Identification and characterization of drought-responsive CC-type glutaredoxins from cassava cultivars reveals their involvement in ABA signalling
文献类型： 外文期刊
作者： Ruan, Meng-Bin 5 ; Yang, Yi-Ling 2 ; Li, Kai-Mian 3 ; Guo, Xin 4 ; Wang, Bin 4 ; Yu, Xiao-Ling 1 ; Peng, Ming 1 ;
作者机构： 1.Chinese Acad Trop Agr Sci, Inst Trop Biosci & Biotechnol, Haikou 571101, Hainan, Peoples R China
2.Guangdong Acad Agr Sci, Guangdong Prov Key Lab Crop Genet Improvement, Crops Res Inst, Guangzhou 510640, Guangdong, Peoples R China
3.Chinese Acad Trop Agr Sci, Trop Crops Genet Resources Inst, Danzhou 571701, Peoples R China
4.Huazhong Agr Univ, Wuhan 430070, Peoples R China
5.Minist Agr, Key Lab Biol & Genet Resources Torp Crops, Haikou 571101, Hainan, Peoples R China
关键词： Cassava (Manihot esculenta); Drought response; ABA; CC-type glutaredoxin; Transgenic Arabidopsis; TGA factors
期刊名称：BMC PLANT BIOLOGY （ 影响因子：4.215； 五年影响因子：4.96 ）
ISSN： 1471-2229
年卷期： 2018 年 18 卷
页码：
收录情况： SCI
摘要： BackgroundCC-type glutaredoxins (GRXs) are plant-specific glutaredoxin, play regulatory roles in response of biotic and abiotic stress. However, it is not clear whether the CC-type GRXs are involve in drought response in cassava (Manihot esculenta), an important tropical tuber root crop.ResultsHerein, genome-wide analysis identified 18 CC-type GRXs in the cassava genome, of which six (namely MeGRXC3, C4, C7, C14, C15, and C18) were induced by drought stress in leaves of two cassava cultivars Argentina 7 (Arg7) and South China 124 (SC124). Exogenous abscisic acid (ABA) application induced the expression of all the six CC-type GRXs in leaves of both Arg7 and SC124 plants. Overexpression of MeGRXC15 in Arabidopsis (Col-0) increases tolerance of ABA on the sealed agar plates, but results in drought hypersensitivity in soil-grown plants. The results of microarray assays show that MeGRXC15 overexpression affected the expression of a set of transcription factors which involve in stress response, ABA, and JA/ET signalling pathway. The results of protein interaction analysis show that MeGRXC15 can interact with TGA5 from Arabidopsis and MeTGA074 from cassava.ConclusionsCC-type glutaredoxins play regulatory roles in cassava response to drought possibly through ABA signalling pathway.
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