcriptomic differences in saline-alkali-stressed pepper seedlings after ALA application to explore the impact of ALA on saline-alkali stress. The results indicated that saline-alkali stress inhibited plant growth, decreased biomass and photosynthesis, altered the osmolyte content and antioxidant system, and increased reactive oxygen species (ROS) accumulation and proline content in pepper seedlings. Conversely, the application of exogenous ALA alleviated this damage by increasing the photosynthetic rate, osmolyte content, antioxidant enzyme activity, and antioxidants, including superoxide dismutase, catalase, glutathione reductase, and glutathione peroxidase, and reducing glutathione to reduce ROS accumulation and malonaldehyde content. Moreover, the transcriptomic analysis revealed the differentially expressed genes were mainly associated with photosynthesis, oxidation-reduction process, and glutathione metabolism in saline-alkali stress + ALA treatment compared to saline-alkali treatment. Among them, the change in expression level in CaGST, CaGR, and CaGPX was close to the variation of corresponding enzyme activity. Collectively, our findings revealed the alleviating effect of ALA on saline-alkali stress in pepper seedlings, broadening the application of ALA and providing a feasible strategy for utilize saline-alkali soil.</p>","PeriodicalId":20204,"journal":{"name":"Plant Cell Reports","volume":null,"pages":null},"PeriodicalIF":5.3,"publicationDate":"2024-10-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142472867","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"生物学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Key message: Desiccation-stage transcription factors perform similar functions, with early ones focused on desiccation tolerance and later ones on development. Gene networks governing late embryo development diverge between soybean and Arabidopsis. To understand gene activities programming seed embryo development, we profiled the soybean embryo transcriptome across embryonic morphogenesis through post-germination. Transcriptomic landscapes across embryo development feature highly prevalent transcripts, categorized into early and late groups, with shared and distinct functions. During the mid-storage reserve accumulation stage, the upregulated genes are enriched with regulatory tasks at both the transcriptional and chromatin levels, including DNA methylation and chromatin remodeling. The epigenetic-related functions also dominate in the upregulated genes during germination, involving core histone variants and histone chaperones. Gene network analysis reveals both stage-specific modules and modules active across multiple stages. The desiccation-associated gene module integrates diverse transcription factors (TFs) that are sequentially active during different desiccation stages, transitioning from abiotic stress functions early on to developmental functions later. Two TFs, active during the early and mid-desiccation stages were functionally assessed in Arabidopsis overexpression lines to uncover their potential roles in desiccation processes. Interestingly, nearly half of the Arabidopsis orthologs of soybean TFs active in the desiccation-associated module are inactive during Arabidopsis desiccation. Our results reveal that chromatin and transcriptional regulation coordinate during mid-storage reserve accumulation, while distinct epigenetic mechanisms drive germination. Additionally, gene modules either perform stage-specific functions or are required across multiple stages, and gene networks during late embryogenesis diverge between soybean and Arabidopsis. Our studies provide new information on the biological processes and gene networks underlying development from embryonic morphogenesis to post-germination.
{"title":"Dissecting the temporal genetic networks programming soybean embryo development from embryonic morphogenesis to post-germination.","authors":"Yen-Ching Wang, Wei-Hsun Hsieh, Liang-Peng Lin, Meng-Hsun He, Ya-Ting Jhan, Chu-Jun Huang, Junpeng Zhan, Ching-Chun Chang, Tzung-Fu Hsieh, Jer-Young Lin","doi":"10.1007/s00299-024-03354-0","DOIUrl":"https://doi.org/10.1007/s00299-024-03354-0","url":null,"abstract":"<p><strong>Key message: </strong>Desiccation-stage transcription factors perform similar functions, with early ones focused on desiccation tolerance and later ones on development. Gene networks governing late embryo development diverge between soybean and Arabidopsis. To understand gene activities programming seed embryo development, we profiled the soybean embryo transcriptome across embryonic morphogenesis through post-germination. Transcriptomic landscapes across embryo development feature highly prevalent transcripts, categorized into early and late groups, with shared and distinct functions. During the mid-storage reserve accumulation stage, the upregulated genes are enriched with regulatory tasks at both the transcriptional and chromatin levels, including DNA methylation and chromatin remodeling. The epigenetic-related functions also dominate in the upregulated genes during germination, involving core histone variants and histone chaperones. Gene network analysis reveals both stage-specific modules and modules active across multiple stages. The desiccation-associated gene module integrates diverse transcription factors (TFs) that are sequentially active during different desiccation stages, transitioning from abiotic stress functions early on to developmental functions later. Two TFs, active during the early and mid-desiccation stages were functionally assessed in Arabidopsis overexpression lines to uncover their potential roles in desiccation processes. Interestingly, nearly half of the Arabidopsis orthologs of soybean TFs active in the desiccation-associated module are inactive during Arabidopsis desiccation. Our results reveal that chromatin and transcriptional regulation coordinate during mid-storage reserve accumulation, while distinct epigenetic mechanisms drive germination. Additionally, gene modules either perform stage-specific functions or are required across multiple stages, and gene networks during late embryogenesis diverge between soybean and Arabidopsis. Our studies provide new information on the biological processes and gene networks underlying development from embryonic morphogenesis to post-germination.