Biodegradation of Chlorpyrifos, Malathion, and Dimethoate by Three Strains of Bacteria Isolated from Pesticide-Polluted Soils in Sudan

被引：85

作者：

Ishag, Abd Elaziz S. A. ^{[1
,4
]}

Abdelbagi, Azhari O. ^{[1
]}

Hammad, Ahmed M. A. ^{[1
,5
]}

Elsheikh, Elsiddig A. E. ^{[2
]}

Elsaid, Osama E. ^{[3
]}

Hur, J. -H. ^{[4
]}

Laing, Mark D. ^{[5
]}

机构：

[1] Univ Khartoum, Dept Crop Protect, Fac Agr, Shambat, Sudan

[2] Univ Khartoum, Dept Soil & Environm, Fac Agr, Shambat, Sudan

[3] Al Neelain Univ, Fac Agr Technol & Fish Sci, Khartoum, Sudan

[4] Kangwon Natl Univ, Coll Agr & Life Sci, Dept Environm Biol, Chunchon, Gangwon Do, South Korea

[5] Univ Kwazulu, Sch Agr Earth & Environm Sci, Discipline Plant Pathol, Natal, South Africa

来源：

JOURNAL OF AGRICULTURAL AND FOOD CHEMISTRY | 2016年 / 64卷 / 45期

关键词：

biodegradation; bacteria; chlorpyrifos; dimethoate; malathion; Sudan; BIOREMEDIATION; DEGRADATION; PARATHION;

D O I：

10.1021/acs.jafc.6b03334

中图分类号：

S [农业科学];

学科分类号：

09 ;

摘要：

This study was done to identify pesticide-biodegrading microorganisms and to characterize degradation rates. Bacillus safensis strain FO-36b(T), Bacillus subtilis subsp. inaquosorum strain KCTC13429(T), and Bacillus cereus strain ATCC14579(T) were isolated from pesticide-polluted soil in Sudan, separately incubated with each pesticide with periodic samples drawn for GC and GC-MS. Pesticide biodegradation followed a biphasic model. alpha and beta half-lives (days) of chlorpyrifos, malathion, and dimethoate in B. safensis culture were 2.13, 4.76; 2.59, 5.66; and 9.5, 11.0, respectively. Values in B. subtilis and B. cereus cultures were 4.09, 9.45 and 4.33, 9.99 for chlorpyrifos; 2.99, 5.36 and 2.43, 4.71 for malathion; and 9.53, 15.11 and 4.16, 9.27 for dimethoate. No metabolite was detected in B. subtilis cultures, whereas a few were detected from B. safensis and B. cereus cultures. Bacterial efficiency can be ordered as B. safensis > B. subtilis > B. cereus for chlorpyrifos and B. cereus > B. subtilis > B. safensis for malathion and dimethoate.

引用

页码：8491 / 8498

页数：8