{"title":"Unraveling the central puzzle in salicylic acid biosynthesis from phenylalanine.","authors":"Yan Li, Jie Luo","doi":"10.1111/jipb.70016","DOIUrl":"https://doi.org/10.1111/jipb.70016","url":null,"abstract":"","PeriodicalId":195,"journal":{"name":"Journal of Integrative Plant Biology","volume":" ","pages":""},"PeriodicalIF":9.3,"publicationDate":"2025-08-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144797752","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":"Maintaining basal B-RAF kinase activity for abscisic acid signaling via reciprocal phosphoregulation of a single serine residue.","authors":"Chen Zhu, Tian Sang, Zhen Zhang, Yubei Wang, Zhen Lin, Wei Wang, Zhaobo Lang, Jian-Kang Zhu, Pengcheng Wang","doi":"10.1111/jipb.70012","DOIUrl":"https://doi.org/10.1111/jipb.70012","url":null,"abstract":"<p><p>The phytohormone abscisic acid (ABA) regulates plant responses to environmental stresses, development, and immunity. Under unfavorable conditions, ABA forms a complex with its receptor proteins Pyrabactin Resistance 1 (PYR1)/PYR1-likes (PYLs)/Regulatory Component of ABA Receptors (RCARs), inhibiting Clade A Protein Phosphatases Type 2C (PP2Cs) and releasing Sucrose Non-Fermenting-1-Related Protein Kinase 2s (SnRK2s) from PP2C-mediated inhibition. Rapidly Accelerated Fibrosarcoma (RAF) kinases from the B1, B2, and B3 subgroups phosphorylate and reactivate SnRK2s, initiating ABA responses. While ABA does not significantly activate B-RAFs, their basal activity is essential for initiating ABA signaling. However, the mechanisms sustaining this basal B-RAF activity are not fully understood. In this study, we revealed that Clade A PP2Cs interact with and dephosphorylate a certain number of B3 subgroup RAFs at a conserved serine residue, corresponding to Ser619 in RAF3, within the phosphate-binding loop. A phosphomimicking mutation at this residue, RAF3<sup>S619D</sup>, failed to bind ATP and exhibited diminished kinase activity in vitro and in vivo. Ser619 in RAF3 is an autophosphorylation site, phosphorylated by recombinant RAF3-KD but not by its substrate SnRK2.6. The RAF3<sup>S619A</sup> mutant, abolishing Ser619 autophosphorylation, displayed increased kinase activity in vitro. The B-RAF high-order mutant OK<sup>100</sup>-B3 carrying RAF3<sup>S619A</sup> showed enhanced ABA sensitivity compared with those with wild-type RAF3. Thus, PP2C-mediated dephosphorylation and the autophosphorylation of this unique serine residue dynamically regulate ATP binding affinity and tightly control RAF3 activity during various ABA signaling phases. This intricate mechanism ensures rapid RAF-SnRK2 cascade activation during stress while promptly desensitizing RAFs once stress signaling commences.</p>","PeriodicalId":195,"journal":{"name":"Journal of Integrative Plant Biology","volume":" ","pages":""},"PeriodicalIF":9.3,"publicationDate":"2025-08-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144797750","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 spatial distributional pattern of seed plants and its future advances","authors":"Jun Wen","doi":"10.1111/jipb.70013","DOIUrl":"10.1111/jipb.70013","url":null,"abstract":"<p> </p>","PeriodicalId":195,"journal":{"name":"Journal of Integrative Plant Biology","volume":"67 10","pages":"2529-2531"},"PeriodicalIF":9.3,"publicationDate":"2025-08-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1111/jipb.70013","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144797751","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":"Breeding 5.0: Artificial intelligence (AI)-decoded germplasm for accelerated crop innovation.","authors":"Jiayi Fu, Shouzhi Zheng, Longjiang Fan, Xiaoming Zheng, Qian Qian","doi":"10.1111/jipb.70008","DOIUrl":"https://doi.org/10.1111/jipb.70008","url":null,"abstract":"<p><p>Crop breeding technologies are vital for global food security. While traditional methods have improved yield, stress tolerance, and nutrition, rising challenges such as climate instability, land loss, and pest pressure now demand new solutions. This study introduces the Breeding 5.0 framework, driven by artificial intelligence (AI) and robotics, marking a shift from empirical selection to intelligent systems. Central to this transformation is AI's emerging ability to deeply \"understand germplasm,\" not merely by identifying genetic markers but also by decoding its architecture, plasticity, regulatory logic, and environmental interactions. This germplasm intelligence enables predictive trait modeling, optimized parental design, and targeted selection. We define four technical paradigms enabling this shift: (i) Multimodal data integration to bridge genotype and phenotype; (ii) Omni-simulated environments for virtual performance testing; (iii) Peopleless data capture for scalable precision; and (iv) Expert, explainable AI for biologically grounded decisions. Together, these technologies algorithmically convert germplasm into actionable breeding insights, accelerating the full cycle from ideal plant type design to elite line development. We further propose the \"breeding flywheel,\" a self-reinforcing system that continuously amplifies phenotypic gains and refines breeding strategies, thereby enabling faster and smarter crop improvement to ensure a sustainable food future.</p>","PeriodicalId":195,"journal":{"name":"Journal of Integrative Plant Biology","volume":" ","pages":""},"PeriodicalIF":9.3,"publicationDate":"2025-08-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144787919","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}
