Plant Cell最新文献_第5页

Does a root clock set the rhythm of lateral root formation? 根钟能调节侧根形成的节奏吗？

IF 13.5 1区生物学

Plant Cell Pub Date : 2026-09-01 DOI: 10.1093/plcell/koag253

Luciano M Di Fino

引用次数: 0

A cryptic START domain regulates deeply conserved transcription factors. 一个神秘的START结构域调节深度保守的转录因子。

IF 13.5 1区生物学

Plant Cell Pub Date : 2026-09-01 DOI: 10.1093/plcell/koag267

Courtney E Dresden, Ekaterina P Andrianova, Brian J Smith, Nicole I Callery, Dominic Kolonay, Ashton S Holub, Ricardo A Urquidi Camacho, Sarah G Choudury, Isabella J Higgins, Igor B Zhulin, Aman Y Husbands

{"title":"A cryptic START domain regulates deeply conserved transcription factors.","authors":"Courtney E Dresden, Ekaterina P Andrianova, Brian J Smith, Nicole I Callery, Dominic Kolonay, Ashton S Holub, Ricardo A Urquidi Camacho, Sarah G Choudury, Isabella J Higgins, Igor B Zhulin, Aman Y Husbands","doi":"10.1093/plcell/koag267","DOIUrl":"10.1093/plcell/koag267","url":null,"abstract":"Transcription factors (TFs) integrate a diverse array of inputs to achieve the exquisite control of gene expression necessary for life. In plants, this is exemplified by the deeply conserved CLASS III HOMEODOMAIN LEUCINE ZIPPER (HD-Zip III) family of TFs. HD-Zip III activity is controlled by inputs at transcriptional, post-transcriptional, and post-translational levels. As part of their multidomain architecture, HD-Zip III TFs contain a StAR-related lipid transfer (START) domain, a ubiquitously distributed evolutionary module that binds various types of lipophilic ligands. Here, we show that HD-Zip III and HD-Zip IV proteins contain an additional cryptic, deeply conserved START domain which we term the disorder-containing START domain (dSTART). The dSTART domain is required for HD-Zip III developmental function, promoting homodimerization and controlling subcellular localization and DNA-binding competence. The dSTART domain also helps discriminate responsive from nonresponsive binding sites across the HD-Zip III shared genetic network. Finally, we identify candidate ligands of the dSTART domain including several species of phosphatidylglycerol. The identification and functional characterization of a cryptic START domain provides new mechanistic insights into a deeply conserved family of TFs with roles in nearly all aspects of plant development.","PeriodicalId":20186,"journal":{"name":"Plant Cell","volume":" ","pages":""},"PeriodicalIF":13.5,"publicationDate":"2026-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC13590234/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148901039","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}

引用次数: 0

Reconstruction and correction of the rice mitochondrial reference genome. 水稻线粒体参考基因组的重建与校正。

IF 13.5 1区生物学

Plant Cell Pub Date : 2026-09-01 DOI: 10.1093/plcell/koag283

Shuo Zhang, Jie Wang, Xiaolin Gu, Yi Zou, Zhiqiang Wu

引用次数: 0

Correction to: More than a defense: salicylic acid's secret role in fruit color. 更正：不仅仅是辩护：水杨酸在水果颜色中的秘密作用。

IF 13.5 1区生物学

Plant Cell Pub Date : 2026-09-01 DOI: 10.1093/plcell/koag244

引用次数: 0

The spliceosome's secret life: pRP8 silences transposons through 3D chromatin organization. 剪接体的秘密生命：PRP8通过三维染色质组织沉默转座子。

IF 13.5 1区生物学

Plant Cell Pub Date : 2026-08-04 DOI: 10.1093/plcell/koag231

Satoyo Oya

引用次数: 0

CERK1-mediated phosphorylation of nitrilases activates auxin biosynthesis and promotes resistance to Botrytis cinerea. cerk1介导的硝化酶磷酸化激活生长素生物合成并促进对灰葡萄孢的抗性。

IF 13.5 1区生物学

Plant Cell Pub Date : 2026-08-04 DOI: 10.1093/plcell/koag233

Jiarui Zheng, Sufen Chen, Yawen Wang, Zelin Zhang, Shaokun Wang, Caizhen Zhang, Yan Chen, Huiren Cai, Sujuan Duan, Chen Liu, Jian-Feng Li, Liang Kong, Fausto Andres Ortiz-Morea, Bing Liu, Jun Liu

