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Mechanisms of Abscisic acid (ABA)-mediated plant defense responses: An updated review
IF 6.8 Q1 PLANT SCIENCES Pub Date : 2024-12-25 DOI: 10.1016/j.stress.2024.100724
Yao-Sheng Wei , Talha Javed , Tian-Tian Liu , Ahmad Ali , San-Ji Gao
The intensification and frequency of extreme weather events are emerging as a result of global climate change, which has a serious impact on the sustainable development of agriculture. Plants trigger a wide range of defense responses against adverse environmental conditions, including the signal generation, recognition, and transduction together with the crosstalk of defense signals and networks. Subsequently, activation of a variety of defense gene expressions and metabolic adjustments confers plant tolerance to stressors. Abscisic acid (ABA) is a vital phytohormone for balancing plant growth and adaptation to a series of environmental stresses. This review summarizes the current research progress on ABA components involved in defense responses through various mechanisms including stomatal closure, interactions with other signaling molecules such as reactive oxygen species (ROS), calcium (Ca2+) and other phytohormones, transcriptional regulation, and epigenetic modifications. Additionally, the role of ABA in balancing plant growth and stress responses is also discussed. This review provides new insights for sustainable development of agriculture under current climate change scenarios.
{"title":"Mechanisms of Abscisic acid (ABA)-mediated plant defense responses: An updated review","authors":"Yao-Sheng Wei ,&nbsp;Talha Javed ,&nbsp;Tian-Tian Liu ,&nbsp;Ahmad Ali ,&nbsp;San-Ji Gao","doi":"10.1016/j.stress.2024.100724","DOIUrl":"10.1016/j.stress.2024.100724","url":null,"abstract":"<div><div>The intensification and frequency of extreme weather events are emerging as a result of global climate change, which has a serious impact on the sustainable development of agriculture. Plants trigger a wide range of defense responses against adverse environmental conditions, including the signal generation, recognition, and transduction together with the crosstalk of defense signals and networks. Subsequently, activation of a variety of defense gene expressions and metabolic adjustments confers plant tolerance to stressors. Abscisic acid (ABA) is a vital phytohormone for balancing plant growth and adaptation to a series of environmental stresses. This review summarizes the current research progress on ABA components involved in defense responses through various mechanisms including stomatal closure, interactions with other signaling molecules such as reactive oxygen species (ROS), calcium (Ca<sup>2+</sup>) and other phytohormones, transcriptional regulation, and epigenetic modifications. Additionally, the role of ABA in balancing plant growth and stress responses is also discussed. This review provides new insights for sustainable development of agriculture under current climate change scenarios.</div></div>","PeriodicalId":34736,"journal":{"name":"Plant Stress","volume":"15 ","pages":"Article 100724"},"PeriodicalIF":6.8,"publicationDate":"2024-12-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143098942","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Revolutionizing heat stress tolerance in Glycine max: Exploring the latest advances in microbial application
IF 6.8 Q1 PLANT SCIENCES Pub Date : 2024-12-24 DOI: 10.1016/j.stress.2024.100725
Shifa Shaffique , Md. Injamum-Ul-Hoque , Azamal Husen , Sang-Mo kang , In-Jung Lee
Global warming has intensified the abiotic stresses on plants and threatens global food and energy security. Heat stress (HS) has become ubiquitous hazardous environmental stress, eliciting concerns regarding its adverse impacts on terrestrial and agroecosystems. Plant hormones function as signaling molecules essential for stress tolerance, defense mechanisms, and facilitation of plants' overall physiological growth and development. Numerous studies have reported on Glycine max that the exogenous application of phytohormones confers HS tolerance and activates endogenous defensive mechanisms by producing several secondary metabolites. This review summaries the recent progress in phytohormones and their corresponding microbes in the thermotolerance of Glycine max via integrating plant-microbial interaction. These studies suggest that beneficial microbes under HS can induce thermotolerance and thermomorphogenesis through several complex mechanisms. This is the first review to provide insight into the microbial-mediated phytohormone signaling pathway for the transcriptional modulation of secondary metabolism in a range of HS tolerances in soybean. Finally, we provide a primary perspective on improving the response of soybean plants to HS and on producing valuable phytohormones by exploiting microbial-mediated and secondary metabolite interaction.
