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Pollen recognition and rejection during the sporophytic self-incompatibility response : Brassica and beyond / Simon John Hiscock (2003)

Public Citation est un tiré à part de 8 (12) - 12/2003 (Trends in Plant science) Titre : Pollen recognition and rejection during the sporophytic self-incompatibility response : Brassica and beyond Type de document : Tiré à part de revue Auteurs : Simon John Hiscock ; Stephanie Mac Innis Année de publication : 2003 Importance : 606-613 Langues : Anglais (eng) Catégories : [CBNPMP-Thématique] Régime et stratégie de reproduction (allogamie, autogamie, apomixie, reproduction asexué) Mots-clés : Brassica Résumé : Many hermaphrodite flowering plants avoid self-fertilization through genetic systems of self-incompatibility (SI). SI allows a plant to recognize and to reject self or self-related pollen, thereby preserving its ovules for outcrossing. Genes situated at the S-locus encode the 'male' (pollen) and 'female' (pistil) recognition determinants of SI. In sporophytic SI (SSI) the male determinant is expressed in the diploid anther, therefore haploid pollen grains behave with a diploid S phenotype. In Brassica, the male and the female determinants of SSI have been identified as a peptide ligand and its cognate receptor, respectively, and recent studies have identified downstream signalling molecules involved in pollen rejection. It now needs to be established whether the Brassica mechanism is universal in species with SSI, or unique to the Brassicaceae. Lien pérenne : DOI : 10.1016/j.tplants.2003.10.007 Permalink : https://biblio.cbnpmp.fr/index.php?lvl=notice_display&id=131234 Hiscock, Simon John, Mac Innis, Stephanie 2003 Pollen recognition and rejection during the sporophytic self-incompatibility response : Brassica and beyond. Trends in Plant science, 8(12) : 606-613.

Exemplaires (1)

Code-barres	Cote	Support	Localisation	Section	Disponibilité
13741	Hiscock	Tiré à part	Centre de documentation	Tirés à part	Consultable

The diversity of self-incompatibility systems in flowering plants / Simon John Hiscock (2003)

Public Citation est un tiré à part de 5 - 2003 (Plant biology) Titre : The diversity of self-incompatibility systems in flowering plants Type de document : Tiré à part de revue Auteurs : Simon John Hiscock ; Stephanie Mac Innis Année de publication : 2003 Importance : 23-32 Langues : Anglais (eng) Catégories : [CBNPMP-Thématique] Biologie de la reproduction Résumé : Flowering plants are the most successful group of land plants and dominate the earth's vegetation with around 300 000 species. This success is, in part, the consequence of a set of unique reproductive innovations that evolved with the flower. Most notable of these innovations were the closed carpel and double fertilization. Closed carpels permitted the evolution of effective mechanisms for pollen selection and discrimination, while double fertilization leading to endosperm formation allowed for more efficient utilization of resources because reserves are only allocated to the seed after fertilization. This review will focus on the most important and best understood mechanism of pollen discrimination, self-incompatibility (SI), a genetically determined pollen recognition system that prevents self-fertilization and fertilization by other individuals with the same incompatibility phenotype. In recent years much progress has been made towards elucidating the molecular mechanisms of SI operating in three distinct SI systems found in the Brassicaceae, Solanaceae and Papaveraceae, respectively. More recent molecular data obtained from the Poaceae, Convolvulaceae and Asteraceae, however, suggest that other molecular mechanisms of SI exist. A survey of classical genetic studies of SI predicts yet further potential molecular mechanisms of SI. We discuss the evolutionary implications of this apparent diversity in molecular pathways leading to SI and stress the need for more molecular studies of different SI systems. Lien pérenne : DOI : 10.1055/s-2003-37981 Permalink : https://biblio.cbnpmp.fr/index.php?lvl=notice_display&id=131232 Hiscock, Simon John, Mac Innis, Stephanie 2003 The diversity of self-incompatibility systems in flowering plants. Plant biology, 5 : 23-32.

Exemplaires (1)

Code-barres	Cote	Support	Localisation	Section	Disponibilité
13739	Hiscock	Tiré à part	Centre de documentation	Tirés à part	Consultable