Senlin Zeng, Juan Du, Yulong Yang, Tao LiuFu, Jiali Zhai, Yang Feng, Qinrong Hua, Lamei Zheng, Xu Li, Kunzhi Li, Sodmergen, Xudong Sun, Huini Xu
{"title":"S-nitrosylation of SlMYB86 within a SlGRF4-SlMYB86-SlGSNOR module enhances nitrate tolerance in tomato.","authors":"Senlin Zeng, Juan Du, Yulong Yang, Tao LiuFu, Jiali Zhai, Yang Feng, Qinrong Hua, Lamei Zheng, Xu Li, Kunzhi Li, Sodmergen, Xudong Sun, Huini Xu","doi":"10.1111/jipb.70408","DOIUrl":"https://doi.org/10.1111/jipb.70408","url":null,"abstract":"<p><p>Excessive application of nitrogen (N) fertilizers, particularly nitrate (NO<sub>3</sub> <sup>-</sup>), in protected agricultural systems has led to secondary soil salinization, posing a global threat to crop yield and quality. The regulatory network underlying tolerance to excess nitrate in tomato (Solanum lycopersicum) remains largely unexplored. Here, we report that S-nitrosoglutathione reductase (GSNOR) positively regulates nitrate tolerance by reducing nitric oxide (NO) and S‑nitrosothiol (SNO) accumulation. We then identified the transcription factor SlMYB86 as a direct upstream activator of SlGSNOR, and further found that nitrate‑induced NO triggers S‑nitrosylation of SlMYB86 at Cys68 and Cys263. This post‑translational modification enhances SlMYB86 protein stability by blocking 26S proteasome‑mediated degradation, while also increasing its DNA‑binding affinity and the transcriptional activation of SlGSNOR, thereby enhancing nitrate tolerance. Moreover, Growth-regulating factor 4 (SlGRF4) functions as an upstream regulator of this pathway, activating SlMYB86 expression under nitrate stress and thereby enhancing tomato tolerance to excessive nitrate stress. Collectively, these findings establish a SlGRF4-SlMYB86-SlGSNOR module in which SlMYB86 S‑nitrosylation establishes a negative feedback loop that couples NO signaling to NO clearance, maintaining redox homeostasis and promoting nitrate tolerance in tomato.</p>","PeriodicalId":195,"journal":{"name":"Journal of Integrative Plant Biology","volume":" ","pages":""},"PeriodicalIF":12.5,"publicationDate":"2026-09-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"149079073","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 cytokinin-NIN module drives spontaneous root nodule formation in alfalfa.","authors":"Yazhen Guo, Hongwei Guo, Shujing Cheng, Peiyong Xin, Ronghui Yu, Zhibin Fan, Jinfang Chu, Jian Feng","doi":"10.1111/jipb.70415","DOIUrl":"https://doi.org/10.1111/jipb.70415","url":null,"abstract":"<p><p>Alfalfa can form root nodules even in the absence of rhizobial bacteria in a process controlled by cytokinin and the regulator NIN, and initiated by the plant itself; these observations provide a foundation for engineering nodule-like organs in other crops.</p>","PeriodicalId":195,"journal":{"name":"Journal of Integrative Plant Biology","volume":" ","pages":""},"PeriodicalIF":12.5,"publicationDate":"2026-09-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"149072860","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":"Ancestral karyotype construction and chromosome fusion in Poaceae.","authors":"Yanli Wei, Guochao Wu, Xiaozhu Guo, Zifen Guo, Jianquan Liu, Minghui Kang, Wenli Chen","doi":"10.1111/jipb.70411","DOIUrl":"https://doi.org/10.1111/jipb.70411","url":null,"abstract":"<p><p>Reconstruction of the ancestral grass karyotype using two new chromosome-level genomes and 19 published assemblies shows that the ancestral Poaceae karyotype had 12 protochromosomes (x = 12), not 11, and that 48 chromosome fusions serve as reliable phylogenetic markers, clarifying grass chromosomal evolution.</p>","PeriodicalId":195,"journal":{"name":"Journal of Integrative Plant Biology","volume":" ","pages":""},"PeriodicalIF":12.5,"publicationDate":"2026-09-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"149072913","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}
Lei Chen, Jiemin Chen, Haiting Zhong, Zixiang Yang, Chao Fang, Fanjiang Kong, Baohui Liu, Sijia Lu
