RT Journal Article
SR Electronic
T1 Plant Injury by Air Pollutants: Influence of Humidity on Stomatal Apertures and Plant Response to Ozone
JF Science
JO Science
FD American Association for the Advancement of Science
SP 1209
OP 1210
DO 10.1126/science.163.3872.1209
VO 163
IS 3872
A1 Otto, Harry W.
A1 Daines, Robert H.
YR 1969
UL http://science.sciencemag.org/content/163/3872/1209.abstract
AB Ozone injury to Bel W3 tobacco and pinto bean plants increases with increasing humidity. The degree of plant injury sustained correlates well with porometer measurements; this indicates that the size of stomatal apertures increases with increasing humidity. Humidity may therefore influence plant response to all pollutants and may account in part for the greater sensitivity of plants to ozone-type injury in the eastern United States compared with the same species of plants grown in the Southwest. with those grown in the Southwest.