Linking belowground microbial network changes to different tolerance level towards Verticillium wilt of olive

摘要: Verticillium wilt of olive (VWO) is caused by the soilborne fungal pathogen dahliae. One best VWO management measures use tolerant/resistant cultivars. Knowledge on olive-associated microbiome and its potential relationship with tolerance to biotic constraints almost null. The aims this work are (1) describe structure, functionality, co-occurrence interactions belowground (root endosphere rhizosphere) microbial communities two cultivars qualified as tolerant (Frantoio) susceptible (Picual) VWO, (2) assess whether these contribute their differential disease susceptibility level. Minor differences in alpha beta diversities root-associated microbiota were detected between regardless they inoculated or not defoliating pathotype V. Nevertheless, significant found taxonomic composition non-inoculated plants’ communities, “Frantoio” showing a higher abundance beneficial genera contrast “Picual” that exhibited major deleterious genera. Upon inoculation dahliae, changes at level mostly Picual plants. Relevant topological alterations observed communities’ after inoculation, both structural functional level, positive/negative edges ratio. In root endosphere, Frantoio switched highly connected low modularized networks, while showed sharply different behavior. rhizosphere, dahliae only irrupted networks very similar introduction did provoke structure functionality. However, notable response inoculation. This phenomenon was more evident communities. Thus, correlation modifications microhabitat susceptibility/tolerance found. Moreover, irruption suggests stronger impact cultivar upon Our results suggest may explain, least partially, tested