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Author Zhang X., Feng Q., Miao J., Zhu J., Zhou C., Fan D., Lu Y., Tian Q., Wang Y., Zhan Q., Wang Z.Q., Wang A., Zhang L., Shangguan Y., Li W., Chen J., Weng Q., Huang T., Tang S., Si L., Huang X., Wang Z.X., Han B.
Title The WD40 domain-containing protein Ehd5 positively regulates flowering in rice (Oryza sativa).
Abstract:
heading date (flowering time), which greatly influences regional and seasonal adaptability in rice (Oryza sativa), is regulated by many genes in different photoperiod pathways. Here, we characterized a heading date gene, Early heading date 5 (Ehd5), using a modified bulked segregant analysis method. The Ehd5 mutant showed late flowering under both short-day and long-day conditions, as well as reduced yield, compared to the wild type. Ehd5, which encodes a WD40 domain-containing protein, is induced by light and follows a circadian rhythm expression pattern. Transcriptome analysis revealed that Ehd5 acts upstream of the flowering genes Early heading date 1 (Ehd1), RICE FLOWERING LOCUS T 1 (RFT1), and heading date 3a (Hd3a). Functional analysis showed that Ehd5 directly interacts with Rice outermost cell-specific gene 4 (Roc4) and Grain number, plant height, and heading date 8 (Ghd8), which might affect the formation of Ghd7-Ghd8 complexes, resulting in increased expression of Ehd1, Hd3a and RFT1. Taken together, these results demonstrate that Ehd5 functions as a positive regulator of rice flowering and provide insight into the molecular mechanisms underlying heading date.
Journal Plant Cell
Country China
Volume
Pages
Year 2023
PubMed ID 37648256
PubMed Central ID -
DOI 10.1093/plcell/koad223
URL -
Relation
Gene EF1 EHD5 GHD7 HD3A HD5 RFT1 ROC4
INSD -
Strain Wild Core Collection -
Induced Mutation Lines(NIG Collection) -
Sterile Seed Strain -
Lethal Embryo
Mutantion Strain 		-
Stages in Each Organ
- Muant Lines (Gene) 		-
Cultivated Varieties(NIG Collection) -
Stages in Each Organ -
/rice/oryzabase