Yibo Zhang, Dian Jiao, Chenjia Shen, Junhui Zhou, Juan Guo, Jian Yang, Shuang Liu, Ping Su
{"title":"Plant prenyltransferases: Diversity, catalytic activities, mechanisms, and application in heterologous production of prenylated natural products.","authors":"Yibo Zhang, Dian Jiao, Chenjia Shen, Junhui Zhou, Juan Guo, Jian Yang, Shuang Liu, Ping Su","doi":"10.1111/jipb.70004","DOIUrl":"https://doi.org/10.1111/jipb.70004","url":null,"abstract":"<p><p>Plant prenyltransferases (PTs) are pivotal enzymes in the biosynthetic pathways of prenylated natural products (PNPs) that catalyze the transfer of isoprenyl units (C<sub>5</sub>) to specific receptor molecules, including aromatic compounds and terpene precursors. Recent advancements in plant genomics and synthetic biology have significantly accelerated research on PTs in natural product synthesis, positioning them as a focal point for scientific investigation. Although there are existing reviews on the functions and classification of PTs, the functional diversity of plant PTs remains inadequately understood. Consequently, this study provides an exhaustive summary of over 160 reported plant ubiquinone biosynthesis gene A (UbiA)-type PTs and selected representative isopentenyl diphosphate synthases (IDSs). We systematically reviewed the classification, function, catalytic mechanisms, and enzyme engineering strategies of plant PTs, and their application in the heterologous production of PNPs. This study aimed to advance PT characterization and application, thereby establishing a foundation for PNP-based drug development.</p>","PeriodicalId":195,"journal":{"name":"Journal of Integrative Plant Biology","volume":" ","pages":""},"PeriodicalIF":9.3,"publicationDate":"2025-08-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144787920","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":"Cover Image:","authors":"","doi":"10.1111/jipb.13699","DOIUrl":"https://doi.org/10.1111/jipb.13699","url":null,"abstract":"<p>The Trojan Horse was a giant wooden statue constructed by the Greeks during the Trojan War to conceal elite soldiers inside. By pretending to retreat and offering the statue to the city of Troy, the Greeks ultimately achieved a decisive victory. Chen et al. (pages 2118–2134) demonstrated that the rice phytocytokine IMMUNE RESPONSE PEPTIDE 1 (IRP1) and its derived peptides resemble hidden soldiers, hiding in ambush inside pest frass (the “Trojan Horse”) during pest feeding, and finally activating rice plant defenses. This work provides a unique example of how a plant senses the presence of herbivores by perceiving its own phytocytokines in herbivore frass and then launching its defenses.</p>","PeriodicalId":195,"journal":{"name":"Journal of Integrative Plant Biology","volume":"67 8","pages":""},"PeriodicalIF":9.3,"publicationDate":"2025-08-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1111/jipb.13699","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144751594","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}
Yanhuang An, Xiaoting Ma, Tengxiao Luo, Liang Chen, Jiahao Luo, Meifei Su, Suiwen Hou
{"title":"OsSCR coordinates with OsSPL10 and OsWOX3B to promote epidermal hair development in rice","authors":"Yanhuang An, Xiaoting Ma, Tengxiao Luo, Liang Chen, Jiahao Luo, Meifei Su, Suiwen Hou","doi":"10.1111/jipb.70005","DOIUrl":"10.1111/jipb.70005","url":null,"abstract":"<div>\u0000 \u0000 <p>Epidermal hairs are specialized structures on the epidermis of plants that function in crop defense against biotic and abiotic stresses, particularly in warding off herbivores and pests. However, the regulatory mechanism governing epidermal hair formation in rice remains unclear. Here, we report that OsSCR1 (SCARECROW1) and OsSCR2 redundantly promote development of three types of rice trichomes (macro hairs, micro hairs, and glandular hairs), as shown through the reduced and increased trichomes in their knockout and overexpression lines. We demonstrate that <i>OsSCR1</i> acts upstream of <i>OsWOX3B</i> (<i>WUSCHEL-RELATED HOMEOBOX 3B</i>) in that overexpression of <i>OsWOX3B</i> could rescue the macro hair development defects in <i>osscr1 osscr2</i> double mutants, and that OsSCR1 protein activates <i>OsWOX3B</i> expression using luciferase activity and chromatin immunoprecipitation quantitative PCR (ChIP-qPCR) assays. In addition, <i>OsSPL10</i> (<i>SQUAMOSA PROMOTER BINDING PROTEIN-LIKE10</i>) acts upstream of <i>OsSCR1</i> and enhances its expression to promote the development of macro and micro hairs. Additionally, increasing leaf trichome density through overexpressing <i>OsSCR2</i> could enhance seedling resistance to locust feeding. Collectively, our findings indicate that OsSPL10 facilitates the process of OsSCR1 inducing <i>OsWOX3B</i> activity to promote the formation of macro and micro hairs in rice.