Current Plant Biology最新文献

{"title":"Microbes and metabolites of a plant-parasite interaction: Deciphering the ecology of Tetrastigma host choice in the world’s largest parasitic flower, Rafflesia","authors":"Jeanmaire Molina ,&nbsp;Roche C. de Guzman ,&nbsp;Rinat Abzalimov ,&nbsp;Wenkai Huang ,&nbsp;Anusha Guruprasad ,&nbsp;Ronniel Pedales ,&nbsp;Adhityo Wicaksono ,&nbsp;Destiny Davis ,&nbsp;John Rey Callado ,&nbsp;Hans Bänziger ,&nbsp;Piyakaset Suksathan ,&nbsp;William Eaton ,&nbsp;Pride Yin ,&nbsp;Marco Bürger ,&nbsp;Mick Erickson ,&nbsp;Stephen Jones ,&nbsp;James Adams ,&nbsp;Susan Pell","doi":"10.1016/j.cpb.2025.100456","DOIUrl":"10.1016/j.cpb.2025.100456","url":null,"abstract":"<div><div><em>Rafflesia,</em> known for producing the world’s largest flowers, is a holoparasite found only in Southeast Asia's rapidly diminishing tropical forests. Completely dependent on its <em>Tetrastigma</em> host plants, <em>Rafflesia</em> grows covertly within its host until flowering, but the ecological factors driving host susceptibility are unknown. With most <em>Rafflesia</em> species on the brink of extinction due to habitat loss, understanding the complex ecological interactions between <em>Rafflesia</em> and its host is crucial for conservation. In this study, we integrated metagenomic data with metabolomic profiles to identify potential functional relationships between microbial communities and specific metabolites, shedding light on their ecological roles in <em>Rafflesia's</em> life cycle. Key findings reveal that microbial taxa such as Microbacteriaceae and Nocardioidaceae correlate with elevated levels of polyphenols, particularly gallic acid derivatives, which may shape the chemical environment conducive to <em>Rafflesia</em> development. Complex-carbon-degrading bacteria thrive in the chemically distinct environment of <em>Rafflesia</em> buds, while an unknown group of Saccharimonadales was enriched in <em>Tetrastigma</em> host species. Docosenamide production in <em>Rafflesia</em> buds and their hosts may facilitate parasitic infection, while coumarin compounds in non-host <em>Tetrastigma</em> species may exert allelopathic effects. The enrichment of gallic acid derivatives, the phytohormone adenine, and gall-associated bacteria suggests that <em>Rafflesia</em> buds may function similarly to plant galls, manipulating host tissues to support their reproductive development. This study highlights the dynamic microbial shifts during <em>Rafflesia’</em>s development, emphasizing its symbiotic relationship with microbial communities and hosts. In identifying essential microbial and chemical conditions that could improve propagation techniques, this research has practical applications in ex situ conservation efforts, aiding in the rescue of the world’s largest flowers from the brink of extinction.</div></div>","PeriodicalId":38090,"journal":{"name":"Current Plant Biology","volume":"42 ","pages":"Article 100456"},"PeriodicalIF":5.4,"publicationDate":"2025-02-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143348717","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}

{"title":"Removing limitations surrounding terpenoid biosynthesis by biotechnological techniques in Ferula sp.: A review","authors":"Zahra Aghaali ,&nbsp;Jun-Li Yang ,&nbsp;Mohammad Reza Naghavi ,&nbsp;Meisam Zargar","doi":"10.1016/j.cpb.2025.100455","DOIUrl":"10.1016/j.cpb.2025.100455","url":null,"abstract":"<div><div><em>Ferula</em> sp. has achieved widespread fame as a producer of specialized terpenoids used as raw materials in fragrances, food, cosmetics, and pharmaceutical industries. Since ancient times, <em>Ferula</em> species has been utilized to treat various health issues, such as asthma, toothache, inflammation, cancer, and digestive disorders. Besides, a growing body of research proves the healing efficacy of <em>Ferula</em> plants in treating modern diseases, such as multiple sclerosis (MS), HIV, and COVID19. The major challenge surrounding the commercialization of <em>Ferula</em>-derived terpenoids is