{"title":"Revolutionizing heat stress tolerance in Glycine max: Exploring the latest advances in microbial application","authors":"Shifa Shaffique ,&nbsp;Md. Injamum-Ul-Hoque ,&nbsp;Azamal Husen ,&nbsp;Sang-Mo kang ,&nbsp;In-Jung Lee","doi":"10.1016/j.stress.2024.100725","DOIUrl":"10.1016/j.stress.2024.100725","url":null,"abstract":"<div><div>Global warming has intensified the abiotic stresses on plants and threatens global food and energy security. Heat stress (HS) has become ubiquitous hazardous environmental stress, eliciting concerns regarding its adverse impacts on terrestrial and agroecosystems. Plant hormones function as signaling molecules essential for stress tolerance, defense mechanisms, and facilitation of plants' overall physiological growth and development. Numerous studies have reported on Glycine max that the exogenous application of phytohormones confers HS tolerance and activates endogenous defensive mechanisms by producing several secondary metabolites. This review summaries the recent progress in phytohormones and their corresponding microbes in the thermotolerance of <em>Glycine</em> max via integrating plant-microbial interaction. These studies suggest that beneficial microbes under HS can induce thermotolerance and thermomorphogenesis through several complex mechanisms. This is the first review to provide insight into the microbial-mediated phytohormone signaling pathway for the transcriptional modulation of secondary metabolism in a range of HS tolerances in soybean. Finally, we provide a primary perspective on improving the response of soybean plants to HS and on producing valuable phytohormones by exploiting microbial-mediated and secondary metabolite interaction.</div></div>","PeriodicalId":34736,"journal":{"name":"Plant Stress","volume":"15 ","pages":"Article 100725"},"PeriodicalIF":6.8,"publicationDate":"2024-12-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143148869","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Thirsty, soaked, and thriving: Maize morpho-physiological and biochemical responses to sequential drought, waterlogging, and re-drying
IF 6.8 Q1 PLANT SCIENCES Pub Date : 2024-12-23 DOI: 10.1016/j.stress.2024.100722
Sanjida Sultana Keya , Md. Robyul Islam , Hanh Pham , Md. Abiar Rahman , Mallesham Bulle , Azmia Patwary , Most. Malika-Al-Razi Kanika , Fahedul Hasan Hemel , Totan Kumar Ghosh , Nuril Huda , Zannatul Hawa , Md. Mezanur Rahman , Waltram Ravelombola
Maize (Zea mays), a pivotal cereal crop, frequently encounters sequential abiotic stresses—drought, waterlogging, and re-drought—that impose multifaceted and interlinked constraints on its growth and productivity. This study elucidates the specific impacts of these sequential stress events on maize morphology, physiology, and biochemistry, offering critical insights into the crop's adaptive capacities and limitations. Drought stress elicited severe morphological alterations, including pronounced leaf curling, significant reductions in leaf area, and inhibited shoot elongation, collectively undermining photosynthetic efficiency. Root systems exhibited marked shallowness and sparsity, substantially restricting water and nutrient uptake. Photosynthetic pigment degradation, particularly of chlorophyll and carotenoids, was acute, accompanied by diminished CO2 assimilation and elevated leaf temperatures, which likely exacerbated oxidative stress through reactive oxygen species (ROS) overproduction. Waterlogging stress following drought, although alleviating some drought-induced damage, introduced oxygen deprivation in the rhizosphere, leading to disrupted root respiration, necrosis, and impaired nutrient acquisition. Adaptive responses, such as partial recovery of photosynthetic pigments, improved water balance, and reduced oxidative stress; however, metabolic recovery remained incomplete, with stunted growth and persistent root biomass loss. Re-drought stress followed by pre-drought and waterlogging imposed the most catastrophic effects, characterized by pervasive leaf necrosis, pronounced shoot and root stunting, and a systemic collapse in biomass accumulation. The re-drought phase was marked by escalated ROS levels, membrane destabilization, and the overwhelming failure of antioxidative defenses, culminating in metabolic dysfunction and structural disintegration. These findings underscore the urgent necessity for targeted breeding strategies to optimize root system architecture, fortify antioxidative defense mechanisms, and enhance osmoprotectant synthesis. Integrative multi-omics approaches and comparative studies across diverse maize genotypes are imperative to unravel the genetic and molecular underpinnings of stress resilience.
