The ecology and functioning of vesicular-arbuscular mycorrhizas in co-existing grassland species. 2. Nutrient uptake and growth of vesicular-arbuscular mycorrhizal plants in a semi-natural grassland

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Type
Article: article from journal or magazin.
Collection
Publications
Title
The ecology and functioning of vesicular-arbuscular mycorrhizas in co-existing grassland species. 2. Nutrient uptake and growth of vesicular-arbuscular mycorrhizal plants in a semi-natural grassland
Journal
New Phytologist
Author(s)
Sanders I.R., Fitter A.H.
ISSN
0028-646X
Publication state
Published
Issued date
1992
Volume
120
Number
4
Pages
525-533
Language
english
Notes
HR173 NEW PHYTOL
Abstract
Although vesicular-arbuscular mycorrhizas (VAM) are abundant in natural ecosystems the evidence for the mutualistic effect of this association under field conditions is conflicting. VAM infection and inflow of phosphorus copper zinc and manganese was measured in six co-existing plant species of a semi-natural grassland during a 2-yr period in order to establish whether patterns of nutrient uptake and plant growth in co-existing species can be related to levels of mycorrhizal infection. There was no relationship between VAM infection and shoot concentrations of P Cu Zn or Mn or plant biomass and only in a few cases was nutrient inflow related to infection. Although the results do not support the hypothesis that VAM infection is beneficial for plant nutrition high levels of P inflow do occur at certain periods during the growth season suggesting that mycorrhizas may promote plant nutrient uptake at these times. Owing to the abundance of VAM the lack of speciation and high P inflows which can occur in the field these mycorrhizal associations are likely to be mutualistic.
Keywords
VA mycorrhizas, P inflow, grassland ecology, co-existence
Web of science
Open Access
Yes
Create date
24/01/2008 17:38
Last modification date
20/08/2019 12:37
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