AUTHOR=Dong Jingfang , Li Xuezhong , Ma Yamei , Yang Jianyuan , Chen Jiansong , Yang Wu , Zhou Lian , Wang Jian , Yang TiFeng , Zhang Shaohong , Zhao Junliang , Liu Qing , Zhou Lingyan , Zhu Xiaoyuan , Liu Bin 

TITLE=Overexpression of OsGF14C enhances salinity tolerance but reduces blast resistance in rice

JOURNAL=Frontiers in Plant Science

VOLUME=14

YEAR=2023

URL=https://www.frontiersin.org/journals/plant-science/articles/10.3389/fpls.2023.1098855

DOI=10.3389/fpls.2023.1098855

ISSN=1664-462X

ABSTRACT=<p>High-salinity and blast disease are two major stresses that cause dramatic yield loss in rice production. <italic>GF14</italic> (<italic>14-3-3</italic>) <italic>genes</italic> have been reported to play important role in biotic and abiotic stresses in plants. However, the roles of <italic>OsGF14C</italic> remain unknown. To understand the functions and regulatory mechanisms of <italic>OsGF14C</italic> in regulating salinity tolerance and blast resistance in rice, we have conducted <italic>OsGF14C</italic>-overexpressing transgenic experiments in the present study. Our results showed that overexpression of <italic>OsGF14C</italic> enhanced salinity tolerance but reduced blast resistance in rice. The enhanced salinity tolerance is related to the reduction of methylglyoxal and Na<sup>+</sup> uptake instead of exclusion or compartmentation and the negative role of <italic>OsGF14C</italic> in blast resistance is associated with the suppression of <italic>OsGF14E</italic>, <italic>OsGF14F</italic> and <italic>PR</italic> genes. Our results together with the results from the previous studies suggest that the lipoxygenase gene <italic>LOX2</italic> which is regulated by <italic>OsGF14C</italic> may play roles in coordinating salinity tolerance and blast resistance in rice. The current study for the first time revealed the possible roles of <italic>OsGF14C</italic> in regulating salinity tolerance and blast resistance in rice, and laid down a foundation for further functional study and crosstalk regulation between salinity and blast resistance in rice.</p>