<i>In-Situ</i>Biostimulatory Effect of Selected Organic Wastes on Bacterial Atrazine Biodegradation
<i>In-Situ</i>Biostimulatory Effect of Selected Organic Wastes on Bacterial Atrazine Biodegradation作者机构：Biological Sciences Programme Abubakar Tafawa Balewa University Bauchi Nigeria Microbiology Department Usmanu Dan Fodio University Sokoto Nigeria Queens University Environmental and Genomic Research (QUESTOR) Center Queens University of Belfast Belfast Northern Ireland UK
出 版 物：《Advances in Microbiology》 (微生物学（英文）)
年 卷 期：2012年第2卷第4期
页 面：587-592页
学科分类：1002[医学-临床医学] 100214[医学-肿瘤学] 10[医学]
主 题：Biostimulation Biodegradation Bioremediation Mineralization Atrazine
摘 要：The biostimulatory effect of selected organic wastes on bacterial biodegradation of atrazine (2-chloro-4-ethylamino-6-isopropylamino-1,3,5-triazine) in three agricultural soils in Bauchi state, Nigeria, was carried out. The soil physico-chemical characteristics were investigated to further understand the environmental conditions of the sampling sites. Enrichment technique was used to isolate the atrazine-degrading strains. Mineralization studies were carried out to determine atrazine biodegradation potentials of strains. Polymerase Chain Reaction (PCR) amplification of total nucleic acid of strains revealed several bacterial species based on nucleotide sequence analyses. Biostimulatory effect of selected organic wastes carried out showed minimal to average extent of biodegradation. The highest mean values, in CFU/mL, increase in biomass was recorded in Pseudomonas sp for both Cow dung 16.76 (42.03%) and Chicken droppings 12.32 (38.46%). However, biostimulatory effect using consortia provided more promising results, with 41.51% and 42.08% in Cow dung and Chicken droppings, biomass increase, respectively, in studies conducted. This proves that competition, survival of inoculums, bioavailability of organic amendments and nature of chemical are important factors affecting bioremediation.
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