Plant CommunicationsPub Date : 2025-09-08Epub Date: 2025-06-21DOI: 10.1016/j.xplc.2025.101425
Shuang Wang, Xia Zhang, Dao-Hong Gong, Qiu-Qian Huang, W M W W Kandegama, Milen I Georgiev, Yang-Yang Gao, Pan Liao, Ge-Fei Hao
{"title":"Sophisticated crosstalk of tryptophan-derived metabolites in plant stress responses.","authors":"Shuang Wang, Xia Zhang, Dao-Hong Gong, Qiu-Qian Huang, W M W W Kandegama, Milen I Georgiev, Yang-Yang Gao, Pan Liao, Ge-Fei Hao","doi":"10.1016/j.xplc.2025.101425","DOIUrl":"10.1016/j.xplc.2025.101425","url":null,"abstract":"<p><p>Plants are frequently threatened by diverse stresses that severly impact their health and constrain crop productivity worldwide. Metabolic regulation serves as an important strategy for enhancing plant stress tolerance. Tryptophan, as a precursor of various plant natural products, including auxin, melatonin, and glucosinolates, plays a crucial role in maintaining plant health. To date, substantial progress has been made in elucidating tryptophan metabolism, particularly its involvement in improving plant stress tolerance. However, a systematic discussion of the crosstalk among tryptophan metabolites in protecting plants from stresses remains absent. Here, we explore tryptophan metabolism and its associated crosstalk regulation under stress conditions. We provide an overview of the biosynthesis and biofunctions of tryptophan metabolites, with a primary focus on their crosstalk in regulating plant stress resistance. The potential applications of tryptophan metabolism in stress adaptation are also examined. This work aims to establish a fundamental framework for understanding the regulatory roles of tryptophan metabolites in plant health and their mechanisms in sustainable agriculture.</p>","PeriodicalId":52373,"journal":{"name":"Plant Communications","volume":" ","pages":"101425"},"PeriodicalIF":11.6,"publicationDate":"2025-09-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC12447450/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144369532","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"生物学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Yuanyuan Zhang, Dongjiao Wang, Zheng Qing Fu, Youxiong Que
{"title":"Cracking the mysteries of resistance to sheath blight disease: SBRR1 plays a pivotal role.","authors":"Yuanyuan Zhang, Dongjiao Wang, Zheng Qing Fu, Youxiong Que","doi":"10.1016/j.xplc.2025.101520","DOIUrl":"10.1016/j.xplc.2025.101520","url":null,"abstract":"","PeriodicalId":52373,"journal":{"name":"Plant Communications","volume":" ","pages":"101520"},"PeriodicalIF":11.6,"publicationDate":"2025-09-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145016629","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"生物学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Adam Gauley, India Lacey, Pablo González-Suárez, Harry Taylor, Dominique Hirsz, Sadiye Hayta, Mark Smedley, Wendy Harwood, Simon Griffiths, Shifeng Cheng, Laura Dixon
{"title":"Fine-tuning wheat development for the winter to spring transition.","authors":"Adam Gauley, India Lacey, Pablo González-Suárez, Harry Taylor, Dominique Hirsz, Sadiye Hayta, Mark Smedley, Wendy Harwood, Simon Griffiths, Shifeng Cheng, Laura Dixon","doi":"10.1016/j.xplc.2025.101501","DOIUrl":"10.1016/j.xplc.2025.101501","url":null,"abstract":"<p><p>The coordination of floral developmental stages with the environment is important for reproductive success and optimization of crop yields. The timing of different developmental stages contributes to final yield potential, with optimal adaptation enabling development to proceed without being impacted by seasonal weather events, including frosts or end-of-season drought. Here, we characterize the role of FLOWERING LOCUS T 3 (FT3) in hexaploid bread wheat (Triticum aestivum) during the early stages of floral development. By assaying the genetic diversity of landraces and modern wheat varieties, we identified a distribution of alleles for FT3 that indicated selection in modern varieties. We generated transgenic overexpression lines and found that FT3 is as powerful a florigen as FT1, which suggested that FT3 is under tight regulation. To investigate this possibility, we measured FT3 expression under variable environmental conditions and identified a role for both temperature and photoperiod in FT3 regulation. Gene expression analysis showed that FT3 transcription is partly coordinated by a temperature-sensitive pathway consisting of a TEOSINTE BRANCHED 1-CYCLOIDEA-PROLIFERATING CELL FACTOR (TCP) transcription factor and a warm-temperature-responsive microRNA. We show that this regulation is important for the timing of floral development under short days combined with lower ambient temperatures and that there has been strong selection on FT3 during cultivation. Deploying this understanding to enable targeted combinations of alleles involved in adaptation will further our ability to develop climate-change-robust cultivars.