their low quantity in <em>Ferula</em> plants. This necessitates the exploitation of approaches to circumvent this barrier and to enhance their production level to meet the continuous demands of industries for <em>Ferula</em> terpenoids. Recently, via functional genomics, omics technologies, and high-throughput analytical techniques, our understanding about terpenoid biosynthesis and regulation has been deepened, paving the way for the overproduction of target terpenoids. This review examines the potential of hairy root culture, CRISPR/Cas-mediated genome editing, and metabolic engineering, including gene overexpression and enzyme engineering, for enhancing <em>Ferula</em> capacity tailored to industrial and medicinal needs. The strategies present here, except hairy root culture, have never been proposed or applied in <em>Ferula</em> species. In its ultimate form, the proposed strategies are expected to reach large-scale terpenoid production.</div></div>","PeriodicalId":38090,"journal":{"name":"Current Plant Biology","volume":"41 ","pages":"Article 100455"},"PeriodicalIF":5.4,"publicationDate":"2025-02-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143301267","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}

{"title":"HPGCN: A graph convolutional network-based prediction model for herbal heat/cold properties","authors":"Qikai Niu ,&nbsp;Jing’ai Wang ,&nbsp;Hongtao Li ,&nbsp;Lin Tong ,&nbsp;Haiyu Xu ,&nbsp;Weina Zhang ,&nbsp;Ziling Zeng ,&nbsp;Sihong Liu ,&nbsp;Wenjing Zong ,&nbsp;Siqi Zhang ,&nbsp;Siwei Tian ,&nbsp;Huamin Zhang ,&nbsp;Bing Li","doi":"10.1016/j.cpb.2025.100448","DOIUrl":"10.1016/j.cpb.2025.100448","url":null,"abstract":"<div><div>Herbal properties are part of the fundamental theories of traditional Chinese medicine (TCM), which has been of great significance for herbal formulas and disease treatment in clinics for thousands of years. However, determining herbal properties, such as heat/cold, still relies on ancient books and the doctor's experience, which can present significant limitations. In this study, we propose an herbal property graph convolutional network (HPGCN) model by combining TCM theory, modern pharmacological mechanisms, prior knowledge of herbal properties, and intelligent algorithms, which can effectively predict herbal heat/cold properties. Based on protein-protein interactions (PPI) and herb-herb networks, 30 target genes were selected as features for herbal heat/cold property prediction. Compared to previous machine learning algorithms, the HPGCN obtained optimal classification prediction results for ACC, Recall, Precision, F1, and AUC indicators by 5-fold cross-validation on the training and test sets. The function of herbs predicted by HPGCN improved by 3 % in hit@k compared to predictions that did not account for herbal properties. Herbs with disputed heat/cold properties in ancient books (such as <em>Pulsatilliae Radix</em> and <em>Menthae Herba</em>) were predicted using recommended property probabilities. The proposed HPGCN model may have profound practical value and significance for elucidating the scientific mechanisms of herbal property theory and in herbal medicine development.</div></div>","PeriodicalId":38090,"journal":{"name":"Current Plant Biology","volume":"41 ","pages":"Article 100448"},"PeriodicalIF":5.4,"publicationDate":"2025-02-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143301256","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}

