Record ID No. |
2734 |
Author(s) |
Nottingham A T., Turner B L., Winter K., Heijden M G A. van der Tanner E V J. , 2010. |
Affiliation |
Department of Plant Sciences, University of Cambridge, Downing Street, Cambridge CB2 3EA, UK. atn24@cam.ac.uk |
Title |
Arbuscular mycorrhizal mycelial respiration in a moist tropical forest. |
Source. Vol.(no):Page |
New Phytologist. 186(4): 957-967p. |
Categories |
Arbuscular Mycorrhiza |
Subjects |
Soil plant relations |
Sub-subjects |
Plantations |
Host |
Plants |
Organism |
Pseudobombax septenatum, AMF |
Country |
UK., Europe. |
Abstracts |
Arbuscular mycorrhizal fungi (AMF) are widespread in tropical forests and represent a major sink of photosynthate, yet their contribution to soil respiration in such ecosystems remains unknown. Using in-growth mesocosms we measured AMF mycelial respiration in two separate experiments: (1) an experiment in a semi-evergreen moist tropical forest, and (2) an experiment with 6-m-tall Pseudobombax septenatum in 4.5-m3 containers, for which we also determined the dependence of AMF mycelial respiration on the supply of carbon from the plant using girdling and root-cutting treatments. In the forest, AMF mycelia respired carbon at a rate of 1.4 t ha-1 yr-1, which accounted for 14+or-6% of total soil respiration and 26+or-12% of root-derived respiration. For P. septenatum, 40+or-6% of root-derived respiration originated from AMF mycelia and carbon was respired |