A novel ethylene-responsive factorIbERF4from sweetpotato negatively regulates abiotic stress

文献类型： 外文期刊

第一作者： Yu, Yang

作者： Yu, Yang;Ma, Peiyong;Jia, Zhaodong;Guo, Xiaoding;Xie, Yizhi;Bian, Xiaofeng;Kim, Ho Soo;Kwak, Sang-Soo;Zhang, Peng;Bian, Xiaofeng

作者机构：

关键词： Sweetpotato; Ethylene; Abiotic stress; Transgenic; Gene cloning

期刊名称：PLANT BIOTECHNOLOGY REPORTS （ 影响因子：2.01； 五年影响因子：1.907 ）

ISSN： 1863-5466

年卷期： 2020 年 14 卷 4 期

页码：

收录情况： SCI

摘要： The ERF (ethylene-responsive element-bindingfactor) transcription factor family plays important roles in abiotic and biotic stress responses in plants. An EAR motif-containing ERF gene,IbERF4, was isolated from sweetpotato [Ipomoea batatas(L.) Lam].IbERF4was highly expressed in the early stage of storage roots and can be induced by various stresses. By overexpressingIbERF4in Arabidopsis, the transgenic Arabidopsis showed greater sensitivity to drought and salt stress by down-regulating stress-related genes, such asrd22,rd29,AtCBF1andAtCBF2. OverexpressingIbERF4in sweetpotato made the transgenic sweetpotato more sensitive to salt stress and made propagating new seedlings more difficult. Consistently, the transcriptomic profiling results showed that genes involved in oxidative stress were significantly down-regulated in sweetpotato overexpression lines. These results indicated that IbERF4plays as key regulators in sweetpotato abiotic stress.

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