{"title":"The GbbZIP41 transcription factor participates in terpene trilactones biosynthesis in Ginkgo biloba L.","authors":"Nuo Wang,&nbsp;Yi Tu,&nbsp;Sirui Zeng,&nbsp;Jiabao Ye,&nbsp;Weiwei Zhang,&nbsp;Feng Xu,&nbsp;Yongling Liao","doi":"10.1016/j.cpb.2025.100449","DOIUrl":"10.1016/j.cpb.2025.100449","url":null,"abstract":"<div><div>Terpene trilactones (TTLs) are important secondary metabolites in ginkgo tree (<em>Ginkgo biloba</em>), which play a crucial role in the treatment of human cardiovascular disease and prevention of thrombosis, and have been widely used in food, medicine and health products. However, there are few studies on the transcriptional modulation of TTLs biosynthesis and gene regulatory network of TTLs biosynthesis remains unclear. Here, we screened the transcription factor GbbZIP41 that may be involved in the biosynthesis of TTLs and verified its function by transgenic technology. The results showed that GbbZIP41 is a protein located in the nucleus and encodes 477 amino acids, which is highly expressed in <em>G. biloba</em> leaves. The analysis of total terpene content and <em>GbbZIP41</em> gene expression in <em>G. biloba</em> leaves showed the opposite trend. In addition, the overexpression of <em>GbbZIP41</em> gene in tobacco reduced the content of terpenoids and down-regulated the enzyme genes of MVA pathway and MEP pathway. Therefore, these results suggested that GbbZIP41 negatively regulates the biosynthesis of TTLs by inhibiting key enzyme genes in the TTLs synthesis pathway.</div></div>","PeriodicalId":38090,"journal":{"name":"Current Plant Biology","volume":"41 ","pages":"Article 100449"},"PeriodicalIF":5.4,"publicationDate":"2025-01-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143134625","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}

{"title":"Dissection of the genetic loci for grain hardness and variation of the key genes in common wheat (Triticum aestivum L.)","authors":"Jinna Hou ,&nbsp;Pengge Sun ,&nbsp;Pei Yan ,&nbsp;Shenghui Geng ,&nbsp;Wenxu Li ,&nbsp;Maomao Qin ,&nbsp;Ziju Dai ,&nbsp;Baoming Tian ,&nbsp;Zhengqing Wu ,&nbsp;Zhengfu Zhou ,&nbsp;Changwen Li ,&nbsp;Zhensheng Lei","doi":"10.1016/j.cpb.2025.100451","DOIUrl":"10.1016/j.cpb.2025.100451","url":null,"abstract":"<div><div>Identification of genetic loci for grain hardness was widely concerned by geneticists and breeders. Heretofore numerous genetic loci (genes) associated with grain hardness were detected in crops by previous studies. However, the genetic network and molecular mechanism for hardness control have not been extensively elucidated in wheat. In the present study, an association population consisted with 207 wheat accessions was planted across three years and the grain hardness index (GHI) of each accession was measured. The genetic loci associated with GHI were dissected based on a high-throughput SNPs map through genome-wide association study (GWAS). Finally, eight QTL, which explained 8.29 % – 14.59 % of the phenotypic variation, were revealed on chromosomes 1 A, 1B, 3 A, 3B, 5 A, 5B and 5D (2). The previously reported major genes for GHI, <em>Pina</em> and <em>Pinb</em>, were anchored in <em>Qghi.5D-1</em>, which was repeatedly detected under all environments (BLUP included). The haplotypes of <em>Pina</em> and <em>Pinb</em> were discriminated in the association population. Totally, six haplotypes were identified and among them the haplotypes <em>Pina-D1a</em>/<em>PinbD1b</em> (56.77 %) and <em>Pina-Dla</em>/<em>Pinb-D1a</em> (31.25 %) accounted for the highest proportion. Addtionally, a novel haplotype, <em>Pina-null</em>/<em>Pinb-null</em>, was detected in <em>var</em>. ‘Longfumai4hao’. The novel haplotype caused by a large fragment (about 26 Kb) deletion spanning <em>Pina</em> and <em>Pinb</em> genomic region. Furthermore, six KASP markers were developed, among which four were used to discriminate haplotypes of <em>Pina</em> and <em>Pinb</em> and two were developed from the peak SNPs of the major QTL located on 1 A and 1B, respectively. The present results elucidated genetic loci for grain hardness in wheat, not only provide novel genes and germplasms for appropriate hardness wheat breeding, but also assist to reveal the molecular mechanism under grain hardness regulation and improve end-use quality in wheat.</div></div>","PeriodicalId":38090,"journal":{"name":"Current Plant Biology","volume":"41 ","pages":"Article 100451"},"PeriodicalIF":5.4,"publicationDate":"2025-01-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143135430","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}