</p>","PeriodicalId":52373,"journal":{"name":"Plant Communications","volume":" ","pages":"101501"},"PeriodicalIF":11.6,"publicationDate":"2025-09-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145008515","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"生物学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Shuai-Ya Hu, Gongle Shi, Cheng-Ao Yang, Yves Van de Peer, Zhen Li, Jia-Yu Xue
{"title":"Comprehensive sampling from mitochondrial genomes substantiates the Neoproterozoic origin of land plants.","authors":"Shuai-Ya Hu, Gongle Shi, Cheng-Ao Yang, Yves Van de Peer, Zhen Li, Jia-Yu Xue","doi":"10.1016/j.xplc.2025.101497","DOIUrl":"https://doi.org/10.1016/j.xplc.2025.101497","url":null,"abstract":"<p><p>Molecular phylogenetics illustrates the evolution and divergence of green plants by employing sequence data from various sources. Interestingly, phylogenetic reconstruction based on mitochondrial genes tends to exhibit incongruence with those derived from nuclear and chloroplast genes. Although the uniparental inheritance and conservatively retained protein-coding genes of mitochondrial genomes inherently exclude certain potential factors that affect phylogenetic reconstruction, such as hybridization and gene loss, the utilization of mitochondrial genomes for phylogeny and divergence time estimation remains limited. Here, we meticulously assembled a comprehensive dataset comprising 565 mitochondrial genomes spanning all major lineages of green plants. Using multiple partitions and phylogenetic models, our phylogenies based on mitochondrial genes support paraphyly for both bryophytes and charophytes, place hornworts (Anthocerotaceae) as sister to all tracheophytes, and recover stonewort (Charophyceae) as sister to land plants. We systematically assessed potential impact factors in mitochondrial coding sequences, such as GC-content heterogeneity and codon-usage bias. Further, by rigorously testing seven different dating strategies, we examined the impact of various confounding factors that may affect divergence time estimation, including various numbers and prior settings of fossil calibrations, and rate heterogeneity among sites and across lineages. Our dating results support a Neoproterozoic origin (i.e., Crown age) of land plants and a Triassic origin of angiosperms, as also supported by nuclear data. In conclusion, we particularly underscore the significance of exploring different partitioning strategies and addressing among-lineage heterogeneity in both phylogenetic and dating analyses by extending sampling combined with meticulous data pruning to mitigate the influence of systematic errors in phylogenetic inference.</p>","PeriodicalId":52373,"journal":{"name":"Plant Communications","volume":" ","pages":"101497"},"PeriodicalIF":11.6,"publicationDate":"2025-09-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145008552","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"生物学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
{"title":"Phytochrome B stabilizes the KNOX transcription factor BP/KNAT1 to promote light-initiated seed germination in Arabidopsis thaliana.","authors":"Dachuan Gu, Yahan Wang, Minglei Zhao, Hangcong Chen, Suhua Wu, Xia Jin, Ling Deng, Rujun Ji, Jinyan Xu, Feng Zheng, Xuncheng Liu","doi":"10.1016/j.xplc.2025.101517","DOIUrl":"https://doi.org/10.1016/j.xplc.2025.101517","url":null,"abstract":"<p><p>Seed germination is a critical step in the life cycle of plants. The far-red/red light photoreceptor phytochrome B (phyB) plays a dominant role in promoting seed germination, mainly by modulating the metabolism of gibberellin (GA) and abscisic acid (ABA), although the underlying mechanism remains poorly understood. In this study, we identified BREVIPEDICELLUS (BP)/KNAT1, a