MycorrhizaeV1, Main, Corpus, bibRecord, 001B80

Impacts of simulated climate change and fungal symbionts on survival and growth of a foundation species in sand dunes.

Identifieur interne : 001B80 ( Main/Corpus ); précédent : 001B79; suivant : 001B81

Impacts of simulated climate change and fungal symbionts on survival and growth of a foundation species in sand dunes.

Auteurs : Sarah M. Emery ; Jennifer A. Rudgers

Source :

Oecologia [ 1432-1939 ] ; 2013.

RBID : pubmed:23793582

English descriptors

KwdEn :
- Biomass (MeSH), Climate Change (MeSH), Ecosystem (MeSH), Endophytes (physiology), Fungi (physiology), Michigan (MeSH), Mycorrhizae (physiology), Plant Roots (growth & development), Plant Roots (microbiology), Poaceae (growth & development), Poaceae (microbiology), Symbiosis (physiology), Temperature (MeSH).
MESH :
- growth & development : Plant Roots, Poaceae.
- microbiology : Plant Roots, Poaceae.
- physiology : Endophytes, Fungi, Mycorrhizae, Symbiosis.
- Biomass, Climate Change, Ecosystem, Michigan, Temperature.

Abstract

For many ecosystems, one of the primary avenues of climate impact may be through changes to foundation species, which create habitats and sustain ecosystem services. For plants, microbial symbionts can often act as mutualists under abiotic stress and may mediate foundational plant responses to climate change. We manipulated the presence of endophytes in Ammophila breviligulata, a foundational sand dune species, to evaluate their potential to influence plant responses to climate change. We simulated projected climate change scenarios for temperature and precipitation using a growth chamber experiment. A 5 °C increase in temperature relative to current climate in northern Michigan reduced A. breviligulata survival by 45 %. Root biomass of A. breviligulata, which is critical to dune stabilization, was also strongly reduced by temperature. Plants inoculated with the endophyte had 14 % higher survival than endophyte-free plants. Contrary to our prediction, endophyte symbiosis did not alter the magnitude or direction of the effects of climate manipulations on A. breviligulata survival. However, in the absence of the endophyte, an increase in temperature increased the number of sand grains bound by roots by 80 %, while in symbiotic plants sand adherence did not significantly respond to temperature. Thus, plant-endophyte symbiosis actually negated the benefits in ecosystem function gained under a warmer climate. This study suggests that heat stress related to climate change in the Great Lakes may compromise the ability of A. breviligulata to stabilize dune ecosystems and reduce carbon storage and organic matter build-up in these early-successional systems due to reduced plant survival and root growth.

DOI: 10.1007/s00442-013-2705-9
PubMed: 23793582

Links to Exploration step

pubmed:23793582

Le document en format XML

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<author><name sortKey="Emery, Sarah M" sort="Emery, Sarah M" uniqKey="Emery S" first="Sarah M" last="Emery">Sarah M. Emery</name>
<affiliation><nlm:affiliation>Department of Biology, University of Louisville, 139 Life Sciences Bldg, Louisville, KY, 40292, USA, sarah.emery@louisville.edu.</nlm:affiliation>
</affiliation>
</author>
<author><name sortKey="Rudgers, Jennifer A" sort="Rudgers, Jennifer A" uniqKey="Rudgers J" first="Jennifer A" last="Rudgers">Jennifer A. Rudgers</name>
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<term>Ecosystem (MeSH)</term>
<term>Endophytes (physiology)</term>
<term>Fungi (physiology)</term>
<term>Michigan (MeSH)</term>
<term>Mycorrhizae (physiology)</term>
<term>Plant Roots (growth & development)</term>
<term>Plant Roots (microbiology)</term>
<term>Poaceae (growth & development)</term>
<term>Poaceae (microbiology)</term>
<term>Symbiosis (physiology)</term>
<term>Temperature (MeSH)</term>
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<term>Mycorrhizae</term>
<term>Symbiosis</term>
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<front><div type="abstract" xml:lang="en">For many ecosystems, one of the primary avenues of climate impact may be through changes to foundation species, which create habitats and sustain ecosystem services. For plants, microbial symbionts can often act as mutualists under abiotic stress and may mediate foundational plant responses to climate change. We manipulated the presence of endophytes in Ammophila breviligulata, a foundational sand dune species, to evaluate their potential to influence plant responses to climate change. We simulated projected climate change scenarios for temperature and precipitation using a growth chamber experiment. A 5 °C increase in temperature relative to current climate in northern Michigan reduced A. breviligulata survival by 45 %. Root biomass of A. breviligulata, which is critical to dune stabilization, was also strongly reduced by temperature. Plants inoculated with the endophyte had 14 % higher survival than endophyte-free plants. Contrary to our prediction, endophyte symbiosis did not alter the magnitude or direction of the effects of climate manipulations on A. breviligulata survival. However, in the absence of the endophyte, an increase in temperature increased the number of sand grains bound by roots by 80 %, while in symbiotic plants sand adherence did not significantly respond to temperature. Thus, plant-endophyte symbiosis actually negated the benefits in ecosystem function gained under a warmer climate. This study suggests that heat stress related to climate change in the Great Lakes may compromise the ability of A. breviligulata to stabilize dune ecosystems and reduce carbon storage and organic matter build-up in these early-successional systems due to reduced plant survival and root growth.</div>
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<Abstract><AbstractText>For many ecosystems, one of the primary avenues of climate impact may be through changes to foundation species, which create habitats and sustain ecosystem services. For plants, microbial symbionts can often act as mutualists under abiotic stress and may mediate foundational plant responses to climate change. We manipulated the presence of endophytes in Ammophila breviligulata, a foundational sand dune species, to evaluate their potential to influence plant responses to climate change. We simulated projected climate change scenarios for temperature and precipitation using a growth chamber experiment. A 5 °C increase in temperature relative to current climate in northern Michigan reduced A. breviligulata survival by 45 %. Root biomass of A. breviligulata, which is critical to dune stabilization, was also strongly reduced by temperature. Plants inoculated with the endophyte had 14 % higher survival than endophyte-free plants. Contrary to our prediction, endophyte symbiosis did not alter the magnitude or direction of the effects of climate manipulations on A. breviligulata survival. However, in the absence of the endophyte, an increase in temperature increased the number of sand grains bound by roots by 80 %, while in symbiotic plants sand adherence did not significantly respond to temperature. Thus, plant-endophyte symbiosis actually negated the benefits in ecosystem function gained under a warmer climate. This study suggests that heat stress related to climate change in the Great Lakes may compromise the ability of A. breviligulata to stabilize dune ecosystems and reduce carbon storage and organic matter build-up in these early-successional systems due to reduced plant survival and root growth.</AbstractText>
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Impacts of simulated climate change and fungal symbionts on survival and growth of a foundation species in sand dunes.

Impacts of simulated climate change and fungal symbionts on survival and growth of a foundation species in sand dunes.

Source :

English descriptors

Abstract

Links to Exploration step

Le document en format XML

Pour manipuler ce document sous Unix (Dilib)

Pour mettre un lien sur cette page dans le réseau Wicri

Pour générer des pages wiki