Compatibility and incompatibility in S-RNase-based systems
Por:
McClure B., Cruz-García F., Romero C.
Publicada:
1 sep 2011
Categoría:
Plant Science
Resumen:
Background S-RNase-based self-incompatibility (SI) occurs in the Solanaceae, Rosaceae and Plantaginaceae. In all three families, compatibility is controlled by a polymorphic S-locus encoding at least two genes. S-RNases determine the specificity of pollen rejection in the pistil, and S-locus F-box proteins fulfill this function in pollen. S-RNases are thought to function as S-specific cytotoxins as well as recognition proteins. Thus, incompatibility results from the cytotoxic activity of S-RNase, while compatible pollen tubes evade S-RNase cytotoxicity. Scope The S-specificity determinants are known, but many questions remain. In this review, the genetics of SI are introduced and the characteristics of S-RNases and pollen F-box proteins are briefly described. A variety of modifier genes also required for SI are also reviewed. Mutations affecting compatibility in pollen are especially important for defining models of compatibility and incompatibility. In Solanaceae, pollen-side mutation
Filiaciones:
Univ Nacl Autonoma Mexico, Dept Bioquim, Fac Quim, Mexico City 04510, DF, Mexico
Department of Biochemistry, Interdisciplinary Plant Group, University of Missouri, Columbia, MO 65211, United States
Instituto Valenciano de Investigaciones Agrarias (IVIA), Apartado Oficial, 46113 Moncada, Valencia, Spain
All Open Access, Bronze
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