Strong succession in arbuscular mycorrhizal fungal communities

The ISME Journal
Cheng GaoJohn W Taylor

Abstract

The ecology of fungi lags behind that of plants and animals because most fungi are microscopic and hidden in their substrates. Here, we address the basic ecological process of fungal succession in nature using the microscopic, arbuscular mycorrhizal fungi (AMF) that form essential mutualisms with 70-90% of plants. We find a signal for temporal change in AMF community similarity that is 40-fold stronger than seen in the most recent studies, likely due to weekly samplings of roots, rhizosphere and soil throughout the 17 weeks from seedling to fruit maturity and the use of the fungal DNA barcode to recognize species in a simple, agricultural environment. We demonstrate the patterns of nestedness and turnover and the microbial equivalents of the processes of immigration and extinction, that is, appearance and disappearance. We also provide the first evidence that AMF species co-exist rather than simply co-occur by demonstrating negative, density-dependent population growth for multiple species. Our study shows the advantages of using fungi to test basic ecological hypotheses (e.g., nestedness v. turnover, immigration v. extinction, and coexistence theory) over periods as short as one season.

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Citations

Dec 7, 2019·Proceedings of the National Academy of Sciences of the United States of America·Nelle VaroquauxElizabeth Purdom
Oct 28, 2019·Methods : a Companion to Methods in Enzymology·Mowei ZhouLjiljana Paša-Tolić
Dec 18, 2020·FEMS Microbiology Ecology·Chi LiuMinjie Yao
Dec 15, 2020·Applied and Environmental Microbiology·Heidi M-L WipfDevin Coleman-Derr
Feb 13, 2021·Scientific Reports·Lorinda S BullingtonBeau G Larkin
Dec 12, 2020·International Journal of Environmental Research and Public Health·Hai HuangYuxiu Zhang
Mar 26, 2021·Microbiome·Ling XuDevin Coleman-Derr

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Datasets Mentioned

BETA
PRJNA412410
MG008508
MG008559

Software Mentioned

PERM
USEARCH
MuMIn Package
picante
CoDaSeq
stats package
zCompositions
MEGA
betapart
MAFFT

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