Degradation of dimethyl carboxylic phthalate ester by Burkholderia cepacia DA2 isolated from marine sediment of South China Sea

TY - JOUR

T1 - Degradation of dimethyl carboxylic phthalate ester by Burkholderia cepacia DA2 isolated from marine sediment of South China Sea

AU - Wang, Yali

AU - Yin, Bo

AU - Hong, Yiguo

AU - Yan, Yan

AU - Gu, Ji Dong

N1 - Funding Information: Acknowledgments This research was supported by a Nature Science Doctoral Grant from Guangdong Province (06301430) and a Young Innovation Grant of South China Sea Institute of Oceanography, Chinese Academy of Sciences (07SC011009).

PY - 2008/11

Y1 - 2008/11

N2 - Burkholderia cepacia DA2, isolated from marine sediment of the South China Sea, is capable of utilizing dimethyl phthalate (DMP) as the sole source of carbon and energy. During the transformation of DMP in batch culture, its corresponding degradation intermediates were identified as monomethyl phthalate (MMP) and phthalate acid (PA) sequentially over the time of incubation. The biodegradation biochemical pathway of DMP was DMP to MMP and then to PA before mineralization. Degradation of DMP by B. cepacia DA2 was also dependent upon DMP-induction, and the initial concentrations of DMP affected the degradation rate. Degradation kinetics fit well with the modified Gompertz model. The optimum pH and salinity was 6.0 and <5‰, respectively, for DMP degradation by B. cepacia DA2. This study showed that the indigenous microorganisms of the deep-ocean sediments are capable of DMP degradation completely.

AB - Burkholderia cepacia DA2, isolated from marine sediment of the South China Sea, is capable of utilizing dimethyl phthalate (DMP) as the sole source of carbon and energy. During the transformation of DMP in batch culture, its corresponding degradation intermediates were identified as monomethyl phthalate (MMP) and phthalate acid (PA) sequentially over the time of incubation. The biodegradation biochemical pathway of DMP was DMP to MMP and then to PA before mineralization. Degradation of DMP by B. cepacia DA2 was also dependent upon DMP-induction, and the initial concentrations of DMP affected the degradation rate. Degradation kinetics fit well with the modified Gompertz model. The optimum pH and salinity was 6.0 and <5‰, respectively, for DMP degradation by B. cepacia DA2. This study showed that the indigenous microorganisms of the deep-ocean sediments are capable of DMP degradation completely.

KW - Burkholderia

KW - Deep-ocean sediments

KW - Degradation pathway

KW - Dimethyl phthalate

KW - Endocrine-disrupting

UR - http://www.scopus.com/inward/record.url?scp=53249143990&partnerID=8YFLogxK

U2 - 10.1007/s10646-008-0247-4

DO - 10.1007/s10646-008-0247-4

M3 - 文章

C2 - 18651216

AN - SCOPUS:53249143990

SN - 0963-9292

VL - 17

SP - 845

EP - 852

JO - Ecotoxicology

JF - Ecotoxicology

IS - 8

ER -