Atrazine-Induced Chlorosis in Synechococcus elongatus Cells View Full Text


Ontology type: schema:ScholarlyArticle     


Article Info

DATE

2004-04

AUTHORS

Óscar González-Barreiro, Carmen Rioboo, Angeles Cid, Concepción Herrero

ABSTRACT

The effects of a widely used herbicide, atrazine, on the freshwater cyanobacterium Synechococcus elongatus were studied. The cyanobacteria were exposed to varying concentrations of atrazine (0.025, 0.05, 0.1, 0.25, and 0.75 microM) for 96 h. Different parameters such as growth, autofluorescence of chlorophyll a, pigment content, volume, and internal granularity of the cells were determined daily. Differences were detected between cultures with and cultures without atrazine for the parameters analyzed. Atrazine exposure induced the process of chlorosis in cyanobacterial cells, given that this herbicide has an effect on photosynthesis, chlorotic subpopulations having low values of chlorophyll a autofluorescence. More unpigmented subpopulations (chlorotic) appeared as the atrazine concentration increased and better growth rates resulted. Atrazine also induced changes in cell volume and internal granularity, these being most apparent after 48 h of exposure and in cultures with higher atrazine concentrations (0.25 and 0.75 microM). More... »

PAGES

301-307

Identifiers

URI

http://scigraph.springernature.com/pub.10.1007/s00244-003-2149-z

DOI

http://dx.doi.org/10.1007/s00244-003-2149-z

DIMENSIONS

https://app.dimensions.ai/details/publication/pub.1018245484

PUBMED

https://www.ncbi.nlm.nih.gov/pubmed/15195801


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