IF 11.6 1区生物学

Plant Cell Pub Date : 2025-09-09 DOI: 10.1093/plcell/koaf204

Laura Arribas-Hernández

引用次数: 0

Two AP2/ERF transcription factors coregulate OsHAK1 to modulate potassium and cesium uptake in rice. 两个AP2/ERF转录因子共同调控OsHAK1调控水稻钾和铯的吸收。

IF 11.6 1区生物学

Plant Cell Pub Date : 2025-09-09 DOI: 10.1093/plcell/koaf205

Mengqi Li, Weihong Li, Yang Zeng, Xiangbin Lu, Xuesong Li, Hongye Qu, Mian Gu, Huimin Feng, Xin-Yuan Huang, Ling Yu, Guohua Xu

{"title":"Two AP2/ERF transcription factors coregulate OsHAK1 to modulate potassium and cesium uptake in rice.","authors":"Mengqi Li, Weihong Li, Yang Zeng, Xiangbin Lu, Xuesong Li, Hongye Qu, Mian Gu, Huimin Feng, Xin-Yuan Huang, Ling Yu, Guohua Xu","doi":"10.1093/plcell/koaf205","DOIUrl":"10.1093/plcell/koaf205","url":null,"abstract":"The Group-I alkali metals potassium (K) and cesium (Cs) serve as an essential nutrient and a harmful element, respectively. In rice (Oryza sativa), the high-affinity K+ (HAK) transporter OsHAK1 contributes to K+ and Cs+ acquisition; however, its regulatory mechanism remains unclear. Here, we report 2 OsHAK1 regulators belonging to the APETALA2/ethylene responsive factor family, designated POTASSIUM TRANSPORTER REGULATOR 1/2 (KTR1/2). Low K+ suppresses KTR1 but induces KTR2 expression. KTR1 inhibits and KTR2 enhances OsHAK1 expression. KTR1-knockout increases and KTR2-knockout decreases K+ and Cs+ uptake. Notably, KTR2 activates KTR1 expression, and the single mutation of KTR2 has a similar effect as the double mutation of KTR1 and KTR2 in impairing rice growth and grain yield. Furthermore, OsHAK1 inactivation in ktr1 mutants or KTR2-overexpression lines reduces Cs+ content to a similar level as in the oshak1 mutant. Enhancing KTR2 expression driven by its native promoter increases grain yield and K+ uptake. Variation in K+ content in grain is associated with differences of K+ content in soils where rice accessions show a distinct combination of KTR1, KTR2, and OsHAK1 haplotypes. These results demonstrate that KTR1 and KTR2 play critical roles in the K+-mediated regulation of OsHAK1 expression, thus controlling K+ and Cs+ uptake and allowing rice to adapt to varying K+ supplies.","PeriodicalId":20186,"journal":{"name":"Plant Cell","volume":" ","pages":""},"PeriodicalIF":11.6,"publicationDate":"2025-09-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144874692","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

Aeschynomene's shortcut: A receptor-like cytoplasmic kinase drives nod-independent nodule formation. Aeschynomene的捷径：一种受体样细胞质激酶驱动不依赖淋巴结的结节形成。

IF 11.6 1区生物学

Plant Cell Pub Date : 2025-09-09 DOI: 10.1093/plcell/koaf202

Min-Yao Jhu, Chai Hao Chiu

引用次数: 0

A chromosome-level Mitragyna parvifolia genome unveils spirooxindole alkaloid diversification and mitraphylline biosynthesis. 染色体水平上的细叶密天螺基因组揭示了螺霉吲哚生物碱的多样化和密天螺碱的生物合成。

IF 11.6 1区生物学

Plant Cell Pub Date : 2025-09-09 DOI: 10.1093/plcell/koaf207

Larissa C Laforest, Tuan-Anh M Nguyen, Gabriel Oliveira Matsumoto, Pavithra Ramachandria, Andre Chanderbali, Siva Rama Raju Kanumuri, Abhisheak Sharma, Christopher R McCurdy, Thu-Thuy T Dang, Satya Swathi Nadakuduti

{"title":"A chromosome-level Mitragyna parvifolia genome unveils spirooxindole alkaloid diversification and mitraphylline biosynthesis.","authors":"Larissa C Laforest, Tuan-Anh M Nguyen, Gabriel Oliveira Matsumoto, Pavithra Ramachandria, Andre Chanderbali, Siva Rama Raju Kanumuri, Abhisheak Sharma, Christopher R McCurdy, Thu-Thuy T Dang, Satya Swathi Nadakuduti","doi":"10.1093/plcell/koaf207","DOIUrl":"10.1093/plcell/koaf207","url":null,"abstract":"Monoterpene indole alkaloids (MIAs) found in the Rubiaceae have varied pharmaceutical uses. Spirooxindole alkaloids are a structural subtype of MIAs with a unique spiro[pyrrolidine-3,3'-oxindole] ring system. Despite their intriguing structures and potent bioactivities, the evolution and diversification of spirooxindole alkaloids remain poorly understood. We report a high-quality chromosome-scale genome assembly of Mitragyna parvifolia, a tree species of the Rubiaceae family that predominantly produces the spirooxindole alkaloid mitraphylline. Comparative genomics, including comprehensive synteny and phylogeny analyses across the MIA-producing order Gentianales revealed a whole-genome duplication event underlying the divergence of the Cinchonoideae alliance from the Coffeeae alliance, leading to diversification of MIA biosynthesis. Transcriptome analyses of young and mature leaves, stems, stipules, and roots integrated with MIA profiling and genome analyses revealed several candidates in the MIA biosynthetic pathway. Functional characterization of selected candidates led to the elucidation of the biosynthesis of the antiproliferative spirooxindole mitraphylline in M. parvifolia. These genomic and transcriptomic resources are invaluable to identify the evolutionary origins and diversification of MIAs and spirooxindole alkaloids.","PeriodicalId":20186,"journal":{"name":"Plant Cell","volume":" ","pages":""},"PeriodicalIF":11.6,"publicationDate":"2025-09-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC12419693/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144874689","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

Seasons change and so do trees: Expression profiling of aspen reveals season-specific gene hubs. 季节变化，树木也一样：杨树的表达谱揭示了季节特异性基因中心。

IF 11.6 1区生物学

Plant Cell Pub Date : 2025-08-26 DOI: 10.1093/plcell/koaf213

Renuka Kolli

引用次数: 0

Expression of Concern: HAB1-SWI3B Interaction Reveals a Link between Abscisic Acid Signaling and Putative SWI/SNF Chromatin-Remodeling Complexes in Arabidopsis. 表达关注：HAB1-SWI3B相互作用揭示了脱落酸信号传导与拟南芥SWI/SNF染色质重塑复合物之间的联系。

IF 11.6 1区生物学

Plant Cell Pub Date : 2025-08-04 DOI: 10.1093/plcell/koaf193

引用次数: 0

Correction to: The heat shock factor 20-HSF4-cellulose synthase A2 module regulates heat stress tolerance in maize. 修正：热休克因子20- hsf4 -纤维素合成酶A2模块调节玉米的耐热性。

IF 11.6 1区生物学