</p></div>","PeriodicalId":195,"journal":{"name":"Journal of Integrative Plant Biology","volume":"67 10","pages":"2578-2593"},"PeriodicalIF":9.3,"publicationDate":"2025-08-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144758813","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":"Issue information page","authors":"","doi":"10.1111/jipb.13698","DOIUrl":"https://doi.org/10.1111/jipb.13698","url":null,"abstract":"","PeriodicalId":195,"journal":{"name":"Journal of Integrative Plant Biology","volume":"67 8","pages":"1983-1984"},"PeriodicalIF":9.3,"publicationDate":"2025-08-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1111/jipb.13698","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144751595","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":"The OsPLATZ1–OsGRF4–DEP1 regulatory pathway promotes grain length in rice","authors":"Shuifu Chen, Can Xu, Yongzhi Tan, Shijuan Zhang, Yuqun Huang, Qiaoyu Yang, Zixu Zhang, Fuquan Li, Linlin Wang, Zhuohua Li, Ya Zhang, Qian Wang, Letian Chen, Yuanling Chen, Yao-Guang Liu, Xianrong Xie","doi":"10.1111/jipb.70009","DOIUrl":"10.1111/jipb.70009","url":null,"abstract":"<div>\u0000 \u0000 <p>Grain size is an important agronomic trait that largely determines grain yield in rice (<i>Oryza sativa</i> L.). The genes encoding the Growth Regulating Factors (GRFs) and G-proteins are major regulators for grain length regulation, but how these pathways are coordinated in plants remains elusive. Here, we described OsPLATZ1 as a transcriptional activator, a member of the Plant AT-rich sequence- and Zinc-binding family proteins in rice that positively regulates grain length. OsPLATZ1 interacted with multiple GRFs, and the OsPLATZ1-OsGRF4 complex bound to regulatory regions in the promoter of the G-protein gene <i>DENSE AND ERECT PANICLE1</i> (<i>DEP1</i>) to enhance its expression, thereby regulating grain length. We used gene editing to modify the <i>OsPLATZ1</i> promoter regulatory region and obtained mutant lines with downregulated or upregulated <i>OsPLATZ1</i> expression depending on the type of editing event. One of these mutant lines had changes in multiple agronomic traits and improved grain yield and grain appearance quality. Our findings reveal a new regulatory module in which OsPLATZ1 connects the GRFs and G-protein signaling pathways to regulate grain length and suggest that finely modulating OsPLATZ1 activity might be a promising molecular breeding approach.</p></div>","PeriodicalId":195,"journal":{"name":"Journal of Integrative Plant Biology","volume":"67 10","pages":"2594-2608"},"PeriodicalIF":9.3,"publicationDate":"2025-08-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144758814","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}
Dan-Dan Liu, Ming-Hui Xu, Lei Zhao, Miao-Yi Li, Zhao-Yang Li, Yuepeng Han, Jian-Ping An
{"title":"The MdSINA1-MdWOX8-MdHY5 module links strigolactone and gibberellin signals via interaction with MdSMXL8 and MdRGL3a in the regulation of anthocyanin biosynthesis in apple.","authors":"Dan-Dan Liu, Ming-Hui Xu, Lei Zhao, Miao-Yi Li, Zhao-Yang Li, Yuepeng Han, Jian-Ping An","doi":"10.1111/jipb.70001","DOIUrl":"https://doi.org/10.1111/jipb.70001","url":null,"abstract":"<p><p>The strigolactone (SL) and gibberellin (GA) signals jointly regulate various aspects of plant growth and development. However, the molecular regulatory network underlying the crosstalk between the SL and GA signaling pathways remains poorly understood. In this study, we found that ELONGATED HYPOCOTYL 5 (MdHY5) serves as an integrator of SL and GA signals in apple (Malus × domestica), and the WUSCHEL-related homeobox (WOX) transcription factor MdWOX8 enhances anthocyanin biosynthesis by directly activating MdHY5 expression. Furthermore, the MdWOX8-MdHY5 module is a crucial hub linking SL and GA signals by interacting with the SL signaling repressor SUPPRESSOR OF MORE AXILLARY GROWTH 2-LIKE 8 (MdSMXL8) and the GA signaling repressor REPRESSOR-of-ga1-3-LIKE 3a (MdRGL3a). MdSMXL8 inhibits the activation of the MdHY5 promoter by MdWOX8, and MdRGL3a promotes the function of MdWOX8 by enhancing its transcriptional activation of MdHY5 and disrupting the MdSMXL8-MdWOX8 interaction. Moreover, the E3 ubiquitin ligase SEVEN IN ABSENTIA 1 (MdSINA1) negatively regulates MdWOX8 homeostasis by targeting it for ubiquitination and degradation in response to SL and GA signals. Overall, our results reveal a precise regulatory network that integrates SL and GA at the transcriptional and post-translational levels, with the MdWOX8-MdHY5 module at its core.</p>","PeriodicalId":195,"journal":{"name":"Journal of Integrative Plant Biology","volume":" ","pages":""},"PeriodicalIF":9.3,"publicationDate":"2025-07-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144726252","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}