Arid
DOI10.1016/j.plaphy.2018.08.002
AmDREB2C, from Ammopiptanthus mongolicus, enhances abiotic stress tolerance and regulates fatty acid composition in transgenic Arabidopsis
Yin, Yumei; Jiang, Xiaoxu; Ren, Meiyan; Xue, Min; Nan, Dina; Wang, Zhilin; Xing, Yanping; Wang, Maoyan
通讯作者Wang, Maoyan
来源期刊PLANT PHYSIOLOGY AND BIOCHEMISTRY
ISSN0981-9428
出版年2018
卷号130页码:517-528
英文摘要

Dehydration-responsive element-binding (DREB) transcription factors (TFs) play a vital role in plant response to abiotic stresses. However, little is known about DREB TFs in plants adapted to harsh environments and in the formation of polyunsaturated fatty acids (PUFAs), a major membrane component closely associated with plant stress tolerance. Here, we characterized AmDREB2C in Ammopiptanthus mongolicus (Maxim. ex kom.) Cheng F., a desert evergreen broadleaf shrub with a high tolerance to harsh environments. AmDREB2C encodes a canonical DREB2-type TF, and the protein was localized in the nucleus. AmDREB2C had the highest expression levels in leaves of naturally growing shrubs in the wild during the winter season of a year of sampling. The expression was also induced by cold, heat and drought stresses in laboratory-cultured seedlings. Moreover, AmDREB2C was most abundantly expressed in young leaves and immature seeds rather than other tissues of the shrubs. Constitutive expression of AmDREB2C in Arabidopsis enhanced freezing, heat and drought tolerances of the transgenic plants, likely through inducing the expression of important stress-responsive genes. The transgene also increased the level of linolenic acid (C18:3), a major PUFA in most plant species, in leaves and seeds of the transgenic plants. Correspondingly, the transcription of FAD3, FAD7 and FADE, three genes encoding fatty acid desaturases (FADs) responsible for the production of C18:3, showed a differential up-regulation in these two organs. This study provides new insight into the underlying molecular mechanisms of A. mongolicus’ ability to endure harsh environments and DREB TF regulation of fatty acid denaturation.


英文关键词Ammopiptanthus mongolicus DREB transcription factor Abiotic stress Polyunsaturated fatty acid Fatty acid desaturase
类型Article
语种英语
国家Peoples R China
收录类别SCI-E
WOS记录号WOS:000444789200051
WOS关键词RESPONSIVE GENE-EXPRESSION ; TRANSCRIPTION FACTOR DREB2A ; OMEGA-3 DESATURASE ; GENOME-WIDE ; PLANTS ; THALIANA ; DROUGHT ; RICE ; OVEREXPRESSION ; UNSATURATION
WOS类目Plant Sciences
WOS研究方向Plant Sciences
资源类型期刊论文
条目标识符http://119.78.100.177/qdio/handle/2XILL650/212218
作者单位Inner Mongolia Agr Univ, Coll Life Sci, 306 Zhaowuda St, Hohhot 010018, Peoples R China
推荐引用方式
GB/T 7714
Yin, Yumei,Jiang, Xiaoxu,Ren, Meiyan,et al. AmDREB2C, from Ammopiptanthus mongolicus, enhances abiotic stress tolerance and regulates fatty acid composition in transgenic Arabidopsis[J],2018,130:517-528.
APA Yin, Yumei.,Jiang, Xiaoxu.,Ren, Meiyan.,Xue, Min.,Nan, Dina.,...&Wang, Maoyan.(2018).AmDREB2C, from Ammopiptanthus mongolicus, enhances abiotic stress tolerance and regulates fatty acid composition in transgenic Arabidopsis.PLANT PHYSIOLOGY AND BIOCHEMISTRY,130,517-528.
MLA Yin, Yumei,et al."AmDREB2C, from Ammopiptanthus mongolicus, enhances abiotic stress tolerance and regulates fatty acid composition in transgenic Arabidopsis".PLANT PHYSIOLOGY AND BIOCHEMISTRY 130(2018):517-528.
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