Os03g0819600

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The rice Os03g0819600 was reported as gh1 in 2012 [1] by researchers from China.

Annotated Information

Gene Symbol

  • Os03g0819600 <=> gh1,OsCHI,Cfi,CHI

Function

  • OsCHI encodes a protein functionally and structurally conserved to chalcone isomerases in other species.
  • The OsCHI gene was indispensable for flux of the flavonoid pathway in rice.

Phenotypic analysis

  • Compared to the wild-type variety Zhefu802 (an indica cultivar), gh1 exhibited an obvious golden pigmentation in the panicle and internode at maturity, while coloration of the hull was the most significant phenotype (Fig 2a, b).
  • As shown in Fig. 2c, gh1 panicles before heading were not significantly different from wild-type panicles at the same stage. Once the panicles grew out of the sheaths, golden pigmentation of hulls occurred conspicuously in gh1 panicles, exhibiting a marked difference from the green wild-type panicles (Fig. 2d).
  • Visual inspection of cross sections of wild-type and gh1 spikelets at the heading stages revealed that the pigments in gh1 hulls were deposited mainly in the epidermal layer and the underlying parenchyma cells (Fig. 2e, f).


Figure 2. Pigmented hulls and internodes of the gh1 mutant.[1].


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Labs working on this gene

  • State Key Laboratory of Plant Genomics, Center for Plant Gene Research, Institute of Genetics and Developmental Biology, Chinese Academy of Sciences, Beijing 100101, People's Republic of China
  • State Key Laboratory of Rice Biology, China National Rice Research Institute, Hangzhou 310006, People's Republic of China

References

  1. 1.0 1.1 Hong L, Qian Q, Tang D, Wang K, Li M, Cheng Z. A mutation in the rice chalcone isomerase gene causes the golden hull and internode 1 phenotype. Planta. 2012 Jul;236(1):141-51. doi: 10.1007/s00425-012-1598-x. PubMed PMID: 22286805.

Structured Information