Interactions between bacterial carbon monoxide and hydrogen consumption and plant development on recent volcanic deposits.
Identifieur interne : 000257 ( Main/Exploration ); précédent : 000256; suivant : 000258Interactions between bacterial carbon monoxide and hydrogen consumption and plant development on recent volcanic deposits.
Auteurs : Gary M. King [États-Unis] ; Carolyn F. WeberSource :
- The ISME journal [ 1751-7362 ] ; 2008.
Descripteurs français
- KwdFr :
- Bactéries (métabolisme), Fougères (croissance et développement), Hawaï (MeSH), Hydrogène (métabolisme), Magnoliopsida (classification), Magnoliopsida (croissance et développement), Monoxyde de carbone (métabolisme), Myrica (croissance et développement), Myrtaceae (croissance et développement), Éruptions volcaniques (MeSH).
- MESH :
- croissance et développement : Fougères, Magnoliopsida, Myrica, Myrtaceae.
- métabolisme : Bactéries, Hydrogène, Magnoliopsida, Monoxyde de carbone.
- Hawaï, Éruptions volcaniques.
English descriptors
- KwdEn :
- MESH :
- chemical , metabolism : Carbon Monoxide, Hydrogen.
- classification : Magnoliopsida.
- growth & development : Ferns, Magnoliopsida, Myrica, Myrtaceae.
- metabolism : Bacteria.
- Hawaii, Volcanic Eruptions.
Abstract
Patterns of microbial colonization and interactions between microbial processes and vascular plants on volcanic deposits have received little attention. Previous reports have shown that atmospheric CO and hydrogen contribute significantly to microbial metabolism on Kilauea volcano (Hawaii) deposits with varied ages and successional development. Relationships between CO oxidation and plant communities were not clear, however, since deposit age and vegetation status covaried. To determine plant-microbe interactions in deposits of uniform ages, CO and hydrogen dynamics have been assayed for unvegetated tephra on a 1959 deposit at Pu'u Puai (PP-bare), at the edge of tree 'islands' within the PP deposit (PP-edge) and within PP tree islands (PP-canopy). Similar assays have been conducted for vegetated and unvegetated sites on a 1969 Mauna Ulu (MU) lava flow. Net in situ atmospheric CO uptake was highest at PP-edge and PP-bare sites (2.2+/-0.5 and 1.3+/-0.1 mg CO m(-2) day(-1), respectively), and least for PP-canopy (-3.2+/-0.9 mg CO m(-2) day(-1), net emission). Respiration rates, microbial biomass and maximum CO uptake potential showed an opposing pattern. Comparisons of atmospheric CO uptake and CO(2) production rates indicate that CO contributes significantly to microbial metabolism in PP-bare and MU-unvegetated sites, but negligibly where vegetation is well developed. Nonetheless, maximum potential CO uptake rates indicate that CO oxidizer populations increase with increasing plant biomass and consume CO actively. Some of these CO oxidizers may contribute to elevated nitrogen fixation rates (acetylene reduction) measured within tree islands, and thus, support plant successional development.
DOI: 10.1038/ismej.2007.101
PubMed: 18049461
Affiliations:
Links toward previous steps (curation, corpus...)
Le document en format XML
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<author><name sortKey="King, Gary M" sort="King, Gary M" uniqKey="King G" first="Gary M" last="King">Gary M. King</name>
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<author><name sortKey="Weber, Carolyn F" sort="Weber, Carolyn F" uniqKey="Weber C" first="Carolyn F" last="Weber">Carolyn F. Weber</name>
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<profileDesc><textClass><keywords scheme="KwdEn" xml:lang="en"><term>Bacteria (metabolism)</term>
<term>Carbon Monoxide (metabolism)</term>
<term>Ferns (growth & development)</term>
<term>Hawaii (MeSH)</term>
<term>Hydrogen (metabolism)</term>
<term>Magnoliopsida (classification)</term>
<term>Magnoliopsida (growth & development)</term>
<term>Myrica (growth & development)</term>
<term>Myrtaceae (growth & development)</term>
<term>Volcanic Eruptions (MeSH)</term>
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<keywords scheme="KwdFr" xml:lang="fr"><term>Bactéries (métabolisme)</term>
<term>Fougères (croissance et développement)</term>
<term>Hawaï (MeSH)</term>
<term>Hydrogène (métabolisme)</term>
<term>Magnoliopsida (classification)</term>
<term>Magnoliopsida (croissance et développement)</term>
<term>Monoxyde de carbone (métabolisme)</term>
<term>Myrica (croissance et développement)</term>
<term>Myrtaceae (croissance et développement)</term>
<term>Éruptions volcaniques (MeSH)</term>
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<term>Hydrogen</term>
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<keywords scheme="MESH" qualifier="classification" xml:lang="en"><term>Magnoliopsida</term>
