Functional delineation of rice MADS29 reveals its role in embryo and endosperm development by affecting hormone homeostasis.

ABSTRACT: Rice MADS29 has recently been reported to cause programmed cell death of maternal tissues, the nucellus, and the nucellar projection during early stages of seed development. However, analyses involving OsMADS29 protein expression domains and characterization of OsMADS29 gain-of-function and knockdown phenotypes revealed novel aspects of its function in maintaining hormone homeostasis, which may have a role in the development of embryo and plastid differentiation and starch filling in endosperm cells. The MADS29 transcripts accumulated to high levels soon after fertilization; however, protein accumulation was found to be delayed by at least 4 days. Immunolocalization studies revealed that the protein accumulated initially in the dorsal-vascular trace and the outer layers of endosperm, and s

SUBMITTER: Nayar S 

PROVIDER: S-EPMC3808311 | biostudies-literature | 2013 Nov

REPOSITORIES: biostudies-literature