MycorrhizaeV1, Main, Corpus, bibRecord, 001E27

Foliar δ15N is affected by foliar nitrogen uptake, soil nitrogen, and mycorrhizae along a nitrogen deposition gradient.

Identifieur interne : 001E27 ( Main/Corpus ); précédent : 001E26; suivant : 001E28

Foliar δ15N is affected by foliar nitrogen uptake, soil nitrogen, and mycorrhizae along a nitrogen deposition gradient.

Auteurs : Dena M. Vallano ; Jed P. Sparks

Source :

Oecologia [ 1432-1939 ] ; 2013.

RBID : pubmed:23070141

English descriptors

KwdEn :
- Acer (metabolism), Betula (metabolism), Fagus (metabolism), Mycorrhizae (physiology), Nitrogen (metabolism), Nitrogen Isotopes (metabolism), Quercus (metabolism), Soil (chemistry), Trees (metabolism).
MESH :
- chemical , chemistry : Soil.
- chemical , metabolism : Nitrogen, Nitrogen Isotopes.
- metabolism : Acer, Betula, Fagus, Quercus, Trees.
- physiology : Mycorrhizae.

Abstract

Foliar nitrogen isotope (δ(15)N) composition patterns have been linked to soil N, mycorrhizal fractionation, and within-plant fractionations. However, few studies have examined the potential importance of the direct foliar uptake of gaseous reactive N on foliar δ(15)N. Using an experimental set-up in which the rate of mycorrhizal infection was reduced using a fungicide, we examined the influence of mycorrhizae on foliar δ(15)N in potted red maple (Acer rubrum) seedlings along a regional N deposition gradient in New York State. Mycorrhizal associations altered foliar δ(15)N values in red maple seedlings from 0.06 to 0.74 ‰ across sites. At the same sites, we explored the predictive roles of direct foliar N uptake, soil δ(15)N, and mycorrhizae on foliar δ(15)N in adult stands of A. rubrum, American beech (Fagus grandifolia), black birch (Betula lenta), and red oak (Quercus rubra). Multiple regression analysis indicated that ambient atmospheric nitrogen dioxide (NO2) concentration explained 0, 69, 23, and 45 % of the variation in foliar δ(15)N in American beech, red maple, red oak, and black birch, respectively, after accounting for the influence of soil δ(15)N. There was no correlation between foliar δ(13)C and foliar %N with increasing atmospheric NO2 concentration in most species. Our findings suggest that total canopy uptake, and likely direct foliar N uptake, of pollution-derived atmospheric N deposition may significantly impact foliar δ(15)N in several dominant species occurring in temperate forest ecosystems.

