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Du Q, Fang Y, Jiang J, Chen M, Fu X, Yang Z, Luo L, Wu Q, Yang Q, Wang L, Qu Z, Li X, Xie X. Characterization of histone deacetylases and their roles in response to abiotic and PAMPs stresses in Sorghum bicolor. BMC Genomics 2022; 23:28. [PMID: 34991465 PMCID: PMC8739980 DOI: 10.1186/s12864-021-08229-2] [Citation(s) in RCA: 6] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/01/2021] [Accepted: 12/01/2021] [Indexed: 11/19/2022] Open
Abstract
BACKGROUND Histone deacetylases (HDACs) play an important role in the regulation of gene expression, which is indispensable in plant growth, development, and responses to environmental stresses. In Arabidopsis and rice, the molecular functions of HDACs have been well-described. However, systematic analysis of the HDAC gene family and gene expression in response to biotic and abiotic stresses has not been reported for sorghum. RESULTS We conducted a systematic analysis of the sorghum HDAC gene family and identified 19 SbHDACs mainly distributed on eight chromosomes. Phylogenetic tree analysis of SbHDACs showed that the gene family was divided into three subfamilies: RPD3/HDA1, SIR2, and HD2. Tissue-specific expression results showed that SbHDACs displayed different expression patterns in different tissues, indicating that these genes may perform different functions in growth and development. The expression pattern of SbHDACs under different stresses (high and low temperature, drought, osmotic and salt) and pathogen-associated molecular model (PAMPs) elf18, chitin, and flg22) indicated that SbHDAC genes may participate in adversity responses and biological stress defenses. Overexpression of SbHDA1, SbHDA3, SbHDT2 and SbSRT2 in Escherichia coli promoted the growth of recombinant cells under abiotic stress. Interestingly, we also showed that the sorghum acetylation level was enhanced when plants were under cold, heat, drought, osmotic and salt stresses. The findings will help us to understand the HDAC gene family in sorghum, and illuminate the molecular mechanism of the responses to abiotic and biotic stresses. CONCLUSION We have identified and classified 19 HDAC genes in sorghum. Our data provides insights into the evolution of the HDAC gene family and further support the hypothesis that these genes are important for the plant responses to abiotic and biotic stresses.
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Affiliation(s)
- Qiaoli Du
- Key Laboratory of Agricultural Microbiology, College of Agriculture, Guizhou University, Guiyang, 550025, PR China
| | - Yuanpeng Fang
- Key Laboratory of Agricultural Microbiology, College of Agriculture, Guizhou University, Guiyang, 550025, PR China
| | - Junmei Jiang
- State Key Laboratory Breeding Base of Green Pesticide and Agricultural Bioengineering, Key Laboratory of Green Pesticide and Agricultural Bioengineering, Ministry of Education, Guizhou University, Guiyang, 550025, PR China
| | - Meiqing Chen
- Key Laboratory of Agricultural Microbiology, College of Agriculture, Guizhou University, Guiyang, 550025, PR China
| | - Xiaodong Fu
- Key Laboratory of Agricultural Microbiology, College of Agriculture, Guizhou University, Guiyang, 550025, PR China
| | - Zaifu Yang
- Key Laboratory of Agricultural Microbiology, College of Agriculture, Guizhou University, Guiyang, 550025, PR China
| | - Liting Luo
- Key Laboratory of Agricultural Microbiology, College of Agriculture, Guizhou University, Guiyang, 550025, PR China
| | - Qijiao Wu
- Key Laboratory of Agricultural Microbiology, College of Agriculture, Guizhou University, Guiyang, 550025, PR China
| | - Qian Yang
- Key Laboratory of Agricultural Microbiology, College of Agriculture, Guizhou University, Guiyang, 550025, PR China
| | - Lujie Wang
- Key Laboratory of Agricultural Microbiology, College of Agriculture, Guizhou University, Guiyang, 550025, PR China
| | - Zhiguang Qu
- Key Laboratory of Agricultural Microbiology, College of Agriculture, Guizhou University, Guiyang, 550025, PR China
| | - Xiangyang Li
- State Key Laboratory Breeding Base of Green Pesticide and Agricultural Bioengineering, Key Laboratory of Green Pesticide and Agricultural Bioengineering, Ministry of Education, Guizhou University, Guiyang, 550025, PR China
| | - Xin Xie
- Key Laboratory of Agricultural Microbiology, College of Agriculture, Guizhou University, Guiyang, 550025, PR China.
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