| Autor: |
Jinpeng Huang, Zhiming Chen, Jiajia Lin, Binbin Guan, Jinwen Chen, Zesen Zhang, Fangyu Chen, Liangrong Jiang, Jingsheng Zheng, Tiansheng Wang, Huiqing Chen, Wangyou Xie, Senhao Huang, Houcong Wang, Yumin Huang, Rongyu Huang |
| Rok vydání: |
2022 |
| Předmět: |
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| Zdroj: |
Plant science : an international journal of experimental plant biology. 325 |
| ISSN: |
1873-2259 |
| Popis: |
Grain weight is an important characteristic of grain shape and a key contributing factor to the grain yield in rice. Here, we report that gw2.1, a new allele of the Grain Width and Weight 2 (GW2) gene, regulates grain size and grain weight. A single nucleotide substitution in the coding sequence (CDS) of gw2.1 resulted in the change of glutamate to lysine (E128K) in GW2.1 protein. Complementation tests and GW2 overexpression experiments demonstrated that the missense mutation in gw2.1 was responsible for the phenotype of enlarged grain size in the mutant line jf42. The large grain trait of the near-isogenic line NIL-gw2.1 was found to result from increased cell proliferation during flower development. Meanwhile, NIL-gw2.1 was shown to increase grain yield without compromising the grain quality. The GW2 protein was localized to the cell nucleus and membrane, and interacted with CHB705, a subunit of the chromatin remodeling complex. Finally, the F |
| Databáze: |
OpenAIRE |
| Externí odkaz: |
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