Plasma membrane H+-ATPase overexpression increases rice yield via simultaneous enhancement of nutrient uptake and photosynthesis

Maoxing Zhang, Yin Wang, Xi Chen, Feiyun Xu, Ming Ding, Wenxiu Ye, Yuya Kawai, Yosuke Toda, Yuki Hayashi, Takamasa Suzuki, Houqing Zeng, Liang Xiao, Xin Xiao, Jin Xu, Shiwei Guo, Feng Yan, Qirong Shen, Guohua Xu, Toshinori Kinoshita () and Yiyong Zhu ()
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Maoxing Zhang: Nanjing Agricultural University
Yin Wang: Nagoya University
Xi Chen: Nanjing Agricultural University
Feiyun Xu: Nanjing Agricultural University
Ming Ding: Nanjing Agricultural University
Wenxiu Ye: Nagoya University
Yuya Kawai: Nagoya University
Yosuke Toda: Nagoya University
Yuki Hayashi: Nagoya University
Takamasa Suzuki: Chubu University
Houqing Zeng: Hangzhou Normal University
Liang Xiao: Nanjing Agricultural University
Xin Xiao: Anhui Science and Technology University
Jin Xu: Shanxi Agricultural University
Shiwei Guo: Nanjing Agricultural University
Feng Yan: Justus Liebig University
Qirong Shen: Nanjing Agricultural University
Guohua Xu: Nanjing Agricultural University
Toshinori Kinoshita: Nagoya University
Yiyong Zhu: Nanjing Agricultural University

Nature Communications, 2021, vol. 12, issue 1, 1-12

Abstract: Abstract Nitrogen (N) and carbon (C) are essential elements for plant growth and crop yield. Thus, improved N and C utilisation contributes to agricultural productivity and reduces the need for fertilisation. In the present study, we find that overexpression of a single rice gene, Oryza sativa plasma membrane (PM) H+-ATPase 1 (OSA1), facilitates ammonium absorption and assimilation in roots and enhanced light-induced stomatal opening with higher photosynthesis rate in leaves. As a result, OSA1 overexpression in rice plants causes a 33% increase in grain yield and a 46% increase in N use efficiency overall. As PM H+-ATPase is highly conserved in plants, these findings indicate that the manipulation of PM H+-ATPase could cooperatively improve N and C utilisation, potentially providing a vital tool for food security and sustainable agriculture.

Date: 2021
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DOI: 10.1038/s41467-021-20964-4

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