Thompson R D, Kirch H H
Max-Planck-Institut für Züchtungsforschung, Köln, FRG.
Trends Genet. 1992 Nov;8(11):381-7. doi: 10.1016/0168-9525(92)90299-j.
In certain families of flowering plants, a self-incompatibility (SI) locus prevents self-fertilization, by a specific interaction between the S-gene product produced in the pistil and the S-gene products borne on or expressed by the male gametophyte, the pollen grain. The female S-locus gene products for two families showing different types of SI have been putatively identified as major pistil glycoproteins (the S-locus-specific glycoproteins of the Brassicaceae and the S-RNases of the Solanaceae). However, they are distinct in sequence and mode of action. The nature of the S-locus gene product borne by the pollen is still uncertain in both systems.
在某些开花植物家族中，自交不亲和（SI）位点通过雌蕊中产生的S基因产物与雄配子体（花粉粒）携带或表达的S基因产物之间的特定相互作用来阻止自花受精。已初步确定，显示不同类型自交不亲和的两个家族的雌性S位点基因产物为主要雌蕊糖蛋白（十字花科的S位点特异性糖蛋白和茄科的S核糖核酸酶）。然而，它们在序列和作用方式上有所不同。在这两个系统中，花粉携带的S位点基因产物的性质仍然不确定。
