Premium
Genome size as a predictor of guard cell length in Arabidopsis thaliana is independent of environmental conditions
Author(s) -
Lomax Barry H.,
Woodward F. Ian,
Leitch Ilia J.,
Knight Charles A.,
Lake Janice A.
Publication year - 2009
Publication title -
new phytologist
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 3.742
H-Index - 244
eISSN - 1469-8137
pISSN - 0028-646X
DOI - 10.1111/j.1469-8137.2008.02700.x
Subject(s) - arabidopsis thaliana , guard cell , biology , arabidopsis , genome , computational biology , genetics , gene , botany , mutant
Summary• 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 CO 2 , 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.