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Life Sciences

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California Polytechnic State University, San Luis Obispo

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2009

Arabidopsis thaliana

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Genome Size As A Predictor Of Guard Cell Length In Arabidopsis Thaliana Is Independent Of Environmental Conditions, Barry H. Lomax, F. Ian Woodward, Ilia J. Leitch, Charles A. Knight, Janice A. Lake Jan 2009

Genome Size As A Predictor Of Guard Cell Length In Arabidopsis Thaliana Is Independent Of Environmental Conditions, Barry H. Lomax, F. Ian Woodward, Ilia J. Leitch, Charles A. Knight, Janice A. Lake

Biological Sciences

• 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 …