KNOX transcription factor that acted downstream of phyB and activated light-initiated seed germination in Arabidopsis thaliana. BP underwent ubiquitination modification and was degraded through the 26S proteasome pathway. PhyB directly interacted with BP in vitro and in vivo and stabilized BP protein by decreasing its ubiquitination in imbibed seeds. A genome-wide transcriptomic analysis revealed that BP and phyB co-regulated the expression of genes related to ABA biosynthesis and signaling transduction, seed dormancy, and cell wall organization. BP repressed the expression of two key ABA biosynthetic genes, NCED6 and NCED9, and decreased ABA levels in imbibed seeds under phyB-activated conditions. BP directly bound to NCED6 and NCED9 and repressed their expression by increasing the levels of H3K27me3, a repressive histone modification marker. Genetic analysis revealed that NCED6/NCED9 acted epistasis of BP in phyB-dependent seed germination. Taken together, this study reveals a transcriptional module consisting of phyB-BP-NCED6/9, which transfers light signals that inhibit ABA biosynthesis, thereby promoting light-induced seed germination.</p>","PeriodicalId":52373,"journal":{"name":"Plant Communications","volume":" ","pages":"101517"},"PeriodicalIF":11.6,"publicationDate":"2025-09-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145006849","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"生物学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Qing-Song Yuan, Lu Luo, Haixia Shi, Hui Wang, Jiuchun An, Yanping Gao, Jiao Xu, Xiaohong Ou, Ye Yang, Karim M Tabl, Lanping Guo, Luqi Huang, Tao Zhou
{"title":"Fungal symbiont Mycena complements impaired nitrogen utilization in Gastrodia elata and supplies indole-3-acetic acid to facilitate its seed germination.","authors":"Qing-Song Yuan, Lu Luo, Haixia Shi, Hui Wang, Jiuchun An, Yanping Gao, Jiao Xu, Xiaohong Ou, Ye Yang, Karim M Tabl, Lanping Guo, Luqi Huang, Tao Zhou","doi":"10.1016/j.xplc.2025.101500","DOIUrl":"10.1016/j.xplc.2025.101500","url":null,"abstract":"<p><p>Nitrogen and auxin uptake play pivotal roles in seed germination and development. Gastrodia elata, a fully mycoheterotrophic plant, depends entirely on its symbiotic association with Mycena for early growth and seed germination. The process by which Mycena supplies nitrogen nutrients and auxin, which are deficient in G. elata, remains poorly understood. In this study, genome-scale analysis of G. elata revealed the loss of genes associated with nitrogen utilization and indole-3-acetic acid (IAA) biosynthesis, which are retained in Mycena. Further analysis of the dynamic transcriptomic interactions between G. elata seeds and Mycena across different symbiotic stages revealed that genes involved in nitrogen- and tryptophan-dependent IAA biosynthesis were significantly upregulated in Mycena during the symbiotic germination of G. elata seeds. Concurrently, G. elata seeds exhibited increased expression of genes involved in the hormone signal transduction pathway and the starch and sucrose metabolism pathway. Functional disruption of nitrite reductase (MyNir, EVM0012344) and amidase (MyAmid, EVM0010270), key enzymes in nitrogen assimilation and IAA biosynthesis in Mycena, significantly impaired the symbiotic germination of G. elata seeds. This disruption interfered with energy supply, caused cellular restructuring, and altered hormonal signaling crosstalk. In conclusion, our findings provide novel insights into the mutualistic symbiotic relationship between Mycena and G. elata. Specifically, the fungus Mycena compensates for the incomplete nitrogen metabolism of its plant partner, G. elata, and supplies IAA, thereby promoting seed germination. These results shed light on plant-fungal symbiotic associations from the perspective of nitrogen utilization.</p>","PeriodicalId":52373,"journal":{"name":"Plant Communications","volume":" ","pages":"101500"},"PeriodicalIF":11.6,"publicationDate":"2025-09-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144994346","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"生物学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Le Liu, Zhao Liu, Liqiang Fan, Mengli Yu, Ghulam Qanmber, Longfei Wang, Yujun Li, Fuguang Li, Shuangxia Jin, Zuoren Yang
