Different sensitivity of a panel of Rhizophagus isolates to AMF-suppressive soils
Cruz-Paredes, Carla LU
; Jakobsen, Iver
and Nybroe, Ole
(2020)
In Applied Soil Ecology
155.
- Abstract
Suppression of the activity of arbuscular mycorrhizal fungi (AMF) in unsterile soils, as determined by transfer of 33P from soils to plants, has been recently demonstrated, and soils differ in their degree of suppressiveness. The previous experiments included only one R. irregularis isolate, BEG87. The aim of this study was to analyze the sensitivity to suppression of different cultivated AMF isolates as well of native AMF communities using shoot 33P content as a proxy of AMF activity in mesh-enclosed patches of unsterile soil. We found that the suppression of a panel of Rhizophagus isolates differed from the suppression of R. irregularis BEG87. Suppression overall correlated with low soil pH and high soil... (More)
Suppression of the activity of arbuscular mycorrhizal fungi (AMF) in unsterile soils, as determined by transfer of 33P from soils to plants, has been recently demonstrated, and soils differ in their degree of suppressiveness. The previous experiments included only one R. irregularis isolate, BEG87. The aim of this study was to analyze the sensitivity to suppression of different cultivated AMF isolates as well of native AMF communities using shoot 33P content as a proxy of AMF activity in mesh-enclosed patches of unsterile soil. We found that the suppression of a panel of Rhizophagus isolates differed from the suppression of R. irregularis BEG87. Suppression overall correlated with low soil pH and high soil phosphorus, but there were large differences between the isolates. Some Rhizophagus isolates were less sensitive to soil suppression than BEG87, and tolerance to suppression may be a relevant property to consider when choosing future AMF inoculants. For native AMF communities showing high root colonization, we found one example of a community that was not suppressed by its ‘home’ soil, while BEG87 activity in that soil was completely suppressed. Hence, some AMF communities appear to be reservoirs for inoculants with high tolerance towards suppression.
(Less)
- author
- Cruz-Paredes, Carla
LU
; Jakobsen, Iver
and Nybroe, Ole
- publishing date
- 2020-11
- type
- Contribution to journal
- publication status
- published
- keywords
- Arbuscular mycorrhizal fungi, Diversity, Inoculants, Root organ cultures, Suppression
- in
- Applied Soil Ecology
- volume
- 155
- article number
- 103662
- pages
- 5 pages
- publisher
- Elsevier
- external identifiers
-
- scopus:85085016674
- ISSN
- 0929-1393
- DOI
- 10.1016/j.apsoil.2020.103662
- language
- English
- LU publication?
- no
- additional info
- Funding Information: We will like to acknowledge Lena Asta Byrgesen and Morten Læssøe Stephensen for their support and help in the laboratory and in the plant growth facilities. This work was supported by Novo Nordisk Foundation [grant number NNF16OC0021576 to I.J]. Publisher Copyright: © 2020 Elsevier B.V.
- id
- 993a5fc4-36e7-4889-a109-1c41f2e50293
- date added to LUP
- 2022-08-26 11:32:36
- date last changed
- 2022-09-05 15:05:35
@article{993a5fc4-36e7-4889-a109-1c41f2e50293,
abstract = {{<p>Suppression of the activity of arbuscular mycorrhizal fungi (AMF) in unsterile soils, as determined by transfer of <sup>33</sup>P from soils to plants, has been recently demonstrated, and soils differ in their degree of suppressiveness. The previous experiments included only one R. irregularis isolate, BEG87. The aim of this study was to analyze the sensitivity to suppression of different cultivated AMF isolates as well of native AMF communities using shoot <sup>33</sup>P content as a proxy of AMF activity in mesh-enclosed patches of unsterile soil. We found that the suppression of a panel of Rhizophagus isolates differed from the suppression of R. irregularis BEG87. Suppression overall correlated with low soil pH and high soil phosphorus, but there were large differences between the isolates. Some Rhizophagus isolates were less sensitive to soil suppression than BEG87, and tolerance to suppression may be a relevant property to consider when choosing future AMF inoculants. For native AMF communities showing high root colonization, we found one example of a community that was not suppressed by its ‘home’ soil, while BEG87 activity in that soil was completely suppressed. Hence, some AMF communities appear to be reservoirs for inoculants with high tolerance towards suppression.</p>}},
author = {{Cruz-Paredes, Carla and Jakobsen, Iver and Nybroe, Ole}},
issn = {{0929-1393}},
keywords = {{Arbuscular mycorrhizal fungi; Diversity; Inoculants; Root organ cultures; Suppression}},
language = {{eng}},
publisher = {{Elsevier}},
series = {{Applied Soil Ecology}},
title = {{Different sensitivity of a panel of Rhizophagus isolates to AMF-suppressive soils}},
url = {{http://dx.doi.org/10.1016/j.apsoil.2020.103662}},
doi = {{10.1016/j.apsoil.2020.103662}},
volume = {{155}},
year = {{2020}},
}