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首页> 外文期刊>Journal of Experimental Botany >Molecular bases and evolutionary dynamics of self-incompatibility in the Pyrinae (Rosaceae).
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Molecular bases and evolutionary dynamics of self-incompatibility in the Pyrinae (Rosaceae).

机译：吡喃（Rosaceae）中自相相形的分子碱和进化动态。

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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 multiple pollen S genes in the GSI system of Pyrinae, still awaiting experimental confirmation, opens up new perspectives to our understanding of the evolution of S haplotypes, and of the evolution of S-RNase-based GSI within the Rosaceae family. Whereas S-locus genes encode the players determining self-recognition, pollen rejection in the Pyrinae seems to involve a complex cascade of downstream cellular events with significant similarities to programmed cell death.
机译：在过去的二十年中，苹果和梨等亚毒素吡喃（葡萄质植物（Rosaceae）等种类的杂种自相残象（GSI）系统的分子基碱。 S-LOCU基因的表征和花粉接受或排斥的机制是主要兴趣的主题。除了单一雌激素侧的决定因素外，S-RNase，多种相关的S-LOCUS F箱基因似乎参与了花粉的特异性的测定。在这里，我们收集并审查GSI在Pyrinae的领域。我们强调最近有助于揭示吡喃的S-LOCUS结构的基因组数据，并讨论它们与为氏氏和茄科素提出的自我识别模型的一致性。实验数据表明，控制Parren-Pistil识别特异性的机制可能与培养的诱饵（Solanaceae）提出的合作的“非自我”识别系统相适合，而它呈现出与仔细物种呈现的机制相关的相关差异相关属Prunus，其使用单一进化的不同F型箱基因作为花粉的决定因素。多种花粉S基因在Pylinae的GSI系统中可能涉及，仍在等待实验证实，对我们对S单倍型的演变和枸杞内的S-RNase的GSI的演变进行了新的视角。而S-Locus基因编码确定自我识别的球员，Pylinae中的花粉抑制似乎涉及与编程细胞死亡的显着相似性的复杂的下游细胞事件级联。

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