Journal
SOIL SCIENCE AND PLANT NUTRITION
Volume 64, Issue 3, Pages 335-341Publisher
TAYLOR & FRANCIS LTD
DOI: 10.1080/00380768.2018.1431012
Keywords
Arbuscular mycorrhizal fungi; Glomus; Retama raetam; spores
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Funding
- Scientific Cooperation FRANCE-TUNISIA 'Comite Mixte de Cooperation Universitaire' (CMCU), Partenariat Hubert Curien 'UTIQUE' project [11G0906]
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Arbuscular mycorrhizal fungi (AMF) are found in the soil of most ecosystems where they form mutualistic associations that affect plants growth. We have investigated the community structure of AMF associated to Retama raetam growing in five regions of Tunisia. The total number of spores was significantly different across sites, ranging from 633 to 1062 spores per 100g dry soil. A dominance of small spores was revealed. The large subunit region of the rDNA of AMF spores associated to the rhizosphere of R. raetam was sequenced. Sequences clustered into 13 operational taxonomic units. Phylogenetic analysis revealed that the majority of sequences were grouped within Glomeraceae and Claroideoglomeraceae families. Only two sequences were affiliated to the Scutellospora genus. These results suggest the dominance of the genus Glomus in the soil rhizosphere of R. raetam. A correlation between phylogenetic analysis, soil chemicals properties, and AMF community richness was also detected.
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