Allele-specific receptor-ligand interactions in Brassica self-incompatibility

被引：235

作者：

Kachroo, A ^{[1
]}

Schopfer, CR ^{[1
]}

Nasrallah, ME ^{[1
]}

Nasrallah, JB ^{[1
]}

机构：

[1] Cornell Univ, Dept Plant Biol, Ithaca, NY 14853 USA

来源：

SCIENCE | 2001年 / 293卷 / 5536期

关键词：

D O I：

10.1126/science.1062509

中图分类号：

O [数理科学和化学]; P [天文学、地球科学]; Q [生物科学]; N [自然科学总论];

学科分类号：

07 ; 0710 ; 09 ;

摘要：

Genetic self-incompatibility in Brassica is determined by alleles of the transmembrane serine-threonine kinase SRK, which functions in the stigma epidermis, and of the cysteine-rich peptide SCR, which functions in pollen. Using tagged versions of SRK and SCR as well as endogenous stigma and pollen proteins, we show that SCR binds the SRK ectodomain and that this binding is allele,specific. Thus, SRK and SCR function as a receptor-Ligand pair in the recognition of self pollen. Specificity in the self-incompatibility response derives from allele-specific formation of SRK-SCR complexes at the pollen-stigma interface.

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页码：1824 / 1826

页数：3

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