Journal Article

Unequal Genetic Redundancy of Rice <i>PISTILLATA</i> Orthologs, <i>OsMADS2</i> and <i>OsMADS4</i>, in Lodicule and Stamen Development

Shan-Guo Yao, Shinnosuke Ohmori, Mayumi Kimizu and Hitoshi Yoshida

in Plant and Cell Physiology

Published on behalf of Japanese Society of Plant Physiologists

Volume 49, issue 5, pages 853-857
Published in print May 2008 | ISSN: 0032-0781
Published online May 2008 | e-ISSN: 1471-9053 | DOI: http://dx.doi.org/10.1093/pcp/pcn050
Unequal Genetic Redundancy of Rice PISTILLATA Orthologs, OsMADS2 and OsMADS4, in Lodicule and Stamen Development

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  • Biochemistry
  • Molecular and Cell Biology
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Two homologs of PISTILLATA have been identified in rice: OsMADS2 and OsMADS4. However, their roles in floral organ development are controversial. Here, we demonstrate that the genes show unequal redundancy of class B function. Although OsMADS2 plays an important role in lodicule development, OsMADS4 also supports the specification of lodicule identity. In contrast, the genes are roughly equally important in stamen development. Consistent with their redundant functions, both OsMADS2 and OsMADS4 interact with the unique rice AP3 ortholog SPW1.

Keywords: Lodicule; OsMADS2; OsMADS4; Redundancy; SPW1; Stamen

Journal Article.  2918 words.  Illustrated.

Subjects: Biochemistry ; Molecular and Cell Biology ; Plant Sciences and Forestry

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