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AuthorKarray, Fatma
AuthorGargouri, Mahmoud
AuthorChebaane, Asma
AuthorMhiri, Najla
AuthorMliki, Ahmed
AuthorSayadi, Sami
Available date2020-09-22T11:33:28Z
Publication Date2020-07-28
Publication NameFrontiers in Microbiology
Identifierhttp://dx.doi.org/10.3389/fmicb.2020.01622
CitationKarray F, Gargouri M, Chebaane A, Mhiri N, Mliki A and Sayadi S (2020) Climatic Aridity Gradient Modulates the Diversity of the Rhizosphere and Endosphere Bacterial Microbiomes of Opuntia ficus-indica. Front. Microbiol. 11:1622. doi: 10.3389/fmicb.2020.01622
URIhttps://www.scopus.com/inward/record.uri?partnerID=HzOxMe3b&scp=85089354523&origin=inward
URIhttp://hdl.handle.net/10576/16245
Abstract© Copyright © 2020 Karray, Gargouri, Chebaane, Mhiri, Mliki and Sayadi. Recent microbiome research has shown that soil fertility, plant-associated microbiome, and crop production can be affected by abiotic environmental parameters. The effect of aridity gradient on rhizosphere-soil (rhizosphere) and endosphere-root (endosphere) prokaryotic structure and diversity associated with cacti remain poorly investigated and understood. In the current study, next-generation sequencing approaches were used to characterize the diversity and composition of bacteria and archaea associated with the rhizosphere and endosphere of Opuntia ficus-indica spineless cacti in four bioclimatic zones (humid, semi-arid, upper-arid, and lower-arid) in Tunisia. Our findings showed that bacterial and archaeal cactus microbiomes changed in inside and outside roots and along the aridity gradient. Plant compartment and aridity gradient were the influencing factors on the differentiation of microbial communities in rhizosphere and endosphere samples. The co-occurrence correlations between increased and decreased OTUs in rhizosphere and endosphere samples and soil parameters were determined according to the aridity gradient. Blastococcus, Geodermatophilus, Pseudonocardia, Promicromonospora, and Sphingomonas were identified as prevailing hubs and were considered as specific biomarkers taxa, which could play a crucial role on the aridity stress. Overall, our findings highlighted the prominence of the climatic aridity gradient on the equilibrium and diversity of microbial community composition in the rhizosphere and endosphere of cactus.
SponsorWe thank the Tunisian authorities for the support in prickly pear tree sampling and also Dr. Fabrice Armougoum from the Mediterranean Institute of Oceanography (MIO, IRD, UM 110, 13288, Marseille, France) for his great help on microbiome analysis.
Languageen
PublisherFrontiers Media
Subjectaridity gradient
bacterial and archaeal microbiome
co-occurrence network
endosphere root
Opuntia ficus-indica
rhizosphere soil
TitleClimatic Aridity Gradient Modulates the Diversity of the Rhizosphere and Endosphere Bacterial Microbiomes of Opuntia ficus-indica
TypeArticle
Pagination1622
Volume Number11
dc.accessType Open Access


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