Ectomycorrhizal fungal diversity decreases in Mediterranean pine forests adapted to recurrent fires
Fire is a major disturbance linked to the evolutionary history and climate of Mediterranean ecosystems, where the vegetation has evolved fire‐adaptive traits (e.g., serotiny in pines). In Mediterranean forests, mutualistic feedbacks between trees and ectomycorrhizal (ECM) fungi, essential for ecosystem dynamics, might be shaped by recurrent fires. We tested how the structure and function of ECM fungal communities of Pinus pinaster and Pinus halepensis vary among populations subjected to high and low fire recurrence in Mediterranean ecosystems, and analysed the relative contribution of environmental (climate, soil properties) and tree‐mediated (serotiny) factors. For both pines, local and regional ECM fungal diversity were lower in areas of high than low fire recurrence, although certain fungal species were favoured in the former. A general decline of ECM root‐tip enzymatic activity for P. pinaster was associated with high fire recurrence, but not for P. halepensis. Fire recurrence and fire‐related factors such as climate, soil properties or tree phenotype explained these results. In addition to the main influence of climate, the tree fire‐adaptive trait serotiny recovered a great portion of the variation in structure and function of ECM fungal communities associated with fire recurrence. Edaphic conditions (especially pH, tightly linked to bedrock type) were an important driver shaping ECM fungal communities, but mainly at the local scale and probably independently of the fire recurrence. Our results show that ECM fungal community shifts are associated with fire recurrence in fire‐prone dry Mediterranean forests, and reveal complex feedbacks among trees, mutualistic fungi and the surrounding environment in these ecosystems.
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Format: | artículo biblioteca |
Language: | English |
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John Wiley & Sons
2020-07
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Subjects: | Ectomycorrhizal communities, Enzymatic activity, Fire recurrence, Mediterranean pines, Serotiny, |
Online Access: | http://hdl.handle.net/10261/222646 http://dx.doi.org/10.13039/501100003329 |
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dig-cide-es-10261-2226462020-11-11T07:25:38Z Ectomycorrhizal fungal diversity decreases in Mediterranean pine forests adapted to recurrent fires Pérez-Izquierdo, Leticia Zabal-Aguirre, M. Verdú, Miguel Buée, M. Rincón, Ana Ministerio de Economía y Competitividad (España) Ministerio de Ciencia, Innovación y Universidades (España) Labex ARBRE Pérez-Izquierdo, Leticia [0000-0002-5200-8157] Verdú, Miguel [0000-0002-9778-7692] Buée, M. [0000-0001-8614-3886] Ectomycorrhizal communities Enzymatic activity Fire recurrence Mediterranean pines Serotiny Fire is a major disturbance linked to the evolutionary history and climate of Mediterranean ecosystems, where the vegetation has evolved fire‐adaptive traits (e.g., serotiny in pines). In Mediterranean forests, mutualistic feedbacks between trees and ectomycorrhizal (ECM) fungi, essential for ecosystem dynamics, might be shaped by recurrent fires. We tested how the structure and function of ECM fungal communities of Pinus pinaster and Pinus halepensis vary among populations subjected to high and low fire recurrence in Mediterranean ecosystems, and analysed the relative contribution of environmental (climate, soil properties) and tree‐mediated (serotiny) factors. For both pines, local and regional ECM fungal diversity were lower in areas of high than low fire recurrence, although certain fungal species were favoured in the former. A general decline of ECM root‐tip enzymatic activity for P. pinaster was associated with high fire recurrence, but not for P. halepensis. Fire recurrence and fire‐related factors such as climate, soil properties or tree phenotype explained these results. In addition to the main influence of climate, the tree fire‐adaptive trait serotiny recovered a great portion of the variation in structure and function of ECM fungal communities associated with fire recurrence. Edaphic conditions (especially pH, tightly linked to bedrock type) were an important driver shaping ECM fungal communities, but mainly at the local scale and probably independently of the fire recurrence. Our results show that ECM fungal community shifts are associated with fire recurrence in fire‐prone dry Mediterranean forests, and reveal complex feedbacks among trees, mutualistic fungi and the surrounding environment in these ecosystems. This work was supported by the projects MyFUNCO (CGL2011-29585-C02-02) and