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The Molecular Organography of Plants$
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Quentin Cronk

Print publication date: 2009

Print ISBN-13: 9780199550357

Published to Oxford Scholarship Online: May 2009

DOI: 10.1093/acprof:oso/9780199550357.001.1

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The Organography of the Leaf

The Organography of the Leaf

Chapter:
(p.79) CHAPTER 4 The Organography of the Leaf
Source:
The Molecular Organography of Plants
Author(s):

Quentin Cronk

Publisher:
Oxford University Press
DOI:10.1093/acprof:oso/9780199550357.003.0004

This chapter chronicles the evolution of the leaf, the essential organ of terrestrial carbon cycling. Homology between phyllidia, microphylls, and megaphylls is discussed, and leaf evolution is placed within the context of the evolution of leaf developmental networks including the ARP/KNOX regulatory module. The enormous variety of forms adopted by leaves (spines, tendrils, ascidia etc) is surveyed in a morphological and molecular context. The determination of leaf shape, lobing, marginal toothing and compound leaf form is also treated.

Keywords:   thallus, phyllidia, microphylls, megaphylls, euphyllophytes, leaf evolution, compound leaves, simple leaves, KNOX genes, ARP genes

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