{"title":"Thirsty, soaked, and thriving: Maize morpho-physiological and biochemical responses to sequential drought, waterlogging, and re-drying","authors":"Sanjida Sultana Keya ,&nbsp;Md. Robyul Islam ,&nbsp;Hanh Pham ,&nbsp;Md. Abiar Rahman ,&nbsp;Mallesham Bulle ,&nbsp;Azmia Patwary ,&nbsp;Most. Malika-Al-Razi Kanika ,&nbsp;Fahedul Hasan Hemel ,&nbsp;Totan Kumar Ghosh ,&nbsp;Nuril Huda ,&nbsp;Zannatul Hawa ,&nbsp;Md. Mezanur Rahman ,&nbsp;Waltram Ravelombola","doi":"10.1016/j.stress.2024.100722","DOIUrl":"10.1016/j.stress.2024.100722","url":null,"abstract":"<div><div>Maize (<em>Zea mays</em>), a pivotal cereal crop, frequently encounters sequential abiotic stresses—drought, waterlogging, and re-drought—that impose multifaceted and interlinked constraints on its growth and productivity. This study elucidates the specific impacts of these sequential stress events on maize morphology, physiology, and biochemistry, offering critical insights into the crop's adaptive capacities and limitations. Drought stress elicited severe morphological alterations, including pronounced leaf curling, significant reductions in leaf area, and inhibited shoot elongation, collectively undermining photosynthetic efficiency. Root systems exhibited marked shallowness and sparsity, substantially restricting water and nutrient uptake. Photosynthetic pigment degradation, particularly of chlorophyll and carotenoids, was acute, accompanied by diminished CO<sub>2</sub> assimilation and elevated leaf temperatures, which likely exacerbated oxidative stress through reactive oxygen species (ROS) overproduction. Waterlogging stress following drought, although alleviating some drought-induced damage, introduced oxygen deprivation in the rhizosphere, leading to disrupted root respiration, necrosis, and impaired nutrient acquisition. Adaptive responses, such as partial recovery of photosynthetic pigments, improved water balance, and reduced oxidative stress; however, metabolic recovery remained incomplete, with stunted growth and persistent root biomass loss. Re-drought stress followed by pre-drought and waterlogging imposed the most catastrophic effects, characterized by pervasive leaf necrosis, pronounced shoot and root stunting, and a systemic collapse in biomass accumulation. The re-drought phase was marked by escalated ROS levels, membrane destabilization, and the overwhelming failure of antioxidative defenses, culminating in metabolic dysfunction and structural disintegration. These findings underscore the urgent necessity for targeted breeding strategies to optimize root system architecture, fortify antioxidative defense mechanisms, and enhance osmoprotectant synthesis. Integrative multi-omics approaches and comparative studies across diverse maize genotypes are imperative to unravel the genetic and molecular underpinnings of stress resilience.</div></div>","PeriodicalId":34736,"journal":{"name":"Plant Stress","volume":"15 ","pages":"Article 100722"},"PeriodicalIF":6.8,"publicationDate":"2024-12-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143149370","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Genome-wide analysis of the TsBLH gene family reveals TsBLH4 involved the regulation of abiotic stresses by interacting with KNOX6 in Toona sinensis
IF 6.8 Q1 PLANT SCIENCES Pub Date : 2024-12-22 DOI: 10.1016/j.stress.2024.100721
Shuxin Chen , Yuhan Jia , Yuying Yang , Huan Liu , Huiling Chen , Jun Liu , Hengfu Yin , Renying Zhuo , Xiaojiao Han
BLH1-like homeobox (BLH) transcription factors are widely distributed in plants and are a subfamily of the three-amino-acid loop extension (TALE) family. They play pivotal roles in plant growth and development processes and mediate plant responses to abiotic stress. However, recent studies on the function of BLHs have primarily focused on model plants or crops. Here, we identified 21 BLH members in the genome of Toona sinensis. The BLH gene family was divided into five subfamilies, each exhibiting variations in exon-intron distribution and motif composition. TsBLH genes exhibited tissue-specific expression, with all genes responding to salt or osmotic stresses. Notably, TsBLH4 was highly expressed in xylem and leaves and was strongly induced by both salt and osmotic stresses in leaves. Additionally, TsBLH4 is a nuclear protein that physically interacts with TsKNOX6, which is localized in the nucleus and the cytomembrane. The transient expression of TsBLH4 and TsKNOX6 genes in leaves of T. sinensis resulted in increased sensitivity to salt and enhanced tolerance to osmotic stress. These results provide a theoretical basis for the involvement of the BLH gene family in abiotic stress responses in plants.
