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On the way to cyanobacterial blooms: impact of the herbicide metribuzin on the competition between a green alga (Scenedesmus) and a cyanobacterium (Microcystis).
Chemosphere. 2006 Oct; 65(4):618-26.C

Abstract

The hypothesis that exposure to a common and widely applied photosynthesis-inhibiting herbicide, metribuzin, would alter the outcome of the competitive battle between susceptible green algae (Scenedesmus obliquus) and tolerant cyanobacteria (Microcystis aeruginosa) was tested. In a long-term (17 d) experiment, Scenedesmus and Microcystis populations as well as mixtures that started with different inoculum composition (i.e. 3:1, 1:1 and 1:3 Scenedesmus:Microcystis) were grown in the absence or presence of metribuzin (100 microg l-1). In the absence of metribuzin, Scenedesmus was competitively superior and out-competed Microcystis regardless the initial composition of the mixed communities. However, this competitive outcome was reversed completely in the presence of metribuzin, where despite growth inhibition Microcystis became dominant. Hence, photosynthesis-inhibiting herbicides may not only affect algal community structure, but also provide cyanobacteria founder populations a window for dominance and thus play an important role in promoting cyanobacteria blooms.

Authors+Show Affiliations

Lürling M
Department of Environmental Sciences, Aquatic Ecology and Water Quality Management Group, Wageningen University, P.O. Box 8080, 6700 DD Wageningen, The Netherlands. miquel.lurling@wur.nl
Roessink I
No affiliation info available

MeSH

Drug ResistanceHerbicidesMicrocystisPhotosynthesisScenedesmusTriazinesWater Pollutants, Chemical

Pub Type(s)

Journal Article
Research Support, Non-U.S. Gov't

Language

eng

PubMed ID

16540149

Citation

Lürling, Miquel, and Ivo Roessink. "On the Way to Cyanobacterial Blooms: Impact of the Herbicide Metribuzin On the Competition Between a Green Alga (Scenedesmus) and a Cyanobacterium (Microcystis)." Chemosphere, vol. 65, no. 4, 2006, pp. 618-26.
Lürling M, Roessink I. On the way to cyanobacterial blooms: impact of the herbicide metribuzin on the competition between a green alga (Scenedesmus) and a cyanobacterium (Microcystis). Chemosphere. 2006;65(4):618-26.
Lürling, M., & Roessink, I. (2006). On the way to cyanobacterial blooms: impact of the herbicide metribuzin on the competition between a green alga (Scenedesmus) and a cyanobacterium (Microcystis). Chemosphere, 65(4), 618-26.
Lürling M, Roessink I. On the Way to Cyanobacterial Blooms: Impact of the Herbicide Metribuzin On the Competition Between a Green Alga (Scenedesmus) and a Cyanobacterium (Microcystis). Chemosphere. 2006;65(4):618-26. PubMed PMID: 16540149.
* Article titles in AMA citation format should be in sentence-case
TY - JOUR T1 - On the way to cyanobacterial blooms: impact of the herbicide metribuzin on the competition between a green alga (Scenedesmus) and a cyanobacterium (Microcystis). AU - Lürling,Miquel, AU - Roessink,Ivo, Y1 - 2006/03/15/ PY - 2005/06/19/received PY - 2005/10/31/revised PY - 2006/01/31/accepted PY - 2006/3/17/pubmed PY - 2006/12/9/medline PY - 2006/3/17/entrez SP - 618 EP - 26 JF - Chemosphere JO - Chemosphere VL - 65 IS - 4 N2 - The hypothesis that exposure to a common and widely applied photosynthesis-inhibiting herbicide, metribuzin, would alter the outcome of the competitive battle between susceptible green algae (Scenedesmus obliquus) and tolerant cyanobacteria (Microcystis aeruginosa) was tested. In a long-term (17 d) experiment, Scenedesmus and Microcystis populations as well as mixtures that started with different inoculum composition (i.e. 3:1, 1:1 and 1:3 Scenedesmus:Microcystis) were grown in the absence or presence of metribuzin (100 microg l-1). In the absence of metribuzin, Scenedesmus was competitively superior and out-competed Microcystis regardless the initial composition of the mixed communities. However, this competitive outcome was reversed completely in the presence of metribuzin, where despite growth inhibition Microcystis became dominant. Hence, photosynthesis-inhibiting herbicides may not only affect algal community structure, but also provide cyanobacteria founder populations a window for dominance and thus play an important role in promoting cyanobacteria blooms. SN - 0045-6535 UR - https://www.unboundmedicine.com/medline/citation/16540149/On_the_way_to_cyanobacterial_blooms:_impact_of_the_herbicide_metribuzin_on_the_competition_between_a_green_alga__Scenedesmus__and_a_cyanobacterium__Microcystis__ DB - PRIME DP - Unbound Medicine ER -