Recognition and rejection of self in plant reproduction.
Plant self-incompatibility (SI) systems are unique among self/nonself recognition systems in being based on the recognition of self rather than nonself. SI in crucifer species is controlled by highly polymorphic and co-evolving genes linked in a complex. Self recognition is based on allele-specific interactions between stigma receptors and pollen ligands that result in the arrest of pollen tube development. Commonalities and differences between SI and other self/nonself discrimination systems are discussed.
Nasrallah
June B
JB
Department of Plant Biology, Cornell University, Ithaca, NY 14853, USA. jbn2@cornell.edu
D000483:Alleles; D000818:Animals; D005075:Biological Evolution; D019607:Brassicaceae / Q000235:genetics / Q000502:physiology*; D017343:Genes, Plant; D008024:Ligands; D019441:Plant Epidermis / Q000378:metabolism; D018521:Plant Physiological Phenomena; D010940:Plant Proteins / Q000235:genetics / Q000378:metabolism*; D018514:Plant Structures / Q000502:physiology; D011058:Pollen / Q000502:physiology; D011110:Polymorphism, Genetic; D011494:Protein Kinases / Q000235:genetics / Q000378:metabolism*; D012098:Reproduction
D008024:Ligands; D010940:Plant Proteins; C401308:SCR protein, Brassica oleracea; D011494:Protein Kinases; C079832:S-receptor kinase