Cargando…
Survival of Escherichia coli O157:H7 in Soils from Jiangsu Province, China
Escherichia coli O157:H7 (E. coli O157:H7) is recognized as a hazardous microorganism in the environment and for public health. The E. coli O157:H7 survival dynamics were investigated in 12 representative soils from Jiangsu Province, where the largest E. coli O157:H7 infection in China occurred. It...
Autores principales: | , , , , , , |
---|---|
Formato: | Online Artículo Texto |
Lenguaje: | English |
Publicado: |
Public Library of Science
2013
|
Materias: | |
Acceso en línea: | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC3846838/ https://www.ncbi.nlm.nih.gov/pubmed/24312534 http://dx.doi.org/10.1371/journal.pone.0081178 |
_version_ | 1782293496569266176 |
---|---|
author | Zhang, Taoxiang Wang, Haizhen Wu, Laosheng Lou, Jun Wu, Jianjun Brookes, Philip C. Xu, Jianming |
author_facet | Zhang, Taoxiang Wang, Haizhen Wu, Laosheng Lou, Jun Wu, Jianjun Brookes, Philip C. Xu, Jianming |
author_sort | Zhang, Taoxiang |
collection | PubMed |
description | Escherichia coli O157:H7 (E. coli O157:H7) is recognized as a hazardous microorganism in the environment and for public health. The E. coli O157:H7 survival dynamics were investigated in 12 representative soils from Jiangsu Province, where the largest E. coli O157:H7 infection in China occurred. It was observed that E. coli O157:H7 declined rapidly in acidic soils (pH, 4.57 – 5.14) but slowly in neutral soils (pH, 6.51 – 7.39). The survival dynamics were well described by the Weibull model, with the calculated t(d) value (survival time of the culturable E. coli O157:H7 needed to reach the detection limit of 100 CFU g(−1)) from 4.57 days in an acidic soil (pH, 4.57) to 34.34 days in a neutral soil (pH, 6.77). Stepwise multiple regression analysis indicated that soil pH and soil organic carbon favored E. coli O157:H7 survival, while a high initial ratio of Gram-negative bacteria phospholipid fatty acids (PLFAs) to Gram-positive bacteria PLFAs, and high content of exchangeable potassium inhibited E. coli O157:H7 survival. Principal component analysis clearly showed that the survival profiles in soils with high pH were different from those with low pH. |
format | Online Article Text |
id | pubmed-3846838 |
institution | National Center for Biotechnology Information |
language | English |
publishDate | 2013 |
publisher | Public Library of Science |
record_format | MEDLINE/PubMed |
spelling | pubmed-38468382013-12-05 Survival of Escherichia coli O157:H7 in Soils from Jiangsu Province, China Zhang, Taoxiang Wang, Haizhen Wu, Laosheng Lou, Jun Wu, Jianjun Brookes, Philip C. Xu, Jianming PLoS One Research Article Escherichia coli O157:H7 (E. coli O157:H7) is recognized as a hazardous microorganism in the environment and for public health. The E. coli O157:H7 survival dynamics were investigated in 12 representative soils from Jiangsu Province, where the largest E. coli O157:H7 infection in China occurred. It was observed that E. coli O157:H7 declined rapidly in acidic soils (pH, 4.57 – 5.14) but slowly in neutral soils (pH, 6.51 – 7.39). The survival dynamics were well described by the Weibull model, with the calculated t(d) value (survival time of the culturable E. coli O157:H7 needed to reach the detection limit of 100 CFU g(−1)) from 4.57 days in an acidic soil (pH, 4.57) to 34.34 days in a neutral soil (pH, 6.77). Stepwise multiple regression analysis indicated that soil pH and soil organic carbon favored E. coli O157:H7 survival, while a high initial ratio of Gram-negative bacteria phospholipid fatty acids (PLFAs) to Gram-positive bacteria PLFAs, and high content of exchangeable potassium inhibited E. coli O157:H7 survival. Principal component analysis clearly showed that the survival profiles in soils with high pH were different from those with low pH. Public Library of Science 2013-12-02 /pmc/articles/PMC3846838/ /pubmed/24312534 http://dx.doi.org/10.1371/journal.pone.0081178 Text en © 2013 Zhang et al http://creativecommons.org/licenses/by/4.0/ This is an open-access article distributed under the terms of the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original author and source are properly credited. |
spellingShingle | Research Article Zhang, Taoxiang Wang, Haizhen Wu, Laosheng Lou, Jun Wu, Jianjun Brookes, Philip C. Xu, Jianming Survival of Escherichia coli O157:H7 in Soils from Jiangsu Province, China |
title | Survival of Escherichia coli O157:H7 in Soils from Jiangsu Province, China |
title_full | Survival of Escherichia coli O157:H7 in Soils from Jiangsu Province, China |
title_fullStr | Survival of Escherichia coli O157:H7 in Soils from Jiangsu Province, China |
title_full_unstemmed | Survival of Escherichia coli O157:H7 in Soils from Jiangsu Province, China |
title_short | Survival of Escherichia coli O157:H7 in Soils from Jiangsu Province, China |
title_sort | survival of escherichia coli o157:h7 in soils from jiangsu province, china |
topic | Research Article |
url | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC3846838/ https://www.ncbi.nlm.nih.gov/pubmed/24312534 http://dx.doi.org/10.1371/journal.pone.0081178 |
work_keys_str_mv | AT zhangtaoxiang survivalofescherichiacolio157h7insoilsfromjiangsuprovincechina AT wanghaizhen survivalofescherichiacolio157h7insoilsfromjiangsuprovincechina AT wulaosheng survivalofescherichiacolio157h7insoilsfromjiangsuprovincechina AT loujun survivalofescherichiacolio157h7insoilsfromjiangsuprovincechina AT wujianjun survivalofescherichiacolio157h7insoilsfromjiangsuprovincechina AT brookesphilipc survivalofescherichiacolio157h7insoilsfromjiangsuprovincechina AT xujianming survivalofescherichiacolio157h7insoilsfromjiangsuprovincechina |