Overproduction of Glucose Oxidase by Aspergillus tubingensis CTM 507 Randomly Obtained Mutants and Study of Its Insecticidal Activity against Ephestia kuehniella
Joint Authors
Tounsi, S.
Kriaa, Mouna
Ben Rhouma, Marwa
Ben Nasr, Yosri
Kammoun, Radhouane
Boukedi, Hanen
Mellouli, Lotfi
Source
Issue
Vol. 2020, Issue 2020 (31 Dec. 2020), pp.1-8, 8 p.
Publisher
Hindawi Publishing Corporation
Publication Date
2020-06-06
Country of Publication
Egypt
No. of Pages
8
Main Subjects
Abstract EN
In order to enhance the production of glucose oxidase (GOD), random mutagenesis of Aspergillus tubingensis CTM 507 was performed using the chemical and physical mutagens: nitric acid and UV irradiation, respectively.
The majority of the isolated mutants showed good GOD production, but only some mutants presented a significant overproduction, as compared with the parent strain.
The selected mutants (19 strains), showing an overproduction larger than 200%, are quite stable after three successive subcultures.
Among these, six strains revealed an important improvement in submerged fermentation.
The insecticidal activity of GOD produced by the wild and the selected mutant strains was evaluated against the third larval instars of E.
kuehniella.
Mutant strains U11, U12, U20, and U21, presenting the most important effect, displayed an LC50 value of 89.00, 88.51, 80.00, and 86.00 U/cm2, respectively, which was 1.5-fold more important than the wild strain (61 U/cm2).
According to histopathology observations, the GOD enzyme showed approximately similar damage on the E.
kuehniella midgut including rupture and disintegration of the epithelial layer and cellular vacuolization.
The data supports, for the first time, the use of GOD as a pest control agent against E.
kuehniella.
American Psychological Association (APA)
Kriaa, Mouna& Boukedi, Hanen& Ben Rhouma, Marwa& Ben Nasr, Yosri& Tounsi, S.& Mellouli, Lotfi…[et al.]. 2020. Overproduction of Glucose Oxidase by Aspergillus tubingensis CTM 507 Randomly Obtained Mutants and Study of Its Insecticidal Activity against Ephestia kuehniella. BioMed Research International،Vol. 2020, no. 2020, pp.1-8.
https://search.emarefa.net/detail/BIM-1138251
Modern Language Association (MLA)
Kriaa, Mouna…[et al.]. Overproduction of Glucose Oxidase by Aspergillus tubingensis CTM 507 Randomly Obtained Mutants and Study of Its Insecticidal Activity against Ephestia kuehniella. BioMed Research International No. 2020 (2020), pp.1-8.
https://search.emarefa.net/detail/BIM-1138251
American Medical Association (AMA)
Kriaa, Mouna& Boukedi, Hanen& Ben Rhouma, Marwa& Ben Nasr, Yosri& Tounsi, S.& Mellouli, Lotfi…[et al.]. Overproduction of Glucose Oxidase by Aspergillus tubingensis CTM 507 Randomly Obtained Mutants and Study of Its Insecticidal Activity against Ephestia kuehniella. BioMed Research International. 2020. Vol. 2020, no. 2020, pp.1-8.
https://search.emarefa.net/detail/BIM-1138251
Data Type
Journal Articles
Language
English
Notes
Includes bibliographical references
Record ID
BIM-1138251