Full establishment of arbuscular mycorrhizal symbiosis in rice occurs independently of enzymatic jasmonate biosynthesis.

Détails

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Etat: Public
Version: de l'auteur
ID Serval
serval:BIB_D733A82CC0CA
Type
Article: article d'un périodique ou d'un magazine.
Collection
Publications
Institution
Titre
Full establishment of arbuscular mycorrhizal symbiosis in rice occurs independently of enzymatic jasmonate biosynthesis.
Périodique
Plos One
Auteur(s)
Gutjahr C., Siegler H., Haga K., Iino M., Paszkowski U.
ISSN
1932-6203 (Electronic)
ISSN-L
1932-6203
Statut éditorial
Publié
Date de publication
2015
Volume
10
Numéro
4
Pages
e0123422
Langue
anglais
Notes
Publication types: Journal Article ; Research Support, Non-U.S. Gov't Publication Status: epublish
Résumé
Development of the mutualistic arbuscular mycorrhiza (AM) symbiosis between most land plants and fungi of the Glomeromycota is regulated by phytohormones. The role of jasmonate (JA) in AM colonization has been investigated in the dicotyledons Medicago truncatula, tomato and Nicotiana attenuata and contradicting results have been obtained with respect to a neutral, promotive or inhibitory effect of JA on AM colonization. Furthermore, it is currently unknown whether JA plays a role in AM colonization of monocotyledonous roots. Therefore we examined whether JA biosynthesis is required for AM colonization of the monocot rice. To this end we employed the rice mutant constitutive photomorphogenesis 2 (cpm2), which is deficient in JA biosynthesis. Through a time course experiment the amount and morphology of fungal colonization did not differ between wild-type and cpm2 roots. Furthermore, no significant difference in the expression of AM marker genes was detected between wild type and cpm2. However, treatment of wild-type roots with 50 μM JA lead to a decrease of AM colonization and this was correlated with induction of the defense gene PR4. These results indicate that JA is not required for AM colonization of rice but high levels of JA in the roots suppress AM development likely through the induction of defense.
Mots-clé
Cyclopentanes/metabolism, Genes, Plant, Glomeromycota/metabolism, Intramolecular Oxidoreductases/genetics, Intramolecular Oxidoreductases/metabolism, Mutation, Mycorrhizae/metabolism, Oryza/genetics, Oryza/metabolism, Oxylipins/metabolism, Plant Growth Regulators/metabolism, Plant Proteins/genetics, Plant Proteins/metabolism, Symbiosis/genetics, Symbiosis/physiology
Pubmed
Web of science
Open Access
Oui
Création de la notice
12/05/2015 13:34
Dernière modification de la notice
20/08/2019 15:56
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