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J Chem Ecol

Title:		"Phenolic biosynthesis, leaf damage, and insect herbivory in birch (Betula pendula)"
Author(s):		Hartley SE; Firn RD;
Address:		"Department of Biology, University of York, Heslington, Y01 5DD, York, England"
Journal Title:		J Chem Ecol
Year:		1989
Volume:		15
Issue:		1
Page Number:		275 - 283
DOI:		10.1007/BF02027789
ISSN/ISBN:		0098-0331 (Print) 0098-0331 (Linking)
Abstract:		"The effect of both caterpillar herbivory and artificial damage on phenylalanine ammonia lysase (PAL) activity of birch foliage was measured, using an intact cell assay. After artificial damage there was a small increase in PAL activity in damaged leaves but no change in adjacent undamaged ones. Insect grazing produced a larger increase in PAL activity, and the enzyme activity was also increased in adjacent undamaged leaves. Artificial damage increased the phenolic levels of the damaged leaves. Insect grazing caused a larger, longer-lasting increase in phenolic levels and also elevated phenolic levels in undamaged leaves. The possible role of these wound-induced biochemical changes in birch is discussed"
Keywords:
Notes:		"PubMed-not-MEDLINEHartley, S E Firn, R D eng 1989/01/01 J Chem Ecol. 1989 Jan; 15(1):275-83. doi: 10.1007/BF02027789"