</p>","PeriodicalId":20204,"journal":{"name":"Plant Cell Reports","volume":null,"pages":null},"PeriodicalIF":5.3,"publicationDate":"2024-10-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC11489296/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142472866","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"生物学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2024-10-17DOI: 10.1007/s00299-024-03353-1
Shixiong Lu, Min Li, Yongjuan Cheng, Huimin Gou, Lili Che, Guoping Liang, Juan Mao
Key message: Twenty-five VvIAA genes and eighteen VaIAA genes were identified from Pinot Noir and Shanputao, respectively. The overexpression of VaIAA3 in transgenic Arabidopsis increased cold tolerance by regulating auxin, ABA and ethylene signaling. Aux/IAA genes are key genes involved in regulating auxin signal transduction in plants. Although IAA genes have been characterized in various plant species, the role of IAA genes in grape cold resistance is unclear. To further explore the members of the Aux/IAA gene family in grape and their functions, in this study, using genomic data for Pinot Noir (Vitis vinifera cv. 'Pinot Noir') and Shanputao (Vitis amurensis), 25 VvIAA genes and 18 VaIAA genes were identified. The VaIAA genes presented different expression patterns at five different temperatures (28 ± 1 °C, 5 ± 1 °C, 0 ± 1 °C, -5 ± 1 °C, and -10 ± 1 °C) according to qRT‑PCR results. VaIAA3 was selected as a candidate gene for further functional analysis because of its high expression level under low-temperature stress. Subcellular localization experiments revealed that VaIAA3 was localized in the nucleus. Additionally, under 4 °C treatment for 24 h, relative expression level of VaIAA3, antioxidant enzyme activity, survival rate, and cold-responsive gene expression in three transgenic lines (OE-1, OE-2, OE-3) were greater, whereas relative electrolytic conductivity (REC), malondialdehyde (MDA) content and hydrogen peroxide (H2O2) content were lower than those of the wild type (WT). Transcriptome sequencing analysis revealed that VaIAA3 regulated cold stress resistance in Arabidopsis thaliana (Arabidopsis) through pathways involving auxin, ABA, JA, or ethylene. Importantly, heterologous overexpression of VaIAA3 increased the resistance of Arabidopsis to cold stress, which provides a theoretical basis for the further use of VaIAA3 to improve cold resistance in grape.
{"title":"Genome-wide identification of Aux/IAA gene family members in grape and functional analysis of VaIAA3 in response to cold stress.","authors":"Shixiong Lu, Min Li, Yongjuan Cheng, Huimin Gou, Lili Che, Guoping Liang, Juan Mao","doi":"10.1007/s00299-024-03353-1","DOIUrl":"10.1007/s00299-024-03353-1","url":null,"abstract":"<p><strong>Key message: </strong>Twenty-five VvIAA genes and eighteen VaIAA genes were identified from Pinot Noir and Shanputao, respectively. The overexpression of VaIAA3 in transgenic Arabidopsis increased cold tolerance by regulating auxin, ABA and ethylene signaling. Aux/IAA genes are key genes involved in regulating auxin signal transduction in plants. Although IAA genes have been characterized in various plant species, the role of IAA genes in grape cold resistance is unclear. To further explore the members of the Aux/IAA gene family in grape and their functions, in this study, using genomic data for Pinot Noir (Vitis vinifera cv. 'Pinot Noir') and Shanputao (Vitis amurensis), 25 VvIAA genes and 18 VaIAA genes were identified. The VaIAA genes presented different expression patterns at five different temperatures (28 ± 1 °C, 5 ± 1 °C, 0 ± 1 °C, -5 ± 1 °C, and -10 ± 1 °C) according to qRT‑PCR results. VaIAA3 was selected as a candidate gene for further functional analysis because of its high expression level under low-temperature stress. Subcellular localization experiments revealed that VaIAA3 was localized in the nucleus. Additionally, under 4 °C treatment for 24 h, relative expression level of VaIAA3, antioxidant enzyme activity, survival rate, and cold-responsive gene expression in three transgenic lines (OE-1, OE-2, OE-3) were greater, whereas relative electrolytic conductivity (REC), malondialdehyde (MDA) content and hydrogen peroxide (H<sub>2</sub>O<sub>2</sub>) content were lower than those of the wild type (WT). Transcriptome sequencing analysis revealed that VaIAA3 regulated cold stress resistance in Arabidopsis thaliana (Arabidopsis) through pathways involving auxin, ABA, JA, or ethylene. Importantly, heterologous overexpression of VaIAA3 increased the resistance of Arabidopsis to cold stress, which provides a theoretical basis for the further use of VaIAA3 to improve cold resistance in grape.</p>","PeriodicalId":20204,"journal":{"name":"Plant Cell Reports","volume":null,"pages":null},"PeriodicalIF":5.3,"publicationDate":"2024-10-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142472869","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"生物学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}