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BioMed Research International
Volume 2013 (2013), Article ID 948258, 9 pages
http://dx.doi.org/10.1155/2013/948258
Review Article

Use of Frankia and Actinorhizal Plants for Degraded Lands Reclamation

1Laboratoire Mixte International Adaptation des Plantes et Microorganismes Associés aux Stress Environnementaux (LAPSE), 1386 Dakar, Senegal
2Laboratoire Commun de Microbiologie IRD/ISRA/UCAD, 1386 Dakar, Senegal
3Institute of Forest Genetics and Tree Breeding, Forest Campus, R. S. Puram, Coimbatore 641 002, India
4Département de Biologie Végétale, Université Cheikh Anta Diop (UCAD), 5005 Dakar, Senegal
5Equipe Rhizogenèse, UMR DIADE, IRD, 911 Avenue Agropolis, 34394 Montpellier Cedex 5, France

Received 24 May 2013; Revised 23 September 2013; Accepted 25 September 2013

Academic Editor: Himanshu Garg

Copyright © 2013 Nathalie Diagne et al. This is an open access article distributed under the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.

Abstract

Degraded lands are defined by soils that have lost primary productivity due to abiotic or biotic stresses. Among the abiotic stresses, drought, salinity, and heavy metals are the main threats in tropical areas. These stresses affect plant growth and reduce their productivity. Nitrogen-fixing plants such as actinorhizal species that are able to grow in poor and disturbed soils are widely planted for the reclamation of such degraded lands. It has been reported that association of soil microbes especially the nitrogen-fixing bacteria Frankia with these actinorhizal plants can mitigate the adverse effects of abiotic and biotic stresses. Inoculation of actinorhizal plants with Frankia significantly improves plant growth, biomass, shoot and root N content, and survival rate after transplanting in fields. However, the success of establishment of actinorhizal plantation in degraded sites depends upon the choice of effective strains of Frankia. Studies related to the beneficial role of Frankia on the establishment of actinorhizal plants in degraded soils are scarce. In this review, we describe some examples of the use of Frankia inoculation to improve actinorhizal plant performances in harsh conditions for reclamation of degraded lands.