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ISOLATION AND IDENTIFICATION OF CHLORPYRIFOS- DEGRADING BACTERIA FROM RICE-UPLAND CROP SOIL IN THE MEKONG DELTA, Scientific Journal Of Thu Dau Mot University, No 6(31) –2016, Dec. 2016

The aim of this studyisto isolate the bacterial strains which degrade Chlorpyrifos from rice-upland crop soils in the Mekong Delta. Twelve soil samples were taken at Cai Lay -Tien Giang, Cho Moi -An Giang and Binh Tan-Vinh Long. Soil bacteria were enriched in mineral salt medium solution containing 20 mg/L of Chlorpyrifos as the only carbon source for bacterial growth. The results showed that one bacterial community was enriched and degraded Chlorpyrifos. One bacterial strain (coded as BT_C8.9) that was isolated from thiscommunity degraded 41.07 % of Chlorpyrifosafter 30 culturedays. According to the sequencing of 16S rRNAgene, thisbacterial strainswas identified asMicrobacterium sp. C8.9.

Từ khóa: Bacteria; Chlorpyrifos; degradation; isolate ;Đất nông nghiệp;Đồng bằng sông Cửu Long

6 p hien 24/05/2017 443 2

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