{"title":"CERK1-mediated phosphorylation of nitrilases activates auxin biosynthesis and promotes resistance to Botrytis cinerea.","authors":"Jiarui Zheng, Sufen Chen, Yawen Wang, Zelin Zhang, Shaokun Wang, Caizhen Zhang, Yan Chen, Huiren Cai, Sujuan Duan, Chen Liu, Jian-Feng Li, Liang Kong, Fausto Andres Ortiz-Morea, Bing Liu, Jun Liu","doi":"10.1093/plcell/koag233","DOIUrl":"10.1093/plcell/koag233","url":null,"abstract":"Plant immunity relies on dynamic modulation of phytohormone signaling to balance growth and defense, with auxin contributing to resistance against the necrotrophic pathogen Botrytis cinerea (B. cinerea). However, how plants rapidly and precisely regulate auxin biosynthesis during pathogen infection remains unclear. Here, we identified the nitrilases NIT1, NIT2, and NIT3, as key components of auxin biosynthesis during infection. Upon chitin perception, CERK1 associates with and phosphorylates nitrilases to stimulate the conversion of indole-3-acetonitrile (IAN) into indole-3-acetic acid (IAA), thereby activating auxin signaling and promoting resistance to B. cinerea. CRISPR/Cas9-generated nit1, nit2, and nit3 triple mutants (ntm) exhibit increased susceptibility to B. cinerea, whereas reintroduction of individual nitrilases restores resistance. IAN, similar to IAA, enhances resistance to B. cinerea in WT plants in a nitrilase-dependent manner. Furthermore, CERK1 phosphorylates NIT2 at a conserved threonine residue (T149), thereby enhancing nitrilase activity and stimulating IAA biosynthesis and auxin signaling during infection. Notably, nitrilase-dependent defense is likely conserved, as RNAi-silencing of the tomato nitrilase SlNIT impairs IAN-mediated resistance to B. cinerea. Collectively, our findings demonstrate that CERK1-mediated chitin signaling activates nitrilase-dependent IAA biosynthesis, directly linking pathogen perception to auxin-regulated defense.","PeriodicalId":20186,"journal":{"name":"Plant Cell","volume":" ","pages":""},"PeriodicalIF":13.5,"publicationDate":"2026-08-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148796981","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}

引用次数: 0

A guardian angel: how immune factor RPS2 is activated by pathogen effector AvrRpt2. 守护天使：免疫因子RPS2如何被病原体效应物AvrRpt2激活。

IF 13.5 1区生物学

Plant Cell Pub Date : 2026-08-04 DOI: 10.1093/plcell/koag226

Annabelle Campbell

引用次数: 0

They look like gold: CITF1 and FIT interaction mediate cross-talk between iron and copper. 它们看起来像黄金：CITF1和FIT相互作用介导铁和铜之间的串扰。

IF 13.5 1区生物学

Plant Cell Pub Date : 2026-08-04 DOI: 10.1093/plcell/koag229

Sébastien Thomine

引用次数: 0

The sentry and the architect: functional specialization of two jasmonate-synthesizing enzymes in rice. 哨兵与建筑师：水稻中两种茉莉合成酶的功能专门化。

IF 13.5 1区生物学

Plant Cell Pub Date : 2026-08-04 DOI: 10.1093/plcell/koag238

Ved Prakash

引用次数: 0

The HORMA-domain protein ASY1 recruits the plant-specific cyclin SDS to promote DMC1-mediated meiotic recombination. horma结构域蛋白ASY1募集植物特异性细胞周期蛋白SDS，促进dmc1介导的减数分裂重组。

IF 13.5 1区生物学

Plant Cell Pub Date : 2026-08-04 DOI: 10.1093/plcell/koag176

Bowei Cai, Xinjie Yuan, Fei Cao, Yanru Luo, Yashi Zhang, Jixin Zhuang, Miaowei Geng, Lei Chu, Arp Schnittger, Chao Yang

{"title":"The HORMA-domain protein ASY1 recruits the plant-specific cyclin SDS to promote DMC1-mediated meiotic recombination.","authors":"Bowei Cai, Xinjie Yuan, Fei Cao, Yanru Luo, Yashi Zhang, Jixin Zhuang, Miaowei Geng, Lei Chu, Arp Schnittger, Chao Yang","doi":"10.1093/plcell/koag176","DOIUrl":"10.1093/plcell/koag176","url":null,"abstract":"The chromosome axis is a proteinaceous scaffold essential for crossover formation in meiosis. While the axis-associated HORMA-domain protein ASY1 is known to be necessary for the localization of the recombinase DMC1 to the axis, the molecular mechanism linking ASY1 to DMC1 loading remains unclear. Here, we demonstrate that ASY1 directly recruits the plant-specific cyclin SOLO DANCERS (SDS) to chromosomes, which ensures efficient DMC1 localization and interhomolog recombination. Live-cell imaging and immunodetection revealed that SDS localizes to chromosomes from leptotene to zygotene and disappears after pachytene resembling DMC1 dynamics. Biochemical assays demonstrated a direct interaction between ASY1 and SDS. Further analyses revealed that ASY1's closure motif, a conformational regulatory element, is required for SDS recruitment despite being dispensable for ASY1's own chromosome association. Moreover, unlike in sds mutants, depletion of the DMC1 inhibitor FIGL1-FLIP complex failed to restore DMC1 foci in asy1 mutants, positioning ASY1 upstream of both positive (SDS) and negative (FIGL1-FLIP) regulators of DMC1. These findings establish ASY1 as a key coordinator of interhomolog recombination, bridging chromosome axis architecture with recombinase dynamics to control crossover formation and genome stability.","PeriodicalId":20186,"journal":{"name":"Plant Cell","volume":" ","pages":""},"PeriodicalIF":13.5,"publicationDate":"2026-08-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC13440570/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148227327","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}

引用次数: 0