Phenotype Switching in Metal-Tolerant Bacteria Isolated from a Hyperaccumulator Plant

Overview

Journal Biology (Basel)

Publisher MDPI

Specialty Biology

Date 2021 Sep 28

PMID 34571755

Authors

Artur Banach

Agnieszka Kuzniar

Anna Marzec-Grzadziel

Anna Galazka

Agnieszka Wolinska

Affiliations

Soon will be listed here.

Abstract

As an adaptation to unfavorable conditions, microorganisms may represent different phenotypes. L. is a hyperaccumulator of pollutants, but the functions of its microbiome have not been well recognized to date. We aimed to reveal the potential of the microbiome for degradation of organic compounds, as well as its potential to promote plant growth in the presence of heavy metals. We applied the Biolog Phenotypic Microarrays platform to study the potential of the microbiome for the degradation of 96 carbon compounds and stress factors and assayed the hydrolytic potential and auxin production by the microorganisms in the presence of Pb, Cd, Cr (VI), Ni, Ag, and Au. We found various phenotype changes depending on the stress factor, suggesting a possible dual function of the studied microorganisms, i.e., in bioremediation and as a biofertilizer for plant growth promotion. sp., sp. and sp. exhibited high efficacy in metabolizing organic compounds. sp., sp. and sp. were efficient in enzymatic responses and were characterized by metal tolerant. Since each strain exhibited individual phenotype changes due to the studied stresses, they may all be beneficial as both biofertilizers and bioremediation agents, especially when combined in one biopreparation.

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