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Part of the book series: NATO ASI Series ((NSSA,volume 287))

Abstract

Light signal transduction in plants is mediated by the concerted interaction of UV-B, blue/UV-A, and red-light photoreceptors. The physiological effects of the activation of these photoreceptors are dramatically illustrated by comparing the morphologies of dark grown seedlings to those exposed to ambient light (Fig. 1). Dark-grown (etiolated) seedlings are typically white in color, have elongated stems, and lack leaves and flowers. Exposure to light induces photomorphogenesis, which is characterized by a rapid inhibition of stem elongation and the development of leaves and photo synthetically competent chloroplasts, which results in greening (de-etiolation).

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© 1996 Plenum Press, New York

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Sommer, D., Song, PS. (1996). Light Signal Transduction Mediated by Phytochromes. In: Jennings, R.C., Zucchelli, G., Ghetti, F., Colombetti, G. (eds) Light as an Energy Source and Information Carrier in Plant Physiology. NATO ASI Series, vol 287. Springer, Boston, MA. https://doi.org/10.1007/978-1-4613-0409-8_16

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  • DOI: https://doi.org/10.1007/978-1-4613-0409-8_16

  • Publisher Name: Springer, Boston, MA

  • Print ISBN: 978-1-4613-8039-9

  • Online ISBN: 978-1-4613-0409-8

  • eBook Packages: Springer Book Archive

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