Changes of AM fungal abundance along environmental gradients in the arid and semi-arid grasslands of northern China.
Identifieur interne : 001D03 ( Main/Corpus ); précédent : 001D02; suivant : 001D04Changes of AM fungal abundance along environmental gradients in the arid and semi-arid grasslands of northern China.
Auteurs : Yajun Hu ; Matthias C. Rillig ; Dan Xiang ; Zhipeng Hao ; Baodong ChenSource :
- PloS one [ 1932-6203 ] ; 2013.
English descriptors
- KwdEn :
- Carbon (metabolism), China (MeSH), Ecosystem (MeSH), Environment (MeSH), Fungi (metabolism), Fungi (physiology), Hydrogen-Ion Concentration (MeSH), Hyphae (physiology), Mycorrhizae (metabolism), Mycorrhizae (physiology), Nitrogen (metabolism), Poaceae (microbiology), Soil (MeSH), Soil Microbiology (MeSH), Symbiosis (MeSH), Temperature (MeSH).
- MESH :
- chemical , metabolism : Carbon, Nitrogen.
- metabolism : Fungi, Mycorrhizae.
- microbiology : Poaceae.
- physiology : Fungi, Hyphae, Mycorrhizae.
- China, Ecosystem, Environment, Hydrogen-Ion Concentration, Soil, Soil Microbiology, Symbiosis, Temperature.
Abstract
Arbuscular mycorrhizal (AM) fungi are ubiquitous symbionts of higher plants in terrestrial ecosystems, while the occurrence of the AM symbiosis is influenced by a complex set of abiotic and biotic factors. To reveal the regional distribution pattern of AM fungi as driven by multiple environmental factors, and to understand the ecological importance of AM fungi in natural ecosystems, we conducted a field investigation on AM fungal abundance along environmental gradients in the arid and semi-arid grasslands of northern China. In addition to plant parameters recorded in situ, soil samples were collected, and soil chemo-physical and biological parameters were measured in the lab. Statistical analyses were performed to reveal the relative contribution of climatic, edaphic and vegetation factors to AM fungal abundance, especially for extraradical hyphal length density (HLD) in the soil. The results indicated that HLD were positively correlated with mean annual temperature (MAT), soil clay content and soil pH, but negatively correlated with both soil organic carbon (SOC) and soil available N. The multiple regressions and structural equation model showed that MAT was the key positive contributor and soil fertility was the key negative contributor to HLD. Furthermore, both the intraradical AM colonization (IMC) and relative abundance of AM fungi, which was quantified by real-time PCR assay, tended to decrease along the increasing SOC content. With regard to the obvious negative correlation between MAT and SOC in the research area, the positive correlation between MAT and HLD implied that AM fungi could potentially mitigate soil carbon losses especially in infertile soils under global warming. However, direct evidence from long-term experiments is still expected to support the AM fungal contribution to soil carbon pools.
DOI: 10.1371/journal.pone.0057593
PubMed: 23451247
PubMed Central: PMC3581466
Links to Exploration step
pubmed:23451247Le document en format XML
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Rillig</name></author><author><name sortKey="Xiang, Dan" sort="Xiang, Dan" uniqKey="Xiang D" first="Dan" last="Xiang">Dan Xiang</name></author><author><name sortKey="Hao, Zhipeng" sort="Hao, Zhipeng" uniqKey="Hao Z" first="Zhipeng" last="Hao">Zhipeng Hao</name></author><author><name sortKey="Chen, Baodong" sort="Chen, Baodong" uniqKey="Chen B" first="Baodong" last="Chen">Baodong Chen</name></author></titleStmt><publicationStmt><idno type="wicri:source">PubMed</idno><date when="2013">2013</date><idno type="RBID">pubmed:23451247</idno><idno type="pmid">23451247</idno><idno type="doi">10.1371/journal.pone.0057593</idno><idno type="pmc">PMC3581466</idno><idno type="wicri:Area/Main/Corpus">001D03</idno><idno type="wicri:explorRef" wicri:stream="Main" wicri:step="Corpus" wicri:corpus="PubMed">001D03</idno></publicationStmt><sourceDesc><biblStruct><analytic><title xml:lang="en">Changes of AM fungal abundance along environmental gradients in the arid and semi-arid grasslands of northern China.</title><author><name sortKey="Hu, Yajun" sort="Hu, Yajun" uniqKey="Hu Y" first="Yajun" last="Hu">Yajun Hu</name><affiliation><nlm:affiliation>State Key Laboratory of Urban and Regional Ecology, Research Center for Eco-Environmental Sciences, Chinese Academy of Sciences, Beijing, China.</nlm:affiliation></affiliation></author><author><name sortKey="Rillig, Matthias C" sort="Rillig, Matthias C" uniqKey="Rillig M" first="Matthias C" last="Rillig">Matthias C. Rillig</name></author><author><name sortKey="Xiang, Dan" sort="Xiang, Dan" uniqKey="Xiang D" first="Dan" last="Xiang">Dan Xiang</name></author><author><name sortKey="Hao, Zhipeng" sort="Hao, Zhipeng" uniqKey="Hao Z" first="Zhipeng" last="Hao">Zhipeng Hao</name></author><author><name sortKey="Chen, Baodong" sort="Chen, Baodong" uniqKey="Chen B" first="Baodong" last="Chen">Baodong Chen</name></author></analytic><series><title level="j">PloS one</title><idno type="eISSN">1932-6203</idno><imprint><date when="2013" type="published">2013</date></imprint></series></biblStruct></sourceDesc></fileDesc><profileDesc><textClass><keywords scheme="KwdEn" xml:lang="en"><term>Carbon (metabolism)</term><term>China (MeSH)</term><term>Ecosystem (MeSH)</term><term>Environment (MeSH)</term><term>Fungi (metabolism)</term><term>Fungi (physiology)</term><term>Hydrogen-Ion Concentration (MeSH)</term><term>Hyphae (physiology)</term><term>Mycorrhizae (metabolism)</term><term>Mycorrhizae (physiology)</term><term>Nitrogen (metabolism)</term><term>Poaceae (microbiology)</term><term>Soil (MeSH)</term><term>Soil Microbiology (MeSH)</term><term>Symbiosis (MeSH)</term><term>Temperature (MeSH)</term></keywords><keywords scheme="MESH" type="chemical" qualifier="metabolism" xml:lang="en"><term>Carbon</term><term>Nitrogen</term></keywords><keywords scheme="MESH" qualifier="metabolism" xml:lang="en"><term>Fungi</term><term>Mycorrhizae</term></keywords><keywords scheme="MESH" qualifier="microbiology" xml:lang="en"><term>Poaceae</term></keywords><keywords scheme="MESH" qualifier="physiology" xml:lang="en"><term>Fungi</term><term>Hyphae</term><term>Mycorrhizae</term></keywords><keywords scheme="MESH" xml:lang="en"><term>China</term><term>Ecosystem</term><term>Environment</term><term>Hydrogen-Ion Concentration</term><term>Soil</term><term>Soil Microbiology</term><term>Symbiosis</term><term>Temperature</term></keywords></textClass></profileDesc></teiHeader><front><div type="abstract" xml:lang="en">Arbuscular mycorrhizal (AM) fungi are ubiquitous symbionts of higher plants in terrestrial ecosystems, while the occurrence of the AM symbiosis is influenced by a complex set of abiotic and biotic factors. To reveal the regional distribution pattern of AM fungi as driven by multiple environmental factors, and to understand the ecological importance of AM fungi in natural ecosystems, we conducted a field investigation on AM fungal abundance along environmental gradients in the arid and semi-arid grasslands of northern China. In addition to plant parameters recorded in situ, soil samples were collected, and soil chemo-physical and biological parameters were measured in the lab. Statistical analyses were performed to reveal the relative contribution of climatic, edaphic and vegetation factors to AM fungal abundance, especially for extraradical hyphal length density (HLD) in the soil. The results indicated that HLD were positively correlated with mean annual temperature (MAT), soil clay content and soil pH, but negatively correlated with both soil organic carbon (SOC) and soil available N. The multiple regressions and structural equation model showed that MAT was the key positive contributor and soil fertility was the key negative contributor to HLD. Furthermore, both the intraradical AM colonization (IMC) and relative abundance of AM fungi, which was quantified by real-time PCR assay, tended to decrease along the increasing SOC content. With regard to the obvious negative correlation between MAT and SOC in the research area, the positive correlation between MAT and HLD implied that AM fungi could potentially mitigate soil carbon losses especially in infertile soils under global warming. However, direct evidence from long-term experiments is still expected to support the AM fungal contribution to soil carbon pools.</div></front></TEI><pubmed><MedlineCitation Status="MEDLINE" Owner="NLM"><PMID Version="1">23451247</PMID><DateCompleted><Year>2014</Year><Month>01</Month><Day>21</Day></DateCompleted><DateRevised><Year>2018</Year><Month>11</Month><Day>13</Day></DateRevised><Article PubModel="Print-Electronic"><Journal><ISSN IssnType="Electronic">1932-6203</ISSN><JournalIssue CitedMedium="Internet"><Volume>8</Volume><Issue>2</Issue><PubDate><Year>2013</Year></PubDate></JournalIssue><Title>PloS one</Title><ISOAbbreviation>PLoS One</ISOAbbreviation></Journal><ArticleTitle>Changes of AM fungal abundance along environmental gradients in the arid and semi-arid grasslands of northern China.</ArticleTitle><Pagination><MedlinePgn>e57593</MedlinePgn></Pagination><ELocationID EIdType="doi" ValidYN="Y">10.1371/journal.pone.0057593</ELocationID><Abstract><AbstractText>Arbuscular mycorrhizal (AM) fungi are ubiquitous symbionts of higher plants in terrestrial ecosystems, while the occurrence of the AM symbiosis is influenced by a complex set of abiotic and biotic factors. To reveal the regional distribution pattern of AM fungi as driven by multiple environmental factors, and to understand the ecological importance of AM fungi in natural ecosystems, we conducted a field investigation on AM fungal abundance along environmental gradients in the arid and semi-arid grasslands of northern China. In addition to plant parameters recorded in situ, soil samples were collected, and soil chemo-physical and biological parameters were measured in the lab. Statistical analyses were performed to reveal the relative contribution of climatic, edaphic and vegetation factors to AM fungal abundance, especially for extraradical hyphal length density (HLD) in the soil. The results indicated that HLD were positively correlated with mean annual temperature (MAT), soil clay content and soil pH, but negatively correlated with both soil organic carbon (SOC) and soil available N. The multiple regressions and structural equation model showed that MAT was the key positive contributor and soil fertility was the key negative contributor to HLD. Furthermore, both the intraradical AM colonization (IMC) and relative abundance of AM fungi, which was quantified by real-time PCR assay, tended to decrease along the increasing SOC content. With regard to the obvious negative correlation between MAT and SOC in the research area, the positive correlation between MAT and HLD implied that AM fungi could potentially mitigate soil carbon losses especially in infertile soils under global warming. 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