Isolation and characterization of a bacterial strain that degrades cis-dichloroethenein the absence of aromatic inducers
| العنوان: | Isolation and characterization of a bacterial strain that degrades cis-dichloroethenein the absence of aromatic inducers |
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| المؤلفون: | Naoto Araki, Kenta Yonezuka, Nobuyuki Fujita, Masao Fukuda, Eiji Masai, Shoko Ohji, Takayuki Ezaki, Daisuke Kasai, Jun Shimodaira, Mitsuru Numata, Akira Hosoyama, Atsushi Yamazoe |
| المصدر: | The Journal of General and Applied Microbiology. 62:118-125 |
| بيانات النشر: | Microbiology Research Foundation, 2016. |
| سنة النشر: | 2016 |
| مصطلحات موضوعية: | 0301 basic medicine, Pseudomonas plecoglossicida, Strain (chemistry), biology, Chemistry, Pseudomonas, Toluene dioxygenase, Ribosomal RNA, biology.organism_classification, Applied Microbiology and Biotechnology, Microbiology, Agar plate, 03 medical and health sciences, 030104 developmental biology, Biochemistry, Soil microbiology, Bacteria |
| الوصف: | Bacteria capable of degrading cis-dichloroethene (cDCE) were screened from cDCE-contaminated soil, and YKD221, a bacterial strain that exhibited a higher growth on minimal salt agar plates in the presence of cDCE than in the absence of cDCE, were isolated. Phylogenetic studies of the 16S rRNA as well as gyrB, rpoD, and recA in YKD221 indicated that this strain is closely related to the type strains of Pseudomonas plecoglossicida, monteilii, and putida. An average nucleotide identity analysis indicated that YKD221 is most closely related to P. putida strains, including the type strain, which suggests that YKD221 belongs to P. putida. Although the genome of YKD221 was very similar to that of P. putida F1, a toluene-degrading strain, the YKD221 genome has 15 single-nucleotide polymorphisms and 4 insertions compared with the F1 genome. YKD221 caused the release of sufficient chloride ions from cDCE to suggest that the strain is able to completely dechlorinate and degrade cDCE. YKD221 also degraded trichloroethene but was unable to degrade trans-dichloroethene and tetrachloroethene. The degradation activity of YKD221 was elevated after growth on toluene. Inactivation of todC1, which encodes for a large subunit of the catalytic terminal component in toluene dioxygenase, resulted in a complete loss of growth on toluene and cDCE degradation activity. This is the first evidence of the involvement of todC1C2BA-coded toluene dioxygenase in cDCE degradation. YKD221 did not appear to grow on cDCE in a minimal salt liquid medium. However, YKD221 did exhibit an enhanced increase in cell concentration and volume of cells during growth on minimal salt agar plates with cDCE when first grown in LB medium. This behavior appears to have led us to misinterpret our initial results on YKD221 as an indication of improved growth in the presence of cDCE. |
| تدمد: | 1349-8037 0022-1260 |
| URL الوصول: | https://explore.openaire.eu/search/publication?articleId=doi_________::81d5f9beb8a5ef1904570e15f93aba60 https://doi.org/10.2323/jgam.2015.12.002 |
| حقوق: | OPEN |
| رقم الأكسشن: | edsair.doi...........81d5f9beb8a5ef1904570e15f93aba60 |
| قاعدة البيانات: | OpenAIRE |
| تدمد: | 13498037 00221260 |
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