Biocorrosion induced by red-tide alga-bacterium symbiosis and the biofouling induced by dissolved iron for carbon steel in marine environment

Yuqiao Dong ¹Guang-Ling Song ²Jiawei Zhang ³Yahui Gao ³Zi Ming Wang ¹Dajiang Zheng¹

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作者信息

1. Center for Marine Materials Corrosion and Protection,College of Materials,Xiamen University,Xiamen 361005,China
2. Center for Marine Materials Corrosion and Protection,College of Materials,Xiamen University,Xiamen 361005,China;Department of Ocean Science and Engineering,Southern University of Science and Technology,Shenzhen 518055,China;The University of Queensland,School of Mechanical and Mining Engineering,Division of Materials Engineering,St Lucia,Qld 4072,Australia
3. School of Life Sciences and Key Laboratory of Ministry of Education for Coastal and Wetland Ecosystems,Xiamen University,Xiamen 361102,China
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Abstract

The assemblages of unicellular microalgae and bacteria in phytoplankton communities can generally re-sult in biodeterioration of metals in marine environment.In this study,the self-promoted biofouling mechanism underneath red-tide alga Phaeodactylum tricornutum and its symbiotic bacterium Bacillus alti-tudinis was systematically revealed.The mutualistic interaction of the bacteria and algae quadrupled the corrosion rate in comparison to the individual effect of the bacterium or algal strain alone.Reversely,the corroded metal appeared to be an accelerator that can stimulate the activity of the P.tricornutum and aggravate the biological pollution based on the result of 62.3％up-regulation of the key photosynthesis genes.The corrosion-biofouling-accelerated corrosion-deteriorated biofouling formed a vicious cycle.

Key words

Algal-bacterial symbiosis/Marine biofouling/Carbon steel/Corrosion products

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基金项目

国家重点研发计划(2017YFB0702100)

国家自然科学基金(key project 51731008)

国家自然科学基金(general project 51671163)

国家自然科学基金(51901198)

出版年

2022

材料科学技术(英文版)

中国金属学会中国材料研究学会中国科学院金属研究所

材料科学技术(英文版)

CSTPCDCSCDSCI

影响因子：0.657

ISSN：1005-0302

参考文献量74

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