Pyrrolizidine and Pyridine Monoterpene Alkaloids from Two Castilleja Plant Hosts of the Plume Moth, Platyptilia pica

Roby, Mark R.; Stermitz, Frank R.

doi:10.1021/np50035a016

Cited by 42 publications

(38 citation statements)

References 11 publications

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“…This is probably the case for cocaine found in Eloria noyesi (Lymantriidae) feeding on Erythroxylum coca (Erythroxylaceae) (Blum et al 1981), for hypericin in Chrysolina spp. (Chrysomelidae) feeding on Hypericum perforatum (Hypericaceae) (Duffey and Pasteels 1993) and for the pyridine monoterpene alkaloid rhexifoline found in Platyptilia pica (Pterophoridae) feeding on Castilleja rhexifolia (Orobanchaceae) (Roby and Stermitz 1984). Similarly, Zonocerus elegans (Pyrgomorphidae) and A. caja (Arctiidae) larvae reared on Cannabis sativa (Cannabaceae) excreted most of the cannabinoids unchanged, whereas low amounts were possibly also metabolised .…”

Section: Discussionmentioning

confidence: 99%

Plant chemistry and insect sequestration

2009

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Most plant families are distinguished by characteristic secondary metabolites, which can function as putative defence against herbivores. However, many herbivorous insects of different orders can make use of these plant-synthesised compounds by ingesting and storing them in their body tissue or integument. Such sequestration of putatively unpalatable or toxic metabolites can enhance the insects' own defence against enemies and may also be involved in reproductive behaviour. This review gives a comprehensive overview of all groups of secondary plant metabolites for which sequestration by insect herbivores belonging to different orders has been demonstrated. Sequestered compounds include various aromatic compounds, nitrogen-containing metabolites such as alkaloids, cyanogenic glycosides, glucosinolates and other sulphurcontaining metabolites, and isoprenoids such as cardiac glycosides, cucurbitacins, iridoid glycosides and others. Sequestration of plant compounds has been investigated most in insects feeding or gathering on Apocynaceae s.l. (Apocynoideae, Asclepiaoideae), Aristolochiaceae, Asteraceae, Boraginaceae, Fabaceae and Plantaginaceae, but it also occurs for some gymnosperms and even lichens. In total, more than 250 insect species have been shown to sequester plant metabolites from at least 40 plant families. Sequestration predominates in the Coleoptera and Lepidoptera, but also occurs frequently in the orders Heteroptera, Hymenoptera, Orthoptera and Sternorrhyncha. Patterns of sequestration mechanisms for various compound classes and common or individual features occurring in different insect orders are highlighted. More research is needed to elucidate the specific transport mechanisms and the physiological processes of sequestration in various insect species.

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Section: Discussionmentioning

confidence: 99%

Plant chemistry and insect sequestration

2009

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“…Indian paintbrush experience little leaf herbivory, but have two common seed predators: larvae of the plume moth Amblyptilia (Platyptila) pica Walsingham (Pterophoridae) (Lange 1950, , Roby and Stermitz 1984, Stermitz et al 1986) and larvae of the fly Phytomyza subtenella (Agromyzidae; S. Scheffer, L. S. Adler, and C. Gratton, unpublished data ). Amblyptilia pica is a specialist on Castilleja species, and Phytomyza subtenella is in a clade that feeds largely on parasitic Scrophulariaceae (S. Scheffer, personal communication ).…”

Section: Methodsmentioning

confidence: 99%

Host Effects on Herbivory and Pollination in a Hemiparasitic Plant

Adler¹

2002

Ecology

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The indirect effects of hosts on interactions between parasites and other species are not well understood, and it may be difficult to predict the outcome of host species effects on parasite performance due to the complexity of potential direct and indirect effects. For example, parasitic plants obtain defensive compounds as well as nutrients from their hosts, and thus many attributes of parasitic plants are dependent on the quality of their host species. Here I measure the effect of a lupine host species (Lupinus argenteus) compared to other host species on herbivory, pollination, and female plant fitness in the hemiparasite Indian paintbrush (Castilleja miniata) using a series of field experiments. Association with lupine was determined in the field by assaying Indian paintbrush leaves for lupine alkaloids. I found that Indian paintbrush plants parasitizing lupines experienced reduced herbivory from plume moth larvae, agromyzid fly larvae, and deer, relative to Indian paintbrush plants parasitizing other host species. However, there was no correlation between alkaloid content of inflorescences and plume moth performance. Host species did not affect pollinator preference for Indian paintbrush in the field. Indian paintbrush para-sitizing lupines produced twice as many seeds overall as Indian paintbrush parasitizing other host species. Correlations suggest that this benefit arises both from reduced herbivory and increased nitrogenous resources. The reduction of herbivory in Indian paintbrush plants parasitizing lupines indicates that host species can affect performance of hemiparasites via indirect pathways, and that the larger community of herbivores could alter the impact of a host on its plant parasites.

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“…Indian paintbrush experience little leaf herbivory, but have two common seed predators: larvae of the plume moth Amblyptilia (Platyptila) pica Walsingham (Pterophoridae) (Lange 1950, McCoy and Stermitz 1983, Roby and Stermitz 1984, Stermitz et al 1986) and larvae of the fly Phytomyza subtenella (Agromyzidae; S. Scheffer, L. S. Adler, and C. Gratton, unpublished data). Amblyptilia pica is a specialist on Castilleja species, and Phytomyza subtenella is in a clade that feeds largely on parasitic Scrophulariaceae (S. Scheffer, personal communication).…”

Section: Study Systemmentioning

confidence: 99%

Host Effects on Herbivory and Pollination in a Hemiparasitic Plant

Adler

2002

Ecology

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Abstract. The indirect effects of hosts on interactions between parasites and other species are not well understood, and it may be difficult to predict the outcome of host species effects on parasite performance due to the complexity of potential direct and indirect effects. For example, parasitic plants obtain defensive compounds as well as nutrients from their hosts, and thus many attributes of parasitic plants are dependent on the quality of their host species. Here I measure the effect of a lupine host species (Lupinus argenteus) compared to other host species on herbivory, pollination, and female plant fitness in the hemiparasite Indian paintbrush (Castilleja miniata) using a series of field experiments. Association with lupine was determined in the field by assaying Indian paintbrush leaves for lupine alkaloids. I found that Indian paintbrush plants parasitizing lupines experienced reduced herbivory from plume moth larvae, agromyzid fly larvae, and deer, relative to Indian paintbrush plants parasitizing other host species. However, there was no correlation between alkaloid content of inflorescences and plume moth performance. Host species did not affect pollinator preference for Indian paintbrush in the field. Indian paintbrush parasitizing lupines produced twice as many seeds overall as Indian paintbrush parasitizing other host species. Correlations suggest that this benefit arises both from reduced herbivory and increased nitrogenous resources. The reduction of herbivory in Indian paintbrush plants parasitizing lupines indicates that host species can affect performance of hemiparasites via indirect pathways, and that the larger community of herbivores could alter the impact of a host on its plant parasites.

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Pyrrolizidine and Pyridine Monoterpene Alkaloids from Two Castilleja Plant Hosts of the Plume Moth, Platyptilia pica

Cited by 42 publications

References 11 publications

Plant chemistry and insect sequestration

Plant chemistry and insect sequestration

Host Effects on Herbivory and Pollination in a Hemiparasitic Plant

Host Effects on Herbivory and Pollination in a Hemiparasitic Plant

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