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Dessication Tolerance in Bryophytes and Lichens

Wood, Andrew J [1].

The Nature and Distribution of Vegetative Desiccation Tolerance in Hornworts, Liverworts and Mosses.

Vegetative desiccation-tolerance, defined as the ability of vegetative structures to recover from the air-dry state, is a widely distributed phenotype in both liverworts and mosses. However, based upon the primary literature, vegetative desiccation-tolerance is absent in hornworts. We are currently generating a comprehensive checklist of liverwort and moss species with documented vegetative desiccation-tolerance. In this symposia we will expand the treatise that vegetative desiccation tolerance in the bryophytes reflects the primitive mechanism that originated in vegetative tissues of land plants (as discussed in a companion talk) by: 1) discussing the distribution of vegetative desiccation-tolerance in bryophytes, 2) comparing and contrasting vegetative desiccation-tolerance amongst bryophytes, and 3) providing specific examples of physiological, molecular and biochemical mechanisms that we think are key components of the phenotype.


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1 - Southern Illinois University, Department of Plant Biology, 1125 Lincoln Drive, Carbondale, Illinois, 62901-6509, USA

Keywords:
Gene expression
desiccation tolerance.

Presentation Type: Symposium or Colloquium Presentation
Session: 27-4
Location: Salon K - Austin Grand Ballroom/Hilton
Date: Tuesday, August 16th, 2005
Time: 10:15 AM
Abstract ID:418


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