PerspectivePlant Biology

No Stigma Attached to Male Rejection

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Science  26 Nov 1999:
Vol. 286, Issue 5445, pp. 1690-1691
DOI: 10.1126/science.286.5445.1690

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Plants have evolved several elegant methods to prevent self-fertilization. For example, in many plant families the female stigma is able to immediately recognize and reject male pollen grains from the same plant. The molecular machinery of this self-pollen rejection system has now been described in commercially important Brassica species ( Schopfer et al., Stone et al.). Dickinson discusses the new findings in a Perspective.