期刊
PLANT JOURNAL
卷 96, 期 4, 页码 842-854出版社
WILEY
DOI: 10.1111/tpj.14072
关键词
rice (Oryza sativa); OsOAT (ornithine delta-aminotransferase in rice); nitrogen reutilization; glume morphogenesis; seed setting
资金
- Ministry of Sciences and Technology of China [2016YFD0100901, 2016ZX08009-003]
Nitrogen is one of the most important nutrient element that is essential for plant growth and development. Many genes have been reported to contribute to nitrogen absorption and transportation. However, genes involved in nitrogen reutilization are seldom reported. Ornithine delta-aminotransferase (delta OAT) is the enzyme connecting arginine cycling and proline cycling. Here, we found that OsOAT, the homologue of delta OAT in rice, is essential for nitrogen reutilization through mediating arginase activity. In the Osoat mutant, metabolic abnormality induced by nitrogen deficiency in floret causes malformed glumes, incapable glume opening and anther indehiscence. These defects in the mutant affect the pollination process and lead to a low seed setting rate as well as abnormal seed shape. Intriguingly, urea can rescue the phenotypes of the Osoat mutant. Therefore, OsOAT is crucial for nitrogen reutilization and plays a critical role in floret development and seed setting in rice.
作者
我是这篇论文的作者
点击您的名字以认领此论文并将其添加到您的个人资料中。
推荐
暂无数据