Abdedaiem R. auteur aut IRD Rejili M. auteur aut IRD Mahdhi M. auteur aut IRD Lajudie Philippe de auteur aut IRD Mars M. auteur aut IRD text journalArticle eng text/pdf born digital access The aim of this study was to identify the major environmental factors affecting the Arbuscular Mycorrhizal Fungi (AMF) diversity and community composition in the roots of Retama raetam growing on arid ecosystems of Tunisia AM Fungi were assessed by cloning and sequencing of the AMF SSU rRNA gene and therefore checked against NCBI GenBank and MaarjAA4 database. Thirteen operational taxonomic units (OTUs) were identified in R. raetam roots and AMF community was dominated by Glomeraceae. Of the totality of OTUs, ten matched previously known virtual taxa (VTX) and 3 OTUs were treated as novel VT and grouped into 3 putative new AMF taxa (pNTX). Correlation analysis reported that high available phosphorus content and high electrical conductivity in the soil decrease AMF richness and diversity. Interestingly, Principal Component Analysis (PCA) and Monte Carlo permutation tests on Canonical Correspondence Analysis (CCA) indicated that soil physic-chemical properties such as soil total nitrogen (TN), soil-available P, EC, and soil texture affected the AMF community composition. No significant relation was found between AMF distribution and soil organic carbon (OC) and soil pH. Our findings provide insights into the nature of AMF communities colonizing R. raetam roots and help to link fungal distribution to specific soil properties, which could be exploited in the identification of a wider variety of fungal strains as potential inoculants for rehabilitation and restoration program. specialized Arbuscular mycorrhizal fungi Diversity Soil properties distribution Retama raetam Arid areas TUNISIE ZONE ARIDE 084 076 074 068 23 2 438-446 2020 1560-8530 https://www.documentation.ird.fr/hor/fdi:010077815 10.17957/ijab/15.1307 1560-8530 [F B010077815] https://www.documentation.ird.fr/hor/fdi:010077815 https://www.documentation.ird.fr/intranet/publi/2020/02/010077815.pdf Accès réservé (Intranet de l'IRD) IRD - Base Horizon / Pleins textes 2020-03-11 2024-04-22 fdi:010077815 fre