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Seedling growth and leaf surface morphological responses of three rangeland weeds to ultraviolet-B radiation

Published online by Cambridge University Press:  12 June 2017

Nancy H. Furness ,
Mahesh K. Upadhyaya  and
Douglas P. Ormrod
Nancy H. Furness
Affiliation:
Department of Plant Science, University of British Columbia, Vancouver, B.C., Canada V6T 1Z4
Douglas P. Ormrod
Affiliation:
Department of Biology, University of Victoria, Victoria, B.C., Canada V8W 3N5
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Abstract

The influence of ultraviolet-B (UV-B) radiation on seedling growth and leaf surface characteristics of important rangeland weeds Cynoglossum officinale L. (houndstongue), Centaurea diffusa Lam. (diffuse knapweed), and Tragopogon pratensis L. (meadow salsify) was investigated in a greenhouse by exposing seedlings to 0, 7, or 11 kJ m−2 d−1 of biologically effective UV-B radiation. UV-B radiation reduced leaf, stem, and root fresh weights, leaf area, and leaf: shoot ratio and increased shoot dry matter content, specific leaf weight, and leaf greenness of C. officinale seedlings. Leaf, stem, and root fresh weight, and leaf area of C. diffusa seedlings decreased, whereas shoot dry matter content, specific leaf weight, leaf: shoot ratio, and leaf greenness were unaffected. T. pratensis seedlings exposed to UV-B radiation had diminished leaf greenness, but no change was observed in leaf or stem fresh weight, leaf area, or leaf: shoot ratio. Uniseriate trichome abundance in C. officinale seedlings increased and trichome orientation changed in response to UV-B exposure. UV-B treatments decreased uniseriate trichome abundance in C. diffusa; glandular trichome abundance and the ratio of glandular: uniseriate trichomes were not affected. T. pratensis seedlings showed no change in the amount of epicuticular wax on the adaxial leaf surface in response to UV-B irradiation. Shoot dry weight was not influenced by removal of epicuticular wax prior to UV-B exposure. Results suggest that epicuticular wax is not an important factor in acclimation of T. pratensis seedlings to UV-B radiation. Susceptibility to UV-B–induced damage was greatest for C. officinale seedlings and least for T. pratensis seedlings. Modification of plant morphology or reduction in growth induced by enhanced UV-B radiation may influence competitive relationships between rangeland weeds and their associated forage species.

Keywords

Centaurea diffusa Lam. CENDI, diffuse knapweedCynoglossum officinale L. CYWOF, houndstongueTragopogon pratensis L. TROPR, meadow salsifyEpicuticular waxtrichomesscanning electron microscopyCENDICYWOFTROPR
Type
Weed Biology and Ecology
Information
Weed Science , Volume 47 , Issue 4 , August 1999 , pp. 427 - 434
Copyright
Copyright © 1999 by the Weed Science Society of America 

