title: Use of Frankia and actinorhizal plants for degraded lands reclamation.
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.
authors.affiliation: Laboratoire Mixte International Adaptation des Plantes et Microorganismes Associés aux Stress Environnementaux (LAPSE), 1386 Dakar, Senegal ; Laboratoire Commun de Microbiologie IRD/ISRA/UCAD, 1386 Dakar, Senegal ; Institute of Forest Genetics and Tree Breeding, Forest Campus, R. S. Puram, Coimbatore 641 002, India.
authors.forename: Nathalie
authors.initials: N
authors.lastname: Diagne
authors.affiliation: Institute of Forest Genetics and Tree Breeding, Forest Campus, R. S. Puram, Coimbatore 641 002, India.
authors.forename: Karthikeyan
authors.initials: K
authors.lastname: Arumugam
authors.affiliation: Laboratoire Mixte International Adaptation des Plantes et Microorganismes Associés aux Stress Environnementaux (LAPSE), 1386 Dakar, Senegal ; Laboratoire Commun de Microbiologie IRD/ISRA/UCAD, 1386 Dakar, Senegal ; Département de Biologie Végétale, Université Cheikh Anta Diop (UCAD), 5005 Dakar, Senegal.
authors.forename: Mariama
authors.initials: M
authors.lastname: Ngom
authors.affiliation: Institute of Forest Genetics and Tree Breeding, Forest Campus, R. S. Puram, Coimbatore 641 002, India.
authors.forename: Mathish
authors.initials: M
authors.lastname: Nambiar-Veetil
authors.affiliation: Equipe Rhizogenèse, UMR DIADE, IRD, 911 Avenue Agropolis, 34394 Montpellier Cedex 5, France.
authors.forename: Claudine
authors.initials: C
authors.lastname: Franche
authors.affiliation: Institute of Forest Genetics and Tree Breeding, Forest Campus, R. S. Puram, Coimbatore 641 002, India.
authors.forename: Krishna Kumar
authors.initials: KK
authors.lastname: Narayanan
authors.affiliation: Laboratoire Mixte International Adaptation des Plantes et Microorganismes Associés aux Stress Environnementaux (LAPSE), 1386 Dakar, Senegal ; Laboratoire Commun de Microbiologie IRD/ISRA/UCAD, 1386 Dakar, Senegal ; Equipe Rhizogenèse, UMR DIADE, IRD, 911 Avenue Agropolis, 34394 Montpellier Cedex 5, France.
authors.forename: Laurent
authors.initials: L
authors.lastname: Laplaze
mesh_terms: D040161:Frankia / Q000378:metabolism*; D006801:Humans; D010944:Plants / Q000378:metabolism* / Q000382:microbiology*; D012987:Soil; D013559:Symbiosis / Q000502:physiology
chemical_list: D012987:Soil