{"title":"Genome-wide analysis of the TsBLH gene family reveals TsBLH4 involved the regulation of abiotic stresses by interacting with KNOX6 in Toona sinensis","authors":"Shuxin Chen ,&nbsp;Yuhan Jia ,&nbsp;Yuying Yang ,&nbsp;Huan Liu ,&nbsp;Huiling Chen ,&nbsp;Jun Liu ,&nbsp;Hengfu Yin ,&nbsp;Renying Zhuo ,&nbsp;Xiaojiao Han","doi":"10.1016/j.stress.2024.100721","DOIUrl":"10.1016/j.stress.2024.100721","url":null,"abstract":"<div><div>BLH1-like homeobox (BLH) transcription factors are widely distributed in plants and are a subfamily of the three-amino-acid loop extension (TALE) family. They play pivotal roles in plant growth and development processes and mediate plant responses to abiotic stress. However, recent studies on the function of BLHs have primarily focused on model plants or crops. Here, we identified 21 BLH members in the genome of <em>Toona sinensis</em>. The <em>BLH</em> gene family was divided into five subfamilies, each exhibiting variations in exon-intron distribution and motif composition. <em>TsBLH</em> genes exhibited tissue-specific expression, with all genes responding to salt or osmotic stresses. Notably, <em>TsBLH4</em> was highly expressed in xylem and leaves and was strongly induced by both salt and osmotic stresses in leaves. Additionally, TsBLH4 is a nuclear protein that physically interacts with TsKNOX6, which is localized in the nucleus and the cytomembrane. The transient expression of <em>TsBLH4</em> and <em>TsKNOX6</em> genes in leaves of <em>T. sinensis</em> resulted in increased sensitivity to salt and enhanced tolerance to osmotic stress. These results provide a theoretical basis for the involvement of the <em>BLH</em> gene family in abiotic stress responses in plants.</div></div>","PeriodicalId":34736,"journal":{"name":"Plant Stress","volume":"15 ","pages":"Article 100721"},"PeriodicalIF":6.8,"publicationDate":"2024-12-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143098827","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Effects of antimony on synthesis of saccharides and lipids, and enzyme activity associated with synthesis/degradation of saccharides in leaves of a rice plant
IF 6.8 Q1 PLANT SCIENCES Pub Date : 2024-12-20 DOI: 10.1016/j.stress.2024.100719
YaTing Zheng , YanMing Zhu , YiRan Tong , JiaJia Zhang , Hong Liu , Christopher Rensing , YinShui Li , RenWei Feng
Different forms of antimony (Sb) show different toxicities to plants, which are hypothesized to be partially due to the disorders of lipid and saccharide synthesis. Hydroponic experiments were conducted using a rice plant (Yangdao 6) exposed to antimonite (Sb(III)) and antimonate (Sb(V)). We monitored the following (1) saccharide concentration and enzymatic activities associated with synthesis/degradation of sucrose and starch; (2) changes in cell ultrastructure of rice leaves; and (3) differentially expressed metabolites (DEMs) associated with lipids. The results showed that when compared to the control, Sb(III/V) (1) increased the concentrations of starch, soluble sugars, sucrose and fructose as well as the activities of cell–wall binding acid invertase (B–AI) in rice leaves; (2) mainly affected the abundance of unsaturated lipids of fatty acids (FAs), prenol lipids, glycerolipids, and glycerophospholipids, especially for Sb(III); and (3) negatively affected the abundance of DEMs associated with α–linolenic acid metabolism and xanthophyll formation. Relative to Sb(V), Sb(III) (1) showed great negative effects on the activities of fructose–1, 6–diphosphatase (FBP), triose–phosphate isomerase (TPI), α–glucosidase, and sucrose–phosphate synthase (SPS); (2) significantly narrowed the shape of starch granules and increased the thickness of cell walls; (3) increased numbers and abundance of DEMs associated with toxins (belonging to sphingolipids), flavonoids (polyketides), and biomarkers (corticosteroid hormones); and (4) increased the numbers of FAs whose abundance was upregulated. This study showed a complex regulatory network associated with saccharide synthesis/degradation and lipid constitution in response to Sb toxicity.
