1
|
Ye W, Hu S, Wu L, Ge C, Cui Y, Chen P, Wang X, Xu J, Ren D, Dong G, Qian Q, Guo L. White stripe leaf 12 ( WSL12), encoding a nucleoside diphosphate kinase 2 (OsNDPK2), regulates chloroplast development and abiotic stress response in rice ( Oryza sativa L.). Mol Breed 2016; 36:57. [PMID: 27212889 PMCID: PMC4851688 DOI: 10.1007/s11032-016-0479-6] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/23/2015] [Accepted: 04/18/2016] [Indexed: 05/02/2023]
Abstract
Chloroplast is a crucial organelle for plant photosynthesis and maintaining normal life activities in higher plants. Although some genes related to chloroplast development and pigment synthesis have been identified or cloned in rice, little is known about the relationship between these genes and abiotic stress response. In this study, we identified a novel mutant white stripe leaf 12 (wsl12) affecting pigment synthesis, chloroplast development and abiotic stress response in rice. The mutant phenotype was obvious at seeding and tillering stages and in response to the temperature change. Genetic analysis of reciprocal crosses between wsl12 and wild-type plants showed that wsl12 was a recessive mutant in a single nuclear locus. Map-based cloning revealed that the WSL12 locus encoded OsNDPK2, one of the three nucleoside diphosphate kinases (OsNDPKs). WSL12 expressed in all tested tissues, while it highly expressed in leaves and young tissues. The WSL12 protein localized to the chloroplast. The wsl12 mutant showed higher superoxide anion level and enhanced sensitivity to abscisic acid (ABA) and salinity. The transcription pattern of many genes involved in chlorophyll biosynthesis, ABA synthesis, light signaling pathway, reactive oxygen species-scavenging pathway and the other two OsNDPKs was altered in the wsl12 mutant. These results indicate that the OsNDPK2 encoded by WSL12 plays an important role in chloroplast development and chlorophyll biosynthesis by regulating the expression levels of related genes. In addition, WSL12 also affects the response to abiotic stress, such as ABA and salinity in rice, and is beneficial to molecular breeding of stress tolerance.
Collapse
Affiliation(s)
- Weijun Ye
- />State Key Laboratory of Rice Biology, China National Rice Research Institute, Chinese Academy of Agricultural Sciences, Tiyuchang Road 359, Hangzhou, 310006 China
- />College of Agriculture and Biotechnology, Zhejiang University, Hangzhou, 310058 China
| | - Shikai Hu
- />State Key Laboratory of Rice Biology, China National Rice Research Institute, Chinese Academy of Agricultural Sciences, Tiyuchang Road 359, Hangzhou, 310006 China
- />Agricultural Genomics Institute, Chinese Academy of Agricultural Sciences, Shenzhen, 518120 China
| | - Liwen Wu
- />State Key Laboratory of Rice Biology, China National Rice Research Institute, Chinese Academy of Agricultural Sciences, Tiyuchang Road 359, Hangzhou, 310006 China
| | - Changwei Ge
- />State Key Laboratory of Rice Biology, China National Rice Research Institute, Chinese Academy of Agricultural Sciences, Tiyuchang Road 359, Hangzhou, 310006 China
| | - Yongtao Cui
- />State Key Laboratory of Rice Biology, China National Rice Research Institute, Chinese Academy of Agricultural Sciences, Tiyuchang Road 359, Hangzhou, 310006 China
| | - Ping Chen
- />State Key Laboratory of Rice Biology, China National Rice Research Institute, Chinese Academy of Agricultural Sciences, Tiyuchang Road 359, Hangzhou, 310006 China
| | - Xiaoqi Wang
- />State Key Laboratory of Rice Biology, China National Rice Research Institute, Chinese Academy of Agricultural Sciences, Tiyuchang Road 359, Hangzhou, 310006 China
| | - Jie Xu
- />State Key Laboratory of Rice Biology, China National Rice Research Institute, Chinese Academy of Agricultural Sciences, Tiyuchang Road 359, Hangzhou, 310006 China
| | - Deyong Ren
- />State Key Laboratory of Rice Biology, China National Rice Research Institute, Chinese Academy of Agricultural Sciences, Tiyuchang Road 359, Hangzhou, 310006 China
| | - Guojun Dong
- />State Key Laboratory of Rice Biology, China National Rice Research Institute, Chinese Academy of Agricultural Sciences, Tiyuchang Road 359, Hangzhou, 310006 China
| | - Qian Qian
- />State Key Laboratory of Rice Biology, China National Rice Research Institute, Chinese Academy of Agricultural Sciences, Tiyuchang Road 359, Hangzhou, 310006 China
- />Agricultural Genomics Institute, Chinese Academy of Agricultural Sciences, Shenzhen, 518120 China
| | - Longbiao Guo
- />State Key Laboratory of Rice Biology, China National Rice Research Institute, Chinese Academy of Agricultural Sciences, Tiyuchang Road 359, Hangzhou, 310006 China
| |
Collapse
|