The mycorrhizosphere effect: a multitrophic interaction complex improves mycorrhizal symbiosis and plant growth

Duponnois Robin, Galiana Antoine, Prin Yves. 2008. The mycorrhizosphere effect: a multitrophic interaction complex improves mycorrhizal symbiosis and plant growth. In : Mycorrhizae : sustainable agriculture and forestry. Siddiqui Zaki Anwar (ed.), Akhtar Mohd Sayeed (ed.), Futai Kazuyoshi (ed.). Berlin : Springer [Allemagne], 227-240. ISBN 978-1-4020-8769-1

Résumé : Mycorrhizal fungi are essential components of sustainable soil-plant systems. Hyphae of arbuscular mycorrhizal (AM) fungi play important role in the formation and stability of soil aggregates and contribute to the composition of plant community structures. Mycorrhizal symbiosis generally increases root exudation and influences rhizosphere microbial communities. Mycorrhizal hyphae exude chemical compounds that have a selective effect on the microbial communities in the rhizosphere and in the soil. These microbial compartments are commonly named "mycorrhizosphere" and there has been increasing evidence that the mycorrhizosphere communities have an important role in plant growth and soil fertility. For instance, it has been demonstrated that mycorrhizal fungi had a selective effect on bacteria potentially beneficial to the symbiosis and to the plants. Hence, mycorrhizal symbiosis provides a microbial complex regulated by multitrophic interactions. This fungal symbiosis had an indirect effect on plant growth through its selective pressure on mycorrhizosphere communities in addition to its classical direct effect. This chapter presents highlights on multitrophic interactions and its importance in sustainable agriculture, especially in tropical and mediterranean countries.

Mots-clés Agrovoc : Mycorhizé

Classification Agris : P34 - Biologie du sol
P35 - Fertilité du sol
F62 - Physiologie végétale - Croissance et développement

Champ stratégique Cirad : Axe 1 (2005-2013) - Intensification écologique

Auteurs et affiliations

• Duponnois Robin, IRD (SEN)
• Galiana Antoine, CIRAD-BIOS-UMR LSTM (FRA) ORCID: 0000-0002-5293-5049
• Prin Yves, CIRAD-BIOS-UMR LSTM (FRA) ORCID: 0000-0002-3706-0045

Source : Cirad - Agritrop (https://agritrop.cirad.fr/546202/)

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