{"title":"Rewiring the SVP-AGL24 module into a flowering-promoting cascade via legume-specific E1 repressors in soybean.","authors":"Lei Chen, Jiemin Chen, Haiting Zhong, Zixiang Yang, Chao Fang, Fanjiang Kong, Baohui Liu, Sijia Lu","doi":"10.1111/jipb.70404","DOIUrl":"https://doi.org/10.1111/jipb.70404","url":null,"abstract":"<p><p>Photoperiodic flowering is a critical determinant of soybean regional adaptation and yield, and is predominantly governed by the legume-specific E1 repressor family. How evolutionarily conserved MADS-box transcription regulators such as AGAMOUS-LIKE 24 (AGL24) and SHORT VEGETATIVE PHASE (SVP) integrate into the E1 module remains unclear. Here, we show that soybean GmSVP1 and GmSVP2 promote flowering under long-day conditions. GmSVP1/2 directly bind to and repress the E1 family genes, and genetic analyses demonstrate that this repression accounts for the flowering-promoting activity of endogenous GmSVP1/2. Although GmSVP1/2 can also directly repress the florigen gene GmFT2a, their net endogenous function is to advance floral transition via the E1 pathway. We further identify GmAGL24 as an upstream regulator of GmSVP1/2. Collectively, these results establish a GmAGL24-GmSVP-E1-GmFT regulatory cascade that controls photoperiodic flowering in soybean. This work provides mechanistic insight into the functional diversification of conserved flowering regulators in legumes and identifies promising genetic targets for breeding broadly adapted soybean cultivars.</p>","PeriodicalId":195,"journal":{"name":"Journal of Integrative Plant Biology","volume":" ","pages":""},"PeriodicalIF":12.5,"publicationDate":"2026-09-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"149068718","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":"Grazing alters the response of ANPP to precipitation variability in a desert steppe.","authors":"Feng Zhang, Shaoyu Li, Jiahua Zheng, Bin Zhang, Jing Wang, Zhongwu Wang, Zhiguo Li, Guodong Han, Mengli Zhao","doi":"10.1111/jipb.70406","DOIUrl":"https://doi.org/10.1111/jipb.70406","url":null,"abstract":"<p><p>Precipitation is a pivotal driver of aboveground net primary productivity (ANPP) in grasslands, while grazing regulates ANPP by reshaping plant community structure. However, how grazing regulates grassland responses to precipitation variability remains incompletely understood. Here, we conducted an 18-year field grazing experiment in a desert steppe, combining long-term ANPP monitoring with daily precipitation data. Our results revealed that grazing significantly reduced community ANPP by 31% and forb ANPP by 61%. This reflected a shift from palatable forbs to stress-tolerant grasses, primarily driven by increased abundance of Stipa breviflora. June-July precipitation amount emerged as the primary driver of inter-annual ANPP variability. Critically, significant interactions between grazing and precipitation demonstrated that grazing fundamentally altered these precipitation-ANPP relationships, strengthening the response slope of grasses while weakening that of forbs and the whole community. Although grazing did not significantly alter legacy effects at the community or grass level, it significantly modulated the legacy effect on forb ANPP; previous-year precipitation remained a significant predictor of ANPP across all organizational levels. Grazing-induced phenotypic adjustments in S. breviflora (increased root length and population density) strengthened the coupling between grasses and early- and mid-summer precipitation, even though their precipitation-use efficiency did not differ between treatments. Our findings demonstrate that grazing reorganizes ecosystem sensitivity to climate by shifting plant functional group dominance and key species traits. These findings provide a mechanistic basis for forecasting grassland responses to climate variability and for guiding grazing management under seasonal precipitation forecasts.</p>","PeriodicalId":195,"journal":{"name":"Journal of Integrative Plant Biology","volume":" ","pages":""},"PeriodicalIF":12.5,"publicationDate":"2026-09-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"149035818","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":"RNA regulatory landscapes in fleshy fruits: From regulation mechanisms to quality design.","authors":"Renkun Tang, Meng Zhang, Kuo Chen, Guozheng Qin, Liqun Ma, Hongliang Zhu","doi":"10.1111/jipb.70403","DOIUrl":"https://doi.org/10.1111/jipb.70403","url":null,"abstract":"<p><p>Fruit quality is a complex trait shaped by developmental programs, metabolic networks, and environmental responses; yet, the RNA-level regulatory processes that determine functional outputs remain insufficiently integrated and underexplored. In this review, we provide an integrated overview of RNA-mediated regulatory mechanisms underlying fleshy fruit quality formation, focusing on five major layers, including RNA modification, organellar RNA editing, alternative splicing, long non-coding RNAs, microRNAs, and their crosstalk. We summarize their molecular modes of action and discuss how these regulatory mechanisms shape diverse quality traits, including fruit morphology, pigmentation, flavor, texture remodeling, ripening progression, and postharvest performance. Furthermore, we highlight emerging strategies for harnessing RNA-mediated regulation to improve and maintain fruit quality, including RNA-centered multi-omics integration, AI-driven design of RNA regulatory elements, and precision of RNA-level manipulation. We propose that deciphering and manipulating post-transcriptional regulatory codes will provide a conceptual and technological framework for shifting fruit improvement from empirical selection toward rational RNA-guided quality design, with broad implications for crop improvement, nutritional enhancement, and sustainable postharvest management.