NDLI: Characterization of Fungal Community Structure on a Weathered Pegmatitic Granite

Content Provider	Springer Nature Link
Author	Gleeson, Deirdre B. Clipson, Nicholas Melville, Karrie Gadd, Geoffrey M. McDermott, Frank P.
Copyright Year	2005
Abstract	This study exploited the contrasting major element chemistry of adjacent, physically separable crystals of framework and sheet silicates in a pegmatitic granite to investigate the mineralogical influences of fungal community structure on mineral surfaces. Large intact crystals of variably weathered muscovite, plagioclase, K-feldspar, and quartz were individually extracted, together with whole-rock granite. Environmental scanning electron microscopy (ESEM) revealed a diversity of fungal structures, with microcolonial fungi and fungal hyphae clearly visible on surfaces of all mineral types. Fungal automated ribosomal intergenic spacer analysis (FARISA) was used to generate a ribotype profile for each mineral sample and a randomization test revealed that ribotype profiles, or community fingerprints, differed between different mineral types. Canonical correspondence analysis (CCA) revealed that mineral chemistry affected individual fungal ribotypes, and strong relationships were found between certain ribotypes and particular chemical elements. This finding was further supported by analysis of variance (ANOVA) of the 16 most abundant ribotypes within the community. Significantly, individual ribotypes were largely restricted to single mineral types and ribotypes clustered strongly on the basis of mineral type. CCA also revealed that Al, Si, and Ca had a significant impact on fungal community structure within this system. These results show that fungal community structure was driven by the chemical composition of mineral substrates, indicating selective pressure by individual chemical elements on fungal populations in situ.
Starting Page	360
Ending Page	368
Page Count	9
File Format	PDF
ISSN	00953628
Journal	Microbial Ecology
Volume Number	50
Issue Number	3
e-ISSN	1432184X
Language	English
Publisher	Springer-Verlag
Publisher Date	2005-11-24
Publisher Place	New York
Access Restriction	Subscribed
Subject Keyword	Ecology Microbiology Geoecology/Natural Processes Nature Conservation
Content Type	Text
Resource Type	Article
Subject	Soil Science Ecology Ecology, Evolution, Behavior and Systematics

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