STUDIES ON BIOLOGICAL CHARACTERISTICS OF HALOPHILIC ACTINOMYCETES
- VernacularTitle:嗜盐放线菌生物学特性初步研究
- Author:
Shukun TANG
;
Wenjun LI
;
Yongguang ZHANG
;
Lihua XU
;
Cheng JIANG
;
- Publication Type:Journal Article
- Keywords:
Extreme Environments, Halophilic Actinomycetes, Positive Ion
- From:
Microbiology
1992;0(04):-
- CountryChina
- Language:Chinese
-
Abstract:
Studies on NaCl concentration, pH tolerance and selectivity to different concent rations of Na +, K +, Mg 2+ and Ca 2+ of 43 isolates from th e saline soils in XinJiang, HeBei and QingHai Provinces of China and 4 type stra ins were performed in this paper Results showed that halotolerant actinomycete s have extensiv e adaptability to Na +, K + and Mg 2+ and only a few of them can grow in low CaCl 2 concentration Halophilic actinomycetes have extensive adaptability to Na +, and for most halophilic actinomycetes, Na + can be substituted by K + , Mg 2+ , but not for Ca 2+ For some halophilic actinomycetes , it is necessary to have Na + for their growth It also showed that the growth of al l halophilic actinomycetes had se lectivity with different concentration of Na +, K +, Mg 2+ So it is pre sumed that only Kaliumphilic or Magnesiumphilic Actinomycetes maybe exist in hig h salt environments In addition, the growth pH range were 6 0～9 0 and the o ptimum pH were 7 0～8 0 not only for halophilic but also for halotolerant acti nomycetes The dis tribution of halophilic actinomycetes also have some relativity to isolation sit es
