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Ramie BnALDH genes and their potential role involved in adaptation to hydroponic culturing condition

文献类型： 外文期刊

作者： Chen, Jikang 1 ; Gao, Gang 2 ; Yu, Chunming 2 ; Chen, Ping 2 ; Chen, Kunmei 2 ; Wang, Xiaofei 2 ; Bai, Lianyang 1 ; Zhu, 1 ;

作者机构： 1.Hunan Univ, Longping Branch, Grad Sch, Changsha 410082, Peoples R China

2.Chinese Acad Agr Sci, Inst Bast Fiber Crops, Changsha 410205, Peoples R China

3.Hunan Acad Agr Sci, Changsha 410125, Peoples R China

4.Natl Breeding Ctr Bast Fiber Crops, Changsha 410125, Peoples R China

关键词： Ramie; Aldehyde dehydrogenases; Hydroponic culturing; Oxidative stress; Heterologous expression

期刊名称：INDUSTRIAL CROPS AND PRODUCTS （ 影响因子：5.645； 五年影响因子：5.749 ）

ISSN： 0926-6690

年卷期： 2020 年 157 卷

页码：

收录情况： SCI

摘要： It is an increasing interest in developing a hydroponic culture system for ramie propagation, which provide a promising method for blocking-up the soilborne diseases. However, there is an urgent need for better understanding of ramie adaptation mechanism during hydroponic culturing under low-oxygen condition. In this study, a genome-wide study plus transcriptomic and proteomic analysis was conducted to profile the molecular responses related to ramie oxidative adaption. The results showed that aldehyde dehydrogenases (ALDHs) played important roles in molecular oxygen deficiency and anaerobic metabolism in ramie. Totally, 24 ALDH genes in ramie genome were identified and grouped into 8 superfamily. All of these 24 BnALDH genes, which are unevenly distributed on the 12 chromosomes, exhibited differential expression patterns under hydroponic and soiled culturing. The expression level of almost all the BnALDHs in leaves are lower than in the mots. The BnALDHs classified into family 2 and family 10 were up-regulated in the hydroponic cultured ramie mots. Especially, BnALDH18 belonging to family 10 showed the strongest response to low-oxygen stress. In addition, heterologous overexpression analysis of BnALDH18 in Escherichia coli showed its function for elevating tolerance to oxidative stress. The genome-wide identification and analysis of evolution and expression manner demonstrated that BnALDHs are promising and untapped genetic resources for improving oxygen deficiency tolerance of ramie under hydroponic culturing.

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