Phenol Oxidase Activity of Azospirillum brasilense Sp245 Mutants with Modified Motility and Azospirillum brasilense Sp7 Phase Variants with Different Plasmid Composition


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Abstract

Herein, we reveal the alteration in phenol oxidase enzymes complex production from Azospirillum brasilense Sp245 omegon mutants with polar and lateral flagella dysfunction and from A. brasilense Sp7 phase variants with different plasmid composition. The enzymatic activities for various laccases, tyrosinases, Mnperoxidases, and lignin peroxidases as well as the isomorphic composition of intracellular laccases and tyrosinases were estimated for the studied variants and the parent strains. It was noted that various genetic events correlating with phenotypic heterogeneity in A. brasilense populations affect their phenol oxidase activity level.

About the authors

E. G. Ponomareva

Institute of Biochemistry and Physiology of Plants and Microorganisms

Email: kupryashina_m@mail.ru
Russian Federation, Saratov

M. A. Kupryashina

Institute of Biochemistry and Physiology of Plants and Microorganisms

Author for correspondence.
Email: kupryashina_m@mail.ru
Russian Federation, Saratov

A. V. Shelud’ko

Institute of Biochemistry and Physiology of Plants and Microorganisms

Email: kupryashina_m@mail.ru
Russian Federation, Saratov

L. P. Petrova

Institute of Biochemistry and Physiology of Plants and Microorganisms

Email: kupryashina_m@mail.ru
Russian Federation, Saratov

E. P. Vetchinkina

Institute of Biochemistry and Physiology of Plants and Microorganisms

Email: kupryashina_m@mail.ru
Russian Federation, Saratov

E. I. Katsy

Institute of Biochemistry and Physiology of Plants and Microorganisms

Email: kupryashina_m@mail.ru
Russian Federation, Saratov

V. E. Nikitina

Institute of Biochemistry and Physiology of Plants and Microorganisms

Email: kupryashina_m@mail.ru
Russian Federation, Saratov

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