Differential effects of abscisic acid on desiccation tolerance and carbohydrates in three species of liverworts

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 μM ABA. ABA preculture initiated total desiccation tolerance in R. fluitans, whereas...

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Bibliographic Details
Published in:	Journal of plant physiology Vol. 162; no. 12; pp. 1331 - 1337
Main Authors:	Pence, Valerie C., Dunford, Susan S., Redella, Steven
Format:	Journal Article
Language:	English
Published:	Jena Elsevier GmbH 01-12-2005 Elsevier
Subjects:	ABA abscisic acid Abscisic Acid - physiology Adaptation to environment and cultivation conditions Adaptation, Physiological Agronomy. Soil science and plant productions Biological and medical sciences Bryophyte carbohydrate content Carbohydrate Metabolism carbohydrates Culture Media Desiccation desiccation (plant physiology) drought tolerance Fundamental and applied biological sciences. Psychology Genetics and breeding of economic plants Hepatophyta - physiology In Vitro Techniques Marchantia - physiology Marchantia polymorpha mosses and liverworts Pallavicinia lyellii plant adaptation plant biochemistry plant-water relations Riccia Riccia fluitans Sugars Varietal selection. Specialized plant breeding, plant breeding aims Water - physiology ABA Pallavicinia lyellii Desiccation Riccia fluitans Marchantia polymorpha Bryophyte Sugars Tolerance Bryophyta Hepaticae Survival Abscisic acid Carbohydrate Adaptation
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Summary:	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 μM 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.
Bibliography:	ObjectType-Article-1 SourceType-Scholarly Journals-1 ObjectType-Feature-2 content type line 23
ISSN:	0176-1617 1618-1328
DOI:	10.1016/j.jplph.2005.02.002