Early Heading 7 Interacts with DTH8, and Regulates Flowering Time in Rice

Overview

Journal Plant Cell Rep

Publisher Springer

Date 2019 Feb 22

PMID 30790011

Citations 11

Authors

Maohong Cai

Saihua Chen

Mingming Wu

Tianhui Zheng

Liang Zhou

Chaonan Li

Huan Zhang

Jiachang Wang

Xinyang Xu

Juntao Chai

Yulong Ren

Xiuping Guo

Xin Zhang

Cailin Lei

Zhijun Cheng

Jie Wang

Ling Jiang

Huqu Zhai

Haiyang Wang

Shanshan Zhu

Jianmin Wan

Affiliations

Soon will be listed here.

Abstract

EH7/Ghd7 interacts with DTH8, and regulates heading date by controlling the expression of Ehd1 in rice. Heading 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.

Citing Articles

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Improving yield-related traits by editing the promoter of the heading date gene Ehd1 in rice.

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The WD40 domain-containing protein Ehd5 positively regulates flowering in rice (Oryza sativa).

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regulates heading date in rice.

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