PiroPheno (CGL2017-89751-R) founded by the Spanish Ministry for Economy and Competitiveness (MINECO), and by the LABoratoire d'EXcellence Arbre (LABEX Arbre). L.P.I. held a pre-doctoral fellowship awarded by MINECO. We also acknowledge three anonymous reviewers for their con-structive comments that greatly improved the quality of the manuscript Peer reviewed 2020-11-10T14:26:13Z 2020-11-10T14:26:13Z 2020-07 artículo http://purl.org/coar/resource_type/c_6501 Molecular Ecology 29(13): 2463-2476 (2020) 0962-1083 http://hdl.handle.net/10261/222646 10.1111/mec.15493 1365-294X http://dx.doi.org/10.13039/501100003329 en #PLACEHOLDER_PARENT_METADATA_VALUE# #PLACEHOLDER_PARENT_METADATA_VALUE# info:eu-repo/grantAgreement/AEI/Plan Estatal de Investigación Científica y Técnica y de Innovación 2017-2020/CGL2017-89751-R CGL2017-89751-R/AEI/10.13039/501100011033 http://dx.doi.org/10.1111/mec.15493 Sí none John Wiley & Sons |
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Ectomycorrhizal communities Enzymatic activity Fire recurrence Mediterranean pines Serotiny Ectomycorrhizal communities Enzymatic activity Fire recurrence Mediterranean pines Serotiny |
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Ectomycorrhizal communities Enzymatic activity Fire recurrence Mediterranean pines Serotiny Ectomycorrhizal communities Enzymatic activity Fire recurrence Mediterranean pines Serotiny Pérez-Izquierdo, Leticia Zabal-Aguirre, M. Verdú, Miguel Buée, M. Rincón, Ana Ectomycorrhizal fungal diversity decreases in Mediterranean pine forests adapted to recurrent fires |
description |
Fire is a major disturbance linked to the evolutionary history and climate of Mediterranean ecosystems, where the vegetation has evolved fire‐adaptive traits (e.g., serotiny in pines). In Mediterranean forests, mutualistic feedbacks between trees and ectomycorrhizal (ECM) fungi, essential for ecosystem dynamics, might be shaped by recurrent fires. We tested how the structure and function of ECM fungal communities of Pinus pinaster and Pinus halepensis vary among populations subjected to high and low fire recurrence in Mediterranean ecosystems, and analysed the relative contribution of environmental (climate, soil properties) and tree‐mediated (serotiny) factors. For both pines, local and regional ECM fungal diversity were lower in areas of high than low fire recurrence, although certain fungal species were favoured in the former. A general decline of ECM root‐tip enzymatic activity for P. pinaster was associated with high fire recurrence, but not for P. halepensis. Fire recurrence and fire‐related factors such as climate, soil properties or tree phenotype explained these results. In addition to the main influence of climate, the tree fire‐adaptive trait serotiny recovered a great portion of the variation in structure and function of ECM fungal communities associated with fire recurrence. Edaphic conditions (especially pH, tightly linked to bedrock type) were an important driver shaping ECM fungal communities, but mainly at the local scale and probably independently of the fire recurrence. Our results show that ECM fungal community shifts are associated with fire recurrence in fire‐prone dry Mediterranean forests, and reveal complex feedbacks among trees, mutualistic fungi and the surrounding environment in these ecosystems. |
author2 |
Ministerio de Economía y Competitividad (España) |
author_facet |
Ministerio de Economía y Competitividad (España) Pérez-Izquierdo, Leticia Zabal-Aguirre, M. Verdú, Miguel Buée, M. Rincón, Ana |
format |
artículo |
topic_facet |
Ectomycorrhizal communities Enzymatic activity Fire recurrence Mediterranean pines Serotiny |
author |
Pérez-Izquierdo, Leticia Zabal-Aguirre, M. Verdú, Miguel Buée, M. Rincón, Ana |
author_sort |
Pérez-Izquierdo, Leticia |
title |
Ectomycorrhizal fungal diversity decreases in Mediterranean pine forests adapted to recurrent fires |
title_short |
Ectomycorrhizal fungal diversity decreases in Mediterranean pine forests adapted to recurrent fires |
title_full |
Ectomycorrhizal fungal diversity decreases in Mediterranean pine forests adapted to recurrent fires |
title_fullStr |
Ectomycorrhizal fungal diversity decreases in Mediterranean pine forests adapted to recurrent fires |
title_full_unstemmed |
Ectomycorrhizal fungal diversity decreases in Mediterranean pine forests adapted to recurrent fires |
title_sort |
ectomycorrhizal fungal diversity decreases in mediterranean pine forests adapted to recurrent fires |
publisher |
John Wiley & Sons |
publishDate |
2020-07 |
url |
http://hdl.handle.net/10261/222646 http://dx.doi.org/10.13039/501100003329 |
work_keys_str_mv |
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