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Tracking carbon fro...
Tracking carbon from the atmosphere to the rhizosphere
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- Olsson, Pål Axel (author)
- Lund University,Lunds universitet,Biodiversitet,Biologiska institutionen,Naturvetenskapliga fakulteten,Biodiversity,Department of Biology,Faculty of Science
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- Johnson, Nancy (author)
- Lund University,Lunds universitet,Biologiska institutionen,Naturvetenskapliga fakulteten,Department of Biology,Faculty of Science
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(creator_code:org_t)
- Wiley, 2005
- 2005
- English.
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In: Ecology Letters. - : Wiley. - 1461-023X .- 1461-0248. ; 8:12, s. 1264-1270
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http://dx.doi.org/10...
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Abstract
Subject headings
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- Turnover rates of arbuscular mycorrhizal (AM) fungi may influence storage of soil organic carbon (SOC). We examined the longevity of AM hyphae in monoxenic cultures; and we also used C-13 incorporation into signature fatty acids to study C dynamics in a mycorrhizal symbiosis involving Glomus intraradices and Plantago lanceolata. C-13 enrichment of signature fatty acids showed rapid transfer of plant assimilates to AM fungi and a gradual release of C from roots to rhizosphere bacteria, but at a much slower rate. Furthermore, most C assimilated by AM fungi remained 32 days after labelling. These findings indicate that C-13 labelled fatty acids can be used to track C flux from the atmosphere to the rhizosphere and that retention of C in AM fungal mycelium may contribute significantly to SOC.
Subject headings
- NATURVETENSKAP -- Biologi -- Ekologi (hsv//swe)
- NATURAL SCIENCES -- Biological Sciences -- Ecology (hsv//eng)
Keyword
- Plantago lanceolata
- intraradices
- Glomus
- carbon cycling
- C-13
- arbuscular mycorrhiza
- bacteria
- signature fatty acids
- stable isotope
Publication and Content Type
- art (subject category)
- ref (subject category)
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