Microbial Community, Newly Sequestered Soil Organic Carbon, and δ15N Variations Driven by Tree Roots.
Identifieur interne : 000023 ( Main/Exploration ); précédent : 000022; suivant : 000024Microbial Community, Newly Sequestered Soil Organic Carbon, and δ15N Variations Driven by Tree Roots.
Auteurs : Wenchen Song [République populaire de Chine] ; Xiaojuan Tong [République populaire de Chine] ; Yanhong Liu [République populaire de Chine] ; Weike Li [République populaire de Chine]Source :
- Frontiers in microbiology [ 1664-302X ] ; 2020.
Abstract
Rhizosphere microbes in forests are key elements of the carbon sequestration of terrestrial ecosystems. To date, little is known about how the diversity and species interactions of the active rhizomicrobial community change during soil carbon sequestration and what interactions drive these changes. In this study, we used a combination of DNA and stable isotope method to explore correlations between the composition of microbial communities, N transformation, and the sequestration de novo of carbon in soils around Pinus tabuliformis and Quercus variabilis roots in North China. Rhizosphere soils from degraded lands, primary stage land (tree roots had colonized in degraded soil for 1 year), and nature forest were sampled for analyses. The results showed that microbial communities and newly sequestered soil organic carbon (SOC) contents changed with different tree species, environments, and successive stages. The fungal unweighted and weighted UniFrac distances could better show the different microbial species structures and differences in successive stages. Newly sequestered SOC was positively correlated with the bacterial order Rhizobiales (in P. tabuliformis forests), the fungal order Russulales (in Q. variabilis forests), and δ15N. Consequently, the bacterial order Rhizobiales acted as an important taxa for P. tabuliformis root-driven carbon sequestration, and the fungal order Russulales acted as an important taxa for Q. variabilis root-driven carbon sequestration. The two plant species allocated root exudates to different portion of their root systems, which in turn altered microbial community composition and function. The δ15N of soil organic matter could be an important indicator to estimate root-driven carbon sequestration.
DOI: 10.3389/fmicb.2020.00314
PubMed: 32174905
PubMed Central: PMC7056912
Affiliations:
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Chinese Academy of Sciences, Beijing, China.</nlm:affiliation><country xml:lang="fr">République populaire de Chine</country><wicri:regionArea>Institute of Microbiology, Chinese Academy of Sciences, Beijing</wicri:regionArea><placeName><settlement type="city">Pékin</settlement></placeName></affiliation></author><author><name sortKey="Tong, Xiaojuan" sort="Tong, Xiaojuan" uniqKey="Tong X" first="Xiaojuan" last="Tong">Xiaojuan Tong</name><affiliation wicri:level="3"><nlm:affiliation>College of Forestry, Beijing Forestry University, Beijing, China.</nlm:affiliation><country xml:lang="fr">République populaire de Chine</country><wicri:regionArea>College of Forestry, Beijing Forestry University, Beijing</wicri:regionArea><placeName><settlement type="city">Pékin</settlement></placeName></affiliation></author><author><name sortKey="Liu, Yanhong" sort="Liu, Yanhong" uniqKey="Liu Y" first="Yanhong" last="Liu">Yanhong Liu</name><affiliation wicri:level="3"><nlm:affiliation>Key Laboratory for Forest Resources and Ecosystem Processes of Beijing, Beijing Forestry University, Beijing, China.</nlm:affiliation><country xml:lang="fr">République populaire de Chine</country><wicri:regionArea>Key Laboratory for Forest Resources and Ecosystem Processes of Beijing, Beijing Forestry University, Beijing</wicri:regionArea><placeName><settlement type="city">Pékin</settlement></placeName></affiliation></author><author><name sortKey="Li, Weike" sort="Li, Weike" uniqKey="Li W" first="Weike" last="Li">Weike Li</name><affiliation wicri:level="3"><nlm:affiliation>College of Forestry, Beijing Forestry University, Beijing, China.</nlm:affiliation><country xml:lang="fr">République populaire de Chine</country><wicri:regionArea>College of Forestry, Beijing Forestry University, Beijing</wicri:regionArea><placeName><settlement type="city">Pékin</settlement></placeName></affiliation></author></analytic><series><title level="j">Frontiers in microbiology</title><idno type="ISSN">1664-302X</idno><imprint><date when="2020" type="published">2020</date></imprint></series></biblStruct></sourceDesc></fileDesc><profileDesc><textClass></textClass></profileDesc></teiHeader><front><div type="abstract" xml:lang="en">Rhizosphere microbes in forests are key elements of the carbon sequestration of terrestrial ecosystems. To date, little is known about how the diversity and species interactions of the active rhizomicrobial community change during soil carbon sequestration and what interactions drive these changes. In this study, we used a combination of DNA and stable isotope method to explore correlations between the composition of microbial communities, N transformation, and the sequestration <i>de novo</i> of carbon in soils around <i>Pinus tabuliformis</i> and <i>Quercus variabilis</i> roots in North China. Rhizosphere soils from degraded lands, primary stage land (tree roots had colonized in degraded soil for 1 year), and nature forest were sampled for analyses. The results showed that microbial communities and newly sequestered soil organic carbon (SOC) contents changed with different tree species, environments, and successive stages. The fungal unweighted and weighted UniFrac distances could better show the different microbial species structures and differences in successive stages. Newly sequestered SOC was positively correlated with the bacterial order <i>Rhizobiales</i> (in <i>P. tabuliformis</i> forests), the fungal order Russulales (in <i>Q. variabilis</i> forests), and δ<sup>15</sup>N. Consequently, the bacterial order <i>Rhizobiales</i> acted as an important taxa for <i>P. tabuliformis</i> root-driven carbon sequestration, and the fungal order Russulales acted as an important taxa for <i>Q. variabilis</i> root-driven carbon sequestration. The two plant species allocated root exudates to different portion of their root systems, which in turn altered microbial community composition and function. The δ<sup>15</sup>N of soil organic matter could be an important indicator to estimate root-driven carbon sequestration.