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Abiotic Stress Tolerance Induced by Endophytic PGPR

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Symbiotic Endophytes

Part of the book series: Soil Biology ((SOILBIOL,volume 37))

Abstract

Abiotic stresses, like shortage of water, soil salinity, and extreme temperatures, are a main threat over worldwide agriculture. Plant growth promoter rhizobacteria (PGPR) refers to several bacterial endophytes with alleged positive effects on plant health and growth. Their use has been pursued mainly for agricultural applications to increase yields since three decades ago. Among such purported positive effects is the increase in plants’ resistance to abiotic stresses, both by producing some phytohormones and by inhibiting the production of others. However, albeit the considerable amount of literature produced in the meantime, the progress either in effective yield increases by inoculation with PGPR or in the understanding of the mechanisms involved in the purported beneficial effects has been rather scarce. This review focuses in revising the advancement made in the study of the different mechanisms involved in PGPR beneficial effects related to the diverse abiotic stresses and in finding the reason why the limited success in practical application.

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  1. Laboratorio de Bioquímica Vegetal, Instituto de Biología Agrícola de Mendoza (IBAM), Facultad de Ciencias Agrarias, Consejo Nacional de Investigaciones Científicas y Técnicas-Universidad Nacional de Cuyo, Almirante Brown 500, M5528AHB, Chacras de Coria, Argentina

    Patricia Piccoli & Rubén Bottini

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Correspondence to Rubén Bottini .

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  1. Departamento de Microbiología del Suelo y Sistemas Simbióticos, Estación Experimental del Zaidín (CSIC), Granada, Spain

    Ricardo Aroca

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Piccoli, P., Bottini, R. (2013). Abiotic Stress Tolerance Induced by Endophytic PGPR. In: Aroca, R. (eds) Symbiotic Endophytes. Soil Biology, vol 37. Springer, Berlin, Heidelberg. https://doi.org/10.1007/978-3-642-39317-4_8

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