Partitioning of soil phosphorus among arbuscular and ectomycorrhizal trees in tropical and subtropical forests.
Identifieur interne : 000949 ( Main/Corpus ); précédent : 000948; suivant : 000950Partitioning of soil phosphorus among arbuscular and ectomycorrhizal trees in tropical and subtropical forests.
Auteurs : Xubing Liu ; David F R P. Burslem ; Joe D. Taylor ; Andy F S. Taylor ; Eyen Khoo ; Noreen Majalap-Lee ; Thorunn Helgason ; David JohnsonSource :
- Ecology letters [ 1461-0248 ] ; 2018.
English descriptors
- KwdEn :
- MESH :
- chemical , chemistry : Soil.
- chemical : Phosphorus.
- Forests, Mycorrhizae, Plant Roots, Trees.
Abstract
Partitioning of soil phosphorus (P) pools has been proposed as a key mechanism maintaining plant diversity, but experimental support is lacking. Here, we provided different chemical forms of P to 15 tree species with contrasting root symbiotic relationships to investigate plant P acquisition in both tropical and subtropical forests. Both ectomycorrhizal (ECM) and arbuscular mycorrhizal (AM) trees responded positively to addition of inorganic P, but strikingly, ECM trees acquired more P from a complex organic form (phytic acid). Most ECM tree species and all AM tree species also showed some capacity to take up simple organic P (monophosphate). Mycorrhizal colonisation was negatively correlated with soil extractable P concentration, suggesting that mycorrhizal fungi may regulate organic P acquisition among tree species. Our results support the hypothesis that ECM and AM plants partition soil P sources, which may play an ecologically important role in promoting species coexistence in tropical and subtropical forests.
DOI: 10.1111/ele.12939
PubMed: 29536604
Links to Exploration step
pubmed:29536604Le document en format XML
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<affiliation><nlm:affiliation>Department of Ecology, School of Life Sciences, Sun Yat-sen University, Guangzhou, 510275, China.</nlm:affiliation>
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<author><name sortKey="Khoo, Eyen" sort="Khoo, Eyen" uniqKey="Khoo E" first="Eyen" last="Khoo">Eyen Khoo</name>
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<series><title level="j">Ecology letters</title>
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<term>Mycorrhizae (MeSH)</term>
<term>Phosphorus (MeSH)</term>
<term>Plant Roots (MeSH)</term>
<term>Soil (chemistry)</term>
<term>Trees (MeSH)</term>
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<front><div type="abstract" xml:lang="en">Partitioning of soil phosphorus (P) pools has been proposed as a key mechanism maintaining plant diversity, but experimental support is lacking. Here, we provided different chemical forms of P to 15 tree species with contrasting root symbiotic relationships to investigate plant P acquisition in both tropical and subtropical forests. Both ectomycorrhizal (ECM) and arbuscular mycorrhizal (AM) trees responded positively to addition of inorganic P, but strikingly, ECM trees acquired more P from a complex organic form (phytic acid). Most ECM tree species and all AM tree species also showed some capacity to take up simple organic P (monophosphate). Mycorrhizal colonisation was negatively correlated with soil extractable P concentration, suggesting that mycorrhizal fungi may regulate organic P acquisition among tree species. Our results support the hypothesis that ECM and AM plants partition soil P sources, which may play an ecologically important role in promoting species coexistence in tropical and subtropical forests.</div>
</front>
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<Abstract><AbstractText>Partitioning of soil phosphorus (P) pools has been proposed as a key mechanism maintaining plant diversity, but experimental support is lacking. Here, we provided different chemical forms of P to 15 tree species with contrasting root symbiotic relationships to investigate plant P acquisition in both tropical and subtropical forests. Both ectomycorrhizal (ECM) and arbuscular mycorrhizal (AM) trees responded positively to addition of inorganic P, but strikingly, ECM trees acquired more P from a complex organic form (phytic acid). Most ECM tree species and all AM tree species also showed some capacity to take up simple organic P (monophosphate). Mycorrhizal colonisation was negatively correlated with soil extractable P concentration, suggesting that mycorrhizal fungi may regulate organic P acquisition among tree species. Our results support the hypothesis that ECM and AM plants partition soil P sources, which may play an ecologically important role in promoting species coexistence in tropical and subtropical forests.</AbstractText>
<CopyrightInformation>© 2018 John Wiley & Sons Ltd/CNRS.</CopyrightInformation>
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