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Abstract Detail


Genome, Phenome, Environment, and Evolution of Land Plants

Cooke, Todd J. [1], Liu, Zhongchi [1].

Body plans of land plants: Plausible roles of auxin action.

Body plans of multicellular charophytes and land plants can be characterized by the positional relationships of their major organs and the meristems producing those organs. Considerable evidence from several disciplines, including paleobotany, molecular genetics, and physiology, supports the interpretation that the hormone auxin (indole-3-acetic acid) has repeatedly played critical roles in the origin and diversification of plant body plans. This presentation will first summarize the major structural events in the evolution of those body plans, and then it will attempt to provide an integrated perspective of how the evolutionary trends observed in auxin biosynthesis, transport, and action are likely to have contributed to body plan evolution.


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1 - University of Maryland, Cell Biology and Molecular Genetics, College Park, Maryland, 20742, USA

Keywords:
body plan
charophytes
Auxin transport
land plants
auxin action.

Presentation Type: Symposium or Colloquium Presentation
Session: SY4
Location: Ballroom 2/Cliff Lodge - Level B
Date: Monday, July 27th, 2009
Time: 1:30 PM
Number: SY4002
Abstract ID:719


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