期刊
RICE
卷 14, 期 1, 页码 -出版社
SPRINGER
DOI: 10.1186/s12284-021-00519-3
关键词
FLZ gene family; OsFLZ18; SnRK1A; Submergence; Rice
类别
资金
- Science and Technology Program of Guangzhou [202002030375, 201804020078]
- Innovation Team Project of Guangdong Modern Agricultural Industrial System [2021KJ106]
- Special fund for scientific innovation strategy-construction of high level Academy of Agriculture Science [202015]
- Natural Science Foundation of Guangdong Province [2019A1515010003]
- National Natural Science Foundation of China [31901441]
- Guangdong Provincial International Cooperation Project of Science Technology [2021A0505030048]
- evaluation and operation funds of Gungdong key laboratories [2020B1212060047]
The study identified 29 FCS-like zinc finger (FLZ) genes in rice, several of which actively responded to submergence stress. Eight OsFLZ proteins interact with SnRK1A, and it was demonstrated that OsFLZ18 inhibits the transcriptional activation activity of SnRK1A in modulating flooding tolerance. OsFLZ genes play a significant role in rice submergence response.
Background Direct seeding is an efficient rice cultivation practice. However, its application is often limited due to O-2 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. Results Here, 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 alpha Amy3, a positive regulator in rice flooding tolerance. In line with this, OsFLZ18-overexpression lines displayed retarded early seedling growth and shorter coleoptile following submergence. Conclusions These data provide the most comprehensive information of OsFLZ genes in rice, and highlight their roles in rice submergence response.
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