Frontiers in Plant Science (Sep 2021)
Efficiency of Sucrose to Starch Metabolism Is Related to the Initiation of Inferior Grain Filling in Large Panicle Rice
- Zhengrong Jiang,
- Zhengrong Jiang,
- Zhengrong Jiang,
- Qiuli Chen,
- Qiuli Chen,
- Qiuli Chen,
- Lin Chen,
- Lin Chen,
- Lin Chen,
- Lin Chen,
- Hongyi Yang,
- Hongyi Yang,
- Hongyi Yang,
- Meichen Zhu,
- Meichen Zhu,
- Meichen Zhu,
- Yanfeng Ding,
- Yanfeng Ding,
- Yanfeng Ding,
- Yanfeng Ding,
- Weiwei Li,
- Weiwei Li,
- Weiwei Li,
- Weiwei Li,
- Zhenghui Liu,
- Zhenghui Liu,
- Zhenghui Liu,
- Zhenghui Liu,
- Yu Jiang,
- Yu Jiang,
- Yu Jiang,
- Yu Jiang,
- Ganghua Li,
- Ganghua Li,
- Ganghua Li,
- Ganghua Li
Affiliations
- Zhengrong Jiang
- College of Agronomy, Nanjing Agricultural University, Nanjing, China
- Zhengrong Jiang
- Key Laboratory of Crop Physiology Ecology and Production Management, Ministry of Agriculture, Nanjing, China
- Zhengrong Jiang
- Jiangsu Collaborative Innovation Center for Modern Crop Production, Nanjing, China
- Qiuli Chen
- College of Agronomy, Nanjing Agricultural University, Nanjing, China
- Qiuli Chen
- Key Laboratory of Crop Physiology Ecology and Production Management, Ministry of Agriculture, Nanjing, China
- Qiuli Chen
- Jiangsu Collaborative Innovation Center for Modern Crop Production, Nanjing, China
- Lin Chen
- College of Agronomy, Nanjing Agricultural University, Nanjing, China
- Lin Chen
- Key Laboratory of Crop Physiology Ecology and Production Management, Ministry of Agriculture, Nanjing, China
- Lin Chen
- Jiangsu Collaborative Innovation Center for Modern Crop Production, Nanjing, China
- Lin Chen
- National Engineering and Technology Center for Information Agriculture, Nanjing, China
- Hongyi Yang
- College of Agronomy, Nanjing Agricultural University, Nanjing, China
- Hongyi Yang
- Key Laboratory of Crop Physiology Ecology and Production Management, Ministry of Agriculture, Nanjing, China
- Hongyi Yang
- Jiangsu Collaborative Innovation Center for Modern Crop Production, Nanjing, China
- Meichen Zhu
- College of Agronomy, Nanjing Agricultural University, Nanjing, China
- Meichen Zhu
- Key Laboratory of Crop Physiology Ecology and Production Management, Ministry of Agriculture, Nanjing, China
- Meichen Zhu
- Jiangsu Collaborative Innovation Center for Modern Crop Production, Nanjing, China
- Yanfeng Ding
- College of Agronomy, Nanjing Agricultural University, Nanjing, China
- Yanfeng Ding
- Key Laboratory of Crop Physiology Ecology and Production Management, Ministry of Agriculture, Nanjing, China
- Yanfeng Ding
- Jiangsu Collaborative Innovation Center for Modern Crop Production, Nanjing, China
- Yanfeng Ding
- National Engineering and Technology Center for Information Agriculture, Nanjing, China
- Weiwei Li
- College of Agronomy, Nanjing Agricultural University, Nanjing, China
- Weiwei Li
- Key Laboratory of Crop Physiology Ecology and Production Management, Ministry of Agriculture, Nanjing, China
- Weiwei Li
- Jiangsu Collaborative Innovation Center for Modern Crop Production, Nanjing, China
- Weiwei Li
- National Engineering and Technology Center for Information Agriculture, Nanjing, China
- Zhenghui Liu
- College of Agronomy, Nanjing Agricultural University, Nanjing, China
- Zhenghui Liu
- Key Laboratory of Crop Physiology Ecology and Production Management, Ministry of Agriculture, Nanjing, China
- Zhenghui Liu
- Jiangsu Collaborative Innovation Center for Modern Crop Production, Nanjing, China
- Zhenghui Liu
- National Engineering and Technology Center for Information Agriculture, Nanjing, China
- Yu Jiang
- College of Agronomy, Nanjing Agricultural University, Nanjing, China
- Yu Jiang
- Key Laboratory of Crop Physiology Ecology and Production Management, Ministry of Agriculture, Nanjing, China
- Yu Jiang
- Jiangsu Collaborative Innovation Center for Modern Crop Production, Nanjing, China
- Yu Jiang
- National Engineering and Technology Center for Information Agriculture, Nanjing, China
- Ganghua Li
- College of Agronomy, Nanjing Agricultural University, Nanjing, China
- Ganghua Li
- Key Laboratory of Crop Physiology Ecology and Production Management, Ministry of Agriculture, Nanjing, China
- Ganghua Li
- Jiangsu Collaborative Innovation Center for Modern Crop Production, Nanjing, China
- Ganghua Li
- National Engineering and Technology Center for Information Agriculture, Nanjing, China
- DOI
- https://doi.org/10.3389/fpls.2021.732867
- Journal volume & issue
-
Vol. 12
Abstract
The poor grain-filling initiation often causes the poor development of inferior spikelets (IS) which limits the yield potential of large panicle rice (Oryza sativa L.). However, it remains unclear why IS often has poor grain-filling initiation. In addressing this problem, this study conducted a field experiment involving two large panicle rice varieties, namely CJ03 and W1844, in way of removing the superior spikelets (SS) during flowering to force enough photosynthate transport to the IS. The results of this study showed that the grain-filling initiation of SS was much earlier than the IS in CJ03 and W1844, whereas the grain-filling initiation of IS in W1844 was evidently more promoted compared with the IS of CJ03 by removing spikelets. The poor sucrose-unloading ability, i.e., carbohydrates contents, the expression patterns of OsSUTs, and activity of CWI, were highly improved in IS of CJ03 and W1844 by removing spikelets. However, there was a significantly higher rise in the efficiency of sucrose to starch metabolism, i.e., the expression patterns of OsSUS4 and OsAGPL1 and activities of SuSase and AGPase, for IS of W1844 than that of CJ03. Removing spikelets also led to the changes in sugar signaling of T6P and SnRK1 level. These changes might be related to the regulation of sucrose to starch metabolism. The findings of this study suggested that poor sucrose-unloading ability delays the grain-filling initiation of IS. Nonetheless, the efficiency of sucrose to starch metabolism is also strongly linked with the grain-filling initiation of IS.
Keywords