Plant Communications最新文献

{"title":"Aluminum resistance in plants: A critical review focusing on STOP1.","authors":"Chao-Feng Huang, Yingtang Ma","doi":"10.1016/j.xplc.2024.101200","DOIUrl":"10.1016/j.xplc.2024.101200","url":null,"abstract":"<p><p>Aluminum (Al) toxicity poses a significant challenge for plant production on acidic soils, which constitute approximately 30% of the world's ice-free land. To combat Al toxicity, plants have evolved both external and internal detoxification mechanisms. The zinc-finger transcription factor STOP1 (SENSITIVE TO PROTON RHIZOTOXICITY 1) plays a critical and conserved role in Al resistance by inducing genes involved in both external exclusion and internal detoxification mechanisms. Recent studies have uncovered multiple layers of post-transcriptional regulation of STOP1 and have elucidated mechanisms by which plants sense Al and activate signaling cascades that regulate STOP1 function. This review offers a comprehensive overview of the mechanisms through which STOP1 and its homologs confer Al resistance in plants, with a particular focus on Arabidopsis thaliana and rice. Additionally, we discuss recent advances and future perspectives in understanding the post-transcriptional regulation of STOP1, as well as the Al sensing and signaling pathways upstream of STOP1.</p>","PeriodicalId":52373,"journal":{"name":"Plant Communications","volume":" ","pages":"101200"},"PeriodicalIF":9.4,"publicationDate":"2025-02-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC11897453/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142774622","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}

{"title":"Convergent evolution in angiosperms adapted to cold climates.","authors":"Shuo Wang, Jing Li, Ping Yu, Liangyu Guo, Junhui Zhou, Jian Yang, Wenwu Wu","doi":"10.1016/j.xplc.2025.101258","DOIUrl":"10.1016/j.xplc.2025.101258","url":null,"abstract":"<p><p>Convergent and parallel evolution occur more frequently than previously thought. Here, we focus on the evolutionary adaptations of angiosperms at sub-zero temperatures. We begin by introducing the history of research on convergent and parallel evolution, defining all independent similarities as convergent evolution. Our analysis reveals that frost zones (periodic or constant), which cover 49.1% of Earth's land surface, host 137 angiosperm families, with over 90% of their species thriving in these regions. In this context, we revisit the global biogeography and evolutionary trajectories of plant traits, such as herbaceous form and deciduous leaves, that are thought to be evasion strategies for frost adaptation. At the physiological and molecular levels, many angiosperms have independently evolved cold acclimation mechanisms through multiple pathways in addition to the well-characterized C-repeat binding factor/dehydration-responsive element binding protein 1 (CBF/DREB1) regulatory pathway. These convergent adaptations have occurred across various molecular levels, including amino acid substitutions and changes in gene duplication and expression within the same or similar functional pathways; however, identical amino acid changes are rare. Our results also highlight the prevalence of polyploidy in frost zones and the occurrence of paleopolyploidization events during global cooling. These patterns suggest repeated evolution in cold climates. Finally, we discuss plant domestication and predict climate zone shifts due to global warming and their effects on plant migration and in situ adaptation. Overall, the integration of ecological and molecular perspectives is essential for understanding and forecasting plant responses to climate change.</p>","PeriodicalId":52373,"journal":{"name":"Plant Communications","volume":" ","pages":"101258"},"PeriodicalIF":9.4,"publicationDate":"2025-02-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC11897497/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143030316","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}

