期刊
ECOLOGY LETTERS
卷 17, 期 9, 页码 1086-1093出版社
WILEY
DOI: 10.1111/ele.12311
关键词
Latitude; phylum; precipitation; regular septa; snowball earth events; soil; temperature; traits; zoospore
类别
资金
- Direct For Biological Sciences [1256896] Funding Source: National Science Foundation
- Directorate For Geosciences [1411942] Funding Source: National Science Foundation
- Division Of Earth Sciences [1411942] Funding Source: National Science Foundation
- Division Of Environmental Biology [1256896] Funding Source: National Science Foundation
Although fungal communities are known to vary along latitudinal gradients, mechanisms underlying this pattern are not well-understood. We used high-throughput sequencing to examine the large-scale distributions of soil fungi and their relation to evolutionary history. We tested the Tropical Conservatism Hypothesis, which predicts that ancestral fungal groups should be more restricted to tropical latitudes and conditions than would more recently derived groups. We found support for this hypothesis in that older phyla preferred significantly lower latitudes and warmer, wetter conditions than did younger phyla. Moreover, preferences for higher latitudes and lower precipitation levels were significantly phylogenetically conserved among the six younger phyla, possibly because the older phyla possess a zoospore stage that is vulnerable to drought, whereas the younger phyla retain protective cell walls throughout their life cycle. Our study provides novel evidence that the Tropical Conservatism Hypothesis applies to microbes as well as plants and animals.
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