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- Title
Genome size as a predictor of guard cell length in Arabidopsis thaliana is independent of environmental conditions.
- Authors
Lomax, Barry H.; Woodward, F. Ian; Leitch, Ilia J.; Knight, Charles A.; Lake, Janice A.
- Abstract
• The recent discovery of a strong positive relationship between angiosperm genome size and stomatal guard cell length (GCL) opens the possibility of using plant fossil guard cell size as a proxy for changes in angiosperm genome size over periods of environmental change. • The responses of GCL to environmental stimuli are currently unknown and may obscure this predictive relationship. • Here, we investigated the effects of environmental variables (atmospheric CO2, drought, relative humidity, irradiance, ultraviolet radiation and pathogen attack) on GCL in the model plant Arabidopsis thaliana to quantify environmentally induced variation. • GCL responded to all variables tested, but the changes incurred did not significantly impinge on the predictive capability of the relationship.
- Subjects
ANGIOSPERMS; STOMATA; ARABIDOPSIS thaliana; ENVIRONMENTAL research; GENOMICS; GLOBAL environmental change; ATMOSPHERIC carbon dioxide &; the environment; DROUGHTS &; the environment; ULTRAVIOLET radiation
- Publication
New Phytologist, 2009, Vol 181, Issue 2, p311
- ISSN
0028-646X
- Publication type
Article
- DOI
10.1111/j.1469-8137.2008.02700.x