{"title":"Selection of dysfunctional alleles of bHLH1 and MYB1 has produced white grain in the tribe Triticeae.","authors":"Jiawei Pei, Zheng Wang, Yanfang Heng, Zhuo Chen, Ke Wang, Qingmeng Xiao, Jian Li, Zhaorong Hu, Hang He, Ying Cao, Xingguo Ye, Xing Wang Deng, Zhijin Liu, Ligeng Ma","doi":"10.1016/j.xplc.2025.101265","DOIUrl":"10.1016/j.xplc.2025.101265","url":null,"abstract":"<p><p>Grain color is a key agronomic trait that greatly determines food quality. The molecular and evolutionary mechanisms that underlie grain-color regulation are also important questions in evolutionary biology and crop breeding. Here, we confirm that both bHLH and MYB genes have played a critical role in the evolution of grain color in Triticeae. Blue grain is the ancestral trait in Triticeae, whereas white grain caused by bHLH or MYB dysfunctions is the derived trait. HvbHLH1 and HvMYB1 have been the targets of selection in barley, and dysfunctions caused by deletion(s), insertion(s), and/or point mutation(s) in the vast majority of Triticeae species are accompanied by a change from blue grain to white grain. Wheat with white grains exhibits high seed vigor under stress. Artificial co-expression of ThbHLH1 and ThMYB1 in the wheat endosperm or aleurone layer can generate purple grains with health benefits and blue grains for use in a new hybrid breeding technology, respectively. Our study thus reveals that white grain may be a favorable derived trait retained through natural or artificial selection in Triticeae and that the ancient blue-grain trait could be regained and reused in molecular breeding of modern wheat.</p>","PeriodicalId":52373,"journal":{"name":"Plant Communications","volume":" ","pages":"101265"},"PeriodicalIF":9.4,"publicationDate":"2025-01-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143076555","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":"The CRY1-COP1-HY5 axis mediates blue-light regulation of Arabidopsis thermotolerance.","authors":"Siyuan Liu, Qiongli Wang, Ming Zhong, Guifang Lin, Meiling Ye, Youren Wang, Jing Zhang, Qin Wang","doi":"10.1016/j.xplc.2025.101264","DOIUrl":"10.1016/j.xplc.2025.101264","url":null,"abstract":"<p><p>High-temperature stress, also referred to as heat stress, often has detrimental effects on plant growth and development. Phytochromes have been implicated in the regulation of plant heat-stress responses, but the role of blue-light receptors, such as cryptochromes, in plant blue-light-dependent heat-stress responses remains unclear. We found that cryptochrome 1 (CRY1) negatively regulates heat-stress tolerance (thermotolerance) in Arabidopsis. Heat stress represses CRY1 phosphorylation. Unphosphorylated CRY1 exhibits decreased activity in suppressing the interaction of CONSTITUTIVE PHOTOMORPHOGENIC 1 (COP1) with ELONGATED HYPOCOTYL 5 (HY5), leading to excessive degradation of HY5 under heat stress in blue light. This reduction in HY5 protein levels subsequently relieves its repression of the transcription of HY5 target genes, especially the heat-shock transcription factors. Our study thus reveals a novel mechanism by which CRY1-mediated blue-light signaling suppresses plant thermotolerance and highlights the dual function of the CRY1-COP1-HY5 module in both light- and heat-stress signaling, providing insights into how plants integrate heat stress and light signals to optimize their survival under heat stress.</p>","PeriodicalId":52373,"journal":{"name":"Plant Communications","volume":" ","pages":"101264"},"PeriodicalIF":9.4,"publicationDate":"2025-01-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143069608","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":"A DOF transcriptional repressor-gibberellin feedback loop plays a crucial role in modulating light-independent seed germination.","authors":"Andrea Lepri, Hira Kazmi, Gaia Bertolotti, Chiara Longo, Sara Occhigrossi, Luca Quattrocchi, Mirko De Vivo, Daria Scintu, Noemi Svolacchia, Danuse Tarkowska, Veronika Tureckova, Miroslav Strnad, Marta Del Bianco, Riccardo Di Mambro, Paolo Costantino, Sabrina Sabatini, Raffaele Dello Ioio, Paola Vittorioso","doi":"10.1016/j.xplc.2025.101262","DOIUrl":"10.1016/j.xplc.2025.101262","url":null,"abstract":"<p><p>Plants have evolved several strategies to cope with the ever-changing environment. One example of this is given by seed germination, which must occur when environmental conditions are suitable for plant life. In the model system Arabidopsis thaliana seed germination is induced by light; however, in nature, seeds of several plant species can germinate regardless of this stimulus. While the molecular mechanisms underlying light-induced seed germination are well understood, those governing germination in the dark are still vague, mostly due to the lack of suitable model systems. Here, we employ Cardamine hirsuta, a close relative of Arabidopsis, as a powerful model system to uncover the molecular mechanisms underlying light-independent germination. By comparing Cardamine and Arabidopsis, we show that maintenance of the pro-germination hormone gibberellin (GA) levels prompt Cardamine seeds to germinate under both