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icaA Gene of Staphylococcus aureus Responds to NaCl, Leading to Increased Biofilm Formation

Authors
Lee, SoominKim, SejeongLee, HeeyoungHa, JimyeongLee, JeeyeonChoi, YukyungOh, HyeminYoon, YohanChoi, Kyoung-Hee
Issue Date
Mar-2018
Publisher
INT ASSOC FOOD PROTECTION
Keywords
Biofilm; icaA; NaCl; Staphylococcus aureus
Citation
JOURNAL OF FOOD PROTECTION, v.81, no.3, pp 412 - 416
Pages
5
Journal Title
JOURNAL OF FOOD PROTECTION
Volume
81
Number
3
Start Page
412
End Page
416
URI
https://scholarworks.sookmyung.ac.kr/handle/2020.sw.sookmyung/4623
DOI
10.4315/0362-028X.JFP-17-238
ISSN
0362-028X
1944-9097
Abstract
The objective of this study was to elucidate the role of the icaA gene in biofilm formation of Staphylococcus aureus exposed to NaCl. The icaA-deletion mutant of S. aureus ATCC 13565 was constructed with the temperature-sensitive plasmid pIMAY. Microtiter plate assays were performed to confirm biofilm formation for both the wild type and the mutant at 0% (control), 2, 4, and 6% NaCl. The microtiter plate assay revealed that biofilm formation by the wild type increased (P < 0.05) as NaCl concentration increased, but biofilm formation of the mutant was not affected by NaCl concentration. Biofilm formation by the mutant was lower (P < 0.05) than that by the wild type. These results indicate that icaA plays an important role in biofilm formation by S. aureus when the pathogen is exposed to NaCl.
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생활과학대학 (식품영양학과)
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