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PhotoperiodismThe Biological Calendar$
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Randy J. Nelson, David L. Denlinger, and David E. Somers

Print publication date: 2009

Print ISBN-13: 9780195335903

Published to Oxford Scholarship Online: May 2010

DOI: 10.1093/acprof:oso/9780195335903.001.0001

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Seasonality and Photoperiodism in Fungi

Seasonality and Photoperiodism in Fungi

(p.134) 7 Seasonality and Photoperiodism in Fungi

Till Roenneberg

Tanja Radic

Manfred Gödel

Martha Merrow

Oxford University Press

Compared to the overwhelming evidence of active seasonal adaptation in plants and animals, little is known about seasonality and photoperiodism in fungi. To approach this topic in any organism, several questions have to be answered: (1) Is there evidence for seasonality?; (2) Is there evidence for photobiology — a prerequisite for detecting changing lengths of day and night?; and, (3) Is there evidence for a circadian system that could be used as internal reference to make sense of the changes in day or night length? This chapter summarizes what is known about the questions enumerated above. It describes the first results of investigating seasonality and photoperiodism in Neurospora crassa, a classic model organism in circadian research. As in other organisms, the Neurospora photoperiodic responses rely on a functional circadian clock that involves determination of night length.

Keywords:   Neurospora crassa, photoperiodism, fungi, seasonality, circadian system

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