Adaptation of Pseudomonas fluorescens to Low Levels of Water Activity Produced by Different Solutes.
نویسندگان
چکیده
A culture of Pseudomonas fluorescens which grew at a minimal a(w) of 0.97 in a glucose-salts broth adjusted to that level with NaCl, KCl, or glucose, and at a(w) 0.9725 with Na(2)SO(4), was adapted to grow at lower a(w) levels produced by these solutes. Adaptation to growth at a low a(w) produced by means of one solute did not necessarily result in growth at that a(w) when another solute was employed to lower the a(w). The culture adapted to grow at a(w) 0.9650 produced by addition of glucose could grow equally well in broth adjusted to that a(w) with NaCl or KCl, but not Na(2)SO(4). NaCl and KCl permitted growth at the lowest a(w) level (0.9625), and the culture adapted in KCl did equally well in NaCl.
منابع مشابه
Impact of Arbuscular Mycorrhizal Fungi and Pseudomonas Fluorescens with Various Levels of Superphosphate on Growth Enhancement and Flowering Response of Gerbera
Gerbera jamesoniiis of commercial significance and fifth most used cut flower in the world today. A pot experiment was performed to see the effect of co-inoculation of arbuscular mycorrhizal fungi (AMF) i.e. (Glomus mosseae andAcaulospora laevis) with phosphate solubilizing bacteria Pseudomonas fluorescensin the presence of different doses of superphosphate (low, medium, high) on growth establi...
متن کاملProduction of Recombinant Proline Dehydrogenase Enzyme from Pseudomonas fluorescens pf-5 in E. coli System
Proline dehydrogenase (ProDH; 1.5.99.8) belongs to superfamily of amino acid dehydrogenase, which plays a significant role in the metabolic pathway from proline to glutamate. The goal of this research was gene cloning and characterization of ProDH enzyme from Pseudomonas fluorescens pf-5 strain. The gene encoding ProDH was isolated by means of PCR amplification and cloned in an IPTG inducible T...
متن کاملارزیابی توان آنتاگونیستی بیووارهای باکتری Pseudomonas fluorescens جدا شده از ریزوسفر سیب زمینی جهت کنترل Pectobacterium carotovorum subsp. atrosepticum
Representatives of fluorescent pseudomonad strains were assessed for their antagonistic activity against the blackleg of potato pathogen, Pectobacterium carotovorum subsp. atrosepticum. Tested strains belonged mainly to Pseudomonas fluorescens Biovars III, IV and V and they could produce inhibition zone on PDA medium against P. c. subsp. atrosepticum ranging from 1.5-5.5cm. Six selected strains...
متن کاملارزیابی توان آنتاگونیستی بیووارهای باکتری Pseudomonas fluorescens جدا شده از ریزوسفر سیب زمینی جهت کنترل Pectobacterium carotovorum subsp. atrosepticum
Representatives of fluorescent pseudomonad strains were assessed for their antagonistic activity against the blackleg of potato pathogen, Pectobacterium carotovorum subsp. atrosepticum. Tested strains belonged mainly to Pseudomonas fluorescens Biovars III, IV and V and they could produce inhibition zone on PDA medium against P. c. subsp. atrosepticum ranging from 1.5-5.5cm. Six selected strains...
متن کاملاثر محلولپاشی سویههای مختلف سودوموناس (Pseudomnas fluorescens) بر صفات کمی، عملکرد و اجزای عملکرد دو رقم برنج در شرایط گلخانه
In order to study the effects of foliar spraying of Pseudomonas fluorescens bacteria on quantitative characteristics, yield and yield components of two rice cultivars, a factorial experiment, based on completely randomized design with three replications, was conducted in Rice Research Institute of Rasht, Guilan province, Iran. In this experiment, two rice cultivars (Khazar and Hashemi) were spr...
متن کاملذخیره در منابع من
با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید
برای دانلود متن کامل این مقاله و بیش از 32 میلیون مقاله دیگر ابتدا ثبت نام کنید
ثبت ناماگر عضو سایت هستید لطفا وارد حساب کاربری خود شوید
ورودعنوان ژورنال:
- Applied microbiology
دوره 14 6 شماره
صفحات -
تاریخ انتشار 1966