Biomaterial Database

Growth & toxicity of Bacillus thuringiensis var israelensis. 1989

S Y Desai, and Y I Shethna

Chemically defined media containing glutamic acid, glutamine and aspartic acid at a 20 mM concentration individually supported abundant growth and sporulation of Bacillus thuringiensis var israelensis. The parasporal crystals produced in these media were toxic to fourth instar larvae of Culex pipiens quinquefasciatus Say. The medium containing 20 mM of glutamine induced early sporulation of B. thuringiensis var israelensis. An LC50 value of 3.92 micrograms/l was obtained. Calcium alginate and agar agar immobilized formulations of Bacillus thuringiensis var israelensis exhibited toxicity of 90 per cent and above to C. pipiens quinquefasciatus Say larvae, over a period of 90 days.

UI	MeSH Term	Description	Entries
D010572	Pest Control, Biological	Use of naturally-occuring or genetically-engineered organisms to reduce or eliminate populations of pests.	Biological Pest Control,Biologic Pest Control,Pest Control, Biologic,Biologic Pest Controls,Biological Pest Controls,Pest Controls, Biologic,Pest Controls, Biological
D003465	Culex	A genus of mosquitoes (CULICIDAE) commonly found in tropical regions. Species of this genus are vectors for ST. LOUIS ENCEPHALITIS as well as many other diseases of man and domestic and wild animals.	Culices
D003470	Culture Media	Any liquid or solid preparation made specifically for the growth, storage, or transport of microorganisms or other types of cells. The variety of media that exist allow for the culturing of specific microorganisms and cell types, such as differential media, selective media, test media, and defined media. Solid media consist of liquid media that have been solidified with an agent such as AGAR or GELATIN.	Media, Culture
D004731	Endotoxins	Toxins closely associated with the living cytoplasm or cell wall of certain microorganisms, which do not readily diffuse into the culture medium, but are released upon lysis of the cells.	Endotoxin
D006460	Hemolysin Proteins	Proteins from BACTERIA and FUNGI that are soluble enough to be secreted to target ERYTHROCYTES and insert into the membrane to form beta-barrel pores. Biosynthesis may be regulated by HEMOLYSIN FACTORS.	Hemolysin,Hemolysins,Hemalysins,Proteins, Hemolysin
D000083722	Bacillus thuringiensis Toxins	Endotoxins produced by BACILLUS THURINGIENSIS used in transgenic plants and insecticides. When eaten by a susceptible insect they are protease activated in the insect midgut resulting in death from bacterial septicemia.	B thuringiensis Toxins,B. thuringiensis Toxins,Bt Toxin,Bt Toxins,Toxin, Bt,Toxins, B thuringiensis,Toxins, B. thuringiensis
D000818	Animals	Unicellular or multicellular, heterotrophic organisms, that have sensation and the power of voluntary movement. Under the older five kingdom paradigm, Animalia was one of the kingdoms. Under the modern three domain model, Animalia represents one of the many groups in the domain EUKARYOTA.	Animal,Metazoa,Animalia
D001413	Bacillus thuringiensis	A species of gram-positive bacteria which may be pathogenic for certain insects. It is used for the biological control of the Gypsy moth.	Bacilan,Dipel,Thuricide
D001426	Bacterial Proteins	Proteins found in any species of bacterium.	Bacterial Gene Products,Bacterial Gene Proteins,Gene Products, Bacterial,Bacterial Gene Product,Bacterial Gene Protein,Bacterial Protein,Gene Product, Bacterial,Gene Protein, Bacterial,Gene Proteins, Bacterial,Protein, Bacterial,Proteins, Bacterial
D001427	Bacterial Toxins	Toxic substances formed in or elaborated by bacteria; they are usually proteins with high molecular weight and antigenicity; some are used as antibiotics and some to skin test for the presence of or susceptibility to certain diseases.	Bacterial Toxin,Toxins, Bacterial,Toxin, Bacterial