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References

Literature Cited

Barnes, P. W., Jordan, P. W., Gold, W. G., Flint, S. D., and Caldwell, M. M. 1988. Competition, morphology and canopy structure in wheat (Triticum aestivum L.) and wild oat (Avena fatua L.) exposed to enhanced ultraviolet-B radiation. Funct. Ecol. 2:319–330.CrossRefGoogle Scholar
Caldwell, M. M. 1971. Solar UV irradiation and the growth and development of higher plants. Pages 131–177 in Giese, A. C., ed. Photobiology. Volume 6. New York: Academic Press.Google Scholar
Cline, M. G. and Salisbury, F. B. 1966. Effects of ultraviolet radiation on the leaves of higher plants. Radiat. Bot. 6:151–166.CrossRefGoogle Scholar
Day, T. A. and Vogelmann, T. C. 1995. Alterations in photosynthesis and pigment distributions in pea leaves following UV-B exposure. Physiol. Plant. 94:433–440.CrossRefGoogle Scholar
Ehleringer, J. 1984. Ecology and ecophysiology of leaf pubescence in North American desert plants. Pages 113–132 in Rodriguez, E., Healey, P. L., and Mehta, I., eds. Biology and Chemistry of Plant Trichomes. New York: Plenum Press.CrossRefGoogle Scholar
Ehleringer, J. R. and Mooney, H. A. 1978. Leaf hairs: effects on physiological activity and adaptive value to a desert shrub. Oecologia 37:183–200.CrossRefGoogle ScholarPubMed
Fox, F. M. and Caldwell, M. M. 1978. Competitive interaction in plant populations exposed to supplementary ultraviolet-B radiation. Oecologia 36:173–190.CrossRefGoogle ScholarPubMed
Gallun, R. L., Ruppel, R., and Everson, E. H. 1966. Resistance of small grains to the cereal leaf beetle. J. Econ. Entomol. 59:827–829.CrossRefGoogle Scholar
Greenberg, B. M., Wilson, M. I., Huang, X-D., Duxbury, C. L., Gerhardt, K. E., and Gensemer, R. W., 1997. The effects of ultraviolet-B radiation on higher plants. Pages 1–35 in Wang, W., Gorsuch, J., and Hughes, J. S., eds. Plants for Environmental Studies. Boca Raton, FL: CRC Press.Google Scholar
Hadley, N. F. 1989. Lipid water barriers in biological systems. Prog. Lipid Res. 28:1–5.CrossRefGoogle ScholarPubMed
Harrington, D. F. and Clark, C. 1989. Reduction in light reflectance of leaves of Encelia densifolia (Asteraceae) by trichome wetting. Madrono 36:180–186.Google Scholar
Jefferson, P. G., Johnson, D. A., and Asay, K. H. 1989. Epicuticular wax production, water status, and leaf temperature in Triticeae range grasses of contrasting visible glaucousness. Can. J. Plant Sci. 69:513–519.CrossRefGoogle Scholar
Johnson, H. B. 1975. Plant pubescence: an ecological perspective. Bot. Rev. 41:233–258.CrossRefGoogle Scholar
Jolliffe, P. A. and Ehret, D. L. 1985. Growth of bean plants at elevated carbon dioxide concentrations. Can. J. Bot. 63:2021–2025.CrossRefGoogle Scholar
Karabourniotis, G. and Fasseas, C. 1996. The dense indumentum with its polyphenol content may replace the protective role of the epidermis in some young xeromorphic leaves. Can. J. Bot. 74:347–351.CrossRefGoogle Scholar
Karabourniotis, G., Kotsabassidis, D., and Manetas, Y. 1995. Trichome density and its protective potential against ultraviolet-B radiation damage during leaf development. Can. J. Bot. 73:376–383.CrossRefGoogle Scholar
Karabourniotis, G., Papadopoulos, K., Papamarkou, M., and Manetas, Y. 1992. Ultraviolet-B radiation absorbing capacity of leaf hairs. Physiol. Plant. 86:414–418.CrossRefGoogle Scholar
Landry, L, Stapleton, G. A. E., Lim, J., Hoffman, P., Hays, J. B., Walbot, V., and Last, R. L. 1997. An Arabidopsis photolyase mutant is hypersensitive to ultraviolet-B radiation. Proc. Natl. Acad. Sci. USA 94:328–332.CrossRefGoogle ScholarPubMed
Levin, D. A. 1973. The role of trichomes in plant defense. Q. Rev. Biol. 48:3–15.CrossRefGoogle Scholar
Madronich, S., McKenzie, R. L., Caldwell, M. M., and Björn, L. O. 1995. Changes in ultraviolet radiation reaching the earth's surface. AMBIO 24:143–152.Google Scholar
Mulroy, T. W. 1979. Spectral properties of heavily glaucous and non-glaucous leaves of a succulent rosette-plant. Oecologia 38:349–357.CrossRefGoogle ScholarPubMed
Murphy, T. M. 1983. Membranes as targets of ultraviolet radiation. Physiol. Plant. 58:381–388.CrossRefGoogle Scholar
Ormrod, D. P., Schmidt, A-M., and Livingston, N. J. 1997. Effect of UV-B radiation on the shoot dry matter production and stable carbon isotope composition of two Arabidopsis thaliana genotypes. Physiol. Plant. 101:497–502.CrossRefGoogle Scholar
Radford, A. E., Dickison, W. C., Massey, J. R., and Bell, C. R. 1974. Vascular Plant Systematics. New York: Harper and Row.Google Scholar
Silcox, D. and Holloway, P. J. 1986. A simple method for the removal and assessment of foliar deposits of agrochemicals using cellulose acetate film stripping. Aspects Appl. Biol. 11:13–17.Google Scholar
Skaltsa, H., Verykokidou, E., Harvala, C., Karabourniotis, G., and Manetas, Y. 1994. UV-B protective potential and flavonoid content of leaf hairs of Quercus ilex . Phytochem. 37:987–990.CrossRefGoogle Scholar
Steinmuller, D. and Tevini, M. 1986. UV-B–induced effects upon cuticular waxes of cucumber, bean, and barley leaves. Pages 261–269 in Worrest, R. C. and Caldwell, M. M., eds. Stratospheric Ozone Reduction, Solar Ultraviolet Radiation and Plant Life. Heidelberg: Springer-Verlag.CrossRefGoogle Scholar
Strid, A., Chow, W. S., and Anderson, J. M. 1994. UV-B damage and protection at the molecular level in plants. Photosynth. Res. 39:475–489.CrossRefGoogle ScholarPubMed
Tenga, A. Z., Marie, B. A., and Ormrod, D. P. 1989. Leaf greenness meter to assess ozone injury to tomato leaves. HortScience 24:514.CrossRefGoogle Scholar
Teramura, A. H. and Sullivan, J. H. 1994. Effects of UV-B radiation on photosynthesis and growth of terrestrial plants. Photosynth. Res. 39:463–473.CrossRefGoogle ScholarPubMed
Upadhyaya, M. K. and Furness, N. H. 1994. Influence of light intensity and water stress on leaf surface characteristics of Cynoglossum officinale, Centaurea spp., and Tragopogon spp. Can. J. Bot. 72:1379–1386.CrossRefGoogle Scholar
Upadhyaya, M. K., Qi, M. Q., Furness, N. H., and Cranston, R. 1993. Meadow salsify and western salsify—two rangeland weeds of British Columbia. Rangelands 15:148–150.Google Scholar
Upadhyaya, M. K., Tilsner, H. R., and Pitt, M. D. 1988. The biology of Canadian weeds. 87. Cynoglossum officinale L. Can. J. Plant Sci. 68:763–774.Google Scholar
Watson, A. K. and Renney, A. J. 1974. The biology of Canadian weeds. 6. Centaurea diffusa and C. maculosa . Can. J. Plant Sci. 54:687–701.CrossRefGoogle Scholar