1
|
Li S, Xing K, Qanmber G, Chen G, Liu L, Guo M, Hou Y, Lu L, Qu L, Liu Z, Yang Z. GhBES1 mediates brassinosteroid regulation of leaf size by activating expression of GhEXO2 in cotton (Gossypium hirsutum). PLANT MOLECULAR BIOLOGY 2023; 111:89-106. [PMID: 36271986 DOI: 10.1007/s11103-022-01313-5] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/30/2022] [Accepted: 09/22/2022] [Indexed: 06/16/2023]
Abstract
We proposed a working model of BR to promote leaf size through cell expansion. In the BR signaling pathway, GhBES1 affects cotton leaf size by binding to and activating the expression of the E-box element in the GhEXO2 promoter region. Brassinosteroid (BR) is an essential phytohormone that controls plant growth. However, the mechanisms of BR regulation of leaf size remain to be determined. Here, we found that the BR deficient cotton mutant pagoda1 (pag1) had a smaller leaf size than wild-type CRI24. The expression of EXORDIUM (GhEXO2) gene, was significantly downregulated in pag1. Silencing of BRI1-EMS-SUPPRESSOR 1 (GhBES1), inhibited leaf cell expansion and reduced leaf size. Overexpression of GhBES1.4 promoted leaf cell expansion and enlarged leaf size. Expression analysis showed GhEXO2 expression positively correlated with GhBES1 expression. In plants, altered expression of GhEXO2 promoted leaf cell expansion affecting leaf size. Furthermore, GhBES1.4 specifically binds to the E-box elements in the GhEXO2 promoter, inducing its expression. RNA-seq data revealed many down-regulated genes related to cell expansion in GhEXO2 silenced plants. In summary, we discovered a novel mechanism of BR regulation of leaf size through GhBES1 directly activating the expression of GhEXO2.
Collapse
Affiliation(s)
- Shengdong Li
- Zhengzhou Research Base, State Key Laboratory of Cotton Biology, School of Agricultural Sciences, Zhengzhou University, Henan, 450001, Zhengzhou, China
| | - Kun Xing
- State Key Laboratory of Cotton Biology, Institute of Cotton Research, Chinese Academy of Agricultural Sciences, Anyang, 455000, Henan, China
- State Key Laboratory of Cotton Biology (Hebei Base), Hebei Agricultural University, Baoding, 071001, Hebei, China
| | - Ghulam Qanmber
- State Key Laboratory of Cotton Biology, Institute of Cotton Research, Chinese Academy of Agricultural Sciences, Anyang, 455000, Henan, China
| | - Guoquan Chen
- Zhengzhou Research Base, State Key Laboratory of Cotton Biology, School of Agricultural Sciences, Zhengzhou University, Henan, 450001, Zhengzhou, China
| | - Le Liu
- Zhengzhou Research Base, State Key Laboratory of Cotton Biology, School of Agricultural Sciences, Zhengzhou University, Henan, 450001, Zhengzhou, China
| | - Mengzhen Guo
- Zhengzhou Research Base, State Key Laboratory of Cotton Biology, School of Agricultural Sciences, Zhengzhou University, Henan, 450001, Zhengzhou, China
| | - Yan Hou
- State Key Laboratory of Cotton Biology, Institute of Cotton Research, Chinese Academy of Agricultural Sciences, Anyang, 455000, Henan, China
| | - Lili Lu
- State Key Laboratory of Cotton Biology, Institute of Cotton Research, Chinese Academy of Agricultural Sciences, Anyang, 455000, Henan, China
| | - Lingbo Qu
- College of Chemistry, Zhengzhou University, Henan, 450001, Zhengzhou, China
| | - Zhao Liu
- Zhengzhou Research Base, State Key Laboratory of Cotton Biology, School of Agricultural Sciences, Zhengzhou University, Henan, 450001, Zhengzhou, China.
| | - Zuoren Yang
- Zhengzhou Research Base, State Key Laboratory of Cotton Biology, School of Agricultural Sciences, Zhengzhou University, Henan, 450001, Zhengzhou, China.
- State Key Laboratory of Cotton Biology, Institute of Cotton Research, Chinese Academy of Agricultural Sciences, Anyang, 455000, Henan, China.
| |
Collapse
|
2
|
Wang G, Yue X, Feng Z, Cai L, Li N, Geng F, Xu C, Wang L, Wang D, Fahad S. Identification of
AtSND1
homologous
NAC
genes related to cotton fiber development, in silico analyses, and gene expression patterns. Food Energy Secur 2022. [DOI: 10.1002/fes3.407] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022] Open
Affiliation(s)
- Guifeng Wang
- School of Resources and Environmental Engineering Wuhan University of Technology Wuhan Hubei China
- Shandong Cotton Production Technical Guidance Station Jinan Shandong China
| | - Xiaomin Yue
- College of Life Science Linyi University Linyi Shandong China
| | - Zongqin Feng
- College of Life Science Linyi University Linyi Shandong China
| | - Lijuan Cai
- College of Life Science Linyi University Linyi Shandong China
| | - Na Li
- College of Life Science Linyi University Linyi Shandong China
| | - Fang Geng
- College of Life Science Linyi University Linyi Shandong China
| | - Chuanjie Xu
- College of Life Science Linyi University Linyi Shandong China
| | - Lichen Wang
- College of Life Science Linyi University Linyi Shandong China
| | - Depeng Wang
- College of Life Science Linyi University Linyi Shandong China
| | - Shah Fahad
- Hainan Key Laboratory for Sustainable Utilization of Tropical Bioresource, College of Tropical Crops Hainan University Haikou China
- Department of Agronomy The University of Haripur Haripur Pakistan
| |
Collapse
|