Motility of the giant sulfur bacteria Beggiatoa in the marine environment
Beggiatoa inhabit the microoxic zone in sediments. They oxidize reduced sulfur compounds such as sulfide with oxygen or nitrate. Beggiatoa move by gliding and respond to stimuli like oxygen, light and sulfide. Using these substances for orientation, they can form dense mats on the sediment surface....
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Universität Bremen
2010
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ftsubbremen:oai:media.suub.uni-bremen.de:Publications/elib/71 2023-05-15T15:06:44+02:00 Motility of the giant sulfur bacteria Beggiatoa in the marine environment Motilität der großen Schwefelbakterien Beggiatoa im marinen Umfeld Dunker, Rita Jørgensen, Bo Barker Fischer, Ulrich 2010-12-15 application/pdf https://media.suub.uni-bremen.de/handle/elib/71 https://nbn-resolving.org/urn:nbn:de:gbv:46-00101847-18 eng eng Universität Bremen FB2 Biologie/Chemie https://media.suub.uni-bremen.de/handle/elib/71 urn:nbn:de:gbv:46-00101847-18 info:eu-repo/semantics/openAccess Beggiatoa sulfur bacteria microbial mat temperature response temperature adaptation gliding speed gliding motility random walk chemotaxis 570 570 Life sciences biology ddc:570 Dissertation doctoralThesis 2010 ftsubbremen 2022-11-09T07:09:17Z Beggiatoa inhabit the microoxic zone in sediments. They oxidize reduced sulfur compounds such as sulfide with oxygen or nitrate. Beggiatoa move by gliding and respond to stimuli like oxygen, light and sulfide. Using these substances for orientation, they can form dense mats on the sediment surface. Gliding motility as a function of temperature revealed that the temperature range of gliding correlated with the climatic origin of the filaments. The filaments were accordingly well adapted to the temperature regime of their origin. Consequently, an examination of Beggiatoa in arctic fjord sediments on the west coast of the archipelago Svalbard demonstrated that the filaments grow well under permanently cold conditions where they constituted even up to 15 % of the prokaryotic biomass. Observations of Beggiatoa in an artificial gradient of oxygen sulfide shed light on the mechanism used to orient in the microoxic environment. A model based on these observations was developed to explain their distribution in the sediment where Beggiatoa cannot be observed by eye. Doctoral or Postdoctoral Thesis Arctic Svalbard Media SuUB Bremen (Staats- und Universitätsbibliothek Bremen) Arctic Svalbard |
institution |
Open Polar |
collection |
Media SuUB Bremen (Staats- und Universitätsbibliothek Bremen) |
op_collection_id |
ftsubbremen |
language |
English |
topic |
Beggiatoa sulfur bacteria microbial mat temperature response temperature adaptation gliding speed gliding motility random walk chemotaxis 570 570 Life sciences biology ddc:570 |
spellingShingle |
Beggiatoa sulfur bacteria microbial mat temperature response temperature adaptation gliding speed gliding motility random walk chemotaxis 570 570 Life sciences biology ddc:570 Dunker, Rita Motility of the giant sulfur bacteria Beggiatoa in the marine environment |
topic_facet |
Beggiatoa sulfur bacteria microbial mat temperature response temperature adaptation gliding speed gliding motility random walk chemotaxis 570 570 Life sciences biology ddc:570 |
description |
Beggiatoa inhabit the microoxic zone in sediments. They oxidize reduced sulfur compounds such as sulfide with oxygen or nitrate. Beggiatoa move by gliding and respond to stimuli like oxygen, light and sulfide. Using these substances for orientation, they can form dense mats on the sediment surface. Gliding motility as a function of temperature revealed that the temperature range of gliding correlated with the climatic origin of the filaments. The filaments were accordingly well adapted to the temperature regime of their origin. Consequently, an examination of Beggiatoa in arctic fjord sediments on the west coast of the archipelago Svalbard demonstrated that the filaments grow well under permanently cold conditions where they constituted even up to 15 % of the prokaryotic biomass. Observations of Beggiatoa in an artificial gradient of oxygen sulfide shed light on the mechanism used to orient in the microoxic environment. A model based on these observations was developed to explain their distribution in the sediment where Beggiatoa cannot be observed by eye. |
author2 |
Jørgensen, Bo Barker Fischer, Ulrich |
format |
Doctoral or Postdoctoral Thesis |
author |
Dunker, Rita |
author_facet |
Dunker, Rita |
author_sort |
Dunker, Rita |
title |
Motility of the giant sulfur bacteria Beggiatoa in the marine environment |
title_short |
Motility of the giant sulfur bacteria Beggiatoa in the marine environment |
title_full |
Motility of the giant sulfur bacteria Beggiatoa in the marine environment |
title_fullStr |
Motility of the giant sulfur bacteria Beggiatoa in the marine environment |
title_full_unstemmed |
Motility of the giant sulfur bacteria Beggiatoa in the marine environment |
title_sort |
motility of the giant sulfur bacteria beggiatoa in the marine environment |
publisher |
Universität Bremen |
publishDate |
2010 |
url |
https://media.suub.uni-bremen.de/handle/elib/71 https://nbn-resolving.org/urn:nbn:de:gbv:46-00101847-18 |
geographic |
Arctic Svalbard |
geographic_facet |
Arctic Svalbard |
genre |
Arctic Svalbard |
genre_facet |
Arctic Svalbard |
op_relation |
https://media.suub.uni-bremen.de/handle/elib/71 urn:nbn:de:gbv:46-00101847-18 |
op_rights |
info:eu-repo/semantics/openAccess |
_version_ |
1766338292347830272 |