• Castellano
  • English
  • Valenciá
Página de inicio de ReDivia
Página de la Generalitat ValenciáPágina de IVIA
View Item 
  •   ReDivia Home
  • 1.- Investigación
  • 1.1.- Artículos de revista académica
  • View Item
  •   ReDivia Home
  • 1.- Investigación
  • 1.1.- Artículos de revista académica
  • View Item
JavaScript is disabled for your browser. Some features of this site may not work without it.

Compatibility and incompatibility in S-RNase-based systems

Export
untranslatedRefworks
URI
http://hdl.handle.net/20.500.11939/5616
DOI
10.1093/aob/mcr179
Derechos de acceso
openAccess
Metadata
Show full item record
Author
McClure, Bruce; Cruz-García, Felipe; Romero, Carlos
Date
2011
Cita bibliográfica
McClure, Bruce, Cruz-Garcia, Felipe, Romero, C. (2011). Compatibility and incompatibility in S-RNase-based systems. Annals of Botany, 108(4), 647-658.
Abstract
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 mutations causing breakdown in SI have been attributed to the heteroallelic pollen effect, but a mutation in Solanum chacoense may be an exception. This has been interpreted to mean that pollen incompatibility is the default condition unless the S-locus F-box protein confers resistance to S-RNase. In Prunus, however, S-locus F-box protein gene mutations clearly cause compatibility. Conclusions Two alternative mechanisms have been proposed to explain compatibility and incompatibility: compatibility is explained either as a result of either degradation of non-self S-RNase or by its compartmentalization so that it does not have access to the pollen tube cytoplasm. These models are not necessarily mutually exclusive, but each makes different predictions about whether pollen compatibility or incompatibility is the default. As more factors required for SI are identified and characterized, it will be possible to determine the role each process plays in S-RNase-based SI.
Collections
  • 1.1.- Artículos de revista académica

Browse

All of ReDiviaCommunities & CollectionsBy Issue DateAuthorsTitlesSubjetcsCategoriesIVIA CentersThis CollectionBy Issue DateAuthorsTitlesSubjetcsCategoriesIVIA Centers

My Account

LoginRegister

Statistics

View Usage Statistics

Of interest

IVIA Open Access PolicyIntellectual property and copyrightAutoarchiveFrequently Asked Questions

Indexers

Recolectauntranslated

El contenido de este sitio está bajo una licencia Creative Commons - No comercial - Sin Obra Derivada (by-nc-nd), salvo que se indique lo contrario.