Hierarchical spatial sampling reveals factors influencing arbuscular mycorrhizal fungus diversity in Côte d'Ivoire cocoa plantations.

Détails

Ressource 1Télécharger: Rincon 2021 Mycorrhiza.pdf (6709.75 [Ko])
Etat: Public
Version: Final published version
Licence: CC BY 4.0
ID Serval
serval:BIB_03486670277A
Type
Article: article d'un périodique ou d'un magazine.
Collection
Publications
Institution
Titre
Hierarchical spatial sampling reveals factors influencing arbuscular mycorrhizal fungus diversity in Côte d'Ivoire cocoa plantations.
Périodique
Mycorrhiza
Auteur(s)
Rincón C., Droh G., Villard L., Masclaux F.G., N'guetta A., Zeze A., Sanders I.R.
ISSN
1432-1890 (Electronic)
ISSN-L
0940-6360
Statut éditorial
Publié
Date de publication
05/2021
Peer-reviewed
Oui
Volume
31
Numéro
3
Pages
289-300
Langue
anglais
Notes
Publication types: Journal Article
Publication Status: ppublish
Résumé
While many molecular studies have documented arbuscular mycorrhizal fungi (AMF) communities in temperate ecosystems, very few studies exist in which molecular techniques have been used to study tropical AMF communities. Understanding the composition of AMF communities in tropical areas gains special relevance as crop productivity in typically low fertility tropical soils can be improved with the use of AMF. We used a hierarchical sampling approach in which we sampled soil from cocoa (Theobroma cacao L.) plantations nested in localities, and in which localities were nested within each of three regions of Côte d'Ivoire. This sampling strategy, combined with 18S rRNA gene sequencing and a dedicated de novo OTU-picking model, allowed us to study AMF community composition and how it is influenced at different geographical scales and across environmental gradients. Several factors, including pH, influenced overall AMF alpha diversity and differential abundance of specific taxa and families of the Glomeromycotina. Assemblages and diversity metrics at the local scale did not reliably predict those at regional scales. The amount of variation explained by soil, climate, and geography variables left a large proportion of the variance to be explained by other processes, likely happening at smaller scales than the ones considered in this study. Gaining a better understanding of processes involved in shaping tropical AMF community composition and AMF establishment are much needed and could allow for the development of sustainable, productive tropical agroecosystems.
Mots-clé
Cacao, Cote d'Ivoire, Ecosystem, Mycorrhizae/genetics, Soil, Soil Microbiology, Arbuscular mycorrhizal fungi, Cocoa, Community composition, Diversity
Pubmed
Web of science
Open Access
Oui
Création de la notice
09/03/2021 14:30
Dernière modification de la notice
14/05/2021 7:08
Données d'usage