{"title":"Effects of antimony on synthesis of saccharides and lipids, and enzyme activity associated with synthesis/degradation of saccharides in leaves of a rice plant","authors":"YaTing Zheng ,&nbsp;YanMing Zhu ,&nbsp;YiRan Tong ,&nbsp;JiaJia Zhang ,&nbsp;Hong Liu ,&nbsp;Christopher Rensing ,&nbsp;YinShui Li ,&nbsp;RenWei Feng","doi":"10.1016/j.stress.2024.100719","DOIUrl":"10.1016/j.stress.2024.100719","url":null,"abstract":"<div><div>Different forms of antimony (Sb) show different toxicities to plants, which are hypothesized to be partially due to the disorders of lipid and saccharide synthesis. Hydroponic experiments were conducted using a rice plant (Yangdao 6) exposed to antimonite (Sb(III)) and antimonate (Sb(V)). We monitored the following (1) saccharide concentration and enzymatic activities associated with synthesis/degradation of sucrose and starch; (2) changes in cell ultrastructure of rice leaves; and (3) differentially expressed metabolites (DEMs) associated with lipids. The results showed that when compared to the control, Sb(III/V) (1) increased the concentrations of starch, soluble sugars, sucrose and fructose as well as the activities of cell–wall binding acid invertase (B–AI) in rice leaves; (2) mainly affected the abundance of unsaturated lipids of fatty acids (FAs), prenol lipids, glycerolipids, and glycerophospholipids, especially for Sb(III); and (3) negatively affected the abundance of DEMs associated with α–linolenic acid metabolism and xanthophyll formation. Relative to Sb(V), Sb(III) (1) showed great negative effects on the activities of fructose–1, 6–diphosphatase (FBP), triose–phosphate isomerase (TPI), α–glucosidase, and sucrose–phosphate synthase (SPS); (2) significantly narrowed the shape of starch granules and increased the thickness of cell walls; (3) increased numbers and abundance of DEMs associated with toxins (belonging to sphingolipids), flavonoids (polyketides), and biomarkers (corticosteroid hormones); and (4) increased the numbers of FAs whose abundance was upregulated. This study showed a complex regulatory network associated with saccharide synthesis/degradation and lipid constitution in response to Sb toxicity.</div></div>","PeriodicalId":34736,"journal":{"name":"Plant Stress","volume":"15 ","pages":"Article 100719"},"PeriodicalIF":6.8,"publicationDate":"2024-12-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143098264","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Microbial secondary metabolites for modulating plant biotic stress resistance: Bridging the lab-field gap
IF 6.8 Q1 PLANT SCIENCES Pub Date : 2024-12-20 DOI: 10.1016/j.stress.2024.100720
Reza Fauzi Dwisandi , Mia Miranti , Ani Widiastuti , Dedat Prismantoro , Muhammad Adil Awal , Muhamad Shakirin Mispan , Ravindra Chandra Joshi , Febri Doni
Biotic stress, including pest attacks, plant diseases caused by pathogenic microbes, and competition from weeds, significantly limit the optimal crop productivity. The use of beneficial microorganisms has been shown to enhance plants' tolerance to these stressors. Numerous laboratory studies have investigated the effectiveness of microbial secondary metabolites as biological control agents against pests, diseases, and weeds. However, a critical challenge remains in determining whether microorganisms applied in the field will produce the same secondary metabolites as those observed in the laboratory, and whether their effectiveness will be comparable, better, or worse. This review examines the comparative effectiveness of microbial agents in producing secondary metabolites that enhance plant tolerance to biotic stress, considering both laboratory and field settings.
{"title":"Microbial secondary metabolites for modulating plant biotic stress resistance: Bridging the lab-field gap","authors":"Reza Fauzi Dwisandi ,&nbsp;Mia Miranti ,&nbsp;Ani Widiastuti ,&nbsp;Dedat Prismantoro ,&nbsp;Muhammad Adil Awal ,&nbsp;Muhamad Shakirin Mispan ,&nbsp;Ravindra Chandra Joshi ,&nbsp;Febri Doni","doi":"10.1016/j.stress.2024.100720","DOIUrl":"10.1016/j.stress.2024.100720","url":null,"abstract":"<div><div>Biotic stress, including pest attacks, plant diseases caused by pathogenic microbes, and competition from weeds, significantly limit the optimal crop productivity. The use of beneficial microorganisms has been shown to enhance plants' tolerance to these stressors. Numerous laboratory studies have investigated the effectiveness of microbial secondary metabolites as biological control agents against pests, diseases, and weeds. However, a critical challenge remains in determining whether microorganisms applied in the field will produce the same secondary metabolites as those observed in the laboratory, and whether their effectiveness will be comparable, better, or worse. This review examines the comparative effectiveness of microbial agents in producing secondary metabolites that enhance plant tolerance to biotic stress, considering both laboratory and field settings.</div></div>","PeriodicalId":34736,"journal":{"name":"Plant Stress","volume":"15 ","pages":"Article 100720"},"PeriodicalIF":6.8,"publicationDate":"2024-12-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143098946","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
RNA-seq of grafted near-isogenic soybean (Glycine max) lines reveals root genotype drives shoot responses to iron deficiency chlorosis
