Fragrance of Canada Thistle (Cirsium arvense) Attracts Both Floral Herbivores and Pollinators

Theis, Nina

doi:10.1007/s10886-006-9051-x

Cited by 153 publications

(147 citation statements)

References 36 publications

Supporting

Mentioning

139

Contrasting

Unclassified

Order By: Relevance

“…While a growing number of studies have demonstrated that floral display or reward can be costly due to the attraction of antagonists (Brody and Mitchell 1997;Adler and Bronstein 2004;Ashman et al 2004b;Strauss and Irwin 2004), the current study is one of few to address the role of scent in attracting pollinators compared to herbivores. Similar to our study, specific floral volatiles present in C. arvense scent attracted just pollinators, just herbivores, or both pollinators and herbivores (Theis 2006). In addition to having two different corolla shapes, P. viscosum has two distinct scent morphs that attract different types of pollinators depending on the presence of floral antagonists (Galen et al 1987;Galen and Cuba 2001).…”

Section: Discussionsupporting

confidence: 83%

Pollinator and Herbivore Attraction to Cucurbita Floral Volatiles

2007

Self Cite

View full text Add to dashboard Cite

Mutualists and antagonists may place conflicting selection pressures on plant traits. For example, the evolution of floral traits is typically studied in the context of attracting pollinators, but traits may incur fitness costs if they are also attractive to antagonists. Striped cucumber beetles (Acalymma vittatum) feed on cucurbits and are attracted to several volatiles emitted by Cucurbita blossoms. However, the effect of these volatiles on pollinator attraction is unknown. Our goal was to determine whether pollinators were attracted to the same or different floral volatiles as herbivorous cucumber beetles. We tested three volatiles previously found to attract cucumber beetles in a factorial design to determine attraction of squash bees (Peponapis pruinosa), the specialist pollinators of cucurbita species, as well as the specialist herbivore A. vittatum. We found that 1,2,4-trimethoxybenzene was attractive to both the pollinator and the herbivore, indole was attractive only to the herbivore, and (E)-cinnamaldehyde was attractive only to the pollinator. There were no interactions among volatiles on attraction of squash bees or cucumber beetles. Our results suggest that reduced indole emission could benefit plants by reducing herbivore attraction without loss of pollination, and that 1,2,4-trimethoxybenzene might be under conflicting selection pressure from mutualists and antagonists. By examining the attraction of both mutualists and antagonists to Cucurbita floral volatiles, we have demonstrated the potential for some compounds to influence only one type of interaction, while others may affect both interactions and possibly result in tradeoffs. These results shed light on the potential evolution of fragrance in native Cucurbita, and may have consequences for yield in agricultural settings.

show abstract

Section: Discussionsupporting

confidence: 83%

Pollinator and Herbivore Attraction to Cucurbita Floral Volatiles

2007

Self Cite

View full text Add to dashboard Cite

show abstract

“…The production of such a diverse array of compounds is likely to incur energetic (Gershenzon 1994;Wright and Schiestl 2009) and ecological costs, because the same compounds that attract mutualistic insects also may attract antagonistic herbivores and seed predators (Irwin et al 2004;Proffit et al 2007;Schiestl et al 2011;Theis 2006;Theis and Adler 2012;Wright and Schiestl 2009).…”

Section: Introductionmentioning

confidence: 99%

Floral Scent Contributes to Interaction Specificity in Coevolving Plants and Their Insect Pollinators

et al. 2014

View full text Add to dashboard Cite

Chemical defenses, repellents, and attractants are important shapers of species interactions. Chemical attractants could contribute to the divergence of coevolving plant-insect interactions, if pollinators are especially responsive to signals from the local plant species. We experimentally investigated patterns of daily floral scent production in three Lithophragma species (Saxifragaceae) that are geographically isolated and tested how scent divergence affects attraction of their major pollinator-the floral parasitic moth Greya politella (Prodoxidae). These moths oviposit through the corolla while simultaneously pollinating the flower with pollen adhering to the abdomen. The complex and species-specific floral scent profiles were emitted in higher amounts during the day, when these day-flying moths are active. There was minimal divergence found in petal color, which is another potential floral attractant. Female moths responded most strongly to scent from their local host species in olfactometer bioassays, and were more likely to oviposit in, and thereby pollinate, their local host species in no-choice trials. The results suggest that floral scent is an important attractant in this interaction. Local specialization in the pollinator response to a highly specific plant chemistry, thus, has the potential to contribute importantly to patterns of interaction specificity among coevolving plants and highly specialized pollinators.

show abstract

“…However, plants are challenged by constantly changing abiotic and biotic environmental conditions that might affect a plant's capacity to invest in sexual reproduction (Euler and Baldwin, 1996;Carroll et al, 2001;García and Ehrlén, 2002). Besides direct impacts, like floral oviposition (Dufaÿ and Anstett, 2003) or floral herbivory (Leege and Wolfe, 2002;Rö se and Tumlinson, 2004;Theis, 2006;Sanchez-Lafuente, 2007), flowers are mostly exposed to a changing environment as part of an entirely affected plant (Sampson and Cane, 1999;Carroll et al, 2001). One of the most deleterious biotic influences on plants is green leaf herbivory.…”

mentioning

confidence: 99%

Influence of Green Leaf Herbivory by Manduca sexta on Floral Volatile Emission by Nicotiana suaveolens

2008

View full text Add to dashboard Cite

Plants have to cope with various abiotic and biotic impacts as a consequence of changing environments, which can impair their ability to sexually reproduce. The main objective of this study was to investigate whether green leaf herbivory, having one of the most hazardous biotic impacts, would have any direct effect on the production and emission of floral volatiles because volatiles are known to play a crucial role in pollination. Nicotiana suaveolens plants were challenged with Manduca sexta feeding on leaves, and alterations in the quality and quantity of the floral blend, shifts in emission patterns, and changes in expression patterns of the floral benzoic/salicylic acid carboxyl-methyltransferase were monitored in noninfested and infested plants. Leaves responded to larval feeding by herbivory-induced diurnal emission of semiochemicals, whereas the emission of floral volatiles remained unchanged in comparison to the noninfested control. Neither the volatile composition nor the quantity of components or the nocturnal emission patterns was altered. The mRNA and protein levels of the benzoic/salicylic acid carboxylmethyltransferase, as well as its enzyme activity, also did not show any significant differences. These results indicate that metabolism in flowers at and postanthesis is an autonomous process and is independent of metabolic changes in green leaves. By this sustaining mechanism, N. suaveolens plants ensure sexual reproduction even under unfavorable conditions.

show abstract

Fragrance of Canada Thistle (Cirsium arvense) Attracts Both Floral Herbivores and Pollinators

Cited by 153 publications

References 36 publications

Pollinator and Herbivore Attraction to Cucurbita Floral Volatiles

Pollinator and Herbivore Attraction to Cucurbita Floral Volatiles

Floral Scent Contributes to Interaction Specificity in Coevolving Plants and Their Insect Pollinators

Influence of Green Leaf Herbivory by Manduca sexta on Floral Volatile Emission by Nicotiana suaveolens

Contact Info

Product

Resources

About