Consequences of Segregation and Genetic Exchange on Adaptability in Arbuscular Mycorrhizal Fungi (AMF)

Détails

ID Serval
serval:BIB_EEACA92C8E8C
Type
Partie de livre
Sous-type
Chapitre: chapitre ou section
Collection
Publications
Titre
Consequences of Segregation and Genetic Exchange on Adaptability in Arbuscular Mycorrhizal Fungi (AMF)
Titre du livre
Evolutionary Biology: Exobiology and Evolutionary Mechanisms
Auteur(s)
Angelard  C., Sanders  I.R.
Editeur
Springer
Lieu d'édition
Heidelberg
ISBN
978-3-642-38211-6
Statut éditorial
Publié
Date de publication
2013
Editeur scientifique
Pontarotti P.
Pages
231-243
Langue
anglais
Notes
CNRS UMR 6632, Labo. Evolution Biologique et, Université d'Aix-Marseille
Résumé
Arbuscular mycorrhizal fungi (AMF) form symbioses with the majority of land plants, improving the nutrition and productivity of plants. the fungi are coenocytic, grow clonally, and no sexual stage in their life cycle is known. Recent evidence sugggest that AMF are hetrokaryotes, i.e., that genetically different nuclei coexist within a single cytoplasm. In this chapter, we present the last studies that have investigated the ecological and evolutionary consequences of an AMF heterokyryotic system on both sides of the symbiosis: Fungi and plants. We first present two important mechanisms, namely segregation and genetic exchange, two processes directly related to the heterokaryotic state od AMF. We then present the consequences of segregation and genetic exchange on AMF/plant interactions. Finally, we discuss the role of heterokyryosis in the enhancement of AMF adaptability and hoe AMF have maintained gnetically different nuclei.
Création de la notice
10/03/2016 14:04
Dernière modification de la notice
20/08/2019 17:16
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