IF 6.8 Q1 PLANT SCIENCES Pub Date : 2024-12-17 DOI: 10.1016/j.stress.2024.100717
Daniel R. Kohlhase , Jamie A. O'Rourke , Michelle A. Graham
Iron deficiency chlorosis negatively affects crop quality and yield. Studies of model species demonstrate long distance signaling from the shoot and local signaling in the root control iron stress responses in the root. However, recent whole genome expression studies of the iron deficiency chlorosis (IDC) tolerant soybean line Clark demonstrate the roots respond to iron stress earlier than the shoots, suggesting root control of iron stress responses in soybean. Further, the same biological pathways responded to iron stress in the roots and leaves, suggesting iron stress signaling occurs from root to shoot. To further investigate these findings, the current study used grafting of near-isogenic soybean lines Clark (IDC tolerant) and IsoClark (IDC susceptible) to demonstrate grafted shoots with a Clark rootstock have significantly greater SPAD scores than shoots with an IsoClark root stock in iron deficient conditions one and two weeks after iron stress.This confirms the Clark rootstock controls tolerance to iron deficiency chlorosis. Multiple previous studies demonstrate that Clark induces iron stress responses within an hour of iron stress exposure, well before iron stress phenotypes can be observed. Therefore, to provide evidence of signaling between roots and shoots we conducted RNA-sequencing (RNA-seq) analyses of leaves and roots from hetero- and homografted plants 30 and 120 min (m) after iron stress. We identified 518 and 846 differentially expressed genes (DEGs) in leaves and roots, respectively. At 30 m, DEG expression patterns in the leaves and roots were determined by the genotype of the tissue. By 120 m, DEG expression patterns in the leaves were determined by the genotype of the root. Grafts with a Clark rootstock induced iron uptake and utilization genes at 30 m in the root and by 120 m in the leaves, regardless of the leaf genotype. In contrast, grafts with a IsoClark rootstock were unable to induce iron uptake and utilization genes in the leaves in the same time frame. This provides evidence of a Clark mobile signal, initiated in the roots, that regulates iron stress responses in the leaves. We also provide evidence of an IsoClark shoot to root signal at 120 m that induces general abiotic stress responses, but unable to overcome iron stress conditions. Better understanding of the complex differences between crop and model species will aid in developing crops with improved IDC tolerance.
{"title":"RNA-seq of grafted near-isogenic soybean (Glycine max) lines reveals root genotype drives shoot responses to iron deficiency chlorosis","authors":"Daniel R. Kohlhase ,&nbsp;Jamie A. O'Rourke ,&nbsp;Michelle A. Graham","doi":"10.1016/j.stress.2024.100717","DOIUrl":"10.1016/j.stress.2024.100717","url":null,"abstract":"<div><div>Iron deficiency chlorosis negatively affects crop quality and yield. Studies of model species demonstrate long distance signaling from the shoot and local signaling in the root control iron stress responses in the root. However, recent whole genome expression studies of the iron deficiency chlorosis (IDC) tolerant soybean line Clark demonstrate the roots respond to iron stress earlier than the shoots, suggesting root control of iron stress responses in soybean. Further, the same biological pathways responded to iron stress in the roots and leaves, suggesting iron stress signaling occurs from root to shoot. To further investigate these findings, the current study used grafting of near-isogenic soybean lines Clark (IDC tolerant) and IsoClark (IDC susceptible) to demonstrate grafted shoots with a Clark rootstock have significantly greater SPAD scores than shoots with an IsoClark root stock in iron deficient conditions one and two weeks after iron stress.This confirms the Clark rootstock controls tolerance to iron deficiency chlorosis. Multiple previous studies demonstrate that Clark induces iron stress responses within an hour of iron stress exposure, well before iron stress phenotypes can be observed. Therefore, to provide evidence of signaling between roots and shoots we conducted RNA-sequencing (RNA-seq) analyses of leaves and roots from hetero- and homografted plants 30 and 120 min (m) after iron stress. We identified 518 and 846 differentially expressed genes (DEGs) in leaves and roots, respectively. At 30 m, DEG expression patterns in the leaves and roots were determined by the genotype of the tissue. By 120 m, DEG expression patterns in the leaves were determined by the genotype of the root. Grafts with a Clark rootstock induced iron uptake and utilization genes at 30 m in the root and by 120 m in the leaves, regardless of the leaf genotype. In contrast, grafts with a IsoClark rootstock were unable to induce iron uptake and utilization genes in the leaves in the same time frame. This provides evidence of a Clark mobile signal, initiated in the roots, that regulates iron stress responses in the leaves. We also provide evidence of an IsoClark shoot to root signal at 120 m that induces general abiotic stress responses, but unable to overcome iron stress conditions. Better understanding of the complex differences between crop and model species will aid in developing crops with improved IDC tolerance.</div></div>","PeriodicalId":34736,"journal":{"name":"Plant Stress","volume":"15 ","pages":"Article 100717"},"PeriodicalIF":6.8,"publicationDate":"2024-12-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143098246","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Untapped potential of calcium and nano-calcium to develop abiotic stress resilience in photosynthetic machinery: The primary source of plant food and fuels
