Regulation of crystal protein biosynthesis by Bacillus thuringiensis: I. Effects of mineral elements and pH

Içgen, Yasemin; İçgen, Bülent; Özcengiz, Gülay

doi:10.1016/s0923-2508(02)01367-0

Cited by 31 publications

(26 citation statements)

References 16 publications

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“…These results support Içgen et al (2002a) and Özkan et al (2003) concerning the importance of salts in several metabolic pathways, including Cry protein biosynthesis.…”

Section: Resultssupporting

confidence: 90%

“…Calcium and magnesium are important for secondary metabolism. The use of 100 g.l -1 of ground B. mori pupae provides 0.11 g.l -1 and 0,33 g.l -1 of calcium and magnesium, respectively, amounts similar to those used in other studies with different culture media (IÇGEN et al, 2002a;ÖZKAN et al, 2003) and in Arcas modified medium 01, used as standard in our study. The lack of appropriate sources of carbon in ground B. mori pupae was provide by addition of 4.50 g.l -1 glucose to the medium.…”

Section: Resultssupporting

confidence: 75%

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Desenvolvimento de um meio de cultura de baixo custo para Bacillus thuringiensis subsp. israelensis

Angelo

Vilas-Bôas

Santos

et al. 2013

Semin. Cienc. Biol. Saude

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“…These results support Içgen et al (2002a) and Özkan et al (2003) concerning the importance of salts in several metabolic pathways, including Cry protein biosynthesis.…”

Section: Resultssupporting

confidence: 90%

Section: Resultssupporting

confidence: 75%

Desenvolvimento de um meio de cultura de baixo custo para Bacillus thuringiensis subsp. israelensis

Angelo

Vilas-Bôas

Santos

et al. 2013

Semin. Cienc. Biol. Saude

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“…Entre as fontes orgânicas de nitrogênio, o extrato de levedura é bastante utilizado no cultivo de B. thuringiensis, porém peptona e derivados de soja apresentam resultados satisfatórios (VORA;SHETNA, 1999;IÇGEN;IÇGEN;ÖZCENGIZ, 2002b;MORRIS;DEAN, 1997). Como fontes alternativas, vêm se destacando farinhas derivadas de proteína animal (farinha de peixe e de crisálida) e alguns cereais (cevada e trigo) (ALVES et al, 1997;DEVI;RAVINDER;JAIDEV, 2005;GHRIBI;JAOUA, 2005;MORRIS;DEAN, 1997;PRABAKARAN;BALAMARAN, 2006;JAOUA, 1999).…”

Section: Segundo Deunclassified

“…Entretanto, não há consenso sobre qual porcentagem de sais é mais adequada, bem como quais os sais que devem ser adicionados (ARCAS; YANTORO;ERTOLA, 1987;IÇGEN;IÇGEN;ÖZCENGIZ, 2002a;ÖSKAN;IÇGEN;ÖZCENGIZ, 2003).…”

Section: Segundo Deunclassified

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Bacillus thuringiensis: características gerais e fermentação

2010

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ResumoO controle de insetos é realizado, em sua maioria, por produtos químicos; cujos efeitos cumulativos ocasionam grandes prejuízos ambientais e à saúde humana, destacando-se ainda a rápida seleção de insetos resistentes. O controle biológico por entomopatógenos é uma alternativa eficiente, principalmente devido a sua alta especificidade, ausência de resistência nos insetos alvos e baixo efeito residual no ambiente. Bacillus thuringiensis é uma bactéria Gram-positiva esporulante, produtora de cristais protéicos com atividade inseticida. Apesar do amplo uso B. thuringiensis no controle biológico, há poucos trabalhos publicados quanto a sua multiplicação, esporulação e produção de cristais, visto que muitas informações são segredos industriais. Esta revisão teve por objetivo reunir informações gerais sobre B. thuringiensis, bem como quanto sua produção em meios de cultivo. Palavras-chave: Bacillus thuringiensis, entomopatógeno, bioinseticida, controle biológico, fermentação AbstractThe insect control is carried out mostly by chemical products, whose cumulative effects cause serious losses to environmental and human health, highlighting rapid selection of resistant insects. Biological control by entomopathogenic bacteria is an efficient alternative, mainly due to high specificity, absence of resistance in the target insects and low environment residual effect. Bacillus thuringiensis is a Grampositive spore-forming bacterium that produces a parasporal crystal protein toxic for many insect species. Despite the widespread use of B. thuringiensis based products in biological control of insects, there are little studies about its multiplication, sporulation and crystal production, as so many trade secrets information. This revision was aimed at gathering general information about B. thuringiensis, as well as its production in culture media.

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Bacillus thuringiensis andBacillus sphaericus biopesticides production

El-Bendary

2006

J. Basic Microbiol.

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The long residual action and toxicity of the chemical insecticides have brought about serious environmental problems such as the emergence and spread of insecticide resistance in many species of vectors, mammalian toxicity, and accumulation of pesticide residues in the food chain. All these problems have highlighted the need for alternative biological control agents. Entomo-pathogenic Bacillus thuringiensis (Bt) and Bacillus sphaericus (Bs) are two safe biological control agents. They have attracted considerable interest as possible replacements for the chemical insecticides. Although microbial insecticides based on Bt and Bs are available for use, their high cost makes large-scale application impracticable in developing countries. This review focuses on the economic production of these two microorganisms by submerged fermentation and solid state fermentation using agro-industrial by-products and other wastes.

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Regulation of crystal protein biosynthesis by Bacillus thuringiensis: I. Effects of mineral elements and pH

Cited by 31 publications

References 16 publications

Desenvolvimento de um meio de cultura de baixo custo para Bacillus thuringiensis subsp. israelensis

Desenvolvimento de um meio de cultura de baixo custo para Bacillus thuringiensis subsp. israelensis

Bacillus thuringiensis: características gerais e fermentação

Bacillus thuringiensis andBacillus sphaericus biopesticides production

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