Tracking carbon from the atmosphere to the rhizosphere
Författare
Summary, in English
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.
Publiceringsår
2005
Språk
Engelska
Sidor
1264-1270
Publikation/Tidskrift/Serie
Ecology Letters
Volym
8
Issue
12
Länkar
Dokumenttyp
Artikel i tidskrift
Förlag
Wiley-Blackwell
Ämne
- Ecology
Nyckelord
- Plantago lanceolata
- intraradices
- Glomus
- carbon cycling
- C-13
- arbuscular mycorrhiza
- bacteria
- signature fatty acids
- stable isotope
Status
Published
Forskningsgrupp
- Microbial Ecology
- Plant Biology
ISBN/ISSN/Övrigt
- ISSN: 1461-023X