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The rice Os08g0143400 was reported as Hd18 in 2016 [1] by researchers from Japan.

Annotated Information

Gene Symbol

  • Os08g0143400 <=> Hd18


  • Hd18 acts as an accelerator in the rice-flowering pathway under both short- and long-day conditions by elevating transcription levels of Ehd1

Phenotypic analysis

  • The Hayamasari Hd18 allele and knockdown of Hd18 gene expression delayed the flowering time of rice plants regardless of the day-length condition.

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Labs working on this gene

  • National Institute of Agrobiological Sciences, 2-1-2 Kannondai, Tsukuba, Ibaraki 305-8602, Japan


  1. Shibaya T, Hori K, Ogiso-Tanaka E, Yamanouchi U, Shu K, Kitazawa N, Shomura A, Ando T, Ebana K, Wu J, Yamazaki T, Yano M. Hd18, Encoding Histone Acetylase Related to Arabidopsis FLOWERING LOCUS D, is Involved in the Control of Flowering Time in Rice. Plant Cell Physiol. 2016 Sep;57(9):1828-38. doi:10.1093/pcp/pcw105. Epub 2016 Jun 18. PubMed PMID: 27318280.

Structured Information