Os02g0274000

The rice gene Os02g0274000 was reported as Rf2 in 2011 by researchers from Japan and Australia.

Annotated Information

Gene Symbol

• Os02g0274000 <=> Rf2, OsRf2

Function

• Rf2 encodes a protein consisting of 152 amino acids with a glycine-rich domain.
• The fertility of cytoplasmic male sterility (CMS) plants is restored in the presence of a nuclear-encoded fertility restorer (Rf) gene. In Lead Rice-type CMS, discovered in the indica variety ‘Lead Rice’, fertility of the CMS plant is restored by the single nuclear-encoded gene Rf2 in a gametophytic manner.

Mutation

• Replacement of isoleucine by threonine at amino acid 78 of the RF2 protein was considered to be the cause of functional loss in the rf2 allele.

Expression

• Expression of Rf2 mRNA was detected in developing and mature anthers.

Sublocalization

• An RF2–GFP fusion was shown to be targeted to mitochondria.

Evolution

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Labs working on this gene

• Present address: Agricultural Research Institute, HOKUREN Federation of Agricultural Cooperatives, Higashi-5, Kita-15, Nagamura, Hokkaido 069-1317, Japan.
• Present address: Australian Research Council, Centre of Excellence in Computer Systems Biology, University of Western Australia, 35 Stirling Highway, Crawley 6009, WA, Australia.