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The composition of arbuscular mycorrhizal fungal communities differs among the roots, spores and extraradical mycelia associated with five Mediterranean plant species
Author(s) -
VarelaCervero Sara,
Vasar Martti,
Davison John,
Barea José Miguel,
Öpik Maarja,
AzcónAguilar Concepción
Publication year - 2015
Publication title -
environmental microbiology
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.954
H-Index - 188
eISSN - 1462-2920
pISSN - 1462-2912
DOI - 10.1111/1462-2920.12810
Subject(s) - biology , propagule , spore , mycelium , botany , pyrosequencing , mycology , mycorrhiza , symbiosis , bacteria , gene , biochemistry , genetics
Summary Arbuscular mycorrhizal fungi ( AMF ) are essential constituents of most terrestrial ecosystems. AMF species differ in terms of propagation strategies and the major propagules they form. This study compared the AMF community composition of different propagule fractions – colonized roots, spores and extraradical mycelium ( ERM ) – associated with five M editerranean plant species in S ierra de B aza N atural P ark ( G ranada, S pain). AMF were identified using 454 pyrosequencing of the SSU rRNA gene. A total of 96 AMF phylogroups [virtual taxa ( VT )] were detected in the study site, including 31 novel VT . After per‐sample sequencing depth standardization, 71 VT were recorded from plant roots, and 47 from each of the spore and ERM fractions. AMF communities differed significantly among the propagule fractions, and the root‐colonizing fraction differed among host plant species. Indicator VT were detected for the root (13 G lomus VT ), spore ( P araglomus VT 281, VT 336, P acispora VT 284) and ERM ( D iversispora VT 62) fractions. This study provides detailed evidence from a natural system that AMF taxa are differentially allocated among soil mycelium, soil spores and colonized root propagules. This has important implications for interpreting AMF diversity surveys and designing applications of AMF in vegetation restoration.