Frankia-actinorhizal symbiosis: A non-chemical biological assemblage for enhanced plant growth, nodulation and reclamation of degraded soils

Bhattacharyya Pranaba Nanda, Islam Nazim Forid, Sarma Bhaskar, Nath Bharat Chandra, Tawfeeq Al-Ani Laith Khalil, Lesueur Didier. 2024. Frankia-actinorhizal symbiosis: A non-chemical biological assemblage for enhanced plant growth, nodulation and reclamation of degraded soils. Symbiosis, 92 : 1-26.

Résumé : Actinorhizal symbiosis naturally harbours beneficial categories of diverse plant growth promoting microorganisms (PGPMs), including the Frankia species. The beneficial microorganisms can be used as efficient, non-chemical and sustainable alternatives for adopting effective soil restoration programmes and revegetation schedules in chemical and industrial-contaminated sites, including treating degraded lands contaminated with toxic chemicals and pesticides. It has been proposed that the interactions between the microbial gene pool are of immense agricultural significance that would facilitate an improvement in the health, hygiene and nutrient acquisition pathway of native soil. The present review is focused on exploiting the hitherto-unexplored Frankia-actinorhizal symbiosis with due interest for their application in soil restoration programmes, including the reclamation of degraded lands. This opens up new insights for the development of sustainability in forestry and plantation research. Additionally, it would promise an improvement in plant growth and vigour, hygiene, and other parameters related to crop yield, such as plant biomass, root/shoot ratio, crop yield, and so on. Novel and putative microorganisms isolated from the actinorhizal may be used for bio-transformation of allelochemicals and toxic heavy metals into compounds with modified biological properties, opening up novel avenues for mediating microbial degradation of putative allelochemicals that would otherwise accumulate at phytotoxic levels in soil. Endophyte-host specificities, the phylogeny of Frankia, and the conservation of unique endemic plant genetic resources like actinorhizal plants, are of paramount significance in the advancement of genomics, metabolomics and phenomics.

Mots-clés Agrovoc : Frankia, récupération des sols, plante pour restauration du sol, micro-organisme du sol, symbiose, ressource génétique végétale, Fixation de l'azote, biologie du sol, restauration couverture végétale, conservation des ressources génétiques, contamination chimique, dégradation du sol, phylogénie, dégradation chimique, biodiversité

Mots-clés libres : Actinorizal plants, Soil restoration, Frankia-actinorhizal symbiosis, Plant growth promoting agents, Biotransformation, Genomics, Microbial gene pool, Plant growth promoting microorganisms (PGPMs)

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

Champ stratégique Cirad : CTS 2 (2019-) - Transitions agroécologiques

Auteurs et affiliations

• Bhattacharyya Pranaba Nanda, Nanda Nath Saikia College (IND) - auteur correspondant
• Islam Nazim Forid, Nanda Nath Saikia College (IND)
• Sarma Bhaskar, Dhemaji College (IND)
• Nath Bharat Chandra, AAU (IND)
• Tawfeeq Al-Ani Laith Khalil, University of Baghdad (IRQ)
• Lesueur Didier, CIRAD-PERSYST-UMR Eco&Sols (VNM) ORCID: 0000-0002-6694-0869

Source : Cirad-Agritrop (https://agritrop.cirad.fr/608059/)

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