The biomechanics of Cornus canadensis stamens are ideal for catapulting pollen vertically
dc.contributor.author | Whitaker, D. L. | en_US |
dc.contributor.author | Webster, L. A. | en_US |
dc.contributor.author | Edwards, Joan M. | en_US |
dc.date.accessioned | 2010-06-01T22:46:09Z | |
dc.date.available | 2010-06-01T22:46:09Z | |
dc.date.issued | 2007-04 | en_US |
dc.identifier.citation | WHITAKER, D. L.; WEBSTER, L. A.; EDWARDS, J. (2007). "The biomechanics of Cornus canadensis stamens are ideal for catapulting pollen vertically." Functional Ecology 21(2): 219-225. <http://hdl.handle.net/2027.42/75735> | en_US |
dc.identifier.issn | 0269-8463 | en_US |
dc.identifier.issn | 1365-2435 | en_US |
dc.identifier.uri | https://hdl.handle.net/2027.42/75735 | |
dc.description.abstract | 1. Rapid movements in fungi and plants have evolved in different species to facilitate the dispersal of spores and seeds. The mechanisms of action can differ among species, but the effectiveness of these movements has rarely, if ever, been tested. Here we show through a quantitative biomechanical analysis that the stamens of Cornus canadensis L. (bunchberry) are ideal for catapulting pollen vertically at high speeds. 2. We develop a biomechanical model to describe the explosive launch of pollen from the flowers of bunchberry. The model determines the equation of motion for the stamens based only on the morphology and measurements of the parts of the stamens. To measure the motion of the stamens to compare with our model, we analysed individual frames of a video taken at 10 000 fps. 3. The thecae of adjacent stamens dehisce in bud so that the stomia face each other, retaining pollen between neighbouring anthers. As the flowers open, pollen is accelerated vertically as long as the thecae remain in contact. Pollen is released only when the anthers move horizontally and separate. 4. The observed motion of the stamens matches the results from our model through release of the pollen. The model reveals that pollen release (horizontal movement of the anthers) occurs only after the vertical speed is at its maximum. Thus, for this particular catapult mechanism, the morphology of the stamens is optimal for launching light, dry pollen straight upwards at high speed. Pollen launched vertically at high speed both enhances insect pollination by helping to making pollen stick on visiting insects, and also allows for successful wind pollination by propelling pollen into the air column. Seed set by inflorescences in pollinator-exclosure cages further supports the ability of this flower to use wind as a pollination mechanism. Functional Ecology (2007) 21 , 219–225 doi: 10.1111/j.1365-2435.2007.01249.x | en_US |
dc.format.extent | 751933 bytes | |
dc.format.extent | 3109 bytes | |
dc.format.mimetype | application/pdf | |
dc.format.mimetype | text/plain | |
dc.publisher | Blackwell Publishing Ltd | en_US |
dc.rights | © 2007 The Authors. Journal compilation © 2007 British Ecological Society | en_US |
dc.subject.other | Bunchberry | en_US |
dc.subject.other | Dogwood | en_US |
dc.subject.other | Plant Motion | en_US |
dc.subject.other | Pollination | en_US |
dc.title | The biomechanics of Cornus canadensis stamens are ideal for catapulting pollen vertically | en_US |
dc.type | Article | en_US |
dc.subject.hlbsecondlevel | Ecology and Evolutionary Biology | en_US |
dc.subject.hlbtoplevel | Science | en_US |
dc.description.peerreviewed | Peer Reviewed | en_US |
dc.contributor.affiliationum | † Physics Department, University of Michigan, Ann Arbor, MI 48109, and | en_US |
dc.contributor.affiliationother | * Physics Department, Williams College, Williamstown, MA 01267, | en_US |
dc.contributor.affiliationother | § Biology Department, Williams College, Williamstown, MA 01267, USA | en_US |
