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Effects of compost addition on extra-radical growth of arbuscular mycorrhizal fungi in Acacia tortilis ssp raddiana savanna in a pre-Saharan area

Labidi, S; Nasr, H; Zouaghi, M and Wallander, Håkan LU (2007) In Agriculture, Ecosystems & Environment. Applied Soil Ecology 35(1). p.184-192
Abstract
We studied the influence of added compost, consisting of Acacia cyanophylla leaves, on the production of extra-radical mycelia of arbuscular mycorrhizal (AM) fungi in natural stands of Acacia tortilis, which forms a desert savanna. Four different plots with different soil characteristics in terms of nutrient level and water-holding capacity were included in the study. The production of AM fungi was measured as the increase in the amount of the phospholipid fatty acid (PLFA) 16:1 omega 5 and the neutral lipid fatty acid (NLFA) 16:1 omega 5 in mesh bags placed in the root zone of A. tortilis trees. The production of AM mycelia was much higher at the site with the highest nutrient level and highest water holding capacity. Principal component... (More)
We studied the influence of added compost, consisting of Acacia cyanophylla leaves, on the production of extra-radical mycelia of arbuscular mycorrhizal (AM) fungi in natural stands of Acacia tortilis, which forms a desert savanna. Four different plots with different soil characteristics in terms of nutrient level and water-holding capacity were included in the study. The production of AM fungi was measured as the increase in the amount of the phospholipid fatty acid (PLFA) 16:1 omega 5 and the neutral lipid fatty acid (NLFA) 16:1 omega 5 in mesh bags placed in the root zone of A. tortilis trees. The production of AM mycelia was much higher at the site with the highest nutrient level and highest water holding capacity. Principal component analysis revealed that mesh bags from this plot had proportionally more PLFA 16:1 omega 5 than the other plots, indicating that this plot contained proportionally more AM fungi in the microbial community. Compost addition enhanced the production of AM mycelia in all plots although the response was greatest in the plot with the highest proportion of AM fungi. The beneficial effect of compost addition on growth of the AM fungal biomass found in this study could be one way to improve survival of planted seedlings in and regions. We suggest that indigenous AM fungi, which are adapted to the limiting conditions in the plots, are the preferable source of inoculum for improving the growth of A. tortilis in plantations in pre-Saharan ecosystems. (Less)
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author
organization
publishing date
type
Contribution to journal
publication status
published
subject
in
Agriculture, Ecosystems & Environment. Applied Soil Ecology
volume
35
issue
1
pages
184 - 192
publisher
Elsevier
external identifiers
  • wos:000242761500018
  • scopus:33751240109
ISSN
0929-1393
DOI
10.1016/j.apsoil.2006.04.009
language
English
LU publication?
yes
id
932a32d1-fc27-4f25-bf74-3d6d665e5637 (old id 167097)
date added to LUP
2007-06-29 11:52:17
date last changed
2017-01-01 04:43:52
@article{932a32d1-fc27-4f25-bf74-3d6d665e5637,
  abstract     = {We studied the influence of added compost, consisting of Acacia cyanophylla leaves, on the production of extra-radical mycelia of arbuscular mycorrhizal (AM) fungi in natural stands of Acacia tortilis, which forms a desert savanna. Four different plots with different soil characteristics in terms of nutrient level and water-holding capacity were included in the study. The production of AM fungi was measured as the increase in the amount of the phospholipid fatty acid (PLFA) 16:1 omega 5 and the neutral lipid fatty acid (NLFA) 16:1 omega 5 in mesh bags placed in the root zone of A. tortilis trees. The production of AM mycelia was much higher at the site with the highest nutrient level and highest water holding capacity. Principal component analysis revealed that mesh bags from this plot had proportionally more PLFA 16:1 omega 5 than the other plots, indicating that this plot contained proportionally more AM fungi in the microbial community. Compost addition enhanced the production of AM mycelia in all plots although the response was greatest in the plot with the highest proportion of AM fungi. The beneficial effect of compost addition on growth of the AM fungal biomass found in this study could be one way to improve survival of planted seedlings in and regions. We suggest that indigenous AM fungi, which are adapted to the limiting conditions in the plots, are the preferable source of inoculum for improving the growth of A. tortilis in plantations in pre-Saharan ecosystems.},
  author       = {Labidi, S and Nasr, H and Zouaghi, M and Wallander, Håkan},
  issn         = {0929-1393},
  language     = {eng},
  number       = {1},
  pages        = {184--192},
  publisher    = {Elsevier},
  series       = {Agriculture, Ecosystems & Environment. Applied Soil Ecology},
  title        = {Effects of compost addition on extra-radical growth of arbuscular mycorrhizal fungi in Acacia tortilis ssp raddiana savanna in a pre-Saharan area},
  url          = {http://dx.doi.org/10.1016/j.apsoil.2006.04.009},
  volume       = {35},
  year         = {2007},
}