Interaction among Arachis hypogaea L. (peanut) and beneficial soil microorganisms: how much is it known?

Abstract

The leguminous crop Arachis hypogaea L. (peanut) is originally from South America and then was disseminated to tropical and subtropical regions. The dissemination of the crop resulted in peanut plants establishing a symbiotic nitrogen-fixing relationship with a wide diversity of indigenous soil bacteria. We present in this review, advances on the molecular basis for the crack-entry infection process involved in the peanut-rhizobia interaction, the diversity of rhizobial and fungal antagonistic bacteria associated with peanut plants, the effect of abiotic and biotic stresses on this interaction and the response of peanut to inoculation.

Keywords::

• Peanut
• Arachis hypogaea L.
• Rhizobium
• Bradyrhizobium
• symbiosis
• nodulation
• nitrogen fixation
• Plant Growth Promoting Bacteria (PGPB)
• abiotic stress

Acknowledgements

We are grateful to Dr. Yaacov Okon for helpful comments during the preparation of manuscript.

Declaration of interest

Financial assistance was provided by SECyT-UNRC, ANPCyT, FONCYT, CONICET and ACC (Argentina). Fabra, A., Taurian, T., Angelini, J. and Dardanelli, M. are members of the research career of CONICET, Argentina. Ibáñez, F., Tonelli, M. and Bianucci, E. are fellowships from CONICET (Argentina).