Effects of mutualistic and pathogenic soil mycobiota on forest ecosystem functioning: herbaceous phytometer growth on natural and sterilised soils

Knowledge of forest functioning is important for sustainable forest management and conservation. The growth variation of standardised plants (phytometers) can serve as a measure of ecosystem functions and provide a link with soil biotic and edaphic conditions.We aimed to test experimentally how fore...

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Autores principales: Norbertas Noreika, Meelis Pärtel, Maarja Öpik
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Publicado: Elsevier 2021
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spelling oai:doaj.org-article:6f5ec5ffe9634163a4489c28b0cb9f5e2021-12-01T04:53:43ZEffects of mutualistic and pathogenic soil mycobiota on forest ecosystem functioning: herbaceous phytometer growth on natural and sterilised soils1470-160X10.1016/j.ecolind.2021.107792https://doaj.org/article/6f5ec5ffe9634163a4489c28b0cb9f5e2021-08-01T00:00:00Zhttp://www.sciencedirect.com/science/article/pii/S1470160X2100457Xhttps://doaj.org/toc/1470-160XKnowledge of forest functioning is important for sustainable forest management and conservation. The growth variation of standardised plants (phytometers) can serve as a measure of ecosystem functions and provide a link with soil biotic and edaphic conditions.We aimed to test experimentally how forest edaphic conditions and different soil symbiotic fungal guilds, their diversity and relative abundance affect the growth of herbaceous phytometer. We explored whether phytometer growth differs among three types of soils: i) natural (established fungal community), ii) sterilised by gamma-irradiation, iii) sterilised and inoculated with natural soil (successional fungal communities). We analysed soil samples from 100 old-growth boreo-nemoral forests in Southern Estonia. We used environmental DNA to evaluate the diversity and relative abundance of the following fungal guilds: arbuscular mycorrhizal (AM), ectomycorrhizal (ECM), pathogenic, and saprotrophic fungi. Phytometer (Hordeum vulgare) was grown under controlled greenhouse conditions for three weeks on differently treated (natural, sterilised, inoculated) soils from all sites.Phytometer growth did not differ among treatments. Nevertheless, differently treated forest soils in interaction with fungal diversity measures often had a significant relationship with phytometer growth. Phytometer biomass was lower in successional communities with high pathogen diversity, which were counterbalanced by mutualists in established communities of natural soils. A positive relationship of phytometer growth with the diversity of forest-specific symbionts (ECM fungi) likely demonstrated the overall “health” of forest soils. The diversity of AM fungi was surprisingly negatively related to phytometer growth. However, the abundance of AM fungi showed a positive association with phytometer growth in successional communities.We demonstrate that phytometer growth was related to soil fungal diversity depending on the presence and successional status of soil biota. Our study highlights that a herbaceous phytometer can be a quick, undemanding and affordable indicator of the status of forest soil biota. Healthy habitat-specific fungal communities are crucial for forest functioning and should be considered in management.Norbertas NoreikaMeelis PärtelMaarja ÖpikElsevierarticleBoreal and nemoral forestsGamma irradiationHerbaceous phytometerMutualistic and pathogenic fungiProductivitySoil eDNAEcologyQH540-549.5ENEcological Indicators, Vol 127, Iss , Pp 107792- (2021)
institution DOAJ
collection DOAJ
language EN
topic Boreal and nemoral forests
Gamma irradiation
Herbaceous phytometer
Mutualistic and pathogenic fungi
Productivity
Soil eDNA
Ecology
QH540-549.5
spellingShingle Boreal and nemoral forests
Gamma irradiation
Herbaceous phytometer
Mutualistic and pathogenic fungi
Productivity
Soil eDNA
Ecology
QH540-549.5
Norbertas Noreika
Meelis Pärtel
Maarja Öpik
Effects of mutualistic and pathogenic soil mycobiota on forest ecosystem functioning: herbaceous phytometer growth on natural and sterilised soils
description Knowledge of forest functioning is important for sustainable forest management and conservation. The growth variation of standardised plants (phytometers) can serve as a measure of ecosystem functions and provide a link with soil biotic and edaphic conditions.We aimed to test experimentally how forest edaphic conditions and different soil symbiotic fungal guilds, their diversity and relative abundance affect the growth of herbaceous phytometer. We explored whether phytometer growth differs among three types of soils: i) natural (established fungal community), ii) sterilised by gamma-irradiation, iii) sterilised and inoculated with natural soil (successional fungal communities). We analysed soil samples from 100 old-growth boreo-nemoral forests in Southern Estonia. We used environmental DNA to evaluate the diversity and relative abundance of the following fungal guilds: arbuscular mycorrhizal (AM), ectomycorrhizal (ECM), pathogenic, and saprotrophic fungi. Phytometer (Hordeum vulgare) was grown under controlled greenhouse conditions for three weeks on differently treated (natural, sterilised, inoculated) soils from all sites.Phytometer growth did not differ among treatments. Nevertheless, differently treated forest soils in interaction with fungal diversity measures often had a significant relationship with phytometer growth. Phytometer biomass was lower in successional communities with high pathogen diversity, which were counterbalanced by mutualists in established communities of natural soils. A positive relationship of phytometer growth with the diversity of forest-specific symbionts (ECM fungi) likely demonstrated the overall “health” of forest soils. The diversity of AM fungi was surprisingly negatively related to phytometer growth. However, the abundance of AM fungi showed a positive association with phytometer growth in successional communities.We demonstrate that phytometer growth was related to soil fungal diversity depending on the presence and successional status of soil biota. Our study highlights that a herbaceous phytometer can be a quick, undemanding and affordable indicator of the status of forest soil biota. Healthy habitat-specific fungal communities are crucial for forest functioning and should be considered in management.
format article
author Norbertas Noreika
Meelis Pärtel
Maarja Öpik
author_facet Norbertas Noreika
Meelis Pärtel
Maarja Öpik
author_sort Norbertas Noreika
title Effects of mutualistic and pathogenic soil mycobiota on forest ecosystem functioning: herbaceous phytometer growth on natural and sterilised soils
title_short Effects of mutualistic and pathogenic soil mycobiota on forest ecosystem functioning: herbaceous phytometer growth on natural and sterilised soils
title_full Effects of mutualistic and pathogenic soil mycobiota on forest ecosystem functioning: herbaceous phytometer growth on natural and sterilised soils
title_fullStr Effects of mutualistic and pathogenic soil mycobiota on forest ecosystem functioning: herbaceous phytometer growth on natural and sterilised soils
title_full_unstemmed Effects of mutualistic and pathogenic soil mycobiota on forest ecosystem functioning: herbaceous phytometer growth on natural and sterilised soils
title_sort effects of mutualistic and pathogenic soil mycobiota on forest ecosystem functioning: herbaceous phytometer growth on natural and sterilised soils
publisher Elsevier
publishDate 2021
url https://doaj.org/article/6f5ec5ffe9634163a4489c28b0cb9f5e
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AT meelispartel effectsofmutualisticandpathogenicsoilmycobiotaonforestecosystemfunctioningherbaceousphytometergrowthonnaturalandsterilisedsoils
AT maarjaopik effectsofmutualisticandpathogenicsoilmycobiotaonforestecosystemfunctioningherbaceousphytometergrowthonnaturalandsterilisedsoils
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