Do foliar phenolics provide protection to Heliothis virescens from a baculovirus?

M. I. Ali, J. L. Bi, S. Y. Young, Gary Felton

Research output: Contribution to journalArticle

11 Citations (Scopus)

Abstract

The effects of chlorogenic acid on larval survival and growth of the tobacco budworm Heliothis virescens and larval susceptibility to Helicoverpa zea nucleopolyhedrovirus (HzSNPV) were studied with an artificial diet and transgenic tobacco Nicotiana tabacum. Survival of neonates on over- or underexpressed phenylalanine ammonia-lyase (PAL) transgenic tobacco lines was positively correlated with the level of chlorogenic acid. Larval weight was not correlated with the level of chlorogenic acid in tobacco foliage. On the other hand, larval weights on artificial diet supplemented with chlorogenic acid were negatively correlated with chlorogenic acid concentration. Second instars treated on virus-treated (10 occlusion bodies/larva) tobacco leaf disks for 24 hr and then reared on tobacco leaves showed higher survival time and increased mortality on lines with increasing levels of chlorogenic acid. However, viralrelated larval mortality on artificial diet was negatively correlated with dietary chlorogenic acid. These results illustrate the inadequacy of artificial diet studies in establishing causal relationships among plant chemistry, herbivores, and natural enemies.

Original languageEnglish (US)
Pages (from-to)2193-2204
Number of pages12
JournalJournal of Chemical Ecology
Volume25
Issue number9
DOIs
StatePublished - Jan 1 1999

Fingerprint

Chlorogenic Acid
Heliothis virescens
Baculoviridae
chlorogenic acid
Tobacco
tobacco
artificial diet
artificial diets
Nutrition
acid
Diet
Helicoverpa zea single nucleopolyhedrovirus
genetically modified organisms
Phenylalanine Ammonia-Lyase
phytochemistry
Nucleopolyhedrovirus
Weights and Measures
leaves
mortality
Herbivory

All Science Journal Classification (ASJC) codes

  • Ecology, Evolution, Behavior and Systematics
  • Biochemistry

Cite this

Ali, M. I. ; Bi, J. L. ; Young, S. Y. ; Felton, Gary. / Do foliar phenolics provide protection to Heliothis virescens from a baculovirus?. In: Journal of Chemical Ecology. 1999 ; Vol. 25, No. 9. pp. 2193-2204.
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Do foliar phenolics provide protection to Heliothis virescens from a baculovirus? / Ali, M. I.; Bi, J. L.; Young, S. Y.; Felton, Gary.

In: Journal of Chemical Ecology, Vol. 25, No. 9, 01.01.1999, p. 2193-2204.

Research output: Contribution to journalArticle

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