DOI: 10.1007/s00442-012-2489-3
PubMed: 23070141

Links to Exploration step

pubmed:23070141

Le document en format XML

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<author><name sortKey="Vallano, Dena M" sort="Vallano, Dena M" uniqKey="Vallano D" first="Dena M" last="Vallano">Dena M. Vallano</name>
<affiliation><nlm:affiliation>Department of Ecology and Evolutionary Biology, Cornell University, Ithaca, NY 14853-2701, USA. dena.vallano@gmail.com</nlm:affiliation>
</affiliation>
</author>
<author><name sortKey="Sparks, Jed P" sort="Sparks, Jed P" uniqKey="Sparks J" first="Jed P" last="Sparks">Jed P. Sparks</name>
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<profileDesc><textClass><keywords scheme="KwdEn" xml:lang="en"><term>Acer (metabolism)</term>
<term>Betula (metabolism)</term>
<term>Fagus (metabolism)</term>
<term>Mycorrhizae (physiology)</term>
<term>Nitrogen (metabolism)</term>
<term>Nitrogen Isotopes (metabolism)</term>
<term>Quercus (metabolism)</term>
<term>Soil (chemistry)</term>
<term>Trees (metabolism)</term>
</keywords>
<keywords scheme="MESH" type="chemical" qualifier="chemistry" xml:lang="en"><term>Soil</term>
</keywords>
<keywords scheme="MESH" type="chemical" qualifier="metabolism" xml:lang="en"><term>Nitrogen</term>
<term>Nitrogen Isotopes</term>
</keywords>
<keywords scheme="MESH" qualifier="metabolism" xml:lang="en"><term>Acer</term>
<term>Betula</term>
<term>Fagus</term>
<term>Quercus</term>
<term>Trees</term>
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<front><div type="abstract" xml:lang="en">Foliar nitrogen isotope (δ(15)N) composition patterns have been linked to soil N, mycorrhizal fractionation, and within-plant fractionations. However, few studies have examined the potential importance of the direct foliar uptake of gaseous reactive N on foliar δ(15)N. Using an experimental set-up in which the rate of mycorrhizal infection was reduced using a fungicide, we examined the influence of mycorrhizae on foliar δ(15)N in potted red maple (Acer rubrum) seedlings along a regional N deposition gradient in New York State. Mycorrhizal associations altered foliar δ(15)N values in red maple seedlings from 0.06 to 0.74 ‰ across sites. At the same sites, we explored the predictive roles of direct foliar N uptake, soil δ(15)N, and mycorrhizae on foliar δ(15)N in adult stands of A. rubrum, American beech (Fagus grandifolia), black birch (Betula lenta), and red oak (Quercus rubra). Multiple regression analysis indicated that ambient atmospheric nitrogen dioxide (NO2) concentration explained 0, 69, 23, and 45 % of the variation in foliar δ(15)N in American beech, red maple, red oak, and black birch, respectively, after accounting for the influence of soil δ(15)N. There was no correlation between foliar δ(13)C and foliar %N with increasing atmospheric NO2 concentration in most species. Our findings suggest that total canopy uptake, and likely direct foliar N uptake, of pollution-derived atmospheric N deposition may significantly impact foliar δ(15)N in several dominant species occurring in temperate forest ecosystems.</div>
</front>
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<DateRevised><Year>2018</Year>
<Month>11</Month>
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<Title>Oecologia</Title>
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<ArticleTitle>Foliar δ15N is affected by foliar nitrogen uptake, soil nitrogen, and mycorrhizae along a nitrogen deposition gradient.</ArticleTitle>
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<Abstract><AbstractText>Foliar nitrogen isotope (δ(15)N) composition patterns have been linked to soil N, mycorrhizal fractionation, and within-plant fractionations. However, few studies have examined the potential importance of the direct foliar uptake of gaseous reactive N on foliar δ(15)N. Using an experimental set-up in which the rate of mycorrhizal infection was reduced using a fungicide, we examined the influence of mycorrhizae on foliar δ(15)N in potted red maple (Acer rubrum) seedlings along a regional N deposition gradient in New York State. Mycorrhizal associations altered foliar δ(15)N values in red maple seedlings from 0.06 to 0.74 ‰ across sites. At the same sites, we explored the predictive roles of direct foliar N uptake, soil δ(15)N, and mycorrhizae on foliar δ(15)N in adult stands of A. rubrum, American beech (Fagus grandifolia), black birch (Betula lenta), and red oak (Quercus rubra). Multiple regression analysis indicated that ambient atmospheric nitrogen dioxide (NO2) concentration explained 0, 69, 23, and 45 % of the variation in foliar δ(15)N in American beech, red maple, red oak, and black birch, respectively, after accounting for the influence of soil δ(15)N. There was no correlation between foliar δ(13)C and foliar %N with increasing atmospheric NO2 concentration in most species. Our findings suggest that total canopy uptake, and likely direct foliar N uptake, of pollution-derived atmospheric N deposition may significantly impact foliar δ(15)N in several dominant species occurring in temperate forest ecosystems.</AbstractText>
</Abstract>
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<ForeName>Dena M</ForeName>
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<AffiliationInfo><Affiliation>Department of Ecology and Evolutionary Biology, Cornell University, Ithaca, NY 14853-2701, USA. dena.vallano@gmail.com</Affiliation>
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<Author ValidYN="Y"><LastName>Sparks</LastName>
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<MeshHeading><DescriptorName UI="D029963" MajorTopicYN="N">Quercus</DescriptorName>
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Foliar δ15N is affected by foliar nitrogen uptake, soil nitrogen, and mycorrhizae along a nitrogen deposition gradient.

Foliar δ15N is affected by foliar nitrogen uptake, soil nitrogen, and mycorrhizae along a nitrogen deposition gradient.

Source :

English descriptors

Abstract

Links to Exploration step

Le document en format XML

Pour manipuler ce document sous Unix (Dilib)

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