Syracuse

Host species dominates over landscape structure in shaping foliar fungal communities

Archive ouverte

Fort, Thomas | Robin, Cécile | Vacher, Corinne

Edité par CCSD -

Abstract Landscape structure plays a major role in ecosystem functioning as it influences species dynamics, including that of plant herbivores, pathogens and their natural antagonists. Here we hypothesized that the presence of forest patches within an agricultural matrix influences foliar fungal communities by altering the local species pool and/or the microclimate near the edges. We tested this hypothesis in a mosaic landscape composed of forests and vineyards. Leaves and bioaerosols were sampled along three forest-vineyard gradients. Fungal communities were characterized using a metabarcoding approach (Illumina sequencing of the ITS2 marker). Our results showed that foliar fungal communities significantly differ between plant species. They also significantly differ from those of the surrounding atmosphere. In contrast to our hypothesis, the landscape structure (proximity to the forest edge) did not influence the composition and diversity of foliar fungal communities in vineyards.
AbstractLandscape structure plays a major role in ecosystem functioning as it influences species dynamics, including that of plant herbivores, pathogens and their natural antagonists. Here we hypothesized that the presence of forest patches within an agricultural matrix influences foliar fungal communities by altering the local species pool and/or the microclimate near the edges. We tested this hypothesis in a mosaic landscape composed of forests and vineyards. Leaves and bioaerosols were sampled along three forest-vineyard gradients. Fungal communities were characterized using a metabarcoding approach (Illumina sequencing of the ITS2 marker). Our results showed that foliar fungal communities significantly differ between plant species. They also significantly differ from those of the surrounding atmosphere. In contrast to our hypothesis, the landscape structure (proximity to the forest edge) did not influence the composition and diversity of foliar fungal communities in vineyards.. Host species dominates over landscape structure in shaping foliar fungal communities. 10. International symposium on phyllosphere microbiology

• Description
• Sujet/Public
• Outil
• Outil d'anticipation
• Mémoire et thèse
• Gestion