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• W1987837383 abstract "AME Aquatic Microbial Ecology Contact the journal Facebook Twitter RSS Mailing List Subscribe to our mailing list via Mailchimp HomeLatest VolumeAbout the JournalEditorsSpecials AME 66:237-246 (2012) - DOI: https://doi.org/10.3354/ame01579 Variation in cell volume and community composition of bacteria in response to temperature Johanna Sjöstedt1,*, Åke Hagström1, Ulla Li Zweifel2 1Department of Natural Sciences, Linnaeus University, 39182, Kalmar, Sweden 2Department of Cell and Molecular Biology, University of Gothenburg, 405 30 Göteborg, Sweden *Email: johanna.sjostedt@lnu.se ABSTRACT: Although temperature is a key parameter controlling the activity and growth of all microorganisms, information about how water temperature may structure the bacterioplankton community is not consistent. We examined the relationship between temperature and the community composition, cell volume, and morphology of marine bacterioplankton in 4 continuous cultures harbouring multispecies communities. All 4 cultures were maintained at a turnover time of 0.04 h−1 but at different temperatures of 10, 15, 20, and 25°C. Denaturing gradient gel electrophoresis analyses showed that the community composition shifted in response to temperature. Cell volumes were determined from digital photomicrographs using an image analysis program, which also allowed the identification of 3 morphological types of bacteria: cocci-, rod-, and vibrio-shaped bacteria. Mean bacterial cell volume decreased with increasing temperature, e.g., by 39% when the temperature was increased from 10°C to 20°C. When the temperature increased, the bacterial morphology also shifted from dominance by rod- and vibrio-shaped bacteria to dominance by coccoid bacteria. The results clearly indicate the potential role of temperature in driving the community succession of bacterioplankton and in selecting for smaller cells at higher temperatures. KEY WORDS: Temperature · Cell volume · Bacterioplankton · Morphology Full text in pdf format PreviousNextCite this article as: Sjöstedt J, Hagström Å, Zweifel UL (2012) Variation in cell volume and community composition of bacteria in response to temperature. Aquat Microb Ecol 66:237-246. https://doi.org/10.3354/ame01579 Export citation RSS - Facebook - Tweet - linkedIn Cited by Published in AME Vol. 66, No. 3. Online publication date: July 09, 2012 Print ISSN: 0948-3055; Online ISSN: 1616-1564 Copyright © 2012 Inter-Research." @default.
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• W1987837383 title "Variation in cell volume and community composition of bacteria in response to temperature" @default.
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