文献类型：期刊文章

作　　者：赖钊[1] 崔海洋[1] 杨慧君[1] 薛勇彪[1]

机构地区：[1]中国科学院发育生物学研究所植物遗传学和发育生物学实验室,中国北京100080

出　　处：《Developmental and Reproductive Biology》

年　　份：1999

卷　　号：8

期　　号：2

起止页码：65-70

语　　种：中文

收录情况：普通刊

摘　　要：Fertilization in flowering plants is completed through several recognitionevents, and the first of which is the recognition of pollen by pistil of female reproductivetissue. Self-incompatibility (SI) is an intraspecific reproductive barrier to prevent selfferitilization and widely distributed in flowering plants. In many species, SI shows simplegenetics and is controlled by a single multi-allelic locus, called the S locus. In gametophyticSI (GSI) exemplified by the Solanaceae, Scrophulariaceae and Rosaceae, a class ofribonucleases, called S RNases, have been shown to mediate the stylar expression of SI butnot the pollen expression of SI. The latter appears to be determined by a gene differentfrom those encoding S RNases, often referred to as pollen S gene. The pollen S gene is thecrucial missing part in understanding the biochemical and molecular mechanisms of self andnon-self pollen recognition in flowering plants. Recent genetic analysis of mutationsaffecting the pollen expression of SI has suggested a possible model of how the pollen S geneinteracts with S RNases to achieve self and non-self pollen recognition. Furthermore, wewill present two approaches, S-locus directed transposon tagging and map-based cloning, forcloning the pollen S in Antirrhinum.

关 键 词：SELF-INCOMPATIBILITY S RNases  pollen S gene  

分 类 号：Q944.44[植物生产类]