NDLI: Physiological and Cellular Responses of the 2,4-D Degrading Bacterium, Burkholderia cepacia YK-2, to the Phenoxyherbicides 2,4-D and 2,4,5-T

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Physiological and Cellular Responses of the 2,4-D Degrading Bacterium, Burkholderia cepacia YK-2, to the Phenoxyherbicides 2,4-D and 2,4,5-T

Content Provider	Springer Nature Link
Author	Cho, Yun Seok Kahng, Hyung Yeel Kim, Chi Kyung Kukor, Jerome J. Oh, Kye Heon
Copyright Year	2002
Abstract	Our previous research has demonstrated that novel 43-kDa DnaK and 41-kDa GroEL proteins are synthesized in Burkholderia sp. YK-2 in response to sublethal concentrations of 2,4-D stress [Cho et al. (2000) Curr Microbiol 41:33–38]. In this study, we have extended this work to examine the cellular responses of strain YK-2 to stresses induced in response to the phenoxyherbicides 2,4-D or 2,4,5-T. Strain YK-2 exhibited a more sensitive response to 2,4,5-T stress than to 2,4-D stress, as shown in physiological and morphological changes, suggesting a greater cytotoxic effect of 2,4,5-T. SEM analyses revealed the presence of perforations and irregular rod forms with wrinkled surfaces for cells treated with either herbicide. These irregularities were found more frequently for 2,4,5-T-treated cells than for 2,4-D-treated cells. Analysis of cellular fatty acids showed similar effects in the shifts of total cellular fatty acid composition in response to 2,4-D and 2,4,5-T. Strain YK-2 could degrade 2.25 mM 2,4-D completely during 28 h of incubation with transient production of 2,4-dichlorophenol as a metabolite; however, 2,4,5-T was not catabolized at any of the concentrations tested. BIOLOG and 16S rDNA analyses revealed that strain YK-2 was 98% similar to the Burkholderia cepacia species cluster; therefore, we have designated this strain as B. cepacia YK-2.
Starting Page	415
Ending Page	422
Page Count	8
File Format	PDF
ISSN	03438651
Journal	Current Microbiology
Volume Number	45
Issue Number	6
e-ISSN	14320991
Language	English
Publisher	Springer-Verlag
Publisher Date	2002-12-01
Publisher Place	Berlin, Heidelberg
Access Restriction	One Nation One Subscription (ONOS)
Content Type	Text
Resource Type	Article
Subject	Medicine Microbiology Applied Microbiology and Biotechnology

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Physiological and Cellular Responses of the 2,4-D Degrading Bacterium, Burkholderia cepacia YK-2, to the Phenoxyherbicides 2,4-D and 2,4,5-T

2,4-Dichlorophenoxyacetic acid (2,4-D)- and 2,4,5-trichlorophenoxyacetic acid (2,4,5-T)-degrading gene cluster in the soybean root-nodulating bacterium Bradyrhizobium elkanii USDA94.

Induction of Stress Shock Proteins DnaK and GroEL by Phenoxyherbicide 2,4-D in Burkholderia sp. YK-2 Isolated from Rice Field

Resolution of 2-nitroalcohols by Burkholderia cepacia lipase-catalyzed enantioselective acylation

Correlation between synthesis variation of 2-alkylquinolones and the antifungal activity of a Burkholderia cepacia strain collection

16S rRNA gene phylogeny and tfdA gene analysis of 2,4-D-degrading bacteria isolated in China

Electron microscopic study of Burkholderia cepacia biofilms

Colonization behavior of bacterium Burkholderia cepacia inside the Oryza sativa roots visualized using green fluorescent protein reporter

A Nonhemolytic Phospholipase C from Burkholderia cepacia

Physiological and Cellular Responses of the 2,4-D Degrading Bacterium, Burkholderia cepacia YK-2, to the Phenoxyherbicides 2,4-D and 2,4,5-T

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Physiological and Cellular Responses of the 2,4-D Degrading Bacterium, Burkholderia cepacia YK-2, to the Phenoxyherbicides 2,4-D and 2,4,5-T

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