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  Phosphorus limitation and not light controls the extracellular release of allelopathic compounds by Trichormus doliolum (Cyanobacteria).

Elert, E. v., & Jüttner, F. (1997). Phosphorus limitation and not light controls the extracellular release of allelopathic compounds by Trichormus doliolum (Cyanobacteria). Limnology and Oceanography, 42(8), 1796-1802.

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Item Permalink: https://hdl.handle.net/11858/00-001M-0000-000F-E1FF-A Version Permalink: https://hdl.handle.net/11858/00-001M-0000-000F-E200-D
Genre: Journal Article

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von_Elert_1997.pdf (Publisher version), 2MB
 
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 Creators:
Elert, Eric von1, Author           
Jüttner, Friedrich, Author
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1Department Ecophysiology, Max Planck Institute for Limnology, Max Planck Institute for Evolutionary Biology, Max Planck Society, ou_976547              

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 Abstract: The planktonic freshwater cyanobacterium Trichormus doliolum. (Bharadw.) Komarek and Anagnostidis released secondary metabolites that strongly inhibited the growth of other cyanobacteria. The major allelopathic compound inhibited PS II-mediated photosynthetic electron transport. The allelopathic compounds were released under P-limited and replete exponential growth; the release of the major allelopathic compound, however, increased 30-fold under P-limited growth. Increased irradiance under P-limited growth led to elevated release of dissolved organic carbon, but there was no increase in release of the major allelopathic compound. This suggests that there are different control mechanisms for extracellular release of gross carbon and allelopathic secondary metabolices in T. doliolum. Allelopathic compounds released by T. doliolum grown under phosphorus limitation significantly reduced the growth of Anabaena variabilis even when the biomass of the latter was 20-fold greater than that of T. doliolum. This suggests that under P limitation less abundant species can exert allelopathic effects on more abundant taxa.

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Language(s): eng - English
 Dates: 1997-12
 Publication Status: Issued
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 Identifiers: eDoc: 123075
Other: 1692/S 37327
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Title: Limnology and Oceanography
  Alternative Title : Limnol. Oceanogr.
Source Genre: Journal
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Pages: - Volume / Issue: 42 (8) Sequence Number: - Start / End Page: 1796 - 1802 Identifier: ISSN: 0024-3590