TY - JOUR
T1 - G protein γ subunit qPE9-1 is involved in rice adaptation under elevated CO2 concentration by regulating leaf photosynthesis.
AU - Wang, Ke
AU - Xu, Feiyun
AU - Yuan, Wei
AU - Sun, Leyun
AU - Wang, Shaoxian
AU - Aslam, Mehtab Muhammad
AU - Zhang, Jianhua
AU - Xu, Weifeng
N1 - Funding information:
This work was supported by National Key Research and Development Program of China (2017YFE0118100), National Natural Science Foundation of China (31761130073, 31872169, and 31901428).
Publisher copyright:
© The Author(s). 2021
PY - 2021/12
Y1 - 2021/12
N2 - G protein γ subunit qPE9-1 plays multiple roles in rice growth and development. However, the role of qPE9-1 in rice exposed to elevated carbon dioxide concentration (eCO2) is unknown. Here, we investigated its role in the regulation of rice growth under eCO2 conditions using qPE9-1 overexpression (OE) lines, RNAi lines and corresponding WT rice. Compared to atmospheric carbon dioxide concentration (aCO2), relative expression of qPE9-1 in rice leaf was approximately tenfold higher under eCO2. Under eCO2, the growth of WT and qPE9-1-overexpressing rice was significantly higher than under aCO2. Moreover, there was no significant effect of eCO2 on the growth of qPE9-1 RNAi lines. Furthermore, WT and qPE9-1-overexpressing rice showed higher net photosynthetic rate and carbohydrate content under eCO2 than under aCO2. Moreover, the relative expression of some photosynthesis related genes in WT, but not in RNAi3 line, showed significant difference under eCO2 in RNA-seq analysis. Compared to WT and RNAi lines, the rbcL gene expression and Rubisco content of rice leaves in qPE9-1-overexpressors were higher under eCO2. Overall, these results suggest that qPE9-1 is involved in rice adaptation under elevated CO2 concentration by regulating leaf photosynthesis via moderating rice photosynthetic light reaction and Rubisco content.
AB - G protein γ subunit qPE9-1 plays multiple roles in rice growth and development. However, the role of qPE9-1 in rice exposed to elevated carbon dioxide concentration (eCO2) is unknown. Here, we investigated its role in the regulation of rice growth under eCO2 conditions using qPE9-1 overexpression (OE) lines, RNAi lines and corresponding WT rice. Compared to atmospheric carbon dioxide concentration (aCO2), relative expression of qPE9-1 in rice leaf was approximately tenfold higher under eCO2. Under eCO2, the growth of WT and qPE9-1-overexpressing rice was significantly higher than under aCO2. Moreover, there was no significant effect of eCO2 on the growth of qPE9-1 RNAi lines. Furthermore, WT and qPE9-1-overexpressing rice showed higher net photosynthetic rate and carbohydrate content under eCO2 than under aCO2. Moreover, the relative expression of some photosynthesis related genes in WT, but not in RNAi3 line, showed significant difference under eCO2 in RNA-seq analysis. Compared to WT and RNAi lines, the rbcL gene expression and Rubisco content of rice leaves in qPE9-1-overexpressors were higher under eCO2. Overall, these results suggest that qPE9-1 is involved in rice adaptation under elevated CO2 concentration by regulating leaf photosynthesis via moderating rice photosynthetic light reaction and Rubisco content.
KW - Elevated CO2
KW - G protein
KW - qPE9-1
KW - Rubisco
KW - Rice
UR - https://www.scopus.com/inward/record.uri?eid=2-s2.0-85110165418&doi=10.1186%2fs12284-021-00507-7&partnerID=40&md5=32f7a54b72379da3b339c0cfed3877e2
U2 - 10.1186/s12284-021-00507-7
DO - 10.1186/s12284-021-00507-7
M3 - Journal article
SN - 1939-8425
VL - 14
JO - Rice
JF - Rice
IS - 1
M1 - 67
ER -