Molecular characterization of a stress-induced NAC gene, GhSNAC3, from Gossypium hirsutum
文献类型： 外文期刊
作者： Liu, Zhan-Ji 1 ; Li, Fei 1 ; Wang, Li-Guo 1 ; Liu, Ren-Zhong 1 ; Ma, Jun-Jun 1 ; Fu, Ming-Chuan 1 ;
作者机构： 1.Shandong Acad Agr Sci, Cotton Res Ctr, Jinan 250100, Shandong, Peoples R China
2.Shihezi Univ, Coll Life Sci, Shihezi 832003, Peoples R China
关键词： NAC gene; GhSNAC3 gene; expression analysis; drought; salt; Gossypium hirsutum
期刊名称：JOURNAL OF GENETICS （ 影响因子：1.166； 五年影响因子：1.212 ）
ISSN： 0022-1333
年卷期： 2018 年 97 卷 2 期
页码：
收录情况： SCI
摘要： NAC genes, specific to plants, play important roles in plant development as well as in response to biotic and abiotic stresses. Here, a novel gene encoding a NAC domain, named as GhSNAC3, was isolated from upland cotton (Gossypium hirsutum L.). Sequence analyses showed that GhSNAC3 encodes a protein of 346 amino acids with an estimated molecular mass of 38.4 kDa and pI of 8.87. Transient localization assays in onion epidermal cells confirmed GhSNAC3 is a nuclear protein. Transactivation studies using a yeast system revealed that GhSNAC3 functions as a transcription activator. Quantitative real-time polymerase chain reaction analysis indicated that GhSNAC3 was induced by high salinity, drought and abscisic acid treatments. We overexpressed GhSNAC3 in tobacco by using Agrobacterium-mediated transformation. Transgenic lines produced longer primary roots and more fresh weight under salt and drought stresses as compared to wild-type plants. Collectively, our results indicated that overexpression of GhSNAC3 in tobacco can enhance drought and salt tolerances.
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