Molecular bases and evolutionary dynamics of self-incompatibility in the Pyrinae (Rosaceae)

Journal of Experimental Botany
Paolo De FranceschiJ Sanzol

Abstract

The molecular bases of the gametophytic self-incompatibility (GSI) system of species of the subtribe Pyrinae (Rosaceae), such as apple and pear, have been widely studied in the last two decades. The characterization of S-locus genes and of the mechanisms underlying pollen acceptance or rejection have been topics of major interest. Besides the single pistil-side S determinant, the S-RNase, multiple related S-locus F-box genes seem to be involved in the determination of pollen S specificity. Here, we collect and review the state of the art of GSI in the Pyrinae. We emphasize recent genomic data that have contributed to unveiling the S-locus structure of the Pyrinae, and discuss their consistency with the models of self-recognition that have been proposed for Prunus and the Solanaceae. Experimental data suggest that the mechanism controlling pollen-pistil recognition specificity of the Pyrinae might fit well with the collaborative 'non-self' recognition system proposed for Petunia (Solanaceae), whereas it presents relevant differences with the mechanism exhibited by the species of the closely related genus Prunus, which uses a single evolutionarily divergent F-box gene as the pollen S determinant. The possible involvement of multi...Continue Reading

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Citations

Feb 1, 2014·Molecular Breeding : New Strategies in Plant Improvement·Nobuko MaseHiroyuki Iketani
Mar 5, 2016·Molecular Breeding : New Strategies in Plant Improvement·Bjarne LarsenCarsten Pedersen
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Mar 12, 2021·Plant Science : an International Journal of Experimental Plant Biology·Chuanbao WuWei Li
Jul 13, 2019·Trends in Plant Science·Amandine CornilleIsabel Roldán-Ruiz

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