期刊
BIOSCIENCE BIOTECHNOLOGY AND BIOCHEMISTRY
卷 84, 期 5, 页码 970-979出版社
OXFORD UNIV PRESS
DOI: 10.1080/09168451.2020.1719822
关键词
Arabidopsis; circadian clock; flowering time; PSEUDO-RESPONSE REGULATOR; rice
类别
资金
- Japan Society for the Promotion of Science [20870040, 18H02136]
- Japan Science and Technology Agency [JPMJPR11B9]
- World Premier International Research Center (WPI) Initiative, Japan
- Grants-in-Aid for Scientific Research [20870040, 18H02136] Funding Source: KAKEN
Plants flower under appropriate day-length conditions by integrating temporal information provided by the circadian clock with light and dark information from the environment. A sub-group of plant specific circadian clock-associated PSEUDO-RESPONSE REGULATOR (PRR) genes (PRR7/PRR3 sub-group) controls flowering time both in long-day and short-day plants; however, flowering control by the other two PRR gene sub-groups has been reported only in Arabidopsis thaliana (Arabidopsis), a model long-day plant. Here, we show that an Arabidopsis PRR9/PRR5 sub-group gene can control flowering time (heading date) in rice, a short-day plant. Although PRR5 promotes flowering in Arabidopsis, transgenic rice overexpressing Arabidopsis PRR5 caused late flowering. Such transgenic rice plants produced significantly higher biomass, but not grain yield, due to the late flowering. Concomitantly, expression of Hd3a, a rice florigen gene, was reduced in the transgenic rice.
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