植物自交不亲和性的分子生物学进展  

Advance in molecular biology of self-incompatibility in flowering plants

作　　者：吴华清[1] 张绍铃[1] 李晓[1] 吴俊[1] 

机构地区：[1]南京农业大学园艺学院,江苏南京210095

出　　处：《南京农业大学学报》2006年第4期119-126,共8页Journal of Nanjing Agricultural University

基　　金：国家自然科学基金资助项目(30270926);教育部科技重点项目(105089)

摘　　要：自交不亲和性是植物特异性地识别并拒绝自花或亲缘关系很近的花粉的一种遗传机制,该特异性受S基因座控制。S-RNase介导的配子体型自交不亲和性在被子植物中分布最广泛,在茄科、蔷薇科和玄参科植物上研究比较深入。研究表明,雌雄双方的特异性决定因子分别是S基因座中具有多态性的核酸酶和含有F-box结构域蛋白基因,但其他修饰基因也参与其中。本文概括了该类自交不亲和性的研究现状,并根据最新研究进展就其工作模型作进一步探讨,同时简要提出今后的研究方向。Self-incompatibility （SI） is a genetically determined system for specific recognition and rejection of self-pollen and pollen from closely related plants. Recognition specificity is controlled by the S-locus. S-RNase-based gametophytic SI appears to be the most phylogenetically widespread form of SI found in the angiosperms, having been studied extensively in the Solanaceae, Rosaceae, and Scrophulariaceae. Rejection of self-pollen has been shown to be mediated by a highly polymorphic series of ribonucleases, S-RNase, in the pistil and a recently identified F-box containing protein, SLF/SFB, in the pollen. We review our present knowledge concerning the identification of temale and male S-determinant, S-RNase and SLF/SFB, respectively, as well as other components implicated in SI. In addition we discuss the working models of SI response in the light of recent advances and put torward future works in SI studies.

关 键 词：自交不亲和性 S基因座核酸酶 S基因座F-box蛋白 工作模型 

分 类 号：Q945.6[生物学—植物学]