IF 6.8 Q1 PLANT SCIENCES Pub Date : 2024-12-17 DOI: 10.1016/j.stress.2024.100718
Mohammad Faizan , Bhavya Somaplara Gangadharappa , Pravej Alam , Sadia Haque Tonny , Katenahalli Rudrappa Maruthi , Shamsul Hayat
Photosynthesis is a special mechanism that has formed life on earth and created the conditions for all known life. The function of calcium (Ca) as a secondary messenger in plants has been the subject of substantial research in recent decades. Due to their sessile nature, plants are subject to a variety of abiotic stresses, such as pesticide pollution, heavy metals, salt, drought, nutrient deficiencies, light intensity, and severe temperatures. Abiotic stresses mainly lower plants' photosynthetic efficiency because they have detrimental effects on gas exchange parameters, electron transport processes, photosystem performance, and chlorophyll production. The decline in photosynthetic capacity of plants due to these stresses is directly associated with reduction in yield. Therefore, detailed information of the role of calcium (Ca) and nano-Ca on photosynthetic machinery and better understanding of the photosynthetic machinery could help in developing new strategies with higher yield even under stressed environments. Interestingly, in this review, we provide an overview of insight into mechanism affecting photosynthesis under abiotic stresses. The present review explains how several abiotic stressors can negatively affect the photosynthesis mechanism and Ca and nano-Ca mediated-regulation in plant photosynthesis. The review also highlights the advantages of using nano-Ca to increase photosynthetic efficiency.
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引用次数: 0
Exploring the deleterious effects of heavy metal cadmium on antioxidant defense and photosynthetic pathways in higher plants
IF 6.8 Q1 PLANT SCIENCES Pub Date : 2024-12-16 DOI: 10.1016/j.stress.2024.100716
Jinxiao Song , Zhaomei Sun , Shah Saud , Shah Fahad , Taufiq Nawaz
Cadmium (Cd) is a highly toxic heavy metal and a major inorganic pollutant in soil ecosystems. Due to its high mobility and solubility, plants easily absorb Cd, affecting their physiological and biochemical processes, crop quality, and ultimately human health through bioaccumulation in the food chain. This review provides a comprehensive analysis of recent advances in understanding Cd toxicity in soil. It studies the influence of Cd on plant growth and development, focusing on disruptions in physiological and biochemical processes, changes in cellular ultrastructure, changes in biomass accumulation, and changes in nutritional quality. The review summarizes current findings on the mechanisms of Cd-induced toxicity, particularly its effects on antioxidant and photosynthetic systems. The broader ecological consequences of Cd contamination on ecosystem health and biodiversity are also examined. In addition, the article discusses new phytoremediation and genetic engineering strategies aimed at increasing plant resistance to Cd stress. Future research directions are suggested to address existing knowledge gaps and improve remediation efforts.
{"title":"Exploring the deleterious effects of heavy metal cadmium on antioxidant defense and photosynthetic pathways in higher plants","authors":"Jinxiao Song ,&nbsp;Zhaomei Sun ,&nbsp;Shah Saud ,&nbsp;Shah Fahad ,&nbsp;Taufiq Nawaz","doi":"10.1016/j.stress.2024.100716","DOIUrl":"10.1016/j.stress.2024.100716","url":null,"abstract":"<div><div>Cadmium (Cd) is a highly toxic heavy metal and a major inorganic pollutant in soil ecosystems. Due to its high mobility and solubility, plants easily absorb Cd, affecting their physiological and biochemical processes, crop quality, and ultimately human health through bioaccumulation in the food chain. This review provides a comprehensive analysis of recent advances in understanding Cd toxicity in soil. It studies the influence of Cd on plant growth and development, focusing on disruptions in physiological and biochemical processes, changes in cellular ultrastructure, changes in biomass accumulation, and changes in nutritional quality. The review summarizes current findings on the mechanisms of Cd-induced toxicity, particularly its effects on antioxidant and photosynthetic systems. The broader ecological consequences of Cd contamination on ecosystem health and biodiversity are also examined. In addition, the article discusses new phytoremediation and genetic engineering strategies aimed at increasing plant resistance to Cd stress. Future research directions are suggested to address existing knowledge gaps and improve remediation efforts.</div></div>","PeriodicalId":34736,"journal":{"name":"Plant Stress","volume":"15 ","pages":"Article 100716"},"PeriodicalIF":6.8,"publicationDate":"2024-12-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143098248","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Zinc-chitosan nanocomposites as guardians against the dreaded phytopathogenic fungus Macrophomina phaseolina in Vigna radiata L.
