Os07g0182000

From RiceWiki
Jump to: navigation, search

The rice Os07g0182000 was reported as OsbZIP58 in 2013 [1] by researchers from China.

Annotated Information

Figure 3. Altered seeds phenotype of the osbzip58 mutants and CLs.[1].

Gene Symbol

  • Os07g0182000 <=> OsbZIP58,bZIP58

Function

  • OsbZIP58 is a key transcriptional regulator controlling starch synthesis in rice endosperm.

Expression

  • OsbZIP58 was expressed mainly in endosperm during active starch synthesis
  • OsbZIP58 was shown to bind directly to the promoters of six starch-synthesizing genes, OsAGPL3, Wx, OsSSIIa, SBE1, OsBEIIb, and ISA2, and to regulate their expression.
  • OsbZIP58 functions as a key regulator of starch synthesis in rice seeds and provide new insights into seed quality control.

Phenotypic analysis

  • The two osbzip58 mutants showed several defective seed phenotypes, including reduced mass per 1000 seeds, reduced grain width, abnormal seed shape, and a white belly, which is a floury-white core that occupies the centre to the ventral region of the seed; (Figs 2B–E and 3F, J).
  • The osbzip58-1 mutant also had an apparently shrunken belly in the grain (Fig. 3E). SEM images of transverse sections of osbzip58-1 and osbzip58-2 grains indicated that the dorsal endosperm consisted of densely packed, polyhedral starch granules (Fig. 3G, K), which were similar to those of the wild-type Dongjin (Fig. 3C, D), while the ventral endosperm was filled with loosely packed, spherical starch granules with large air spaces (Fig. 3H, L), corresponding to the chalky region of endosperm.

You can also add sub-section(s) at will.

Labs working on this gene

  • National Key Laboratory of Plant Molecular Genetics, Institute of Plant Physiology and Ecology, Shanghai Institutes for Biological Sciences, Chinese Academy of Sciences, Shanghai 200032, PR China
  • State Key Laboratory Breeding Base for Zhejiang Sustainable Pest and Disease Control, Institute of Virology and Biotechnology,

Zhejiang Academy of Agricultural Science, Zhejiang 310021, PR China

  • Key Laboratories of Crop Genetics and Physiology of the Jiangsu Province and Plant Functional Genomics of the Ministry of

Education, Yangzhou University, Yangzhou 225009, PR China

References

  1. 1.0 1.1 Wang JC, Xu H, Zhu Y, Liu QQ, Cai XL. OsbZIP58, a basic leucine zipper transcription factor, regulates starch biosynthesis in rice endosperm. J Exp Bot. 2013 Aug;64(11):3453-66. doi: 10.1093/jxb/ert187. Epub 2013 Jul 11. PubMed PMID: 23846875; PubMed Central PMCID: PMC3733163.

Structured Information