Document Detail


Differential effects of abscisic acid on desiccation tolerance and carbohydrates in three species of liverworts.
MedLine Citation:
PMID:  16425451     Owner:  NLM     Status:  MEDLINE    
Abstract/OtherAbstract:
Tissues of three species of in vitro grown liverworts, Riccia fluitans, Pallavicinia lyellii, and Marchantia polymorpha, were subjected to rapid drying with and without preculture for 1 week on medium containing 10 microM ABA. ABA preculture initiated total desiccation tolerance in R. fluitans, whereas control tissues were killed after 30 min of drying. Survival was also improved in P. lyellii, whereas ABA did not affect survival of M. polymorpha after rapid drying. ABA treatment did, however, reduce the rate of water loss in M. polymorpha. Total soluble carbohydrates were increased in ABA-treated R. fluitans and P. lyellii, but not in M. polymorpha, although there was no correlation between survival and changes in the percentage of these carbohydrates as reducing sugars. These differences in response to ABA and desiccation likely reflect different adaptations of these three species to conditions in situ.
Authors:
Valerie C Pence; Susan S Dunford; Steven Redella
Publication Detail:
Type:  In Vitro; Journal Article    
Journal Detail:
Title:  Journal of plant physiology     Volume:  162     ISSN:  0176-1617     ISO Abbreviation:  J. Plant Physiol.     Publication Date:  2005 Dec 
Date Detail:
Created Date:  2006-01-20     Completed Date:  2006-04-13     Revised Date:  2006-11-15    
Medline Journal Info:
Nlm Unique ID:  9882059     Medline TA:  J Plant Physiol     Country:  Germany    
Other Details:
Languages:  eng     Pagination:  1331-7     Citation Subset:  IM    
Affiliation:
Center for Conservation and Research of Endangered Wildlife, Cincinnati Zoo & Botanical Garden, OH 45220, USA. valerie.pence@cincinnatizoo.org
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MeSH Terms
Descriptor/Qualifier:
Abscisic Acid / physiology*
Adaptation, Physiological
Carbohydrate Metabolism*
Culture Media
Desiccation
Hepatophyta / physiology*
Marchantia / physiology
Water / physiology
Chemical
Reg. No./Substance:
0/Culture Media; 21293-29-8/Abscisic Acid; 7732-18-5/Water

From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine


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