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Maternal and zygotic temperature signalling in the control of seed dormancy and germination

Published online by Cambridge University Press:  05 January 2012

Sarah Kendall
Affiliation:
CNAP, Department of Biology, University of York, PO BOX 373, YorkYO10 5DD, UK
Steven Penfield*
Affiliation:
School of Life and Environmental Sciences, Geoffrey Pope Building, University of Exeter, Stocker Road, ExeterEX4 4QD, UK
*
*Correspondence Email: S.D.Penfield@exeter.ac.uk

Abstract

Temperature has a key influence over seed dormancy and germination, allowing wild plants to synchronize their life history with the seasons. In this review we discuss the signalling pathways through which temperature is integrated into seed physiology and the control of primary and secondary dormancy, with an emphasis on understanding maternal effects and responses dictated by the zygotic tissues. A key emerging paradigm is that temperature signalling in seeds must be understood in relation to whole plant genetics and physiology, as overlapping pleiotropic roles for temperature sensing and hormone signalling pathways are commonplace.

Type
Review Article
Copyright
Copyright © Cambridge University Press 2012

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