dc.description.bitstreamurl | http://deepblue.lib.umich.edu/bitstream/2027.42/75735/1/j.1365-2435.2007.01249.x.pdf | |
dc.identifier.doi | 10.1111/j.1365-2435.2007.01249.x | en_US |
dc.identifier.source | Functional Ecology | en_US |
dc.identifier.citedreference | Armbruster, W.S., Edwards, M.E. & Debevec, E.M. ( 1994 ) Floral character displacement generates assemblage structure of Western Australian tiggerplants ( Stylidium ). Ecology 75, 315 – 329. | en_US |
dc.identifier.citedreference | Barrett, S.C.H. & Helenurm, K. ( 1987 ) The reproductive biology of boreal forest herbs. I. Breeding systems and pollination. Canadian Journal of Botany 65, 2036 – 2046. | en_US |
dc.identifier.citedreference | Culley, T.M., Weller, S.G. & Sakai, A.K. ( 2002 ) The evolution of wind pollination in angiosperms. Trends in Ecology & Evolution 17, 361 – 369. | en_US |
dc.identifier.citedreference | Edwards, J. ( 1984 ) Spatial pattern and clone structure of the perennial herb, Aralia nudicaulis L. (Araliaceae). Bulletin of the Torrey Botanical Club 111, 28 – 33. | en_US |
dc.identifier.citedreference | Edwards, J., Whitaker, D., Klionsky, S. & Laskowski, M.J. ( 2005 ) A record-breaking pollen catapult. Nature 435, 164. | en_US |
dc.identifier.citedreference | Fetter, A.L. & Walecka, J.D. ( 1980 ) Theoretical Mechanics of Particles and Continua. McGraw-Hill, Columbus, OH, USA. | en_US |
dc.identifier.citedreference | HultÉn, E. ( 1968 ) Flora of Alaska and Neighboring Territories: A Manual of the Vascular Plants. Stanford University Press, Stanford, CA, USA. | en_US |
dc.identifier.citedreference | Ingold, C.T. ( 1965 ) Spore Liberation. Oxford University Press, London, UK. | en_US |
dc.identifier.citedreference | Johnson, S.D. & Steiner, K.E. ( 2000 ) Generalization versus specialization in plant pollination systems. Trends in Ecology & Evolution 15, 140 – 143. | en_US |
dc.identifier.citedreference | Kelly, D., Ladley, J.J., Robertson, A.W., Edwards, J. & Smith, D.C. ( 1996 ) The birds and the bees. Nature 384, 615. | en_US |
dc.identifier.citedreference | LÁzaro, A. & Traveset, A. ( 2005 ) Spatio-temporal variation in the pollination mode of Buxus balearica (Buxaceae), an ambophilous and selfing species: mainland–island comparison. Ecography 28, 640 – 652. | en_US |
dc.identifier.citedreference | Lovell, J.H. ( 1898 ) The insect-visitors of flowers. Bulletin of the Torrey Botanical Club 25, 382 – 390. | en_US |
dc.identifier.citedreference | Pringle, A., Patek, S.N., Fischer, M., Stolze, J. & Money, N.P. ( 2005 ) The captured launch of a ballistospore. Mycologia 97, 866 – 871. | en_US |
dc.identifier.citedreference | Proctor, M. & Yeo, P. ( 1973 ) The Pollination of Flowers. William Collins, Glasgow, UK. | en_US |
dc.identifier.citedreference | Romero, G.A. & Nelson, C.E. ( 1986 ) Sexual dimorphism in Catasetum orchids: forcible pollen emplacement and male flower competition. Science 232, 1538 – 1540. | en_US |
dc.identifier.citedreference | Simons, P. ( 1992 ) The Action Plant: Movement and Nervous Behaviour in Plants. Blackwell, Oxford, UK. | en_US |
dc.identifier.citedreference | Skotheim, J.M. & Mahadevan, L. ( 2005 ) Physical limits and design principles for plant and fungal movements. Science 308, 1308 – 1310. | en_US |
dc.identifier.citedreference | Taylor, P.E., Card, G., House, J., Dickinson, M.H. & Flagan, R.C. ( 2006 ) High-speed pollen release in the white mulberry tree, Morus alba L. Sexual Plant Reproduction 19, 19 – 24. | en_US |
dc.identifier.citedreference | Waser, N.M., Chittka, L., Price, M.V., Williams, N.M. & Ollerton, J. ( 1996 ) Generalization in pollination systems, and why it matters. Ecology 77, 1043 – 1060. | en_US |
dc.owningcollname | Interdisciplinary and Peer-Reviewed |
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