dark and light conditions. Using genetic and molecular biology experiments, we show that the Cardamine DOF transcriptional repressor DOF AFFECTING GERMINATION 1 (ChDAG1), homologous to the Arabidopsis transcription factor DAG1, is involved in this process functioning to mitigate GA levels by negatively regulating GA biosynthetic genes ChGA3OX1 and ChGA3OX2, independently of light conditions. We also demonstrate that this mechanism is likely conserved in other Brassicaceae species capable of germinating in dark conditions, such as Lepidium sativum and Camelina sativa. Our data support Cardamine as a new model system suitable for studying light-independent germination studies. Exploiting this system, we have also resolved a long-standing question about the mechanisms controlling light-independent germination in plants, opening new frontiers for future research.</p>","PeriodicalId":52373,"journal":{"name":"Plant Communications","volume":" ","pages":"101262"},"PeriodicalIF":9.4,"publicationDate":"2025-01-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143061451","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":"Two pathogen-inducible UDP-glycosyltransferases, UGT73C3 and UGT73C4, catalyze the glycosylation of pinoresinol to promote plant immunity in Arabidopsis.","authors":"Shuman Zhao, Guangrui Dong, Chonglin Liu, Yi Ding, Yuqing Ma, Xinmei Ma, Xianqin Yang, Lijing Liu, Bingkai Hou","doi":"10.1016/j.xplc.2025.101261","DOIUrl":"10.1016/j.xplc.2025.101261","url":null,"abstract":"<p><p>UDP-glycosyltransferases (UGTs) constitute the largest glycosyltransferase family in the plant kingdom, regulating many metabolic processes by transferring sugar moieties onto various small molecules. However, their physiological significance in plants remains largely unknown. Here, we reveal the functions and mechanisms of two Arabidopsis UGT genes, UGT73C3 and UGT73C4, which are strongly induced by Pseudomonas syringae pv. tomato (Pst) DC3000. Overexpression of these genes significantly enhanced plant immune response, whereas their loss of function in double mutants led to increased sensitivity to pathogen infections. However, single mutants showed no obvious alteration in pathogen resistance. To further investigate the regulatory mechanisms of UGT73C3/C4 in plant immunity, we conducted comprehensive secondary metabolome analyses and glycoside quantification. Overexpression lines accumulated higher levels of pinoresinol diglucosides than wild-type plants, both before and after Pst DC3000 treatment, whereas double mutants accumulated lower levels. Furthermore, in vitro and in vivo experiments demonstrated that UGT73C3 and UGT73C4 can glycosylate pinoresinol to form pinoresinol monoglucoside and diglucoside. Moreover, pinoresinol glycosylation promotes the plant immune response by increasing reactive oxygen species production and callose deposition. Additionally, the transcription factor HB34 was found to activate UGT73C3 and UGT73C4 transcription and play a key role in plant immunity. Overall, this study reveals a novel pathway in which UGT73C3/C4-mediated pinoresinol glycosylation, regulated by HB34, enhances the plant immune response.</p>","PeriodicalId":52373,"journal":{"name":"Plant Communications","volume":" ","pages":"101261"},"PeriodicalIF":9.4,"publicationDate":"2025-01-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143043330","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":"Engineering the biosynthetic pathway of bacterial cellulose in rice to improve the performance of straw-derived paper.","authors":"Yong-Sheng Tian, Zhi-Hao Zuo, Yong-Dong Deng, Wen-Hui Zhang, Yu Wang, Hao Zhang, Bo Wang, Jian-Jie Gao, Zhen-Jun Li, Li-Juan Wang, Xiao-Yan Fu, Hong-Juan Han, Jing Xu, Ri-He Peng, Quan-Hong Yao","doi":"10.1016/j.xplc.2025.101259","DOIUrl":"10.1016/j.xplc.2025.101259","url":null,"abstract":"","PeriodicalId":52373,"journal":{"name":"Plant Communications","volume":" ","pages":"101259"},"PeriodicalIF":9.4,"publicationDate":"2025-01-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143043326","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":"MagnoliidsGDB: An integrated functional genomics database for magnoliids.","authors":"Yayu Chen, Zhuang Yang, Jiajie Chen, Ping Li, Xinglong Zhao, Sihui Huang, Zhumao Li, Sishu Huang, Jie Luo, Haiyan Hu, Yuanhao Ding","doi":"10.1016/j.xplc.2025.101263","DOIUrl":"10.1016/j.xplc.2025.101263","url":null,"abstract":"","PeriodicalId":52373,"journal":{"name":"Plant