ISSN:
1432-072X
Keywords:
Lactobacillus
;
Medium composition
;
Metal cations
;
Electron microscopy
;
Protoplast-like forms
Source:
Springer Online Journal Archives 1860-2000
Topics:
Biology
Notes:
Abstract The growth of some locally isolated Lactobacillus strains forming D(-) or L(+) lactic acid, Lactobacillus helveticus ATCC 15009 and Lactobacillus delbrueckii subsp. bulgaricus ATCC 11842 was examined in different media. L. helveticus and Lactobacillus LBL strains formed atypical protoplast-like cells in LAPT medium, sensitive to SDS and proteinase. Specific morphological changes in the cell wall structure of these variants were revealed by transmission and scanning electron microscopy. The effect of glucose and various salts on their appearance was investigated. The prevalent role of metal cations, especially of Mg2+, was established.
Type of Medium:
Electronic Resource
URL:
http://dx.doi.org/10.1007/BF00288715
