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The rice Os01g0273800 was reported as OsYUC9 in 2012 [1] by researchers from Australia.

Annotated Information

Gene Symbol

  • Os01g0273800 <=> OsYUCCA9, OsYUC9, YUC9


  • IAA production in developing rice grains is controlled via expression of OsTAR1, OsYUC9, OsYUC11 and that IAA may be important during starch deposition in addition to its previously suggested role early in grain development.


  • OsYUC9 was expressed in endosperm.


  • Phylogenetic analysis indicated that OsYUC11 and AtYUC10 belong to a separate clade of YUCCAs, which do not have orthologues outside the Angiosperms. This clade may have evolved with a specific role in endosperm.

Labs working on this gene

  • Molecular and Cellular Biology, University of New England, Armidale, New South Wales, Australia
  • Department of Biochemistry and Molecular Biology, University of Massachusetts, Amherst, MA 01003, USA


  1. bu-Zaitoon YM, Bennett K, Normanly J, Nonhebel HM. A large increase in IAA during development of rice grains correlates with the expression of tryptophan aminotransferase OsTAR1 and a grain-specific YUCCA. Physiol Plant. 2012 Dec;146(4):487-99. doi: 10.1111/j.1399-3054.2012.01649.x. PubMed PMID: 22582989.

Structured Information