A search of Brassica SI-involved orthologs in buckwheat leads to novel buckwheat sequence identification: MLPK possibly involved in SI response
2010
Banović, B., Institute of Molecular Genetics and Genetic Engineering, Belgrade (Serbia) | Miljuš-Djukić, J.D., Institute of Molecular Genetics and Genetic Engineering, Belgrade (Serbia) | Konstantinović, M., Institute of Molecular Genetics and Genetic Engineering, Belgrade (Serbia) | Maksimović, V., Institute of Molecular Genetics and Genetic Engineering, Belgrade (Serbia)
Self-incompatibility (SI) systems, gametophytic (GSI) and sporophytic (SSI), prevent self-pollination in angiosperms. Buckwheat displays heteromorphic SSI, with pollination allowed only between different flower morphs - thrum and pin. The physiology of thrum and pin morph SI responses are entirely different, resembling homomorphic Brassica SSI and Prunus GSI responses, respectively. Considering angiosperm species may share ancestral SI genes, we examined the presence of Brassica and Prunus SI-involved gene orthologs in the buckwheat genome. We did not find evidence of SRK, SLG and SP11 Brassica or S-RNase and SFB Prunus orthologs in the buckwheat genome, but we found a Brassica MLPK ortholog. We report the partial nucleotide sequence of the buckwheat MLPK and discuss the possible implications of this finding.
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