Increased secretion of bacterial pyomelanin caused by light accelerates corrosion of low alloy steel.
Chemosphere
; 359: 142353, 2024 Jul.
Article
em En
| MEDLINE
| ID: mdl-38761828
ABSTRACT
Microorganisms in the waterline zone can secrete pigments to avoid damage caused by ultraviolet radiation, some of which have corrosive effects. In this work, we found that the secretion of pyomelanin by P3 strain of Pseudoalteromonas lipolytica significantly increases under strong lighting conditions, accelerating the corrosion of the material. Molecular mechanisms indicate that strong light, as a stressful environmental factor, enhances the expression of melanin secretion-related genes to prevent bacteria from being damaged by ultraviolet radiation. Therefore, this work proposes a new corrosion mechanism in the waterline zone, pigment-producing microorganisms are also involved in the waterline corrosion process.
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Base de dados:
MEDLINE
Assunto principal:
Aço
/
Ligas
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Melaninas
Idioma:
En
Ano de publicação:
2024
Tipo de documento:
Article