Arbuscular mycorrhizal soil infectivity in a stand of the wetland tree Pterocarpus officinalis along a salinity gradient

L. Saint-Etienne S. Paul 1 D. Imbert 2 M. Dulormne F. Muller A. Toribio C. Plenchette 3 a M Bâ
1 Georg-August-University [Göttingen]
2 DYNECAR EA 926 - Dynamique des écosystèmes Caraïbe et biologie des espèces associées
3 Laboratoire d'agronomie
Abstract : Pterocarpus officinalis (Jacq.) is the dominant wetland legume tree species of the seasonally flooded swamp forests in Guadeloupe, Lesser Antilles. This tree is periodically exposed to saline and flooded soil conditions. We examined mycorrhizal soil infectivity (most probable number (MPN) values) and arbuscular mycorrhizal (AM) colonization of P. officinalis along the salinity gradient where the salt levels ranged from 26 to 2% and from 22 to 5% at the end of the dry and wet season, respectively. MPN values were higher in the dry season than in the wet season. They decreased when the salt levels increased whatever the season. AM colonization of P. officinalis was well developed (up to 50%) only within the low salinity levels (below 10%) whatever the season. No spores were found in soil cores, suggesting that propagules were only mycelium pieces and/or root fragments of colonized Pterocarpus roots. These AM fungi may be adapted to salt stress and explain the maintenance of the high mycorrhizal inoculum potential in the P. officinalis swamp forest. #
Keywords : Guadeloupe Arbuscular mycorrhizal colonization Swamp forest Salinity Flooding
Document type :
Journal articles
Complete list of metadatas

Cited literature [22 references]  Display  Hide  Download
https://hal.univ-antilles.fr/hal-01964342
Contributor : Daniel Imbert <>
Submitted on : Friday, December 21, 2018 - 10:03:32 PM
Last modification on : Thursday, February 7, 2019 - 4:27:07 PM
Long-term archiving on : Friday, March 22, 2019 - 5:18:29 PM

File

St Etienne et al. 2006.pdf
Files produced by the author(s)

Identifiers

Collections

UNIV-AG | INRA

Citation

L. Saint-Etienne, S. Paul, D. Imbert, M. Dulormne, F. Muller, et al.. Arbuscular mycorrhizal soil infectivity in a stand of the wetland tree Pterocarpus officinalis along a salinity gradient. Forest Ecology and Management, Elsevier, 2006, 232 (1-3), pp.86-89. ⟨10.1016/j.foreco.2006.05.046⟩. ⟨hal-01964342⟩

Export

BibTeX TEI DC DCterms EndNote

Share

Metrics

Record views

64

Files downloads

21

Contact

support.ccsd.cnrs.fr
hal.support@ccsd.cnrs.fr
Logo CCSD