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Involvement of an ABI-like protein and a Ca2+-ATPase in drought tolerance as revealed by transcript profiling of a sweetpotato somatic hybrid and its parents Ipomoea batatas (L.) Lam. and I-triloba L.

文献类型： 外文期刊

作者： Yang, Yufeng 1 ; Wang, Yannan 1 ; Jia, Licong 2 ; Yang, Guohong 1 ; Xu, Xinzhi 1 ; Zhai, Hong 2 ; He, Shaozhen 3 ; Li, Ju 1 ;

作者机构： 1.Henan Acad Agr Sci, Food Crop Inst, Zhengzhou, Henan, Peoples R China

2.China Agr Univ, Minist Agr, Key Lab Sweetpotato Biol & Biotechnol, Beijing, Peoples R China

3.China Agr Univ, Minist Agr, Key Lab Sweetpotato Biol & Biotechnol, Beijing, Peoples

期刊名称：PLOS ONE （ 影响因子：3.24； 五年影响因子：3.788 ）

ISSN： 1932-6203

年卷期： 2018 年 13 卷 2 期

页码：

收录情况： SCI

摘要： Previously, we obtained the sweetpotato somatic hybrid KT1 from a cross between sweetpotato (Ipomoea batatas (L.) Lam.) cv. Kokei No. 14 and its drought-tolerant wild relative I. triloba L. KT1 not only inherited the thick storage root characteristic of Kokei No. 14 but also the drought-tolerance trait of I. triloba L. The aim of this study was to explore the molecular mechanism of the drought tolerance of KT1. Four-week-old in vitro-grown plants of KT1, Kokei No. 14, and I. triloba L. were subjected to a simulated drought stress treatment (30% PEG6000) for 0, 6, 12 and 24 h. Total RNA was extracted from samples at each time point, and then used for transcriptome sequencing. The gene transcript profiles of KT1 and its parents were compared to identify differentially expressed genes, and drought-related modules were screened by a weighted gene co-expression network analysis. The functions of ABI-like protein and Ca2+-ATPase, two proteins screened from the cyan and light yellow modules, were analyzed in terms of their potential roles in drought tolerance in KT1 and its parents. These analyses of the drought responses of KT1 and its somatic donors at the transcriptional level provide new annotations for the molecular mechanism of drought tolerance in the somatic hybrid KT1 and its parents.

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