Early heading 7 interacts with DTH8, and regulates flowering time in rice
Early heading 7 interacts with DTH8, and regulates flowering time in rice
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早期抽穗 7 与 DTH8 相互作用，调节水稻的开花时间
DOI：
10.1007/s00299-019-02380-7
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发表时间：
2019-05-01
影响因子：
6.2
通讯作者：
Wan, Jianmin
中科院分区：
文献类型：
--
作者：
Cai, Maohong;Chen, Saihua;Wan, Jianmin
关键信息EH7/Ghd7与DTH8相互作用，通过控制Ehd1在水稻中的表达来调节抽穗期。 摘要 抽穗期或开花时间是重要的农艺性状，影响作物的区域适应性和产量。许多与水稻抽穗期相关的基因已被鉴定，初步的调控网络也已建立，但所涉及的蛋白质之间的关系却知之甚少。我们发现了一种开花抑制因子 EH7（早穗 7），它可以在长日照 (LD) 条件下抑制开花。 eh7等位基因比野生型(WT)抽穗早、株高短、每主穗粒数少，但在自然长日照条件下分蘖数和千粒重没有受到显着影响。生化检测表明 EH7 与 DTH8 相互作用。定量PCR表明EH7通过下调Ehd1、Hd3a和RFT1的表达来抑制抽穗期。我们提出 EH7 与 DTH8 相互作用，通过调节 Ehd1、Hd3a 和 RFT1 的表达来控制开花时间。
Key messageEH7/Ghd7 interacts with DTH8, and regulates heading date by controlling the expression of Ehd1 in rice.AbstractHeading date, or flowering time, an important agronomic trait, influences regional adaptability and yield of crops. Many genes related to heading date in rice have been identified, and a preliminary regulatory network has been established, but the relationships between proteins involved are poorly understood. We identified a flowering suppressor EH7 (Early heading 7) that represses flowering under long-day (LD) conditions. The eh7 allele caused earlier heading, shorter plant height and less grain per main panicle than did the wild type (WT), but the tiller number and 1000-grain weight were not significantly affected under natural long-day conditions. Biochemical assays showed that EH7 interacts with DTH8. Quantitative PCR showed that EH7 inhibited heading date by downregulating the expression of Ehd1, Hd3a and RFT1. We propose that EH7 interacts with DTH8 to control flowering time by regulating the expression of Ehd1, Hd3a and RFT1.