Pigment dynamics and autumn leaf senescence in a New England deciduous forest, eastern USA

Ecological Research - Tập 18 Số 6 - Trang 677-694 - 2003
David W. Lee1,2, John O’Keefe3, N. Michèle Holbrook4, Taylor S. Feild5
1Department of Biological Sciences, Florida International University, Miami, Florida 33199 USA
2Fairchild Tropical Garden, Miami, Florida 33156, USA,
3Harvard Forest, Petersham, Massachusetts 01366, USA,
4Department of Organismic and Evolutionary Biology, Harvard University, Cambridge, Massachusetts 02138, USA and
5Department of Botany, University of Toronto, Toronto M5S 3B2, Canada

Tóm tắt

The leaves of woody plants at Harvard Forest in Central Massachusetts, USA, changed color during senescence; 70% (62/89) of the woody species examined anatomically contained anthocyanins during senescence. Anthocyanins were not present in summer green leaves, and appeared primarily in the vacuoles of palisade parenchyma cells. Yellow coloration was a result of the unmasking of xanthophyll pigments in senescing chloroplasts. In nine red‐senescing species, anthocyanins were not detectable in mature leaves, and were synthesized de novo in senescence, with less than 20 µg cm−2 of chlorophyll remaining. Xanthophyll concentrations declined in relation to chlorophyll to the same extent in both yellow‐ and red‐leaved taxa. Declines in the maximum photosystem II quantum yield of leaves collected prior to dawn were only slightly less in the red‐senescing species, indicating no long‐term protective activity. Red‐leaved species had significantly greater mass/area and lower chlorophyll a/b ratios during senescence. Nitrogen tissue concentrations in mature and senescent leaves negatively correlated to anthocyanin concentrations in senescent leaves, weak evidence for more efficient nitrogen resorption in anthocyanic species. Shading retarded both chlorophyll loss and anthocyanin production in Cornus alternifolia, Acer rubrum, Acer saccharum, Quercus rubra and Viburnum alnifolium. It promoted chlorophyll loss in yellow‐senescing Fagus grandifolia. A reduced red : far‐red ratio did not affect this process. Anthocyanins did not increase leaf temperatures in Q. rubra and Vaccinium corymbosum on cold and sunny days. The timing of leaf‐fall was remarkably constant from year to year, and the order of senescence of individual species was consistent.

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Tài liệu tham khảo

10.1104/pp.92.4.1184

10.2307/2261481

10.1105/tpc.10.7.1135

10.1006/jtbi.2000.2089

Björkman O., 1981, Physiological Plant Ecology 1, Encyclopedia of Plant Physiology, 57

Bremner J. M., 1996, Methods of Soil Analysis, Part 3, 1085

10.1111/j.1751-1097.1999.tb01944.x

Chang K. G., 1989, Anthocyanins  in  autumn leaves  of quaking aspen in Colorado, Forest Science, 35, 229

10.1890/0012-9658(2000)081[2314:LTIOAO]2.0.CO;2

10.2307/2996991

10.1104/pp.010063

10.1038/323763a0

10.1111/j.1365-2621.1968.tb00887.x

10.1104/pp.113.2.313

10.1042/bj0680503

10.1038/378241b0

Gould K. S., 2002, Anthocyanins and Leaves

10.1046/j.1365-3040.2002.00905.x

10.1086/337760

10.1098/rspb.2001.1672

10.1093/treephys/21.1.1

10.1016/S1360-1385(98)01248-5

10.1016/S0031-9422(00)88535-0

10.2307/2265777

King J., 1997, Reaching for the Sun, How Plants Work

10.1093/treephys/7.1-2-3-4.21

10.1016/B978-012424162-6/50017-X

10.1139/b95-122

10.1016/S0065-2296(02)37048-4

10.2307/2265631

10.1002/j.1537-2197.1990.tb13566.x

10.2307/2388458

10.1086/321926

10.1007/978-3-662-02384-6

10.1146/annurev.arplant.50.1.67

10.1080/07352689609382369

10.1104/pp.97.1.343

10.2136/sssabookser5.3.c34

10.1111/j.1399-3054.1996.tb00463.x

10.1007/BF00238420

10.1139/b92-280

10.1111/j.1399-3054.1996.tb00205.x

10.2307/1933816

Sharma V., 1981, Enhancement of Hill activity by anthocyanins under both ‘white incandescent’ and green irradiation (Rosa damascena and Euphorbia pulcherrima), Photosynthetica, 15, 540

10.2307/1940887

10.1111/j.1469-8137.1994.tb04243.x

Smith A. M., 1909, On the internal temperature of leaves in tropical insolation, with special reference to the effect of their colour on temperature: also observations on the periodicity of the appearance of young coloured leaves growing in the Peradeniya Gardens, Annals of the Royal Botanical Garden, Peradeniya, 4, 229

10.4319/lo.1980.25.4.0754

10.2307/1948491

Steponkus P. L., 1969, The relationship of anthocyanin content to cold hardiness of Hedera helix, Hortscience, 4, 55, 10.21273/HORTSCI.4.1.55

10.1086/284007

Taiz L., 1998, Plant Physiology

10.1046/j.1469-8137.1997.00737.x

10.1021/jf00047a009

10.1016/S0176-1617(11)81192-2

Wheldale M., 1916, The Anthocyanin Pigments of Plants

10.2307/2438838

10.1016/S1360-1385(97)82730-6

10.1006/abbi.1996.0331

Zhu H., 1995, Changes in the content of chlorophyll and redox components of the thylakoid membrane during development and senescence of beech (Fagus sylvatica) leaves, Zeitschrift für Naturforschungen, 50, 69, 10.1515/znc-1995-1-211

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Ecological Research

Tập 18 Số 6

677-694

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