1996
DOI: 10.2307/2265745
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A Plant Pathogen Influences Pollinator Behavior and May Influence Reproduction of Nonhosts

Abstract: Some plant pathogens attract pollinating insects and thus have the potential to influence the pollination of flowers, just as different flower species can influence one another's pollination. Showy, flower-like pseudoflowers caused by the rust fungus Puccinia monoica on Arabis holboellii (Brassicaceae) commonly co-occur with flowers of Anemone patens (Ranunculaceae). I evaluated the effects of pseudoflowers and anemone on each other's visitation, and the effect of pseudoflowers on the seed set of anemone. I ex… Show more

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Cited by 44 publications
(34 citation statements)
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“…found on inflorescences of A. integer may also be more or less generalist parasites on plant reproductive organs. While some plant diseases are transmitted by pollinators of their host plants (Alexander, 1987(Alexander, , 1990Roy, 1994), we could not find fungal spores from limited samples examined by scanning electron microscope. The spores may be predominantly dispersed by wind as those of many Mucolares are thought to be.…”
Section: Discussionmentioning
confidence: 70%
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“…found on inflorescences of A. integer may also be more or less generalist parasites on plant reproductive organs. While some plant diseases are transmitted by pollinators of their host plants (Alexander, 1987(Alexander, , 1990Roy, 1994), we could not find fungal spores from limited samples examined by scanning electron microscope. The spores may be predominantly dispersed by wind as those of many Mucolares are thought to be.…”
Section: Discussionmentioning
confidence: 70%
“…9). Several other pathogenic fungi have interactions with pollinators (Batra and Batra, 1985;Alexander, 1987Alexander, , 1990Roy, 1994). In Moraceae, for example, the pathogen Fusarium, transmitted by the fig wasp and causing endosepsis (endo, inner; sepsis, rotting) of figs, is known to damage cultivated figs (Carter, 1973).…”
Section: Discussionmentioning
confidence: 99%
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“…Highdensity plots including pseudoflowers of Arabis sp. have been found to receive more insect visitors than low-density plots (Roy 1996).…”
Section: Discussion (A) Pathogen-induced Host Changesmentioning
confidence: 92%
“…In patches with high density of flowers, the availability of resources is high (i.e., nectar) whereas the distance between flowers is short. In contrast, in patches with low density of flowers, the amount of resources is low and the distance between flowers is high, which increases the cost of forage for pollinators (Roy 1996). Therefore, patches with high density of flowers would be more frequently visited by pollinators, and hence achieving a higher reproductive success.…”
Section: Introductionmentioning
confidence: 99%