Fungal communities living within leaves of native Hawaiian dicots are structured by landscape-scale variables as well as by host plants
| Autor: | Anthony S. Amend, Brian A. Perry, John L. Darcy, Geoffrey Zahn, Sean O. I. Swift, Gerald M. Cobian |
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| Rok vydání: | 2019 |
| Předmět: |
0106 biological sciences
0303 health sciences Scale (anatomy) geography geography.geographical_feature_category Phylogenetic tree biology Ecology fungi Community structure food and beverages Context (language use) 15. Life on land biology.organism_classification 010603 evolutionary biology 01 natural sciences Endophyte Plant use of endophytic fungi in defense 03 medical and health sciences Phylogenetics Archipelago 030304 developmental biology |
| Popis: | A phylogenetically diverse array of fungi live within healthy leaf tissue of dicotyledonous plants. Many studies have examined these endophytes within a single plant species and/or at small spatial scales, but landscape-scale variables that determine their community composition are not well understood, either across geographic space, across climatic conditions, or in the context of host plant phylogeny. Here, we evaluate the contributions of these variables to endophyte beta diversity using a survey of foliar endophytic fungi in native Hawaiian dicots sampled across the Hawaiian archipelago. We used Illumina technology to sequence fungal ITS1 amplicons to characterize foliar endophyte communities across five islands and 80 host plant genera. We found that communities of foliar endophytic fungi showed strong geographic structuring between distances of seven and 36 km. Endophyte community structure was most strongly associated with host plant phylogeny and evapotranspiration, and was also significantly associated with NDVI, elevation, and solar radiation. Additionally, our bipartite network analysis revealed that the five islands we sampled each harbored significantly specialized endophyte communities. These results demonstrate how the interaction of factors at large and small spatial and phylogenetic scales shape fungal symbiont communities. |
| Databáze: | OpenAIRE |
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