</p>","PeriodicalId":195,"journal":{"name":"Journal of Integrative Plant Biology","volume":" ","pages":""},"PeriodicalIF":12.5,"publicationDate":"2026-09-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"149035834","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":"Pan-genomic analysis of alternative polyadenylation reveals a 3'UTR remodeling regulatory layer controlling salt tolerance in rice.","authors":"Chuanlin Shi, Wenli Zou, Yan Cui, Zhangqiang Wang, Longbo Yang, Zhikun Wu, Xianmeng Wang, Yiwang Zhu, Dandan Chen, Haohua He, Huiying He, Hua Wei, Lianguang Shang, Qian Qian","doi":"10.1111/jipb.70399","DOIUrl":"https://doi.org/10.1111/jipb.70399","url":null,"abstract":"<p><p>Alternative polyadenylation (APA) generates mRNA isoforms with variable 3'UTR lengths, yet its genetic basis and functional significance at the population level remain unexplored in plants. Here, we present the population-level APA landscape and the APA quantitative trait loci (3'aQTL) map in rice, through profiling of over 200 rice accessions under normal and salt-stress conditions. We identified 19,938 and 22,251 APA events under normal and salt-stress conditions, respectively, and demonstrate that salt stress globally induces 3'UTR shortening via proximal polyA site selection, which can release miRNA-mediated repression on stress-response genes. We further mapped 1,634 and 1,809 cis-3'aQTLs under normal and salt-stress conditions, respectively, which were markedly enriched in 3'UTRs and transcription termination sites, in contrast to expression QTLs that were enriched in promoter regions. This APA genetic framework reveals a post-transcriptional regulatory layer distinct from transcriptional control. Functional validation of two 3'aQTL-associated genes, OsMyb21 and OsRNS3, through CRISPR knockout and 3'UTR deletion confirmed their roles in salt tolerance via APA-mediated regulation. Our findings provide a community resource for understanding post-transcriptional regulation of stress responses and offer genetic targets for breeding salt-tolerant rice varieties.</p>","PeriodicalId":195,"journal":{"name":"Journal of Integrative Plant Biology","volume":" ","pages":""},"PeriodicalIF":12.5,"publicationDate":"2026-09-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"149014997","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":"Ethylene receptors at the ER: Potential hubs integrating hormone, redox, and Ca<sup>2+</sup> signaling.","authors":"Qianshen Zhang, Yiping Wang, Ruiqi Wang, Jiale Zhang, Savithramma P Dinesh-Kumar, Xiaofeng Wang, Yongliang Zhang","doi":"10.1111/jipb.70398","DOIUrl":"https://doi.org/10.1111/jipb.70398","url":null,"abstract":"<p><p>Arabidopsis thaliana Ethylene Response 1 (ETR1) has long been viewed as a canonical hormone receptor initiating ethylene signaling at the endoplasmic reticulum (ER). Recent studies demonstrate that ETR1 also acts as an ER redox sensor, with disulfide-dependent dimerization controlling receptor conformation and activity. In parallel, subfamily I ethylene receptors, including ETR1, function as Ca<sup>2+</sup>-permeable channels, directly linking ethylene perception to rapid cytosolic Ca<sup>2+</sup> elevation. Here, we summarize emerging evidence that redefines ETR1 as a multifunctional signaling hub connecting ethylene perception, redox regulation, and Ca<sup>2+</sup> signaling. We present this integration as a working model and highlight unresolved questions concerning the mechanistic relationships among these functions. This framework provides a new perspective on how plants integrate ER homeostasis with hormone signaling to coordinate development and stress adaptation.</p>","PeriodicalId":195,"journal":{"name":"Journal of Integrative Plant Biology","volume":" ","pages":""},"PeriodicalIF":12.5,"publicationDate":"2026-09-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"149011736","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}