Parallel evolution of dominant pistil-side self-incompatibility suppressors in Arabidopsis
| Autor: | Hiroko Shimosato-Asano, Mitsuru Kakita, Seiji Takayama, Megumi Iwano, Sota Fujii, Takashi Kitanishi |
|---|---|
| Jazyk: | angličtina |
| Rok vydání: | 2020 |
| Předmět: |
0106 biological sciences
0301 basic medicine Inverted repeat Inverted Repeat Sequences Science Arabidopsis General Physics and Astronomy Flowers 01 natural sciences Article General Biochemistry Genetics and Molecular Biology Evolution Molecular Self incompatability 03 medical and health sciences Gene Expression Regulation Plant Molecular evolution Arabidopsis thaliana Allele lcsh:Science Gene Alleles Genetics Multidisciplinary biology Arabidopsis Proteins Gene silencing Self-Incompatibility in Flowering Plants Selfing food and beverages General Chemistry biology.organism_classification 030104 developmental biology Brassicaceae lcsh:Q 010606 plant biology & botany |
| Zdroj: | Nature Communications, Vol 11, Iss 1, Pp 1-9 (2020) Nature Communications |
| ISSN: | 2041-1723 |
| Popis: | Selfing is a frequent evolutionary trend in angiosperms, and is a suitable model for studying the recurrent patterns underlying adaptive evolution. Many plants avoid self-fertilization by physiological processes referred to as self-incompatibility (SI). In the Brassicaceae, direct and specific interactions between the male ligand SP11/SCR and the female receptor kinase SRK are required for the SI response. Although Arabidopsis thaliana acquired autogamy through loss of these genes, molecular evolution contributed to the spread of self-compatibility alleles requires further investigation. We show here that in this species, dominant SRK silencing genes have evolved at least twice. Different inverted repeat sequences were found in the relic SRK region of the Col-0 and C24 strains. Both types of inverted repeats suppress the functional SRK sequence in a dominant fashion with different target specificities. It is possible that these dominant suppressors of SI contributed to the rapid fixation of self-compatibility in A. thaliana. In Brassicaceae, interaction between the pollen-derived peptide ligand SP11 and the pistil-expressed receptor kinase SRK leads to self-incompatibility. Here the authors provide evidence that in Arabidopsis dominant self-compatibility inducers evolved at least twice via insertion of inverted repeats in the SRK locus. |
| Databáze: | OpenAIRE |
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