Unequal genetic redundancy of rice PISTILLATA orthologs, OsMADS2 and OsMADS4, in lodicule and stamen development.
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.
Yao
Shan-Guo
SG
Hokuriku Research Center, National Agricultural Research Center, Niigata, 943-0193 Japan.
Ohmori
Shinnosuke
S
Kimizu
Mayumi
M
Yoshida
Hitoshi
H
D029681:Arabidopsis Proteins / Q000737:chemistry*; D035264:Flowers / Q000235:genetics* / Q000254:growth & development*; D020869:Gene Expression Profiling; D018506:Gene Expression Regulation, Plant; D026161:MADS Domain Proteins / Q000737:chemistry*; D012275:Oryza / Q000235:genetics* / Q000254:growth & development*; D010940:Plant Proteins / Q000235:genetics* / Q000378:metabolism; D011485:Protein Binding; D017386:Sequence Homology, Amino Acid; D020798:Two-Hybrid System Techniques
D029681:Arabidopsis Proteins; D026161:MADS Domain Proteins; C090225:PISTILLATA protein, Arabidopsis; D010940:Plant Proteins