Double-stranded RNA interference of a rice PI/GLO paralog, OsMADS2, uncovers its second-whorl-specific function in floral organ patterning

Genetics. 2003 Dec;165(4):2301-5.


Unlike many eudicot species, grasses have duplicated PI/GLO-like genes. Functional analysis of one of the rice PI/GLO paralogs, OsMADS2, is reported here. Our data demonstrate its essential role in lodicule development and implicate the second PI/GLO paralog, OsMADS4, to suffice for stamen specification. We provide the first evidence for differential contributions of grass PI/GLO paralogs in patterning second- and third-whorl floral organs.

Publication types

  • Comparative Study
  • Research Support, Non-U.S. Gov't

MeSH terms

  • Flowers / genetics*
  • Flowers / growth & development*
  • Gene Expression Regulation, Plant
  • Genes, Plant
  • MADS Domain Proteins / genetics*
  • MADS Domain Proteins / metabolism
  • Oryza / genetics*
  • Oryza / growth & development*
  • Plants, Genetically Modified
  • RNA Interference*
  • RNA, Double-Stranded / genetics*


  • MADS Domain Proteins
  • RNA, Double-Stranded