Co-Authors:
Rafaeli, A., Department of Entomology, Faculty of Agriculture. The Hebrew University, Rehovot, Israel
Applebaum, S.W., Department of Entomology, Faculty of Agriculture. The Hebrew University, Rehovot, Israel
Abstract:
In vivo increase in haemolymph volume of canavanine-treated locusts substantiates our previous in vitro findings that canavanine inhibits fluid secretion by locust Malpighian tubules. Furthermore when diuretic hormone is applied in vivo after canavanine treatment haemolymph volume is drastically reduced below levels retained in locusts untreated with canavanine. Again this is in accord with canavanine potentiation of semi-isolated Malpighian tubules and enhanced fluid secretion in vitro. The response is specific to canavanine; compounds similar in structure (arginine, argininic acid, citrulline, canaline, ornithine and homoserine) have no effect on the rate of fluid secreted by Malpighian tubules. Only partial competition is obtained with uridine homoserine. © 1982.
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