Editors' ChoicePlant biology

One Way to Avoid Pollen

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Science's STKE  11 Sep 2001:
Vol. 2001, Issue 99, pp. tw324
DOI: 10.1126/stke.2001.99.tw324

Certain types of plants encourage cross-fertilization in their populations by biochemical means--polymorphic components on the pollen grain and the stigma allow the plant to recognize and avoid responding to its own pollen. This self-incompatibility is mediated by SRK, a receptor-like kinase, on the surface of the stigma, and SCR, a protein on the surface of the pollen. Kachroo et al. have now demonstrated that SRK and SCR form a receptor-ligand pair that interacts molecularly.

A. Kachroo, C. R. Schopfer, M. E. Nasrallah, J. B. Nasrallah, Allele-specific receptor-ligand interactions in Brassica self-incompatibility. Science 293, 1824-26 (2001). [Abstract] [Full Text]

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