IF 6.8 Q1 PLANT SCIENCES Pub Date : 2024-12-16 DOI: 10.1016/j.stress.2024.100710
Uswa Fatima , Amna Shoaib , Qudsia Fatima , Abdulaziz Abdullah Alsahli , Parvaiz Ahmad
Macrophomina phaseolina, a phytopathogenic fungus responsible for root rot in mung beans (Vigna radiata L.), produces resilient sclerotia that are not effectively managed by chemical fungicides. In this study, as an alternative management approach, zinc-chitosan nanoparticles (Zn-ChNPs) were prepared using the ionic gelation method and evaluated for their antifungal activity against M. phaseolina. The synthesis of Zn-ChNPs was confirmed by UV–visible spectroscopy with absorption peaks at 215 nm and 265 nm. XRD indicated hexagonal crystalline planes, verifying nanoparticle crystallinity, while FTIR showed strong ZnO-chitosan interactions with peaks at 3495 cm⁻¹ and 678 cm⁻¹. The particles averaged 80–100 nm in size. Antifungal bioassays demonstrated significant inhibition of fungal growth, achieving 50–100 % reduction at concentrations of 0.11 % and above, and an EC50 (effective concentration) value of 0.08 %. Microscopic analysis revealed sclerotia distortion at 0.15 % Zn-ChNPs, while enzymatic assays showed a 20–60 % increase in catalase, peroxidase, polyphenol oxidase, and phenylalanine ammonia-lyase activities at concentrations of 0.03–0.11 %, followed by a sharp decrease beyond 0.11 %. In planta bioassays indicated that 0.4–0.6 % Zn-ChNPs reduced disease by 97 % and improved growth up to 100 %, surpassing the performance of chemical fungicides (Carbendazim). Multivariate analysis further underscored the superior efficacy of Zn-ChNPs in enhancing plant defense mechanisms and managing root rot disease. These findings highlighted the potential of Zn-ChNPs as a sustainable and effective alternative to chemical fungicides, offering dual benefits of disease control and growth enhancement in mung bean plants.
{"title":"Zinc-chitosan nanocomposites as guardians against the dreaded phytopathogenic fungus Macrophomina phaseolina in Vigna radiata L.","authors":"Uswa Fatima ,&nbsp;Amna Shoaib ,&nbsp;Qudsia Fatima ,&nbsp;Abdulaziz Abdullah Alsahli ,&nbsp;Parvaiz Ahmad","doi":"10.1016/j.stress.2024.100710","DOIUrl":"10.1016/j.stress.2024.100710","url":null,"abstract":"<div><div><em>Macrophomina phaseolina,</em> a phytopathogenic fungus responsible for root rot in mung beans (<em>Vigna radiata</em> L.), produces resilient sclerotia that are not effectively managed by chemical fungicides. In this study, as an alternative management approach, zinc-chitosan nanoparticles (Zn-ChNPs) were prepared using the ionic gelation method and evaluated for their antifungal activity against <em>M. phaseolina.</em> The synthesis of Zn-ChNPs was confirmed by UV–visible spectroscopy with absorption peaks at 215 nm and 265 nm. XRD indicated hexagonal crystalline planes, verifying nanoparticle crystallinity, while FTIR showed strong ZnO-chitosan interactions with peaks at 3495 cm⁻¹ and 678 cm⁻¹. The particles averaged 80–100 nm in size<em>.</em> Antifungal bioassays demonstrated significant inhibition of fungal growth, achieving 50–100 % reduction at concentrations of 0.11 % and above, and an EC<sub>50</sub> (effective concentration) value of 0.08 %. Microscopic analysis revealed sclerotia distortion at 0.15 % Zn-ChNPs, while enzymatic assays showed a 20–60 % increase in catalase, peroxidase, polyphenol oxidase, and phenylalanine ammonia-lyase activities at concentrations of 0.03–0.11 %, followed by a sharp decrease beyond 0.11 %. <em>In planta</em> bioassays indicated that 0.4–0.6 % Zn-ChNPs reduced disease by 97 % and improved growth up to 100 %, surpassing the performance of chemical fungicides (Carbendazim). Multivariate analysis further underscored the superior efficacy of Zn-ChNPs in enhancing plant defense mechanisms and managing root rot disease. These findings highlighted the potential of Zn-ChNPs as a sustainable and effective alternative to chemical fungicides, offering dual benefits of disease control and growth enhancement in mung bean plants.</div></div>","PeriodicalId":34736,"journal":{"name":"Plant Stress","volume":"15 ","pages":"Article 100710"},"PeriodicalIF":6.8,"publicationDate":"2024-12-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143097828","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
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Plant Stress
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