Isolation of psychrophilic halophiles from the Antarctic polar desert
Saline soils in the Dry Valley region of McMurdo Sound, Antarctica, contained bacteria showing salt tolerance or requirement. Soils were plated by the spread plate method on soil extract-peptone-yeast extract media to which sodium chloride had been added in concentrations from 0 to15 per cent (w/v)....
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ftvirginiatec:oai:vtechworks.lib.vt.edu:10919/64764 2024-05-19T07:31:16+00:00 Isolation of psychrophilic halophiles from the Antarctic polar desert Hall, Caleb Litteljohn Bacteriology 1968 v, 55 leaves application/pdf http://hdl.handle.net/10919/64764 en eng Virginia Polytechnic Institute OCLC# 38301115 http://hdl.handle.net/10919/64764 In Copyright http://rightsstatements.org/vocab/InC/1.0/ LD5655.V855 1968.H33 Thesis Text 1968 ftvirginiatec 2024-05-01T01:24:05Z Saline soils in the Dry Valley region of McMurdo Sound, Antarctica, contained bacteria showing salt tolerance or requirement. Soils were plated by the spread plate method on soil extract-peptone-yeast extract media to which sodium chloride had been added in concentrations from 0 to15 per cent (w/v). Bacteria isolated from these media at 2 C, 5 C, and 15 C were predominantly Gram negative rods with few Gram positive rods and cocci. No filamentous fungi or Halobacterium spp. were observed on the media used. At 15 C there were no isolates from media containing greater than 15 percent added salt; however, counts of 1.4 x 10 colonies per gram of soil were found at this concentration. As the incubation temperatures were lowered, salt tolerance was lowered. The data indicate that the limited soil microflora observed in saline soils and ponds may be attributed to a combination of low maximal summer temperature and high salinity. Master of Science Thesis Antarc* Antarctic Antarctica McMurdo Sound polar desert VTechWorks (VirginiaTech) |
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VTechWorks (VirginiaTech) |
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English |
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LD5655.V855 1968.H33 |
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LD5655.V855 1968.H33 Hall, Caleb Litteljohn Isolation of psychrophilic halophiles from the Antarctic polar desert |
topic_facet |
LD5655.V855 1968.H33 |
description |
Saline soils in the Dry Valley region of McMurdo Sound, Antarctica, contained bacteria showing salt tolerance or requirement. Soils were plated by the spread plate method on soil extract-peptone-yeast extract media to which sodium chloride had been added in concentrations from 0 to15 per cent (w/v). Bacteria isolated from these media at 2 C, 5 C, and 15 C were predominantly Gram negative rods with few Gram positive rods and cocci. No filamentous fungi or Halobacterium spp. were observed on the media used. At 15 C there were no isolates from media containing greater than 15 percent added salt; however, counts of 1.4 x 10 colonies per gram of soil were found at this concentration. As the incubation temperatures were lowered, salt tolerance was lowered. The data indicate that the limited soil microflora observed in saline soils and ponds may be attributed to a combination of low maximal summer temperature and high salinity. Master of Science |
author2 |
Bacteriology |
format |
Thesis |
author |
Hall, Caleb Litteljohn |
author_facet |
Hall, Caleb Litteljohn |
author_sort |
Hall, Caleb Litteljohn |
title |
Isolation of psychrophilic halophiles from the Antarctic polar desert |
title_short |
Isolation of psychrophilic halophiles from the Antarctic polar desert |
title_full |
Isolation of psychrophilic halophiles from the Antarctic polar desert |
title_fullStr |
Isolation of psychrophilic halophiles from the Antarctic polar desert |
title_full_unstemmed |
Isolation of psychrophilic halophiles from the Antarctic polar desert |
title_sort |
isolation of psychrophilic halophiles from the antarctic polar desert |
publisher |
Virginia Polytechnic Institute |
publishDate |
1968 |
url |
http://hdl.handle.net/10919/64764 |
genre |
Antarc* Antarctic Antarctica McMurdo Sound polar desert |
genre_facet |
Antarc* Antarctic Antarctica McMurdo Sound polar desert |
op_relation |
OCLC# 38301115 http://hdl.handle.net/10919/64764 |
op_rights |
In Copyright http://rightsstatements.org/vocab/InC/1.0/ |
_version_ |
1799469112564383744 |