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United States Department of Agriculture

Agricultural Research Service

Title: Phylogeny of Desiccation Tolerance in Plants

item Zoltan, Tuba - AGRIC UNIV OF GODOLLA
item Oliver, Melvin
item Mishler, Brent - UNIV OF CA, BERKELEY

Submitted to: International Botanical Congress
Publication Type: Abstract Only
Publication Acceptance Date: August 1, 1999
Publication Date: N/A

Technical Abstract: Recent synthetic phylogenetic analyses suggest that desiccation tolerance was primitively present in the bryophytes (the basal-most living clades of land plants), but was lost in the evolution of tracheophytes. However, at least one independent evolution (or re-evolution) of desiccation-tolerance occurred in Selaginella and in the ferns. Within the Angiosperms, at least eight independent cases of evolution (or re-evolution) of desiccation- tolerance occurred. The time scale of desiccation, rehydration and responsiveness are different in different lineages. We map these phenotypic expressions of desiccation tolerance onto the most recent cladograms, and look for ecological/biogeographic correlates.

Last Modified: 4/19/2015
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