Nuclear factor Y subunit GmNFYA competes with GmHDA13 for interaction with GmFVE to positively regulate salt tolerance in soybean
| Autor: | Xiao Hua Bian, Wan Ke Zhang, Wei Wei, Cui Cui Yin, Jian Jun Tao, Jin-Song Zhang, Hu Yang, Tong Cheng, Shou Yi Chen, Xiang Lu, Long Lu |
|---|---|
| Jazyk: | angličtina |
| Rok vydání: | 2021 |
| Předmět: |
Transgene
Protein subunit Plant Science promoter variation Gene Expression Regulation Plant histone deacetylation Epigenetics soybean Gene Derepression Research Articles salt stress Plant Proteins biology fungi food and beverages Salt Tolerance Plants Genetically Modified Cell biology NF‐Y Plant Breeding Histone CCAAT-Binding Factor Acetylation biology.protein Histone deacetylase Soybeans Agronomy and Crop Science Biotechnology Research Article |
| Zdroj: | Plant Biotechnology Journal |
| ISSN: | 1467-7652 1467-7644 |
| Popis: | Soybean is an important crop worldwide, but its production is severely affected by salt stress. Understanding the regulatory mechanism of salt response is crucial for improving the salt tolerance of soybean. Here, we reveal a role for nuclear factor Y subunit GmNFYA in salt tolerance of soybean likely through the regulation of histone acetylation. GmNFYA is induced by salt stress. Overexpression of GmNFYA significantly enhances salt tolerance in stable transgenic soybean plants by inducing salt‐responsive genes. Analysis in soybean plants with transgenic hairy roots also supports the conclusion. GmNFYA interacts with GmFVE, which functions with putative histone deacetylase GmHDA13 in a complex for transcriptional repression possibly by reducing H3K9 acetylation at target loci. Under salt stress, GmNFYA likely accumulates and competes with GmHDA13 for interaction with GmFVE, leading to the derepression and maintenance of histone acetylation for activation of salt‐responsive genes and finally conferring salt tolerance in soybean plants. In addition, a haplotype I GmNFYA promoter is identified with the highest self‐activated promoter activity and may be selected during future breeding for salt‐tolerant cultivars. Our study uncovers the epigenetic regulatory mechanism of GmNFYA in salt‐stress response, and all the factors/elements identified may be potential targets for genetic manipulation of salt tolerance in soybean and other crops. |
| Databáze: | OpenAIRE |
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