Drought tolerance traits in Neotropical trees correlate with the composition of phyllosphere fungal communities - Archive ouverte HAL Accéder directement au contenu
Article Dans Une Revue Phytobiomes Journal Année : 2023

Drought tolerance traits in Neotropical trees correlate with the composition of phyllosphere fungal communities

Sabrina Coste
Sylvain Delzon
Marc Buée
Damien Bonal
  • Fonction : Auteur
Heidy Schimann
Corinne Vacher

Résumé

Plant-associated microorganisms have shown to aid plants in coping with drought. However, the underlying mechanisms are poorly understood and there is uncertainty regarding which microbial taxa and functions are mostly involved. We explored these issues in Neotropical rainforests and identified foliar microorganisms that may play a role in drought tolerance of trees. Our objectives were to (1) test the relationship between drought tolerance traits in Neotropical trees and the diversity and composition of their foliar fungal and bacterial communities and (2) identify leaf microbial taxa positively or negatively associated with drought tolerance traits. Our results showed that the composition of leaf fungal communities, but not bacterial communities, was related to drought tolerance. We identified 27 fungal Amplicon Sequence Variants (ASVs) whose relative abundance co-varied with drought tolerance traits. Most variants were assigned to fungal clades often described as plant pathogens and increased in abundance with drought susceptibility. This greater relative abundance of leaf pathogens in the most drought-susceptible trees might increase their vulnerability to climate change. Moreover, we identified the Strelitziana and Ochroconis fungal genera as potential candidates for future culture-dependent studies aimed at understanding and improving drought tolerance in Neotropical forests.

Dates et versions

hal-03689880 , version 1 (07-06-2022)

Identifiants

Citer

Marine Cambon, Dinïa Cartry, Emilie Chancerel, Camille Ziegler, Sebastien Levionnois, et al.. Drought tolerance traits in Neotropical trees correlate with the composition of phyllosphere fungal communities. Phytobiomes Journal, 2023, 7 (2), pp.244-253. ⟨10.1094/PBIOMES-04-22-0023-R⟩. ⟨hal-03689880⟩
234 Consultations
0 Téléchargements

Altmetric

Partager

Gmail Facebook X LinkedIn More