Enduring toxicity of transgenic Anabaena PCC 7120 expressing mosquito larvicidal genes from Bacillus thuringiensis ssp. israelensis

Robert Manasherob, Zachariah Ngalo Otieno-Ayayo, Eitan Ben-Dov, Rina Miaskovsky, Sammy Boussiba, Arieh Zaritsky

Research output: Contribution to journalArticlepeer-review

11 Scopus citations

Abstract

Persistence of biological control agents against mosquito larvae was tested under simulated field conditions. Mosquito larvicidal activity of transgenic Anabaena PCC 7120 expressing cry4Aa, cry11Aa and p20 from Bacillus thuringiensis ssp. israelensis was greater than B. thuringiensis ssp. israelensis primary powder (fun 89C06D) or wettable powder (WP) (Bactimos products) when either mixed with silt or exposed to sunlight outdoors. Reduction of Bactimos primary powder toxicity was at least 10-fold higher than Anabaena's after mixing with silt. In outdoors experiments, Bactimos WP remained toxic (over 30% mortality of 3rd instar Aedes aegypti larvae) for 2-4 days only, while transgenic Anabaena's toxicity endured 8-21 days.

Original languageEnglish
Pages (from-to)997-1001
Number of pages5
JournalEnvironmental Microbiology
Volume5
Issue number10
DOIs
StatePublished - 1 Oct 2003

ASJC Scopus subject areas

  • Microbiology
  • Ecology, Evolution, Behavior and Systematics

Fingerprint

Dive into the research topics of 'Enduring toxicity of transgenic Anabaena PCC 7120 expressing mosquito larvicidal genes from Bacillus thuringiensis ssp. israelensis'. Together they form a unique fingerprint.

Cite this