L H Yang1, H Xiong, O O Lee, S-H Qi, P-Y Qian. 1. Department of Biology and Coastal Marine Laboratory, Hong Kong University of Science and Technology, Kowloon, Hong Kong SAR, PR China.
Abstract
AIMS: Experiments were designed to investigate the effect of agitation on the production of violacein by a marine bacterium Pseudoalteromonas luteoviolacea. METHODS AND RESULTS: A marine sponge-associated bacterium, P. luteoviolacea, was grown at different agitation speeds. Agitation did not have a significant effect on bacterial growth, but had a profound effect on the size of bacterial aggregate. The production of violacein was the highest under stagnant conditions and decreased with the increase of the agitation speed. CONCLUSIONS: Agitation affected the aggregation of bacterial cells, which, in turn, affected violacein production by P. luteoviolacea. SIGNIFICANCE AND IMPACT OF THE STUDY: This study suggests that P. luteoviolacea produced the highest amount of violacein when it was cultured under stagnant conditions.
AIMS: Experiments were designed to investigate the effect of agitation on the production of violacein by a marine bacteriumPseudoalteromonas luteoviolacea. METHODS AND RESULTS: A marine sponge-associated bacterium, P. luteoviolacea, was grown at different agitation speeds. Agitation did not have a significant effect on bacterial growth, but had a profound effect on the size of bacterial aggregate. The production of violacein was the highest under stagnant conditions and decreased with the increase of the agitation speed. CONCLUSIONS:Agitation affected the aggregation of bacterial cells, which, in turn, affected violacein production by P. luteoviolacea. SIGNIFICANCE AND IMPACT OF THE STUDY: This study suggests that P. luteoviolacea produced the highest amount of violacein when it was cultured under stagnant conditions.
Authors: Sigrid Hakvåg; Espen Fjaervik; Geir Klinkenberg; Sven Even F Borgos; Kjell D Josefsen; Trond E Ellingsen; Sergey B Zotchev Journal: Mar Drugs Date: 2009-11-12 Impact factor: 5.118
Authors: Claudia Hornung; Anja Poehlein; Frederike S Haack; Martina Schmidt; Katja Dierking; Andrea Pohlen; Hinrich Schulenburg; Melanie Blokesch; Laure Plener; Kirsten Jung; Andreas Bonge; Ines Krohn-Molt; Christian Utpatel; Gabriele Timmermann; Eva Spieck; Andreas Pommerening-Röser; Edna Bode; Helge B Bode; Rolf Daniel; Christel Schmeisser; Wolfgang R Streit Journal: PLoS One Date: 2013-02-06 Impact factor: 3.240