</div></front></TEI><pubmed><MedlineCitation Status="PubMed-not-MEDLINE" Owner="NLM"><PMID Version="1">32174905</PMID><DateRevised><Year>2020</Year><Month>09</Month><Day>28</Day></DateRevised><Article PubModel="Electronic-eCollection"><Journal><ISSN IssnType="Print">1664-302X</ISSN><JournalIssue CitedMedium="Print"><Volume>11</Volume><PubDate><Year>2020</Year></PubDate></JournalIssue><Title>Frontiers in microbiology</Title><ISOAbbreviation>Front Microbiol</ISOAbbreviation></Journal><ArticleTitle>Microbial Community, Newly Sequestered Soil Organic Carbon, and δ<sup>15</sup>N Variations Driven by Tree Roots.</ArticleTitle><Pagination><MedlinePgn>314</MedlinePgn></Pagination><ELocationID EIdType="doi" ValidYN="Y">10.3389/fmicb.2020.00314</ELocationID><Abstract><AbstractText>Rhizosphere microbes in forests are key elements of the carbon sequestration of terrestrial ecosystems. To date, little is known about how the diversity and species interactions of the active rhizomicrobial community change during soil carbon sequestration and what interactions drive these changes. In this study, we used a combination of DNA and stable isotope method to explore correlations between the composition of microbial communities, N transformation, and the sequestration <i>de novo</i> of carbon in soils around <i>Pinus tabuliformis</i> and <i>Quercus variabilis</i> roots in North China. Rhizosphere soils from degraded lands, primary stage land (tree roots had colonized in degraded soil for 1 year), and nature forest were sampled for analyses. The results showed that microbial communities and newly sequestered soil organic carbon (SOC) contents changed with different tree species, environments, and successive stages. The fungal unweighted and weighted UniFrac distances could better show the different microbial species structures and differences in successive stages. Newly sequestered SOC was positively correlated with the bacterial order <i>Rhizobiales</i> (in <i>P. tabuliformis</i> forests), the fungal order Russulales (in <i>Q. variabilis</i> forests), and δ<sup>15</sup>N. Consequently, the bacterial order <i>Rhizobiales</i> acted as an important taxa for <i>P. tabuliformis</i> root-driven carbon sequestration, and the fungal order Russulales acted as an important taxa for <i>Q. variabilis</i> root-driven carbon sequestration. The two plant species allocated root exudates to different portion of their root systems, which in turn altered microbial community composition and function. The δ<sup>15</sup>N of soil organic matter could be an important indicator to estimate root-driven carbon sequestration.</AbstractText><CopyrightInformation>Copyright © 2020 Song, Tong, Liu and Li.</CopyrightInformation></Abstract><AuthorList CompleteYN="Y"><Author ValidYN="Y"><LastName>Song</LastName><ForeName>Wenchen</ForeName><Initials>W</Initials><AffiliationInfo><Affiliation>College of Forestry, Beijing Forestry University, Beijing, China.</Affiliation></AffiliationInfo><AffiliationInfo><Affiliation>Institute of Microbiology, Chinese Academy of Sciences, Beijing, China.</Affiliation></AffiliationInfo></Author><Author ValidYN="Y"><LastName>Tong</LastName><ForeName>Xiaojuan</ForeName><Initials>X</Initials><AffiliationInfo><Affiliation>College of Forestry, Beijing Forestry University, Beijing, China.</Affiliation></AffiliationInfo></Author><Author ValidYN="Y"><LastName>Liu</LastName><ForeName>Yanhong</ForeName><Initials>Y</Initials><AffiliationInfo><Affiliation>Key Laboratory for Forest Resources and Ecosystem Processes of Beijing, Beijing Forestry University, Beijing, China.</Affiliation></AffiliationInfo></Author><Author ValidYN="Y"><LastName>Li</LastName><ForeName>Weike</ForeName><Initials>W</Initials><AffiliationInfo><Affiliation>College of Forestry, Beijing Forestry University, Beijing, China.</Affiliation></AffiliationInfo></Author></AuthorList><Language>eng</Language><PublicationTypeList><PublicationType UI="D016428">Journal Article</PublicationType></PublicationTypeList><ArticleDate DateType="Electronic"><Year>2020</Year><Month>02</Month><Day>27</Day></ArticleDate></Article><MedlineJournalInfo><Country>Switzerland</Country><MedlineTA>Front Microbiol</MedlineTA><NlmUniqueID>101548977</NlmUniqueID><ISSNLinking>1664-302X</ISSNLinking></MedlineJournalInfo><KeywordList Owner="NOTNLM"><Keyword MajorTopicYN="N">13C isotopic tracing</Keyword><Keyword MajorTopicYN="N">15N isotopic tracing</Keyword><Keyword MajorTopicYN="N">carbon sequestration</Keyword><Keyword 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uniqKey="Song W" first="Wenchen" last="Song">Wenchen Song</name><name sortKey="Tong, Xiaojuan" sort="Tong, Xiaojuan" uniqKey="Tong X" first="Xiaojuan" last="Tong">Xiaojuan Tong</name></country></tree></affiliations></record>Pour manipuler ce document sous Unix (Dilib)
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