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The wild plant Fagonia bruguieri was extracted by three organic solvents in the present study. Two concentration levels of methanol extract (7.5% and 3.7%), petroleum ether extract (30.0 % and 15.0%) or n-butanolic extract (30.0% and 15.0%) were applied against the newly moulted penultimate instar nymphs of the desert locust Schistocerca gregaria and their effects were assessed on the acid and alkaline phosphatases (ACP and ALP) in both the haemolymph and fat body of last instar nymphs and newly emerged adults. The haemolymph of both earlyand late-aged nymphs contained remarkably reduced ACP activity while a strong enhancing effect of F. bruguieri was exhibited only in the early-aged nymphs after treatment with the lower concentration level of methanolic extract (Change %: +75.0). Haemolymph of the newly emerged adults appeared with pronouncedly induced ACP activity, irrespective of the solvent or the concentration level. A major inducing effect of F. bruguieri extracts on ACP activity in the fat body in last instar nymphs was significantly or insignificantly observed, with few exceptions. The strongest inducing effect on the enzyme activity in fat body of the newly emerged adults was exhibited by n-butanol extract (Change %: +40.9 at lower concentration level). The F. bruguieri, extracted by all organic solvents, exerted contradictory effects on the ALP activity in haemolymph of the nymphs depending on the age because the earlyand mid-aged nymphs appeared with significantly decreased enzyme activity but induced activity in the late-aged ones. A considerable enhancing effect of F. bruguieri on ALP activity in haemolymph of the newly emerged adults was determined. In respect to the ALP activity in fat body, F. bruguieri extracts prohibited it in the earlyand mid-aged nymphs but stimulated it in the late-aged ones. Also, an enhancing effect on the enzyme activity in fat body of the newly emerged adults was appreciated.

egyptian academic journal of biological sciences. c, physiology and molecular biology/egyptian academic journal of biological sciences. c, physiology and  molecular biology

Efficacy of the wild plant fagonia bruguieri (zygophyllaceae) on acid and alkaline phosphatase activities in the desert locust schistocerca gregaria (orthoptera: acrididae).