Efficacy of the toothpick weed Ammi visnaga L. (Apiaceae) fruit extracts on transaminase activity in certain tissues of Schistocerca gregaria (Forskal)(Orthoptera: Acrididae)
Ghoneim K, Al-Daly A, Khadrawy F, Amer M, Mahmoud MA
The present study aimed to investigate the disturbing effects of LC50 concentrations of ethanol, petroleum ether and n-butanol extracts (21.0, 12.0 and 22.5%, respectively) of Ammi visnaga fruits on the Glutamic oxaloacetic transaminase (GOT) and Glutamic pyruvic transaminase (GPT) activities in haemolymph and fat bodies of last instar nymphs and newly emerged adult females of the dangerous desert locust Schistocerca gregaria. A predominant enhancing effect was exhibited on the GOT activity in haemolymph of nymphs, regardless to the extracts. In haemolymph of adults, GOT activity was induced or reduced depending on the extract. In fat bodies, n-butanol extract considerably prohibited the enzyme activity in both nymphs and adults. In contrast, petroleum ether extract enhanced the enzyme activity. The ethanol extract exhibited inducing or reducing effects on the enzyme activity, depending on the nymphal age but induced the enzyme activity in adults. GPT activity was reduced in haemolymph of both nymphs and adults by n-butanol extract. The ethanol extract, considerably enhanced it in nymphs but significantly prohibited it in adults. The petroleum ether extract exhibited an enhancing effect on the enzyme activity in haemolymph of nymphs and adults with few exceptions. GPT activity was elaborately induced or pronouncedly inhibited in fat bodies of nymphs, depending on the age and extract. In fat bodies of adults, GPT level was unexceptionally declined, irrespective of the extract.