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- Title
Carbon partitioning in a split-root system of arbuscular mycorrhizal plants is fungal and plant species dependent.
- Authors
Lerat, Sylvain; Lapointe, Line; Gutjahr, Sylvain; Piché, Yves; Vierheilig, Horst
- Abstract
Summary • Root carbon (C) partitioning in two host plant species colonized by one of three arbuscular mycorrhizal (AM) fungal species was investigated. • Split-root systems of barley (Hordeum vulgare ) and sugar maple (Acer saccharum ) were inoculated on one side with one of three AM fungi. Leaves were labelled with 14 CO2 3 wk after inoculation. Plants were harvested 24 h later and the root systems from the mycorrhizal (M) and nonmycorrhizal (NM) sides were analysed separately for 14 C. • Partitioning of 14 C between M and NM sides varied depending on the fungal and host plant species used. Gigaspora rosea showed a strong C-sink capacity with both plant species, Glomus intraradices showed a strong C-sink capacity with barley, and Glomus mosseae did not affect 14 C partitioning. The C-sink strength of the M barley roots inoculated with G. rosea or G. intraradices was linearly correlated with the degree of colonization. • The use of three AM fungal and two plant species allowed us to conclude that C-sink strength of AM fungi depends on both partners involved in the symbiosis.
- Subjects
MYCORRHIZAL fungi; CARBON; SUGAR maple
- Publication
New Phytologist, 2003, Vol 157, Issue 3, p589
- ISSN
0028-646X
- Publication type
Article
- DOI
10.1046/j.1469-8137.2003.00691.x