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Potential of Bioremediation and PGP Traits in Streptomyces as Strategies for Bio-Reclamation of Salt-Affected Soils for Agriculture

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Instituto de Investigaciones para la Industria Química (INIQUI), Universidad Nacional de Salta (UNSa)-Consejo Nacional de Investigaciones Científicas y Técnicas (CONICET). Av. Bolivia 5150, Salta 4400, Argentina
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Facultad de Ingeniería, UNSa, Salta 4400, Argentina
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Facultad de Ciencias Naturales, UNSa, Salta 4400, Argentina
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Singapore Centre for Environmental Life Sciences Engineering (SCELSE), School of Biological Sciences, Nanyang Technological University, 639798 Singapore, Singapore
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Author to whom correspondence should be addressed.
Pathogens 2020, 9(2), 117; https://doi.org/10.3390/pathogens9020117
Received: 15 December 2019 / Revised: 31 January 2020 / Accepted: 8 February 2020 / Published: 13 February 2020
(This article belongs to the Special Issue Streptomyces Microbiomes in Agriculture)
Environmental limitations influence food production and distribution, adding up to global problems like world hunger. Conditions caused by climate change require global efforts to be improved, but others like soil degradation demand local management. For many years, saline soils were not a problem; indeed, natural salinity shaped different biomes around the world. However, overall saline soils present adverse conditions for plant growth, which then translate into limitations for agriculture. Shortage on the surface of productive land, either due to depletion of arable land or to soil degradation, represents a threat to the growing worldwide population. Hence, the need to use degraded land leads scientists to think of recovery alternatives. In the case of salt-affected soils (naturally occurring or human-made), which are traditionally washed or amended with calcium salts, bio-reclamation via microbiome presents itself as an innovative and environmentally friendly option. Due to their low pathogenicity, endurance to adverse environmental conditions, and production of a wide variety of secondary metabolic compounds, members of the genus Streptomyces are good candidates for bio-reclamation of salt-affected soils. Thus, plant growth promotion and soil bioremediation strategies combine to overcome biotic and abiotic stressors, providing green management options for agriculture in the near future.
Keywords: actinomycetes; bioremediation; boron compounds; salt-affected soils; plant growth-promoting (PGP) actinomycetes; bioremediation; boron compounds; salt-affected soils; plant growth-promoting (PGP)
MDPI and ACS Style

Romano-Armada, N.; Yañez-Yazlle, M.F.; Irazusta, V.P.; Rajal, V.B.; Moraga, N.B. Potential of Bioremediation and PGP Traits in Streptomyces as Strategies for Bio-Reclamation of Salt-Affected Soils for Agriculture. Pathogens 2020, 9, 117.

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