An important unanswered question in the understanding of plant strategies is the extent to which leaf and root microbial communities contribute to tropical tree species functioning. Leaves and roots of tropical tree species harbor taxonomically diverse bacterial and fungi assemblages which enhance plant growth and performance by increasing nutrient and water supply and resistance to stress. Water excess or shortage, found in seasonally flooded (SF) forests in the Amazon basin, has been overlooked as being an important plant stressor in these particular habitats. Few studies have linked the ecophysiological functioning with the microbial composition of SF tropical tree seedlings. Our objective is to answer how functional traits are linked to the diversity and composition of leaf and root associated microbial communities in SF tree seedlings. We investigated 13 leaf and root functional traits, in 70 individuals belonging to seven tropical 1-year old SF tree seedlings. Seedlings were sampled exclusively in the seasonally flooded forests of French Guiana. The investigation of the diversity and composition of leaf and root associated microbial communities was conducted using ITS2 and 16S high-throughput sequencing. This study will confer robust knowledge of SF tropical forests through the lens of their microbial composition and functional traits syndrome.< Leer menos