{"title":"Natural variation in HD10.1 promoter causing delayed heading date in rice","authors":"Ruoju Yang ,&nbsp;Ying Bian ,&nbsp;Zhengjiu Zhang ,&nbsp;Xiaobo Zhang ,&nbsp;Junyi Gong ,&nbsp;Jiongjiong Fan","doi":"10.1016/j.cpb.2025.100445","DOIUrl":"10.1016/j.cpb.2025.100445","url":null,"abstract":"<div><div>Heading date is a critical agronomic trait in rice (<em>Oryza sativa</em> L.). Utilizing chromosome segment substitution lines (CSSLs) with the <em>indica</em> cultivar “Huanghuazhan” (HHZ) as the recipient parent and “Basmati Surkh 89–15” (BAS) as the donor parent, we identified a quantitative trait locus (QTL) regulating heading date, designated as <em>HD10.1</em>. In this study, we characterized a functionally defective allele of <em>HD10.1</em>^<em>BAS</em>, a novel allele of <em>Ehd1</em>. The divergence in the promoter region between <em>HD10.1</em>^<em>BAS</em> and <em>HD10.1</em>^<em>HHZ</em> results in reduced transcriptional expression of <em>HD10.1</em>^<em>BAS</em> in NIL-<em>HD10.1</em>^<em>BAS</em>, leading to a delay in heading by approximately 10 days compared to NIL-<em>HD10.1</em>^<em>HHZ</em> under long-day conditions. An insertion-deletion (InDel) within the <em>HD10.1</em>^<em>BAS</em> promoter may be a key factor contributing to its decreased transcriptional activity. Moreover, our findings suggest that the introgression of <em>HD10.1</em>^<em>BAS</em> into the HHZ cultivar exhibits potential for yield improvement. This study provides valuable genetic resources for molecular breeding strategies aimed at optimizing heading date while simultaneously enhancing yield in rice.</div></div>","PeriodicalId":38090,"journal":{"name":"Current Plant Biology","volume":"41 ","pages":"Article 100445"},"PeriodicalIF":5.4,"publicationDate":"2025-01-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143135429","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}

{"title":"Plastic hotspot areas in riverine habitats: Riparian vegetation diversity and structure entrap riverine plastics","authors":"Luca Gallitelli ,&nbsp;Maurizio Cutini ,&nbsp;Giulia Cesarini ,&nbsp;Massimiliano Scalici","doi":"10.1016/j.cpb.2025.100450","DOIUrl":"10.1016/j.cpb.2025.100450","url":null,"abstract":"<div><div>Plastics are a significant environmental problem, accumulating in ecosystems and causing harmful effects. While macroplastics in rivers have only recently gained attention, most studies focus on their transport to the sea, neglecting the fact that plastics often remain within fluvial systems. Previous research has primarily considered abiotic factors in this transport process. However, recent findings indicate that vegetation plays a crucial role in trapping plastics in urban and lowland watercourses. The role and structure of riparian vegetation in plastic entrapment are poorly understood. This study investigates the relationship between vegetation structure and plastic entrapment applying the 3D Vegetation Index (3DVI) to quantify vegetation complexity and its capacity to trap plastics. Field data on plastics and vegetation were collected from six rivers in central Italy across three riverine zones. Results show a significant correlation between macroplastics trapped in vegetation and vegetation structure, with denser and more diverse plant communities trapping more plastics. Particularly, a significant regression between 3DVI and plastics in vegetation was observed only in the lower river zone. The higher the 3DVI value, the more complex the vegetation, indicating greater plastic trapping efficiency. These findings suggest that biotic factors, particularly vegetation structure, are important variables for driving riverine plastic entrapment at local scales. This study is the first to apply a vegetation index to describe the complexity and diversity of plant communities related to plastic entrapment. Future research urgently needs to unveil this <em>phenomenon</em> at a global scale as well as to focus on the interactions and effects of macroplastics on plants. Understanding plant structures and 3DVI usage in retaining plastics can help identify plastic hotspot areas and inform mitigation and clean-up efforts to address plastic pollution effectively.</div></div>","PeriodicalId":38090,"journal":{"name":"Current Plant Biology","volume":"41 ","pages":"Article 100450"},"PeriodicalIF":5.4,"publicationDate":"2025-01-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143134627","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}

