indexado en
- Base de datos de revistas académicas
- Genamics JournalSeek
- Claves Académicas
- DiarioTOCs
- Infraestructura Nacional de Conocimiento de China (CNKI)
- cimago
- Acceso a Investigación Global en Línea en Agricultura (AGORA)
- Biblioteca de revistas electrónicas
- Búsqueda de referencia
- Directorio de indexación de revistas de investigación (DRJI)
- Universidad Hamdard
- EBSCO AZ
- OCLC-WorldCat
- Catálogo en línea SWB
- Biblioteca Virtual de Biología (vifabio)
- Publón
- miar
- Comisión de Becas Universitarias
- Fundación de Ginebra para la Educación e Investigación Médica
- pub europeo
- Google Académico
Enlaces útiles
Comparte esta página
Folleto de diario
Revistas de acceso abierto
- Administración de Empresas
- Agricultura y Acuicultura
- Alimentación y Nutrición
- Bioinformática y Biología de Sistemas
- Bioquímica
- Ciencia de los Materiales
- Ciencia general
- Ciencias Ambientales
- Ciencias Clínicas
- Ciencias farmacéuticas
- Ciencias Médicas
- Ciencias Veterinarias
- Enfermería y Cuidado de la Salud
- Genética y Biología Molecular
- Ingeniería
- Inmunología y Microbiología
- Neurociencia y Psicología
- Química
Abstracto
Successive Construction of β-Glucosidase Hyperproducers of Trichoderma Harzianum Using Microbial Biotechnology Techniques
Ahmed M. El-Bondkly, A. A. M. Aboshosha, N. H. Radwan and S. A. Dora
In an attempt to construct superior Trichoderma harzianum isolates for improvement β-glucosidase productivity, induction of mutants was applied. After application of UV irradiation and Ethyl methane sulfonate (EMS), 461 isolates were obtained, out of them 99 after UV application and 362 isolates after EMS treatments. Five isolates (two after UV application and three after EMS treatments) were selected on the basis of their highly productivity of both enzymes to be treated with doses of colchicine (0.1% and 0.2%) as a second step of induction mutation. After colchicine treatments, 191 isolates were obtained, out of them 40 isolates after treating the wild type strain, 70 isolates after treating the two UV induced-mutants with colchicine and 81 isolates after treating the three EMS induced-mutants with colchicine .These isolates were tested for their CMCase and β-glucosidase productivities. One isolate (D1/4) proved to be the highest producer for the two enzymes, since it produced 160% and 186% CMCase and β-glucosidase, respectively, more than the original strain. In addition, highest DNA content and also highest amounts of CMCase and β-glucosidase were obtained after EMS-treatments followed by colchicine application.