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Understanding Flowers and Flowering, Second Edition$
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Beverley Glover

Print publication date: 2014

Print ISBN-13: 9780199661596

Published to Oxford Scholarship Online: April 2014

DOI: 10.1093/acprof:oso/9780199661596.001.0001

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The ABC model and the diversity of plant reproductive structures

The ABC model and the diversity of plant reproductive structures

(p.115) Chapter 11 The ABC model and the diversity of plant reproductive structures
Understanding Flowers and Flowering, Second Edition

Beverley Glover

Oxford University Press

The majority of the ABC genes involved in floral organ identity encode MADS box transcription factors, a very ancient family of DNA-binding proteins. By tracing the evolutionary history of this gene family it is possible to investigate the molecular processes which underlie the evolution of flowers. By tracing the variation in regulation and function of this gene family it is possible to explore the basis of floral morphological variation. In addition, this chapter considers in more detail the status of the A function genes as an integral part of the ABC model. Since flowers are one of the key distinguishing features of the angiosperms, and have been argued to be responsible for their astonishing radiation into the most species-rich plant division by far, the evolution of these transcription factors is of particular interest in reconstructing plant evolutionary history.

Keywords:   ABC model, fading borders model, flower evolution, grass flower, gymnosperm ABC genes, sliding boundaries model, tepaloid monocot

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