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Chemotaxis Toward Crude Oil by an Oil-Degrading Pseudomonas aeruginosa 6-1B Strain

Authors
  • LIANG, KAIQIANG1, 2
  • GAO, RUIMIN2
  • WANG, CHENGJUN3
  • WANG, WEIBO2
  • YAN, WEI1
  • 1 Xi’an Jiaotong University, Xi’an , (China)
  • 2 Research Institute of Yanchang Petroleum (Group) Co. Ltd., Xi’an , (China)
  • 3 Xi’an Shiyou University, Xi’an , (China)
Type
Published Article
Journal
Polish Journal of Microbiology
Publisher
Exeley Inc.
Publication Date
Mar 09, 2021
Volume
70
Issue
1
Pages
69–78
Identifiers
DOI: 10.33073/pjm-2021-006
Source
Exeley
Keywords
License
Green

Abstract

The chemotactic properties of an oil-degrading Pseudomonas aeruginosa strain 6-1B, isolated from Daqing Oilfield, China, have been investigated. The strain 6-1B could grow well in crude oil with a specific rhamnolipid biosurfactant production. Furthermore, it exhibits chemotaxis toward various substrates, including glycine, glycerol, glucose, and sucrose. Compared with another oil-degrading strain, T7-2, the strain 6-1B presented a better chemotactic response towards crude oil and its vital component, n-alkenes. Based on the observed distribution of the strain 6-1B cells around the oil droplet in the chemotactic assays, the potential chemotaxis process of bacteria toward crude oil could be summarized in the following steps: searching, moving and consuming.

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