Growth and survival of Pseudomonas putida strains degrading naphthalene in soil model systems with different moisture levels

被引：13
作者：
Filonov, AE
Puntus, IF [1 ]
Karpov, AV
Gaiazov, RR
Kosheleva, IA
Boronin, AM
机构：
[1] Russian Acad Sci, Inst Biochem & Physiol Microorganisms, Lab Plasmid Biol, Moscow 142292, Russia
[2] Russian Acad Sci, Inst Biochem & Physiol Microorganisms, Lab Gene Systemat Microorganisms, Moscow 142292, Russia
[3] Puschino State Univ, Moscow 142292, Russia
来源：
PROCESS BIOCHEMISTRY | 1999年 / 34卷 / 03期
基金：
俄罗斯基础研究基金会;
关键词：
moisture; soil; Pseudomonas; biodegradation; naphthalene; mathematical model;
D O I：
10.1016/S0032-9592(98)00100-9
中图分类号：
Q5 [生物化学]; Q7 [分子生物学];
学科分类号：
071010 ; 081704 ;
摘要：
The effect of different moisture levels (from 20 to 70%) on the growth and survival of Pseudomonas putida strains G7 and BS3701 degrading naphthalene was studied in soil model systems. P. putida G7 contains plasmid NAH7 and P. putida BS3701 harbours plasmids pBS1141 and pBS1142. A mathematical model is proposed to describe the observed dynamics of the number of viable bacterial cells. Naphthalene and soil organic matter were considered as substrates available to bacteria. Data fitting allowed the estimation of model parameters characterizing microbial growth rate, utilization rate of substrates, specific maintenance rate and yield coefficient. Both the maximum bacterial concentration and the highest yield coefficient were observed at a soil moisture level of 40%. This optimal moisture level is close to but less than the water capacity (48%) of the soil used. (C) 1999 Elsevier Science Ltd. All rights reserved.
引用
收藏
页码：303 / 308
页数：6
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