Effect of herbicide metolachlor on brown tide alga Aureococcus anophagefferens growth and detoxification

Document Type

Conference Proceeding

Publication Date

1-1-2008

Abstract

The widespread use of metolachlor, a chloroacetamide herbicide, coincided with the brown tide algal bloom in south shore estuaries in Long Island, NY in 1985-86. We postulated that brown tide alga, Aureococcus anophagefferens, an unicellular alga now known to be capable of using an organic nitrogen source, detoxify low levels of metolachlor and derive product(s) enhancing its growth. In this study we examined the effect of metolachlor and nickel on algal growth and intracellular thiol composition. Aureococcus anophagefferens, cultured in defined seawater media Aquil, was exposed to metolachlor (0-10 μg/L) and Ni (0-10 pM Ni2+). Intracellular thiol compounds including glutathione, a tri-peptide known to antidote xenobiotics in many living cells, were quantified. Metolachlor degradation rate and products are yet to be determined to explain the growth enhancement effect.

Identifier

85026549855 (Scopus)

Publication Title

ACS Division of Environmental Chemistry Preprints of Extended Abstracts

ISSN

15246434

First Page

533

Last Page

536

Issue

2

Volume

48

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