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In situ (CO2)-C-13 pulse-labelling of upland grassland demonstrates a rapid pathway of carbon flux from arbuscular mycorrhizal mycelia to the soil

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In situ (CO2)-C-13 pulse-labelling of upland grassland demonstrates a rapid pathway of carbon flux from arbuscular mycorrhizal mycelia to the soil. / Johnson, D; Leake, JR; Ostle, N et al.
In: New Phytologist, Vol. 153, No. 2, 28.02.2002, p. 327-334.

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Johnson D, Leake JR, Ostle N, Ineson P, Read DJ. In situ (CO2)-C-13 pulse-labelling of upland grassland demonstrates a rapid pathway of carbon flux from arbuscular mycorrhizal mycelia to the soil. New Phytologist. 2002 Feb 28;153(2):327-334. doi: 10.1046/j.0028-646X.2001.00316.x

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@article{3c1d8c3ff0c040959f17c544bcab5b88,
title = "In situ (CO2)-C-13 pulse-labelling of upland grassland demonstrates a rapid pathway of carbon flux from arbuscular mycorrhizal mycelia to the soil",
abstract = "The flux of pulse-derived C-13 from upland pasture plants to the external mycelium of their arbuscular mycorrhizal (AM) symbionts was traced and quantified over a 7-d post-labelling period.Mesh cores, which allowed in-growth of native AM mycelium but were impenetrable to roots, were inserted into unlimed and limed plots and the surrounding vegetation was exposed to (CO2)-C-13 at ambient CO2 concentrations.Release of (CO2)-C-13 from cores colonized by AM mycelium peaked 9-14 h after labelling and declined within 24 h after severance of mycelial connections to roots. Between 5 and 8% of carbon lost by plants was respired by AM mycelium over the first 21 h after labelling. Liming increased the amount of carbon fixed by plants and subsequently allocated to fine roots and AM mycelium.The results demonstrate for the first time under field conditions that AM mycelia provide a rapid and important pathway of carbon flux from plants to the soil and atmosphere",
keywords = "C-13, stable isotope, liming, carbon flow, carbon cycling, respiration, arbuscular mycorrhiza, mesh cores",
author = "D Johnson and JR Leake and N Ostle and P Ineson and DJ Read",
year = "2002",
month = feb,
day = "28",
doi = "10.1046/j.0028-646X.2001.00316.x",
language = "English",
volume = "153",
pages = "327--334",
journal = "New Phytologist",
issn = "0028-646X",
publisher = "Wiley",
number = "2",

}

RIS

TY - JOUR

T1 - In situ (CO2)-C-13 pulse-labelling of upland grassland demonstrates a rapid pathway of carbon flux from arbuscular mycorrhizal mycelia to the soil

AU - Johnson, D

AU - Leake, JR

AU - Ostle, N

AU - Ineson, P

AU - Read, DJ

PY - 2002/2/28

Y1 - 2002/2/28

N2 - The flux of pulse-derived C-13 from upland pasture plants to the external mycelium of their arbuscular mycorrhizal (AM) symbionts was traced and quantified over a 7-d post-labelling period.Mesh cores, which allowed in-growth of native AM mycelium but were impenetrable to roots, were inserted into unlimed and limed plots and the surrounding vegetation was exposed to (CO2)-C-13 at ambient CO2 concentrations.Release of (CO2)-C-13 from cores colonized by AM mycelium peaked 9-14 h after labelling and declined within 24 h after severance of mycelial connections to roots. Between 5 and 8% of carbon lost by plants was respired by AM mycelium over the first 21 h after labelling. Liming increased the amount of carbon fixed by plants and subsequently allocated to fine roots and AM mycelium.The results demonstrate for the first time under field conditions that AM mycelia provide a rapid and important pathway of carbon flux from plants to the soil and atmosphere

AB - The flux of pulse-derived C-13 from upland pasture plants to the external mycelium of their arbuscular mycorrhizal (AM) symbionts was traced and quantified over a 7-d post-labelling period.Mesh cores, which allowed in-growth of native AM mycelium but were impenetrable to roots, were inserted into unlimed and limed plots and the surrounding vegetation was exposed to (CO2)-C-13 at ambient CO2 concentrations.Release of (CO2)-C-13 from cores colonized by AM mycelium peaked 9-14 h after labelling and declined within 24 h after severance of mycelial connections to roots. Between 5 and 8% of carbon lost by plants was respired by AM mycelium over the first 21 h after labelling. Liming increased the amount of carbon fixed by plants and subsequently allocated to fine roots and AM mycelium.The results demonstrate for the first time under field conditions that AM mycelia provide a rapid and important pathway of carbon flux from plants to the soil and atmosphere

KW - C-13

KW - stable isotope

KW - liming

KW - carbon flow

KW - carbon cycling

KW - respiration

KW - arbuscular mycorrhiza

KW - mesh cores

U2 - 10.1046/j.0028-646X.2001.00316.x

DO - 10.1046/j.0028-646X.2001.00316.x

M3 - Journal article

VL - 153

SP - 327

EP - 334

JO - New Phytologist

JF - New Phytologist

SN - 0028-646X

IS - 2

ER -