Journal
COMMUNICATIONS BIOLOGY
Volume 4, Issue 1, Pages -Publisher
NATURE PORTFOLIO
DOI: 10.1038/s42003-021-01826-7
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Funding
- NSF [DEB-1541496, DEB-1541548, DEB-1541539, DEB-1541538]
- Funai Overseas Scholarship
- Japanese Student Service Organization
- School of Plant Sciences at the University of Arizona
- NIH COBRE grant [P30GM103324]
- College of Agriculture and Life Sciences at the University of Arizona
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Understanding how tree diversity is structured in tropical forests by abiotic factors, climate, and biotic interactions, with seasonality playing a key role at landscape scales, researchers found that endophyte richness varies negatively with temperature seasonality. The structure and composition of endophyte communities reflect both temperature seasonality and climate, highlighting the vital role of climate-related factors in shaping the hyperdiversity of these symbionts that form the foundations of tropical forest biodiversity.
Understanding how species-rich communities persist is a foundational question in ecology. In tropical forests, tree diversity is structured by edaphic factors, climate, and biotic interactions, with seasonality playing an essential role at landscape scales: wetter and less seasonal forests typically harbor higher tree diversity than more seasonal forests. We posited that the abiotic factors shaping tree diversity extend to hyperdiverse symbionts in leaves-fungal endophytes-that influence plant health, function, and resilience to stress. Through surveys in forests across Panama that considered climate, seasonality, and covarying biotic factors, we demonstrate that endophyte richness varies negatively with temperature seasonality. Endophyte community structure and taxonomic composition reflect both temperature seasonality and climate (mean annual temperature and precipitation). Overall our findings highlight the vital role of climate-related factors in shaping the hyperdiversity of these important and little-known symbionts of the trees that, in turn, form the foundations of tropical forest biodiversity.
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