Effect of Dose-Response of Zinc and Manganese on Siderophores Production| Science Publications

American Journal of Environmental Sciences

Daly Imen¹  Saidi Neila¹  Mehri Ines¹  Meyer J. Marie¹  Turki Yousra¹  Hassen Abdennasseur¹  Khessairi Amel¹ 

关键词: Fluorescent pseudomonads;    heavy metals;    iron-poor media;    siderophore production;    bacterial strains;    control medium;    bacterial strains;    non-proliferating conditions;   

DOI  :  10.3844/ajessp.2012.143.151

学科分类：环境科学（综合）

来源: Science Publications

【 摘 要 】

Problem statement: This study was conducted to find and determine whether the siderophores of the four environmental Pseudomonas spp. isolates possess a sequestering activity towards essential transition metals (Zn and Mn) other than iron. Approach: Four fluorescent Pseudomonads isolated from various environments, were characterized analytically (Isoelectric focusing), biologically (pyoverdine-mediated uptake) and genetically (16S rDNA sequencing). By means of spectrophotometric measurements, it was possible to establish and compare the levels of pyoverdine production, in two different nutrient-poor media. Results: The strains were assigned, by sequencing, to P. fluorescens, P. aeruginosa, P. putida and P. mosselii isolated, respectively from soil, compost, sea water and waste water treatment plant. These bacterial strains were recognized as producing diver

【 授权许可】

Unknown