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Type: Journal article
Title: Effects of floral thermogenesis on pollen function in Asian skunk cabbage Symplocarpus renifolius
Author: Seymour, R.
Ito, Y.
Onda, Y.
Ito, K.
Citation: Biology Letters, 2009; 5(4):568-570
Publisher: The Royal Society
Issue Date: 2009
ISSN: 1744-9561
Statement of
Roger S. Seymour, Yuka Ito, Yoshihiko Onda and Kikukatsu Ito
Abstract: The effects of temperature on pollen germination and pollen tube growth rate were measured in vitro in thermogenic skunk cabbage, Symplocarpus renifolius Schott ex Tzvelev, and related to floral temperatures in the field. This species has physiologically thermoregulatory spadices that maintain temperatures near 23°C, even in sub-freezing air. Tests at 8, 13, 18, 23, 28 and 33°C showed sharp optima at 23°C for both variables, and practically no development at 8°C. Thermogenesis is therefore a requirement for fertilization in early spring. The narrow temperature tolerance is probably related to a long period of evolution in flowers that thermoregulate within a narrow range.
Keywords: thermogenic; flower; pollen; germination; skunk cabbage; Symplocarpus renifolius
Rights: This journal is © 2009 The Royal Society
RMID: 0020091120
DOI: 10.1098/rsbl.2009.0064
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Appears in Collections:Earth and Environmental Sciences publications

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