scholarly journals LIPIDS OF MODERATELY HALOPHILIC BACTERIA FROM SALINE LAKE OF ARAL SEA REGION

2021 ◽  
Vol 90 (12-1) ◽  
Author(s):  
Abdulaziz Kulonov ◽  
Dilbar Mirzarakhmetova
2007 ◽  
Vol 57 (6) ◽  
pp. 1243-1249 ◽  
Author(s):  
Ngoc-Phuc Hua ◽  
Atsuko Kanekiyo ◽  
Katsunori Fujikura ◽  
Hisato Yasuda ◽  
Takeshi Naganuma

Two Gram-positive, rod-shaped, moderately halophilic bacteria were isolated from a deep-sea carbonate rock at a methane cold seep in Kuroshima Knoll, Japan. These bacteria, strains IS-Hb4T and IS-Hb7T, were spore-forming and non-motile. They were able to grow at temperatures as low as 9 °C and hydrostatic pressures up to 30 MPa. Based on high sequence similarity of their 16S rRNA genes to those of type strains of the genus Halobacillus, from 96.4 % (strain IS-Hb7T to Halobacillus halophilus NCIMB 9251T) to 99.4 % (strain IS-Hb4T to Halobacillus dabanensis D-8T), the strains were shown to belong to this genus. DNA–DNA relatedness values of 49.5 % and 1.0–33.0 %, respectively, were determined between strains IS-Hb4T and IS-Hb7T and between these strains and other Halobacillus type strains. Both strains showed the major menaquinone MK7 and l-orn–d-Asp cell-wall peptidoglycan type. Straight-chain C16 : 0, unsaturated C16 : 1 ω7c alcohol and C18 : 1 ω7c and cyclopropane C19 : 0 cyc fatty acids were predominant in both strains. The DNA G+C contents of IS-Hb4T and IS-Hb7T were respectively 43.3 and 42.1 mol%. Physiological and biochemical analyses combined with DNA–DNA hybridization results allowed us to place strains IS-Hb4T (=JCM 14154T=DSM 18394T) and IS-Hb7T (=JCM 14155T=DSM 18393T) in the genus Halobacillus as the respective type strains of the novel species Halobacillus profundi sp. nov. and Halobacillus kuroshimensis sp. nov.


2007 ◽  
Vol 61 (2) ◽  
pp. 273-284 ◽  
Author(s):  
Mónica Sánchez-Román ◽  
Maria A. Rivadeneyra ◽  
Crisogono Vasconcelos ◽  
Judith A. McKenzie

2019 ◽  
Vol 15 (2) ◽  
pp. 95-105
Author(s):  
Leila Satari Faghihi ◽  
Bagher Seyedalipour ◽  
Salman Ahmady-asbchin ◽  
Gholamhossein Riazi

1974 ◽  
Vol 20 (2) ◽  
pp. 241-245 ◽  
Author(s):  
S. C. Kushwaha ◽  
M. B. Gochnauer ◽  
D. J. Kushner ◽  
M. Kates

Quantitative measurements were carried out on pigmented and colorless isoprenoid compounds in several species of extremely and moderately halophilic bacteria. Phytoene was found in most extreme halophiles; it was present in high concentrations in a moderately halophilic coccus (H5) and absent from a moderately halophilic rod (A31C). Only the pigmented extreme halophiles contained β-carotene. Halobacterium cutirubrum contained substantial amounts of lycopene; this compound was present only in small amounts or missing from the other bacteria. Though lycopene is a precursor of β-carotene in plants, there was no correlation between the amounts of lycopene and β-carotene in the different bacterial species. C50 pigments (bacterioruberins) were found only in pigmented extreme halophiles. There was no consistent correlation between the amounts of C40 and C50 compounds in these bacteria. This suggests that the latter may have a biosynthetic pathway independent of the former.Squalene, dihydrosqualene, and tetrahydrosqualene were found in most of the bacteria studied. Menaquinone was found in all species, except the moderately halophilic rod A31C which contained ubiquinone instead. The visual pigment retinal was found in most of the pigmented extreme halophiles, but was not detected in the moderate halophiles.


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