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Pigmentation and Soluble Peroxidase Isozyme Patterns of Leaves of Pedilanthus tithymaloides L. Variegatus as a Result of Daily Temperature Differences
Vol. 69, No. 3 (Mar., 1982), pp. 668-671
Published by: American Society of Plant Biologists (ASPB)
Stable URL: http://www.jstor.org/stable/4267272
Page Count: 4
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In a constant environment with a narrow (less than 8°C) daily temperature difference (δt), leaves of Pedilanthus tithymaloides L. variegatus usually appeared green. After at least two days of δt > 10°C, new leaves had become green-white, and a red pigmentation appeared and increased if high δt conditions were maintained. If plants were returned to a narrow δt, new green leaves reappeared. Electrophoretic patterns of soluble peroxidase isozymes changed during the color changes. Three groups of electrophoretic bands occurred, and each was related to a characteristic tissue. The development of red color was correlated with the appearance of the group with the fastest electrophoretic mobility and the highest peroxidase activity.
Plant Physiology © 1982 American Society of Plant Biologists (ASPB)