Effects of EDTA and Tween60 on biodegradation of n-hexadecane with two strains of Pseudomonas aeruginosa

نویسندگان

  • Zhaozhe Hua
  • Ruohai Song
  • Guocheng Du
  • Huazhong Li
  • Jian Chen
چکیده

Two Pseudomonas aeruginosa strains with different hydrocarbon uptake modes were observed in the previous research. One strain produces biosurfactant during the process of hydrocarbon uptake, and was named as P. aeruginosa S. The other one utilizes hydrocarbon directly and was named as P. aeruginosa Y. For comparison of the characteristics of the two strains, the effects of EDTA and Tween60 on alkane biodegradation and cell surface characteristics were investigated in this paper. The results showed that the bacteria with different hydrocarbon uptake mode also have different response to the addition of EDTA and Tween60. As a result, in the case of P. aeruginosa S, the addition of EDTA inhibited the cell growth a t o ©

برای دانلود رایگان متن کامل این مقاله و بیش از 32 میلیون مقاله دیگر ابتدا ثبت نام کنید

ثبت نام

اگر عضو سایت هستید لطفا وارد حساب کاربری خود شوید

منابع مشابه

اصلاح زیستی خاک های آلوده به n-هگزادکان با استفاده از باکتری‌های پسودوموناس آئروژینوزا جداسازی شده از نواحی آلوده ساحلی

Background and purpose: Soil pollution to hydrocarbons in oil field zones in southern Iran and areas close to oil and gas transportation pipe lines is a major environmental problem. The current study aimed at determining the efficiency of bioremediation of n-Hexadecane contaminated soil as a model contaminant. Materials and methods: Aged hydrocarbon contaminated soils were used as the origin...

متن کامل

Rhamnolipid stimulates uptake of hydrophobic compounds by Pseudomonas aeruginosa.

The biodegradation of hexadecane by five biosurfactant-producing bacterial strains (Pseudomonas aeruginosa UG2, Acinetobacter calcoaceticus RAG1, Rhodococcus erythropolis DSM 43066, R. erythropolis ATCC 19558, and strain BCG112) was determined in the presence and absence of exogenously added biosurfactants. The degradation of hexadecane by P. aeruginosa was stimulated only by the rhamnolipid bi...

متن کامل

Assessing the role of Pseudomonas aeruginosa surface-active gene expression in hexadecane biodegradation in sand.

Low pollutant substrate bioavailability limits hydrocarbon biodegradation in soils. Bacterially produced surface-active compounds, such as rhamnolipid biosurfactant and the PA bioemulsifying protein produced by Pseudomonas aeruginosa, can improve bioavailability and biodegradation in liquid culture, but their production and roles in soils are unknown. In this study, we asked if the genes for su...

متن کامل

تجزیه زیستی مالاتیون توسط کشت میکس سویه‌های Serratia marcescens BNA1 و Pseudomonas aeruginosa BNA2

Background and Objectives: Organophosphate pesticides are used most commonly for domestic, commercial, and agricultural purposes and have been found to be highly toxic. In essence, bioremediation has become one of the most important tools for removing these compounds in the environment, considering its higher efficiency when compared with the physicochemical methods. Materials and Methods: T...

متن کامل

Evaluation of the Biodegradation of Petroleum Contaminants by Pseudomonas Aeruginosa in the Caspian Sea Coastline Waters

Background: Water plays an essential role in supporting life on earth and sea worldwide, requiringclean, safe, high quality and sustainable resources. Nowadays, many water resources have been contaminatedwith toxic compounds originating from petroleumdue to economical and industrial developments. There is anurgent need to clean up the waters with environmentally friendlyand inexpensive methods...

متن کامل

ذخیره در منابع من


  با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید

عنوان ژورنال:

دوره   شماره 

صفحات  -

تاریخ انتشار 2006