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THE EFFECT OF SALICYLIC ACID AND TRIACONTANOL ON BIOMASS PRODUCTION AND IMIDACLOPIRID REMOVAL CAPACITY BY CYANOBACTERIA


HALEH AMINFARZANEH AND ERGIN DUYGU*


Ankara University, Science Faculty, Department of Biology, 06100
Tandogan/ANKARA
e-mail:aeduygu@science.ankara.edu.tr
(Received April 15, 2010; Accepted June 16, 2010))
ABSTRACT
Pesticide removal capacities of Synechocystis sp. and Phormidium sp. were investigated in
BG11 media. Imidacloprid (IMI) is a widely used systemic insecticide to control plant pests
following soil, seed or foliar applications, and is subject to cleaning. Bioremoval is one of the
economical water treatment techniques in remediation. Trials were carried out at pH 7.5 for
IMI at media with and without triacontanol (TRIA), a naturally occuring plant hormone and
Salicylic acid (SA). The removal capacities of Synechocystis sp. and Phormidium sp. were
found higher in media containing TRIA and Salicylic acid. The removal efficiencies were
measured at 150 mg L-1 concentrations of IMI. Synechocystis sp. and Phormidium sp. had the
maximum values of removal of IMI in the media containing the hormone and Salicylic acid.
The results showed that TRIA and Salicylic acid could be considered as a stimulant in pesticide
removal by the isolated cyanobacteria cultures.
KEYWORDS: Salicylic acid, triacontanol, cyanobacteria, imidaclopirid, wastewater
INTRODUCTION
As known, ovicidal and larvicidal insecticides are used widely for
agricultural, industrial and residential purposes. Their wide use in
agriculture has been one of the major factors in the increased productivity in

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