Herrmann Laetitia, Lesueur Didier, Bräu Lambert, Davison John, Jairus Teele, Robain Henri, Robin Agnès, Vasar Martti, Wiriyakitnateekul Wanpen, Öpik Maarja. 2016. Diversity of root-associated arbuscular mycorrhizal fungal communities in a rubber tree plantation chronosequence in Northeast Thailand. Mycorrhiza, 26 (8) : 863-877.
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Quartile : Q2, Sujet : MYCOLOGY
Résumé : Rubber tree (Hevea brasiliensis) is of major economic importance in Southeast Asia and for small land holders in Thailand in particular. Due to the high value of latex, plantations are expanding into unsuitable areas, such as the northeast province of Thailand where soil fertility is very low and therefore appropriate management practices are of primary importance. Arbuscular mycorrhizal fungi (AMF) contribute to plant growth through a range of mechanisms and could play a key role in a more sustainable management of the rubber plantations. We described the diversity of AMF associated with rubber tree roots in Northeast Thailand in relation to tree age and soil parameters along a chronosequence of rubber tree plantations. Cassava fields were included for comparison. Rubber tree and cassava roots harbored high diversity of AMF (111 Virtual Taxa, VT), including 20 novel VT. AMF VT richness per sample was consistently high (per site mean 16 to 21 VT per sample) along the chronosequence and was not related to soil properties. The composition of AMF communities differed between cassava and rubber tree plantations and was influenced by soil texture and nutrient content (sand, K, P, Ca). AMF community composition gradually shifted with the age of the trees. Our results suggest that the high diversity of AMF in this region is potentially significant for maintaining high functionality of AMF communities.
Mots-clés Agrovoc : Hevea brasiliensis, manioc, mycorhizé à vésicule et arbuscule, communauté végétale, variation génétique, inoculation, croissance, analyse de tissu foliaire, analyse de sol, Glomus, Acaulospora, Scutellospora, fertilité du sol, teneur en éléments minéraux, agroécologie, agroécosystème
Mots-clés géographiques Agrovoc : Thaïlande
Mots-clés libres : Rubber tree, Hevea brasiliensis, Arbuscular, Mycorrhizal fungi, Community, Chronosequence, Diversity
Classification Agris : P34 - Biologie du sol
K10 - Production forestière
Champ stratégique Cirad : Axe 1 (2014-2018) - Agriculture écologiquement intensive
Auteurs et affiliations
- Herrmann Laetitia, Deakin University (AUS)
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Lesueur Didier, CIRAD-PERSYST-UMR Eco&Sols (THA)
ORCID: 0000-0002-6694-0869
- Bräu Lambert, Deakin University (AUS)
- Davison John, University of Tartu (EST)
- Jairus Teele, University of Tartu (EST)
- Robain Henri, IRD (THA)
- Robin Agnès, CIRAD-PERSYST-UMR Eco&Sols (BRA)
- Vasar Martti, University of Tartu (EST)
- Wiriyakitnateekul Wanpen, Ministry of Agriculture and Cooperatives (Thaïlande) (THA)
- Öpik Maarja, University of Tartu (EST)
Source : Cirad-Agritrop (https://agritrop.cirad.fr/581579/)
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