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Tracking carbon from the atmosphere to the rhizosphere

In English

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

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