Bacterial induction of temporary cyst formation by the dinoflagellate Lingulodinium polyedrum
Year: 2007
Type: article
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 50:51-62 (2007) - DOI: https://doi.org/10.3354/ame01143 Bacterial induction of temporary cyst formation by the dinoflagellate Lingulodinium polyedrum Xavier Mayali*, Peter J. S. Franks, Farooq Azam Scripps Institution of Oceanography, University of California San Diego, 9500 Gilman Drive, La Jolla, California 92093-0211, USA *Email: [email protected] ABSTRACT: We report the isolation of 3 novel bacterial strains from the Bacteroidetes group capable of inducing temporary cyst formation by ecdysis in the bloom-forming dinoflagellate Lingulodinium polyedrum. Phylogenetic analysis of 16S rRNA revealed that 2 of these strains are most closely related to previously identified algicidal bacteria, indicating potentially similar mechanisms of interaction. Long-term (2 wk) co-incubations of algae and bacteria under a 12:12 h light:dark cycle resulted in decreased algal cell abundances (compared to bacteria-free controls) followed by temporary cyst formation. Short-term incubations in continuous light resulted in no apparent effects of the bacteria over 2 d, but incubations in continuous darkness resulted in algal ecdysis after 24 h followed by significant decreases in total algal cell abundances after 52 h compared to controls without algicidal bacteria. We also showed that ecdysis resulted in the removal of bacteria attached to the surface of the algal cells, demonstrating a potentially direct benefit to the algae if the bacteria are harmful. We further suggest that negative interactions of bacteria on phytoplankton may be enhanced in the absence of light. KEY WORDS: Ecdysis · Cyst · Bacteria · Dinoflagellate · Bloom · Algicidal Full text in pdf format PreviousNextCite this article as: Mayali X, Franks PJS, Azam F (2007) Bacterial induction of temporary cyst formation by the dinoflagellate Lingulodinium polyedrum. Aquat Microb Ecol 50:51-62. https://doi.org/10.3354/ame01143 Export citation RSS - Facebook - Tweet - linkedIn Cited by Published in AME Vol. 50, No. 1. Online publication date: December 12, 2007 Print ISSN: 0948-3055; Online ISSN: 1616-1564 Copyright © 2007 Inter-Research.
Source: Aquatic Microbial Ecology
DOI: 10.3354/ame01143
Authors: X Mayali, PJS Franks, F Azam
Institution: University of California San Diego
Language: English
Subfield: Oceanography
Field: Earth and Planetary Sciences
Domain: Physical Sciences
SDG: Life below water
Open Access status: bronze
OpenAlex ID: W1984779876