{"title":"Phosphorus fertilizer and arbuscular mycorrhizal fungi application improves bitter melon fruit yield and some phytochemical compounds under irrigation deficit stress","authors":"Narges Dolatmand-Shahri ,&nbsp;Seyed Ali Mohammad Modarres-Sanavy ,&nbsp;Mohammad Hossein Mirjalili ,&nbsp;Ali Mokhtassi-Bidgoli","doi":"10.1016/j.cpb.2025.100446","DOIUrl":"10.1016/j.cpb.2025.100446","url":null,"abstract":"<div><div>Drought stress is among the most effective limitations of the yield and quality of agricultural products, and the application of arbuscular mycorrhizal fungi (AMF) is a proposed method for increasing plant resistance to adverse effects of water deficit stress. A two-year field trial was implemented using a split factorial design within a randomized complete block framework with three replications. Three irrigation levels, including irrigation following 20 %, 50 %, and 80 % available soil water discharge (ASWD), were distributed randomly in the main plots, and a factorial combination of phosphorus (P) fertilizer (with and without P) and AMF (<em>Glomus mosseae</em>, <em>Glomus intraradices</em>, and non-inoculation) were placed randomly in the sub-plots. Investigations determined that by decreasing irrigation at a level of 80 % ASWD, the number and weight of total fruit, chlorophyll, and leaf P compared to 20 % ASWD showed a decrease and electrolyte leakage (EL), MDA, enzyme antioxidants (CAT, APX, PPO), and non-enzymatic (carotenoid, flavonoid, anthocyanin), and fruit secondary metabolites (rutin, momordicin, charantin) increased. AMF inoculation and P fertilizer, although decreased MDA and EL, increased enzyme and non-enzymatic antioxidants and secondary metabolites of fruit. Bitter melon fruit weight improved under inoculation with AMF and P (with and without P fertilizer) at all irrigation levels. Reduced irrigation increased the momordicin and charantin, but the combination of AMF and P had no significant effect. This method offers valuable innovation in improving yield, enhancing secondary metabolites, reducing the need for P fertilizer, and optimizing water and soil resource management, which is especially important in the sustainable production of medicinal plants in water-deficit areas.</div></div>","PeriodicalId":38090,"journal":{"name":"Current Plant Biology","volume":"42 ","pages":"Article 100446"},"PeriodicalIF":5.4,"publicationDate":"2025-01-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143445469","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}

{"title":"Comparative transcriptome and co-expression network analysis uncovers the regulatory mechanism of silicon-induced soybean defense against charcoal rot disease","authors":"Pravin Jadhav ,&nbsp;Sayali Magar ,&nbsp;Parva Sharma ,&nbsp;Umesh Shinde ,&nbsp;Eknath Vaidya ,&nbsp;Mangesh Moharil ,&nbsp;Sarika Jaiswal ,&nbsp;Satish Nichal ,&nbsp;Rajiv Ghawade ,&nbsp;Mir Asif Iquebal ,&nbsp;Prashant Kawar ,&nbsp;Pritam Jadhav ,&nbsp;Sanjay Sakhare ,&nbsp;Rameshwar Ghorade ,&nbsp;Rupesh Deshmukh ,&nbsp;Humira Sonah ,&nbsp;Dinesh Kumar ,&nbsp;Vineet Kumar ,&nbsp;Vilas Kharche ,&nbsp;Shyamsunder Mane","doi":"10.1016/j.cpb.2025.100442","DOIUrl":"10.1016/j.cpb.2025.100442","url":null,"abstract":"<div><div>Soybean (<em>Glycine max</em> L.) is highly susceptible to charcoal rot caused by the soil-borne pathogen <em>Macrophomina phaseolina</em>, which can reduce yields by up to 70 %. Effective control methods are lacking, and information on managing the disease is limited. This study investigates how potassium silicate (1.7 mM K₂SiO₃) enhances soybean resistance to charcoal rot. The treatment