Loveys, Beth; Egerton, John (Jack); Ball, Marilyn
Elevated atmospheric CO2 adversely affects freezing tolerance in many evergreens, but the underlying mechanism(s) have been elusive. We compared effects of elevated CO2 with those of daytime warming on acclimation of snow gum (Eucalyptus pauciflora) to freezing temperatures under field conditions. Reduction in stomatal conductance gc under elevated CO2 was shown to cause leaf temperature to increase by up to 3°C. In this study, this increase in leaf temperature was simulated under ambient CO2...[Show more]
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