☆ 4.7 Article

Molecular Traits and Functional Exploration of BES1 Gene Family in Plants

INTERNATIONAL JOURNAL OF MOLECULAR SCIENCES (2022)

Journal

INTERNATIONAL JOURNAL OF MOLECULAR SCIENCES

Volume 23, Issue 8, Pages -

Publisher

MDPI

DOI: 10.3390/ijms23084242

Keywords

BES1 genes; rice; cotton; transgenic plants; collinearity analysis; abiotic stress

Funding

Key Research Development and Promote Program of Henan province [202102110153]
National Natural Science Foundation of Xinjiang [2022D01A159]
National Natural Science Foundation of Henan [222300420588]

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Abstract

The BES1 gene family is a unique class of transcription factors that play important roles in the Brassinosteroids signaling pathway. Through analyzing the expression profiles and response to abiotic stresses of BES1 genes in Arabidopsis, rice, and cotton, the study identified the role of two rice BES1 genes in promoting root growth under drought stress, and the role of a cotton GhBES1-4 gene in enhancing salt tolerance in Arabidopsis. Furthermore, protein interaction networks were constructed to characterize the co-expressed genes with GhBES1-4. The study suggests that BES1 may have evolved in the ancestors of the first land plants.

The BES1 (BRI1-EMSSUPPRESSOR1) gene family is a unique class of transcription factors that play dynamic roles in the Brassinosteroids (BRs) signaling pathway. The published genome sequences of a large number of plants provide an opportunity to identify and perform a comprehensive functional study on the BES1 gene family for their potential roles in developmental processes and stress responses. A total of 135 BES1 genes in 27 plant species were recognized and characterized, which were divided into five well-conserved subfamilies. BES1 was not found in lower plants, such as Cyanophora paradoxa and Galdieria sulphuraria. The spatial expression profiles of BES1s in Arabidopsis, rice, and cotton, as well as their response to abiotic stresses, were analyzed. The overexpression of two rice BES1 genes, i.e., OsBES1-3 and OsBES1-5, promotes root growth under drought stress. The overexpression of GhBES1-4 from cotton enhanced the salt tolerance in Arabidopsis. Five protein interaction networks were constructed and numerous genes co-expressed with GhBES1-4 were characterized in transgenic Arabidopsis. BES1 may have evolved in the ancestors of the first land plants following its divergence from algae. Our results lay the foundation for understanding the complex mechanisms of BES1-mediated developmental processes and abiotic stress tolerance.

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Genome-wide expression analysis of carboxylesterase (CXE) gene family implies GBCXE49 functional responding to alkaline stress in cotton

Cun Rui, Fanjia Peng, Yapeng Fan, Yuexin Zhang, Zhigang Zhang, Nan Xu, Hong Zhang, Jing Wang, Shengmei Li, Tao Yang, Waqar Afzal Malik, Xuke Lu, Xiugui Chen, Delong Wang, Chao Chen, Wenwei Gao, Wuwei Ye

Summary: Carboxylesterase (CXE) genes have been identified in various cotton species and play important roles in plant growth, development, and stress resistance. This study analyzed the gene structure, expression patterns, and subcellular localization of CXE genes in different cotton species. It was found that tandem replication played a crucial role in the evolution of the CXE gene family and that GBCXE genes may be involved in the response to salt and alkaline stress through different mechanisms.

BMC PLANT BIOLOGY (2022)