significantly improved plant health, reducing the mortality rate of the susceptible genotype TAMS-38 from 69.7 % to 9 %. RNA sequencing revealed 3106 differentially expressed genes linked to disease resistance. Resistant genotypes showed upregulation of genes involved in key defense pathways, enhancing resistance mechanisms against charcoal rot including Pathogenesis-Related Protein 1 (PR1) for Systemic Acquired Resistance (SAR) and Salicylic Acid (SA) pathway, Stress-induced protein H4 for Heat Shock Protein (HSP) Pathway, disease resistance proteins for <em>Resistance</em> gene and Mitogen-Activated Protein Kinase (MAPK) pathways, pleiotropic drug resistance proteins for detoxification, basic secretory protein (BSP) domain for cell wall reinforcement, NRT1/PTR FAMILY 2.13 for nutrient management, receptor-like kinases for pathogen detection, Pruav 1 for resistance, Dehydration responsive element-binding protein 3 (DREB3) for abscisic acid (ABA) signalling in drought, and chitinase class I precursor for fungal cell wall breakdown. A total of 41 key differentially regulated genes were identified, with 8 validated by qRT-PCR, showing potential for genetic improvement and breeding. These findings provide a basis for developing strategies to combat charcoal rot and improve soybean resilience against <em>Macrophomina phaseolina</em>.</div></div>","PeriodicalId":38090,"journal":{"name":"Current Plant Biology","volume":"41 ","pages":"Article 100442"},"PeriodicalIF":5.4,"publicationDate":"2025-01-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143134617","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}

{"title":"Diurnal nectar secretion dynamics in Roscoea cautleoides (Zingiberaceae) reveal the role of non-sugar chemicals in plant–pollinator interaction","authors":"Wen-Jing Wang ,&nbsp;Ya-Ting Lin ,&nbsp;Hong-Fan Chen ,&nbsp;Mei-Yuan Huang ,&nbsp;Zong-Xin Ren ,&nbsp;Jian-Li Zhao","doi":"10.1016/j.cpb.2025.100443","DOIUrl":"10.1016/j.cpb.2025.100443","url":null,"abstract":"<div><div>Floral nectar is essential for plant-pollinator interactions, directly influencing plant reproduction. Although the composition of nectar has been widely studied, the daily dynamics of non-sugar components in the nectar remain unknown. In this study, we investigated the diurnal dynamics of nectar volume, composition, and pollinator visitation in an alpine ginger (<em>Roscoea cautleoides</em>). By integrating metabolomics and transcriptomics, we explored the daily variations in nectar chemical composition and the gene expression in nectaries, with a specific focus on nectar metabolites from bagged flowers. We found that the nectar volume peaked at ∼2.5 μL per flower in the early afternoon, whereas the pollinator visitation attained its highest level in the late afternoon. Meanwhile, the nectar volume in bagged flowers increased by ∼40 % from morning to afternoon but consistently remained lower than that of flowers exposed to pollinator visitation. While sugar content remained stable throughout the day, non-sugar metabolites varied significantly. Notably, daily variations in arachidonic acid levels were positively correlated with the expression of the <em>RcSUZ</em> gene in nectaries, suggesting a molecular link between non-sugar metabolites and gene regulation. These findings indicate that non-sugar metabolites may serve as a rapid response mechanism to pollinator visitation, potentially modulated by gene expression. Moreover, the results further demonstrate that <em>R. cautleoides</em> flowers rapidly adjust their nectar chemistry in response to pollinator behaviour in a day, providing valuable insights into the molecular and ecological mechanisms underlying plant-pollinator interactions and reproductive adaptations.</div></div>","PeriodicalId":38090,"journal":{"name":"Current Plant Biology","volume":"41 ","pages":"Article 100443"},"PeriodicalIF":5.4,"publicationDate":"2025-01-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143135415","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}