Genetic diversity patterns of arbuscular mycorrhizal fungi associated with the mycoheterotroph Arachnitis uniflora Phil. (Corsiaceae)

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Title: Genetic diversity patterns of arbuscular mycorrhizal fungi associated with the mycoheterotroph Arachnitis uniflora Phil. (Corsiaceae)
Author(s): Renny, M
Cristina Acosta, M
Cofre, N
Dominguez, LS
Bidartondo, MI
Sersic, AN
Item Type: Journal Article
Abstract: Background and AimsArachnitis uniflora is a mycoheterotrophic plant that exploits arbuscular mycorrhizal fungi of neighbouring plants. We tested A. uniflora's specificity towards fungi across its large latitudinal range, as well as the role of historical events and current environmental, geographical and altitudinal variables on fungal genetic diversity. MethodsArachnitis uniflora mycorrhizas were sampled at 25 sites. Fungal phylogenetic relationships were reconstructed, genetic diversity was calculated and the main divergent lineages were dated. Phylogeographical analysis was performed with the main fungal clade. Fungal diversity correlations with environmental factors were investigated. Key Results Glomeraceae fungi dominated, with a main clade that likely originated in the Upper Cretaceous and diversified in the Miocene. Two other arbuscular mycorrhizal fungal families not previously known to be targeted by A. uniflora were detected rarely and appear to be facultative associations. High genetic diversity, found in Bolivia and both northern and southern Patagonia, was correlated with temperature, rainfall and soil features. Conclusions Fungal genetic diversity and its distribution can be explained by the ancient evolutionary history of the target fungi and by micro-scale environmental conditions with a geographical mosaic pattern.
Publication Date: 7-Apr-2017
Date of Acceptance: 14-Feb-2017
URI: http://hdl.handle.net/10044/1/49498
DOI: https://dx.doi.org/10.1093/aob/mcx023
ISSN: 0305-7364
Publisher: OUP
Start Page: 1279
End Page: 1294
Journal / Book Title: Annals of Botany
Volume: 119
Issue: 8
Copyright Statement: © The Author 2017. Published by Oxford University Press on behalf of the Annals of Botany Company. All rights reserved. For Permissions, please email: journals.permissions@oup.com
Sponsor/Funder: Natural Environment Research Council (NERC)
Natural Environment Research Council (NERC)
Funder's Grant Number: NE/K006339/1
NE/N009665/1
Copyright Statement: © The Author 2017. Published by Oxford University Press on behalf of the Annals of Botany Company. All rights reserved. For Permissions, please email: journals.permissions@oup.com
Keywords: Science & Technology
Life Sciences & Biomedicine
Plant Sciences
Arbuscular mycorrhizal fungi
Andean-Patagonian forest
Arachnitis uniflora
genetic diversity
mycoheterotrophy
phylogeography
MYCO-HETEROTROPHIC PLANTS
SEASONAL-VARIATION
ENVIRONMENTAL-CONDITIONS
TEMPERATURE-GRADIENT
ROOT COLONIZATION
SOUTH-AMERICA
SOIL-PH
EVOLUTION
NOTHOFAGUS
PATAGONIA
Andean–Patagonian forest
Arachnitis uniflora
Arbuscular mycorrhizal fungi
genetic diversity
mycoheterotrophy
phylogeography
Science & Technology
Life Sciences & Biomedicine
Plant Sciences
Arbuscular mycorrhizal fungi
Andean-Patagonian forest
Arachnitis uniflora
genetic diversity
mycoheterotrophy
phylogeography
MYCO-HETEROTROPHIC PLANTS
SEASONAL-VARIATION
ENVIRONMENTAL-CONDITIONS
TEMPERATURE-GRADIENT
ROOT COLONIZATION
SOUTH-AMERICA
SOIL-PH
EVOLUTION
NOTHOFAGUS
PATAGONIA
0607 Plant Biology
0602 Ecology
Plant Biology & Botany
Publication Status: Published
Appears in Collections:Faculty of Natural Sciences



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