Effect of Gramoxone Herbicide on Spore Viability and Larvicidal activity of Bacillus sphaericus 2362 and 1593 strains

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dc.contributor.authorBerber, İsmet
dc.contributor.authorAtalan, Ekrem
dc.contributor.authorÇökmüş, Cumhur
dc.date.accessioned2014-09-03T12:29:18Z
dc.date.available2014-09-03T12:29:18Z
dc.date.issued2003
dc.description.abstractSpore viability and larvacidal activity of B. sphaeri-cus 2362 and 1593 strains were monitored in media con-taining Gramaxone® herbicide. Minimal Inhibitory Con-centrations (MICs) of the herbicide were determined for each of the mosquito pathogenic strains. Addition of paraquat into the media suppressed the spore germination after 24 and 48 h, but no influence was observed on parasporal inclusions containing insecticidal toxin pro-teins. SDS-PAGE analysis confirmed the presence of the so-called binary toxin comprising two proteins that are deposited in parasporal crystals treated with the herbicide. Moreover, the number of heat-resistant spores and total cell numbers of test strains were reduced drastically when test strains were grown in media containing 50, 100 and 200 mg ml-1 of paraquat. In contrast, there were no differ-ences between heat-resistant spore counts of both strains when grown under diet concentrations of less than 50 mg ml-1. This study revealed that B. sphaericus 2362 strain has a higher mosquito larvacidal activity than 1593 strain in the presence of paraquat in the media. Thus, the use of Gramaxone® herbicide can have harmful effects on mos-quitocidal biological control agents.
dc.identifier.citationBerber, İ., Atalan, E., Çökmüş, C. "Effect of Gramoxone Herbicide on Spore Viability and Larvicidal activity of Bacillus sphaericus 2362 and 1593 strains", Fresenius Environmental Bulletin, Vol.12, No.11, pp.1338-1445.
dc.identifier.urihttp://www.psp-parlar.de/pdf/F_23_005_pp1338_1344.pdf
dc.identifier.urihttps://hdl.handle.net/11486/524
dc.language.isotr
dc.publisherFresenius Environmental Bulletin
dc.relation.publicationcategoryMakale - Kategorisiz
dc.subjectBacillus sphaericus
dc.subjectHerbicide
dc.subjectSpore viability
dc.subjectLarvicidal activity
dc.subjectParaquat
dc.titleEffect of Gramoxone Herbicide on Spore Viability and Larvicidal activity of Bacillus sphaericus 2362 and 1593 strains
dc.typeArticle

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