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The sequence diversity of the Bacillus thurinigiensis flagellin (H antigen [Hag]) protein is analyzed and compared with H serotype diversity along with other Bacillus ceres sensu lato species and strains. The amplification, cloning and determination of the nucleotide sequences of the flagellin allels from B. thuringiensis H serotypes and from B. thuringiensis-related species was reported in the Bacillus cereus senso lacto group.

The sequence diversity of flagellins among serovars from the same H serotypes and the hag genes in Bacillus thuringiensis strains are analyzed. The studies have shown that most clusters contained strains and serovars from the same H serotypes, whereas clusters VII and VIII contained serovars from different H serotypes.

No abstract. [ABSTRACT FROM AUTHOR]

The effects of 6 fungicides (chlorothalonil, maneb, thiophanate-methyl, mancozeb, metalaxyl+mancozeb and zineb) and two herbicides (diquat and glufosinate-ammonium) used commercially in potato fields were evaluated in vitro on Beauveria bassiana (Balsamo) Vuillemin, a fungalpathogen of the Colorado potato beetle, Leptinotarsa decemlineata (Say). All 6 fungicides tested along with the herbicide glufosinate-ammonium inhibited B. bassiana mycelial growth and sporulation. However,the 2nd herbicide tested, diquat, had no noticable effect on B. bassiana mycelial growth and sporulation. Remarkably, diquat synergized the insecticidal activity of B. bassiana in the simultaneous treatments on Colorado potato beetle adults and caused 50-76.6% mortality. [ABSTRACT FROM AUTHOR]