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Laboratory Investigation of Ecological Factors Influencing the Environmental Presence of Burkholderia pseudomallei
Author(s) -
Tong Shide,
Yang Song,
Lu Zhenzhi,
He Weihai
Publication year - 1996
Publication title -
microbiology and immunology
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.664
H-Index - 70
eISSN - 1348-0421
pISSN - 0385-5600
DOI - 10.1111/j.1348-0421.1996.tb01092.x
Subject(s) - burkholderia pseudomallei , bacteria , biology , burkholderia , water content , ecology , microbiology and biotechnology , environmental chemistry , botany , chemistry , genetics , geotechnical engineering , engineering
Factors like temperature, pH value, water content in soil, and ultraviolet rays that might have influence on the survival of environmental Burkholderia pseudomallei strains were evaluated. Data showed that the optimal temperature and pH value for B. pseudomallei were 24 C to 32 C and 5 to 8, respectively. Water content in soil of less than 10% brought about the death of the bacteria within 70 days, while water content of more than 40% maintained bacteria life for 726 days. The bacteria were easily killed by ultraviolet rays at 465 μW/cm 2 for 7.75 min while other permanent soil bacteria were killed at 1,860 μW/cm 2 for 31 min. From these results, it could be concluded that proper temperature, enough water in soil, and suitable soil pH might be the three major ecological conditions governing the environmental presence of B. pseudomallei .