Genome-Wide Identification, Expression and Functional Analysis Reveal the Involvement of FCS-Like Zinc Finger Gene Family in Submergence Response in Rice

Rice

Shaohong Zhang¹  Yamei Ma¹  Bin Liu¹  Junliang Zhao¹  Wu Yang¹  Jingfang Dong¹  Luo Chen¹  Jian Wang¹  Tifeng Yang¹  Hua Fu¹  Lian Zhou¹  David Edwards² 

[1] Rice Research Institute, Guangdong Academy of Agricultural Sciences, 510640, Guangzhou, China;Guangdong Key Laboratory of New Technology in Rice Breeding, 510640, Guangzhou, China;School of Biological Sciences and Institute of Agriculture, The University of Western Australia, Perth, WA, Australia;

关键词: FLZ gene family;    OsFLZ18;    SnRK1A;    Submergence;    Rice;   

DOI  :  10.1186/s12284-021-00519-3

来源: Springer

【 摘 要 】

BackgroundDirect seeding is an efficient rice cultivation practice. However, its application is often limited due to O2 deficiency following submergence, leading to poor seed germination, seedling establishment, and consequently yield loss. Identification of genes associated with tolerance to submergence and understanding their regulatory mechanisms is the fundamental way to address this problem. Unfortunately, the molecular mechanism of rice response to submergence stress is still not well understood.ResultsHere, we have performed a genome-wide identification of FCS-like zinc finger (FLZ) proteins and assessed their involvement in submergence response in rice. We identified 29 FLZ genes in rice, and the expression analysis revealed that several genes actively responded to submergence stress. Eight OsFLZ proteins interact with SnRK1A. As a case study, we demonstrated that OsFLZ18 interacted with SnRK1A and inhibited the transcriptional activation activity of SnRK1A in modulating the expression of its target gene αAmy3, a positive regulator in rice flooding tolerance. In line with this, OsFLZ18-overexpression lines displayed retarded early seedling growth and shorter coleoptile following submergence.ConclusionsThese data provide the most comprehensive information of OsFLZ genes in rice, and highlight their roles in rice submergence response.

【 授权许可】

CC BY