Taraxacum officinale pollen depresses seed set of montane wildflowers through pollen allelopathy
DOI:
https://doi.org/10.26786/1920-7603(2014)13Abstract
Plant species that share pollinators can suffer from interspecific pollen deposition. Male reproductive success is inevitably reduced by the loss of pollen to flowers of another species. Female reproductive success can be affected by reduced stigmatic area or, more strongly, through allelopathic effects by which the admixture of some foreign pollen reduces seed or fruit set. We tested for allelopathic effects of Taraxacum officinale (Asteracaeae) pollen on the seed set of montane wildflowers Erythronium grandiflorum (Liliaceae) and Erysimum capitatum (Brassicaceae), by hand-pollinating plants with pollen mixtures. Taraxacum is a common invasive species, which produces allelopathic chemicals in its root and vegetative tissue, making it a likely candidate for pollen allelopathy. Flowers of both species produced fewer well-developed seeds when pollinated with pollen mixtures containing Taraxacum pollen. The pollen-allelopathic potential of weedy dandelion may add to its ability to disrupt communities that it invades.
References
Chittka L, Thomson JD, Waser NM (1999) Flower constancy, insect psychology, and plant evolution. Naturwissenschaften 86:361-377. DOI: https://doi.org/10.1007/s001140050636
Forrest J, Inouye DW, Thomson JD (2010) Flowering phenology in subalpine meadows: Does climate variation influence community co-flowering patterns? Ecology 91:431-440. DOI: https://doi.org/10.1890/09-0099.1
Gegear RJ, Laverty TM (2005) Flower constancy in bumblebees: a test of the trait variability hypothesis. Animal Behaviour 69:939-949. DOI: https://doi.org/10.1016/j.anbehav.2004.06.029
Holm L, Doll L, Holm E, Pacheco J, Herberger J (1997) World weeds: natural histories and distributions. Wiley, New York.
Inouye DW (2008) Effects of climate change on phenology, frost damage and floral abundance of montane wildflowers. Ecology 89:353- 362. DOI: https://doi.org/10.1890/06-2128.1
Inderjit TR, Seastedt, RM, Callaway JL, Pollock JK (2008) Allelopathy and plant invasions: traditional, congeneric, and bio-geographical approaches. Biological Invasions 10:875-890. DOI: https://doi.org/10.1007/s10530-008-9239-9
Jankowska J, Ciepiela GA, Sosnowski J, Kolczarek R, Jankowski K (2009) The allelopthatic effect of Taraxacum officinale F.G. Wiff on the seeds germination and initial growth. Acta Agrobotanica 62:207-212. DOI: https://doi.org/10.5586/aa.2009.043
Jones K (2004) Do dandelion flowers influence seed set of a native plant (Delphinium nuttallianum) in subalpine meadows? American Midland Naturalist 151:201-205. DOI: https://doi.org/10.1674/0003-0031(2004)151[0201:DDFISS]2.0.CO;2
Kanchan S, Jayachandra (1980) Pollen allelopathy--A new phenomenon. New Phytologist 84:739-746. DOI: https://doi.org/10.1111/j.1469-8137.1980.tb04786.x
Kearns CA, Inouye DW (1993) Techniques for pollination biologists. University Press of Colorado, Niwot, Colorado, USA.
Koltunow AM, Johnson SD, Okada T (2011) Apomixis in hawkweed: Mendel’s experimental nemesis. Journal of Experimental Botany 62:1699-1707. DOI: https://doi.org/10.1093/jxb/err011
Levin DA, Anderson WW (1970) Competition for pollinators between simultaneously flowering species. American Naturalist 104:455-467. DOI: https://doi.org/10.1086/282680
Mitchell RJ, Flanagan RJ, Brown BJ, Waser NM, Karron JD (2009) New frontiers in competition for pollination. Annals of Botany 103:1403-1414. DOI: https://doi.org/10.1093/aob/mcp062
Morales CL, Traveset A (2008) Interspecific pollen transfer: magnitude, prevalence and consequences for plant fitness. Critical Reviews in Plant Sciences 27:221-238. DOI: https://doi.org/10.1080/07352680802205631
Murphy SD, Aarssen LW (1995) Allelopathic pollen extract from Phleum pratens L. (Poaceae) reduces germination, in vitro of pollen of sympatric species. International Journal of Plant Science 156:425-434. DOI: https://doi.org/10.1086/297264
Murphy SD (2000) Field testing for pollen allelopathy: a review. Journal of Chemical Ecology 26:2155-2172. DOI: https://doi.org/10.1023/A:1005572516948
Powers L, Rollins RC (1945) Reproductive and pollination studies on guayule (Parthenium argentatum Gray and P. incanum H.B.K.) Journal of the American Society of Agronomy 37:96-112. DOI: https://doi.org/10.2134/agronj1945.00021962003700020003x
R Core Team (2013) R: A language and environment for statistical computing. R Foundation for Statistical Computing, Vienna, Austria. http://www.R-project.org/.
Rathcke B (1983) Competition and facilitation among plants for pollination. In: Real L (ed). Pollination Biology. Academic Press, New York, pp 305-329. DOI: https://doi.org/10.1016/B978-0-12-583980-8.50019-3
Richards AJ (1973) The origin of Taraxacum agamospecies. Botanical Journal of the Linnean Society 66:189-211. DOI: https://doi.org/10.1111/j.1095-8339.1973.tb02169.x
Thomson JD (2010) Flowering phenology, fruiting success and progressive deterioration of pollination in an early-flowering geophyte. Philosophical Transactions of the Royal Society B 365:3187-3199. DOI: https://doi.org/10.1098/rstb.2010.0115
Thomson JD, Andrews BJ, Plowright RC (1981) The effect of a foreign pollen on ovule development in Diervilla lonicera (Caprifoliaceae). New Phytologist 90:777-783. DOI: https://doi.org/10.1111/j.1469-8137.1982.tb03286.x
Thomson JD, Forrest JRK, Ogilvie JE (2011) Pollinator exclusion devices permitting easy access to flowers. Journal of Pollination Ecology 4:24-25. DOI: https://doi.org/10.26786/1920-7603(2011)11
Walther GR, Roques A, Hulme PE, Sykes MT, Pysek P, Kuhn I, Zobel M, Bacher S, Botta-Dukat Z, Bugmann H, Czucz B, Dauber J, Hickler T, Jarosik V, Kenis M, Klotz S, Minchin D, Moora M, Nentwig W, Ott J, Panov VE, Reineking B, Robinet C, Semenchenko V, Solarz W, Thuiller W, Vila M, Vohland K, Settele J (2009) Alien species in a warmer world: risks and opportunities. Trends in Ecology & Evolution 24:686-693. DOI: https://doi.org/10.1016/j.tree.2009.06.008
Waser NM (1978) Competition for hummingbird pollination and sequential flowering in two Colorado wildflowers. Ecology 59: 934-944. DOI: https://doi.org/10.2307/1938545
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Copyright (c) 2014 Deirdre Loughnan, James D. Thomson, Jane E. Ogilvie, Benjamin Gilbert
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