Abstract：
:Sexual spores are important for the dispersal and population dynamics of fungi. They show remarkable morphological diversity, but the underlying forces driving spore evolution are poorly known. We investigated whether trophic status and substrate associations are associated with morphology in 787 macrofungal genera. We show that both spore size and ornamentation are associated with trophic specialization, so that large and ornamented spores are more probable in ectomycorrhizal than in saprotrophic genera. This suggests that spore ornamentation facilitates attachment to arthropod vectors, which ectomycorrhizal species may need to reach lower soil layers. Elongated spore shapes are more common in saprotrophic taxa, and genera associated with above ground substrates are more likely to have allantoid (curved elongated) spores, probably to lower the risk of wash out by precipitation. Overall, our results suggest that safe arrival on specific substrates is a more important driver of evolution in spore morphology than dispersal per se.
journal_name
Sci Repjournal_title
Scientific reportsauthors
Calhim S,Halme P,Petersen JH,Læssøe T,Bässler C,Heilmann-Clausen Jdoi
10.1038/s41598-018-23292-8subject
Has Abstractpub_date
2018-03-29 00:00:00pages
5356issue
1issn
2045-2322pii
10.1038/s41598-018-23292-8journal_volume
8pub_type
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