{"title":"Natural variation in the GhTTL promoter modulates cotton fiber elongation through the GhTALE-GhTTL-GhBIN2 module.","authors":"Le Liu, Zhao Liu, Liqiang Fan, Mengli Yu, Ghulam Qanmber, Longfei Wang, Yujun Li, Fuguang Li, Shuangxia Jin, Zuoren Yang","doi":"10.1016/j.xplc.2025.101498","DOIUrl":"10.1016/j.xplc.2025.101498","url":null,"abstract":"<p><p>In cotton, fiber length is a key determinant of industrial utility and is one of the most important agricultural traits shaped during domestication. However, the genetic determinants and molecular mechanisms underlying natural variation in fiber length remain poorly characterized. In this study, we identified GhTTL as a critical positive regulator of fiber elongation through genome-wide association study (GWAS). Natural polymorphisms in the cis-regulatory element of theGhTTL promoter region were found to significantly affect its binding affinity for the transcription factor GhTALE, thereby modulating GhTTL expression across diverse cotton populations. Mechanistic investigations revealed that GhTTL interacts with GhBIN2, a central negative regulator of the brassinosteroid (BR) signaling pathway, and anchors it to the cell membrane. This reduces cytoplasmic GhBIN2 levels, preventing it from associating with GhBES1, a master transcription factor of BR signaling. As a result, GhBES1 localizes to the nucleus, where it promotes fiber cell elongation. These findings elucidate the molecular basis of natural variation in cotton fiber length and provide deeper insights into the regulation of fiber elongation. In addition, this study identifies potential targets for genetic improvement to enhance cotton fiber quality and yield.</p>","PeriodicalId":52373,"journal":{"name":"Plant Communications","volume":" ","pages":"101498"},"PeriodicalIF":11.6,"publicationDate":"2025-09-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144994327","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"生物学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
José D Fernández, David Navarro-Payá, Antonio Santiago, Ariel Cerda, Jonathan Canan, Sebastián Contreras-Riquelme, Tomás C Moyano, Diego Landaeta-Sepúlveda, Lorena Melet, Javier Canales, Nathan R Johnson, José M Álvarez, José Tomás Matus, Elena A Vidal
{"title":"Organ-level gene-regulatory networks inferred from transcriptomic data reveal context-specific regulation and highlight novel regulators of ripening and ABA-mediated responses in tomato.","authors":"José D Fernández, David Navarro-Payá, Antonio Santiago, Ariel Cerda, Jonathan Canan, Sebastián Contreras-Riquelme, Tomás C Moyano, Diego Landaeta-Sepúlveda, Lorena Melet, Javier Canales, Nathan R Johnson, José M Álvarez, José Tomás Matus, Elena A Vidal","doi":"10.1016/j.xplc.2025.101499","DOIUrl":"10.1016/j.xplc.2025.101499","url":null,"abstract":"<p><p>Tomato (Solanum lycopersicum) is a globally important crop, yet the gene-regulatory networks (GRNs) that control its gene expression remain poorly understood. In this study, we constructed GRNs for roots, leaves, flowers, fruits, and seeds by inferring transcription factor (TF)-target interactions from over 10 000 RNA-sequencing libraries using the GENIE3 algorithm. We refined these networks using gene co-expression data and computational predictions of TF binding sites. Our networks confirmed key regulators in important processes, including TOMATO AGAMOUS LIKE 1 and RIPENING INHIBITOR in fruit ripening, and SlABF2, SlABF3, and SlABF5 in abscisic acid (ABA) response in leaves. In addition, we identified novel candidate regulators, including AUXIN RESPONSE FACTOR 2A and ETHYLENE RESPONSE FACTOR E2 in fruit ripening and G-BOX BINDING FACTOR 3 (SlGBF3) in ABA-related and drought pathways. To further validate the GRNs, we performed DNA affinity purification sequencing for SlGBF3 and confirmed the accuracy of our GRN predictions. This study provides a valuable resource for dissecting transcriptional regulation in tomato, with potential applications in crop improvement. The GRNs are publicly accessible through a user-friendly web platform at https://plantaeviz.tomsbiolab.com/tomviz.</p>","PeriodicalId":52373,"journal":{"name":"Plant Communications","volume":" ","pages":"101499"},"PeriodicalIF":11.6,"publicationDate":"2025-09-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145001963","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"生物学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}