How far are we from unravelling self-incompatibility in grasses?

被引:52
作者
Yang, Bicheng [1 ,2 ,3 ]
Thorogood, Danny [2 ]
Armstead, Ian [2 ]
Barth, Susanne [1 ]
机构
[1] Teagasc Crops Res Ctr, Oak Pk, Carlow, Ireland
[2] Inst Grassland & Environm Res, Aberystwyth SY23 3EB, Ceredigion, Wales
[3] Univ Birmingham, Sch Biosci, Birmingham B15 2TT, W Midlands, England
关键词
comparative mapping; evolution; gametophytic; grasses; self-incompatibility; sporophytic;
D O I
10.1111/j.1469-8137.2008.02421.x
中图分类号
Q94 [植物学];
学科分类号
071001 ;
摘要
The genetic and physiological mechanisms involved in limiting self-fertilization in angiosperms, referred to as self-incompatibility (SI), have significant effects on population structure and have potential diversification and evolutionary consequences. Up to now, details of the underlying genetic control and physiological basis of SI have been elucidated in two different gametophytic SI (GSI) systems, the S-RNase SI and the Papaver SI systems, and the sporophytic SI (SSI) system (Brassica). In the grass family (Poaceae), which contains all the cereal and major forage crops, SI has been known for half a century to be controlled gametophytically by two multiallelic and independent loci, S and Z. But still none of the gene products for S and Z is known and only limited information on related biochemical responses is available. Here we compare current knowledge of grass SI with that of other well-characterized SI systems and speculate about the relationship between SSI and grass SI. Additionally, we discuss comparative mapping as a tool for the further investigation of grass SI.
引用
收藏
页码:740 / 753
页数:14
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