BcCoi1, a cytoplasmic male sterility related gene, which was isolated from flower buds of Brassica campestris ssp. chinensis Makino using the RACE technology, was characterized and submitted to the NCBI GenBank (accession no. GU263836). The gene encodes a 67.78-kD protein containing 16 leucine-rich repeats and an N-terminal F-box motif and is extremely similar to Arabidopsis thaliana Coi1 gene. The Southern blot showed that BcCoi1 belongs to a multigene family. In A. thaliana, the Coi1 gene is involved in jasmonate signaling, and Coi1 mutant displayed male sterility. In this study, qPCR results demonstrated that BcCoi1 was accumulated in stamens and was significantly higher expressed in flower organs of the maintainer line than in the CMS one. At the microsporocyte development stage, the gene was expressed at a significantly lower extent in the CMS line than in the maintainer line. This expression profile presumes that BcCoi1 plays a role in early microspore development in non-heading Chinese cabbage.
Russian Journal of Plant Physiology – Springer Journals
Published: Dec 28, 2012
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