Glutathione S-transferase activity in the maize weevil, sitophilus zeamais (Mostch.)
Loading...
Date
2015-04-09
Journal Title
Journal ISSN
Volume Title
Publisher
Abstract
Glutathione S-transferase activities in field populalions (Fo) of the maize weevil,
Sitophilus zeamais, were compared with their 3rd generation (F,) progeny which
were reared in the laboratory. Two substrates, 1 -chloro-2,4-dinitrobenzene (CDNB)
i and glutathione (GSH) were used in the tests and the Michaelis constant (K,,,) was
determined for both these substrates. Enzyme activity was detected using the
CDNB as the model substrate. The K,, values using CDNB were lower for the field
populations compared to the F, progeny which were reared without any exposure
insecticides. The data indicate that the insects collected from the field were better
able to metabolise xenobiotics than their laboratory reared progeny wl-iich were
not exposed to any insecticides.
Description
An article with 4 pages.
Keywords
Glutathione S-transferase, maize weevil, Sitophilus zeamais (mostch)