</keywords>
<keywords scheme="MESH" qualifier="croissance et développement" xml:lang="fr"><term>Fougères</term>
<term>Magnoliopsida</term>
<term>Myrica</term>
<term>Myrtaceae</term>
</keywords>
<keywords scheme="MESH" qualifier="growth & development" xml:lang="en"><term>Ferns</term>
<term>Magnoliopsida</term>
<term>Myrica</term>
<term>Myrtaceae</term>
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<keywords scheme="MESH" qualifier="metabolism" xml:lang="en"><term>Bacteria</term>
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<keywords scheme="MESH" qualifier="métabolisme" xml:lang="fr"><term>Bactéries</term>
<term>Hydrogène</term>
<term>Magnoliopsida</term>
<term>Monoxyde de carbone</term>
</keywords>
<keywords scheme="MESH" xml:lang="en"><term>Hawaii</term>
<term>Volcanic Eruptions</term>
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<keywords scheme="MESH" xml:lang="fr"><term>Hawaï</term>
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<front><div type="abstract" xml:lang="en">Patterns of microbial colonization and interactions between microbial processes and vascular plants on volcanic deposits have received little attention. Previous reports have shown that atmospheric CO and hydrogen contribute significantly to microbial metabolism on Kilauea volcano (Hawaii) deposits with varied ages and successional development. Relationships between CO oxidation and plant communities were not clear, however, since deposit age and vegetation status covaried. To determine plant-microbe interactions in deposits of uniform ages, CO and hydrogen dynamics have been assayed for unvegetated tephra on a 1959 deposit at Pu'u Puai (PP-bare), at the edge of tree 'islands' within the PP deposit (PP-edge) and within PP tree islands (PP-canopy). Similar assays have been conducted for vegetated and unvegetated sites on a 1969 Mauna Ulu (MU) lava flow. Net in situ atmospheric CO uptake was highest at PP-edge and PP-bare sites (2.2+/-0.5 and 1.3+/-0.1 mg CO m(-2) day(-1), respectively), and least for PP-canopy (-3.2+/-0.9 mg CO m(-2) day(-1), net emission). Respiration rates, microbial biomass and maximum CO uptake potential showed an opposing pattern. Comparisons of atmospheric CO uptake and CO(2) production rates indicate that CO contributes significantly to microbial metabolism in PP-bare and MU-unvegetated sites, but negligibly where vegetation is well developed. Nonetheless, maximum potential CO uptake rates indicate that CO oxidizer populations increase with increasing plant biomass and consume CO actively. Some of these CO oxidizers may contribute to elevated nitrogen fixation rates (acetylene reduction) measured within tree islands, and thus, support plant successional development.</div>
</front>
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<Abstract><AbstractText>Patterns of microbial colonization and interactions between microbial processes and vascular plants on volcanic deposits have received little attention. Previous reports have shown that atmospheric CO and hydrogen contribute significantly to microbial metabolism on Kilauea volcano (Hawaii) deposits with varied ages and successional development. Relationships between CO oxidation and plant communities were not clear, however, since deposit age and vegetation status covaried. To determine plant-microbe interactions in deposits of uniform ages, CO and hydrogen dynamics have been assayed for unvegetated tephra on a 1959 deposit at Pu'u Puai (PP-bare), at the edge of tree 'islands' within the PP deposit (PP-edge) and within PP tree islands (PP-canopy). Similar assays have been conducted for vegetated and unvegetated sites on a 1969 Mauna Ulu (MU) lava flow. Net in situ atmospheric CO uptake was highest at PP-edge and PP-bare sites (2.2+/-0.5 and 1.3+/-0.1 mg CO m(-2) day(-1), respectively), and least for PP-canopy (-3.2+/-0.9 mg CO m(-2) day(-1), net emission). Respiration rates, microbial biomass and maximum CO uptake potential showed an opposing pattern. Comparisons of atmospheric CO uptake and CO(2) production rates indicate that CO contributes significantly to microbial metabolism in PP-bare and MU-unvegetated sites, but negligibly where vegetation is well developed. Nonetheless, maximum potential CO uptake rates indicate that CO oxidizer populations increase with increasing plant biomass and consume CO actively. Some of these CO oxidizers may contribute to elevated nitrogen fixation rates (acetylene reduction) measured within tree islands, and thus, support plant successional development.</AbstractText>
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