New Isolation Method Of Desiccation-tolerant
Microorganisms For The Bioremediation Of Arid
And Semiarid Soils
Author(s)
M. Manzanera, J. J. Narváez-Reinaldo, L. SantaCruz-Calvo,
J. I. Vílchez, J. González-López & C. Calvo
Abstract
In arid and semiarid regions, the establishment of microorganisms and plants for
the bioremediation of polycyclic aromatic hydrocarbons (PAHs) is further
impeded by a number of physicochemical factors including low precipitation,
high evaporation, high winds and extreme temperatures. These factors contribute
to the extremely low water content in soil and reduce the survival of most of the
microbial isolates with a role in the bioremediation of soils. We have developed
a new technology based on the ability of anhydrobiotic microorganisms to
withstand desiccation and the remarkable stability they display in a dried state.
Because of their ability to survive without water and to promote plant growth
under water stressing conditions, we have used this tolerance for the isolation of
a collection of new desiccation-tolerant microorganisms that could be useful for
the treatment of PAH-polluted soils in arid and semiarid regions.
Keywords: anhydrobiosis, polycyclic aromatic hydrocarbons, arid and semiarid
soils, bioremediation, PGPR.
1 Introduction
Rhizoremediation combines the use of plants and microorganisms for the
removal of pollutants. In this process, the microbes present in the rhizosphere of
plants used during the bioremediation process provide an important contribution
to the degradation of such pollutants [1, 2]. This technique has been extensively
used for the treatment of soils polluted with polycyclic aromatic hydrocarbons
Keywords
anhydrobiosis, polycyclic aromatic hydrocarbons, arid and semiarid
soils, bioremediation, PGPR
Related Book
Other papers in this volume
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