A first characterization of the leaflet endophytic prokaryotic community in cycads

Le résumé fourni par la source

Studies to describe prokaryotic communities in cycad species have a long history, addressing different methods and techniques to unveil the existing biotic interactions. To date, the interest in describing the microbial community in cycads species continues, mainly focusing on the coralloid root endosphere and rhizosphere microbiomes, particularly emphasizing in its predominant biotic interaction with Cyanobacteria. No studies about the leaf endosphere microbiome composition on cycads has been carried out. In this study, we focused on the microbiome evaluation of six Mexican Dioon species to get insights in the microbiome composition across different biogeographic regions in Mexico, as well as the effect of the environmental variation in the alpha and beta diversities. Overall, we observed that prokaryotic endophytes alpha diversity showed a clear association with genetic and demographic reports for most Dioon species analyzed. Also, a strong association of microbiome diversity patterns and environmental variation experienced by Dioon hosts was found, in line with the historical aridification processes that could drive actual genetic diversity in Dioon species and which possible influence the present-day composition and diversity of cycads leaf endosphere microbiomes.

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