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REFERENCES

Alexieva V, Sergiev I, Mapelli S, Karanov E. 2001. The effect of drought and ultraviolet radiation on growth and stress markers in pea and wheat. Plant, Cell & Environment 24: 1337-1344.

Archetti M. 2000. The origin of autumn colors by coevolution. J Theor Biol 205: 625-630.

Archetti M, Leather SR. 2005. A test of the coevolution theory of autumn colours: colour preference of Rhopalosiphum padi on Prunus padus. Oikos 110: 339-343.

Chalker-Scott L. 1999. Environmental significance of anthocyanins in plant stress responses. Photochemistry and Photobiology 70: 1-9.

Christie PJ, Alfenito MR, Walbot V. 1994. Enhancement of transcript abundance and anthocyanin pigmentation in maize seedlings. Planta 194: 541-549.

Hagen SB, Debeausse S, Yoccoz NG, Folstad I. 2003. Autumn coloration as a signal of tree condition. Proceddings of the Royal Society, Biological Sciences 271: S184-185

Hamilton WD, Brown SP. 2001. Autumn tree colors as a handicap signal. Proceedings, Biological Sciences 268: 1489-1493.

Hoch WA, Zeldin EL, McCown BH. 2001. Physiological significance of anthocyanins during autumnal leaf senescence. Tree Physiology 21:1-8.

Kozlowski, T.T. and S.G. Pallardy. 1997. Physiology of woody plants. 2nd Edn. Academic Press, San Diego, 411 p

Lee DW, O'Keefe J, Holbrook NM, Feild TS. 2003. Pigment dynamics and autumn leaf senescence in a New England deciduous forest, eastern USA. Ecological Research 18: 677-694.

Matile P. 2000. Biochemistry of Indian summer: physiology of autumnal leaf coloration. Experimental Gerontology 35: 145-158.

Merzlyak MN, Gitelson A. 1995. Why and What for the leaves are yellow in autumn? On the interpretation of optical spectra of senescing leaves (Acer platanoides L.). Journal of Plant Physiolgy 145: 315-320.

Monk LS., Fagerstedt KV, Crawford RMM. 1989. Oxygen toxicity and superoxide dismutase as an antioxidant in physiological stress. Physiologia Plantarum 76: 456-459.

Ougham HJ, Morris P, Thomas H. 2005. The colors of autumn leaves as symptoms of cellular recycling and defenses against environmental stresses. Current Topics in Developmental Biology 66: 135-160.

Sanger JE. 1971. Quantitative investigations of leaf pigments from their inception in buds through autumn coloration to decomposition in falling leaves. Ecology 52: 1075-1089.

Schaberg PG, van den Berg AK, Murakami PF, Shane JB, Donnelly JR. 2003. Factors influencing red expression in autumn foliage of sugar maple. Tree Physiology 23: 325-333.

Online sources/articles:

Dye L. ABCNews. Autumnal foliage can be pretty tree-killers. http://abcnews.go.com/Technology/DyeHard/Story?id=1226045&page=3. October 19, 2005. Accessed March 3, 2008.

Handwerk B. Why do fall leaves change color? http://news.nationalgeographic.com/news/2004/10/1005_041008_fallfoliage.html. October 8, 2004. Accessed March 3, 2008.

Palm CE Jr. Why leaves change color. http://www.esf.edu/pubprog/brochure/leaves/leaves.htm. Accessed March 3, 2008.

USDA Forst Service. Whay leaves change color. http://www.na.fs.fed.us/Spfo/pubs/misc/leaves/leaves.htm. Accessed March 3, 2008.

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