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Bacterial induction of temporary cyst formation by the dinoflagellate Lingulodinium polyedrum
| Content Provider | Semantic Scholar |
|---|---|
| Author | Mayali, Xavier Franks, Peter J. Azam, Farooq E |
| Copyright Year | 2007 |
| 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 inter- action. 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 tempo- rary 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 algici- dal 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. |
| Starting Page | 51 |
| Ending Page | 62 |
| Page Count | 12 |
| File Format | PDF HTM / HTML |
| DOI | 10.3354/ame01143 |
| Volume Number | 50 |
| Alternate Webpage(s) | http://www.bashanfoundation.org/contributions/Mayali-X/xavierpolyedrum.pdf |
| Alternate Webpage(s) | https://www.int-res.com/articles/ame2008/50/a050p051.pdf |
| Alternate Webpage(s) | https://doi.org/10.3354/ame01143 |
| Language | English |
| Access Restriction | Open |
| Content Type | Text |
| Resource Type | Article |
