Mutagenicity of Bacillus thuringiensis exotoxin
نویسندگان
چکیده
منابع مشابه
Determination of exotoxin in Bacillus thuringiensis cells.
The presence of exotoxin in Bacillus thuringiensis was demonstrated and its quantity in the cells determined. The concentration of exotoxin in the producing microorganism is approximately half the concentration of ATP. Exotoxin is produced at such a rate that the cell excretes 1/5 to 1/4 of its exotoxin content into the medium per minute.
متن کاملCorrespondence of high levels of beta-exotoxin I and the presence of cry1B in Bacillus thuringiensis.
Examination of 640 natural isolates of Bacillus thuringiensis showed that the 58 strains (9%) whose supernatants were toxic to Anthonomus grandis (Coleoptera: Curculionidae) produced between 10 and 175 micro g of beta-exotoxin I per ml. We also found that 55 (46%) of a sample of 118 strains whose culture supernatants were not toxic to A. grandis nevertheless produced between 2 and 5 micro g/ml....
متن کاملDevelopment of an Enzyme - Linked Immunosorbent Assay for the & Exotoxin of Bacillus thuringiensis
A competitive enzyme-linked immunosorbent assay (ELISA) was developed to quantify the amount of @-exotoxin from Bacillus thuringiensis in solution and to evaluate the ability of the antibodies to distinguish among various natural and synthetic compounds related to the 8-exotoxin. The &exotoxin was coupled to several proteins via glutaraldehyde, diazotization, and periodate procedures. The antib...
متن کاملToxicity of Bacillus thuringiensis beta-exotoxin to three species of fruit flies (Diptera: Tephritidae).
The current study describes toxic effects of the Bacillus thuringiensis beta-exotoxin toward 3rd instars of 3 fruit fly species: Anastrepha ludens (Loew), A. obliqua (Macquart), and A. serpentina (Wiedemann). The beta-exotoxin was highly toxic to all 3 species tested, with LC50 values calculated as 0.641, 0.512, and 0.408 microgram/cm2 of filter paper used to expose the larvae, for A. ludens, A...
متن کاملذخیره در منابع من
با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید
ژورنال
عنوان ژورنال: Hereditas
سال: 2009
ISSN: 0018-0661
DOI: 10.1111/j.1601-5223.1977.tb00957.x