title: Self/non-self discrimination in angiosperm self-incompatibility.
abstract: Self-incompatibility (SI) in angiosperms prevents inbreeding and promotes outcrossing to generate genetic diversity. In many angiosperms, self/non-self recognition in SI is accomplished by male-specificity and female-specificity determinants (S-determinants), encoded at the S-locus. Recent studies using genetic, molecular biological and biochemical approaches have revealed that angiosperms utilize diverse self/non-self discrimination systems, which can be classified into two fundamentally different systems, self-recognition and non-self recognition systems. The self-recognition system, adopted by Brassicaceae and Papaveraceae, depends on a specific interaction between male and female S-determinants derived from the same S-haplotype. The non-self recognition system, found in Solanaceae, depends on non-self (different S-haplotype)-specific interaction between male and female S-determinants, and the male S-determinant genes are duplicated to recognize diverse non-self female S-determinants.
authors.affiliation: Graduate School of Biological Sciences, Nara Institute of Science and Technology, 8916-5 Takayama, Ikoma 630-0192, Japan. m-iwano@bs.naist.jp
authors.forename: Megumi
authors.initials: M
authors.lastname: Iwano
authors.forename: Seiji
authors.initials: S
authors.lastname: Takayama
mesh_terms: D019684:Magnoliopsida / Q000502:physiology*; D008954:Models, Biological; D060436:Self-Incompatibility in Flowering Plants / Q000502:physiology*