Communications","volume":" ","pages":"101263"},"PeriodicalIF":9.4,"publicationDate":"2025-01-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143043328","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":"Characterization of a 4'-O-rhamnosyltransferase and de novo biosynthesis of bioactive steroidal triglycosides from Paris polyphylla.","authors":"Chen-Xiao Zhao, Yuan-Feng Yan, Li-Xiao Zhao, Xue Tang, Yue-Gui Chen, Wen-Jun Song, Li-Ping Long, Jing Chen, Chun-Lin Tan, Qiao-Zhuo Zhang, Xiu-Lan Pu, Qin-Qin Shen, Yu-Zhou Fan, Yang Tao, Xiao Ye, Sheng-Hong Li, Yan Liu","doi":"10.1016/j.xplc.2025.101257","DOIUrl":"10.1016/j.xplc.2025.101257","url":null,"abstract":"<p><p>Steroidal saponins in Paris polyphylla featuring complicated sugar chains exhibit notable biological activities, but their sugar-chain biosynthesis is still not fully understood. Here, we identified a 4'-O-rhamnosyltransferase (UGT73DY2) from P. polyphylla, which catalyzes the 4'-O-rhamnosylation of polyphyllins V and VI, producing dioscin and pennogenin 3-O-β-chacotrioside, respectively. UGT73DY2 exhibits strict substrate specificity toward steroidal diglycosides and UDP-rhamnose, and a new steroidal triglycoside can be synthesized through enzyme catalysis. A mutation library was generated based on semi-rational design, identifying three mutants, I358T, A342V, and A132T, which displayed approximately two-fold enhanced enzyme activity. Molecular dynamics simulations revealed that shortened distances between the 4'-OH group of the sugar acceptor and either the crucial residue H20 or the donor UDP-Rha contribute to the enhanced enzyme activity. Moreover, subcellular localization analysis of UGT73DY2 and other biosynthetic enzymes indicated that dioscin biosynthesis predominantly occurs in the endoplasmic reticulum of plant cells. By co-expressing 14 biosynthetic genes in Nicotiana benthamiana, optimizing HMGR subcellular localization and cytochrome P450 gene sets, and engineering UGT73DY2, we successfully established a dioscin biosynthesis system with a yield of 3.12 ± 0.11 μg/g dry weight. This study not only clarifies the 4'-O-rhamnosylation process in steroidal saponin biosynthesis but also presents an alternative approach for the production of steroidal saponins in P. polyphylla through synthetic biology and metabolic engineering.</p>","PeriodicalId":52373,"journal":{"name":"Plant Communications","volume":" ","pages":"101257"},"PeriodicalIF":9.4,"publicationDate":"2025-01-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143025742","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":"Damage activates EXG1 and RLP44 to suppress vascular differentiation during regeneration in Arabidopsis.","authors":"Shamik Mazumdar, Frauke Augstein, Ai Zhang, Constance Musseau, Muhammad Shahzad Anjam, Peter Marhavy, Charles W Melnyk","doi":"10.1016/j.xplc.2025.101256","DOIUrl":"10.1016/j.xplc.2025.101256","url":null,"abstract":"<p><p>Plants possess remarkable regenerative abilities to form de novo vasculature after damage and in response to pathogens that invade and withdraw nutrients. To identify common factors that affect vascular formation upon stress, we searched for Arabidopsis thaliana genes differentially expressed upon Agrobacterium infection, nematode infection, and plant grafting. One such gene is cell wall-related and highly induced by all three stresses, which we named ENHANCED XYLEM AND GRAFTING1 (EXG1), since its mutations promote ectopic xylem formation in a vascular cell induction system and enhance graft formation. Further observations revealed that exg1 mutants show inhibited cambium development and callus formation but enhanced tissue attachment, syncytium size, phloem reconnection, and xylem formation. Given that brassinosteroids also promote xylem differentiation, we analyzed brassinosteroid-related genes and found that mutations in RLP44 encoding a receptor-like protein cause similar regeneration-related phenotypes as mutations in EXG1. Like EXG1, RLP44 expression is also induced by grafting and wounding. Mutations in EXG1 and RLP44 affect the expression of many genes in common, including those related to cell walls and genes important for vascular regeneration. Our results suggest that EXG1 integrates information from wounding or pathogen stress and functions with RLP44 to suppress vascular differentiation during regeneration and healing.</p>","PeriodicalId":52373,"journal":{"name":"Plant Communications","volume":" ","pages":"101256"},"PeriodicalIF":9.4,"publicationDate":"2025-01-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143016059","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}