title: Involvement of rice histone deacetylase HDA705 in seed germination and in response to ABA and abiotic stresses.
abstract: Histone acetylation and deacetylation play crucial roles in the modification of chromatin structure and regulation of gene expression in eukaryotes. Histone acetyltransferases (HATs) and histone deacetylases (HDACs) assist to maintain the balance of chromatin acetylation status. Previous studies showed that plant HDACs are key regulators involved in response to development and stresses. In this study, we examined the expression pattern and function of HDA705, a member of the RPD3/HDA1-type HDAC in rice. Overexpression of HDA705 in rice decreased ABA and salt stress resistance during seed germination. Delayed seed germination of HDA705 overexpression lines was associated with down-regulated expression of GA biosynthetic genes and up-regulation of ABA biosynthetic genes. Moreover, overexpression of HDA705 in rice enhanced osmotic stress resistance during the seedling stage. Our findings demonstrate that HDA705 may play a role in regulating seed germination and the response to abiotic stresses in rice.
authors.affiliation: Key Laboratory of South China Agricultural Plant Molecular Analysis and Genetic Improvement, South China Botanical Garden, Chinese Academy of Sciences, Guangzhou, China; University of Chinese Academy of Sciences, Chinese Academy of Sciences, Beijing, China.
authors.forename: Jinhui
authors.initials: J
authors.lastname: Zhao
authors.affiliation: Key Laboratory of South China Agricultural Plant Molecular Analysis and Genetic Improvement, South China Botanical Garden, Chinese Academy of Sciences, Guangzhou, China; University of Chinese Academy of Sciences, Chinese Academy of Sciences, Beijing, China.
authors.forename: Mingzhi
authors.initials: M
authors.lastname: Li
authors.affiliation: Key Laboratory of South China Agricultural Plant Molecular Analysis and Genetic Improvement, South China Botanical Garden, Chinese Academy of Sciences, Guangzhou, China; University of Chinese Academy of Sciences, Chinese Academy of Sciences, Beijing, China.
authors.forename: Dachuan
authors.initials: D
authors.lastname: Gu
authors.affiliation: Key Laboratory of South China Agricultural Plant Molecular Analysis and Genetic Improvement, South China Botanical Garden, Chinese Academy of Sciences, Guangzhou, China.
authors.forename: Xuncheng
authors.initials: X
authors.lastname: Liu
authors.affiliation: Key Laboratory of South China Agricultural Plant Molecular Analysis and Genetic Improvement, South China Botanical Garden, Chinese Academy of Sciences, Guangzhou, China.
authors.forename: Jianxia
authors.initials: J
authors.lastname: Zhang
authors.affiliation: Key Laboratory of South China Agricultural Plant Molecular Analysis and Genetic Improvement, South China Botanical Garden, Chinese Academy of Sciences, Guangzhou, China.
authors.forename: Kunlin
authors.initials: K
authors.lastname: Wu
authors.affiliation: Key Laboratory of South China Agricultural Plant Molecular Analysis and Genetic Improvement, South China Botanical Garden, Chinese Academy of Sciences, Guangzhou, China.
authors.forename: Xinhua
authors.initials: X
authors.lastname: Zhang
authors.affiliation: P. O. Box 7, Miki-cho Post Office, Ikenobe 3011-2, Kagawa-ken, 761-0799, Japan.
authors.forename: Jaime A
authors.initials: JA
authors.lastname: Teixeira da Silva
authors.affiliation: Key Laboratory of South China Agricultural Plant Molecular Analysis and Genetic Improvement, South China Botanical Garden, Chinese Academy of Sciences, Guangzhou, China. Electronic address: duanj@scib.ac.cn.
authors.forename: Jun
authors.initials: J
authors.lastname: Duan
mesh_terms: D000040:Abscisic Acid / Q000494:pharmacology; D018507:Gene Expression Regulation, Developmental / Q000187:drug effects / Q000502:physiology; D015971:Gene Expression Regulation, Enzymologic / Q000187:drug effects / Q000502:physiology; D018506:Gene Expression Regulation, Plant / Q000187:drug effects / Q000502:physiology; D018525:Germination / Q000502:physiology*; D056284:Histone Deacetylase 1 / Q000378:metabolism*; D012275:Oryza / Q000187:drug effects / Q000502:physiology*; D009997:Osmotic Pressure / Q000502:physiology*; D055049:Salt Tolerance / Q000187:drug effects / Q000502:physiology*; D036226:Seedlings / Q000187:drug effects / Q000502:physiology*; D013312:Stress, Physiological / Q000187:drug effects / Q000502:physiology
chemical_list: D000040:Abscisic Acid; D056284:Histone Deacetylase 1
keywords: Epigenetic; Germination; HDAC; Oryza sativa L; Stress