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J Chem Ecol

Title:		Alkaloidal responses to damage inNicotiana native to North America
Author(s):		Baldwin IT; Ohnmeiss TE;
Address:		"Department of Biological Sciences, SUNY at Buffalo, 14260-1300, Buffalo, New York"
Journal Title:		J Chem Ecol
Year:		1993
Volume:		19
Issue:		6
Page Number:		1143 - 1153
DOI:		10.1007/BF00987376
ISSN/ISBN:		0098-0331 (Print) 0098-0331 (Linking)
Abstract:		"We performed field tests of alkaloid induction inNicotiana attenuata plants growing in southwestern Utah with mimicry of the two major types of damage inflicted by invertebrate and vertebrate herbivores: leaf damage and stalk removal, respectively. In undamaged plants, seasonal increases in leaf nicotine content occurred at a rate of 0.046% leaf dry mass/day. Leaf damage doubled the accumulation rate to 0.086-0.138% leaf dry mass/day, while stalk removal resulted in a quadrupling of the accumulation rate to 0.206% leaf dry mass/day. These damage-induced increases in nicotine accumulation are significantly larger than between-plant and phenological variations. Leaf damage to the nornicotine-(N. repanda andN. trigonophylla) and anabasine-accumulating (N. glauca)Nicotiana species native to North America resulted in 1.5- to 5-fold increases in their principal leaf alkaloid pools. We conclude that alkaloid induction is not limited to nicotine-accumulatingNicotiana species and that herbivores feeding on previously damaged plants are likely to encounter tissues with alkaloid titers significantly higher than those of undamaged plants"
Keywords:
Notes:		"PubMed-not-MEDLINEBaldwin, I T Ohnmeiss, T E eng 1993/06/01 J Chem Ecol. 1993 Jun; 19(6):1143-53. doi: 10.1007/BF00987376"