Chitinase producing Bt strains

Haim B. Gunner; Matthew Zimet; Sarah Berger

Treesearch

Chitinase producing Bt strains

Informally Refereed

Authors:

Haim B. Gunner, Matthew Zimet, Sarah Berger

Year:

1985

Type:

General Technical Report

Station:

Northern Research Station

Source:

In: Grimble, David G.; Lewis, Franklin B., coords. Proceedings, Symposium: Microbial control of spruce budworms and gypsy moths; 1984 April 10-12; Windsor Locks, CT. Gen. Tech. Rep. NE-100. Broomall, PA: U.S. Department of Agriculture, Forest Service, Northeastern Forest Experiment Station. 103-108

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Abstract

Screening of 402 strains of more than 18 varieties of Bacillus thuringiensis showed chitinase to be inducible in virtually every serovar tested. Though the chitinase titre varied among strains, there was a strong correlation between enhanced lethality to spruce budworm, Choristoneura fumiferana (Clemens), and an increase in chitinase titre within the serovar. Strains grown in chitinase inducing medium gave a more rapid and higher kill than those grown in sporulation medium, and a faster kill than the currently used commercial strain.

Parent Publication

Proceedings, Symposium: Microbial control of spruce budworms and gypsy moths

Citation

Gunner, Haim B.; Zimet, Matthew; Berger, Sarah. 1985. Chitinase producing Bt strains. In: Grimble, David G.; Lewis, Franklin B., coords. Proceedings, Symposium: Microbial control of spruce budworms and gypsy moths; 1984 April 10-12; Windsor Locks, CT. Gen. Tech. Rep. NE-100. Broomall, PA: U.S. Department of Agriculture, Forest Service, Northeastern Forest Experiment Station. 103-108