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Air pollutant effects influenced by plant-environmental interaction

Conference · · ACS Symp. Ser.; (United States)
OSTI ID:5871663
Genetic variability is a major determinant of plant tolerance to air pollutants. Tolerance and characteristics of symptoms are also dependent on exposure mode - acute exposure usually produces, symptoms quite different from those resulting from chronic exposure. Factors which influence susceptibility/tolerance include: (a) rapid-vigorous growth usually increased susceptibility; (b) plants grown in intense light are more susceptible to PAN; (c) low light intensity enhanced susceptibility to ozone; (d) a long dark period (24 hr) prior to exposure increased ozone susceptibility; (e) light before and after exposure to PAN is required for injury development; (f) a long photoperiod (24 hr) before exposure inhibited ozone injury; (g) high temperature during exposure in the field increased ozone susceptibility; (h) high relative humidity increased susceptibility to ozone and PAN; (i) soil moisture deficiency reduced susceptibility to ozone, PAN and SO/sub 2/; (j) salinity reduced susceptibility to ozone; (k) high nutrients (nitrogen) generally increased susceptibility; and (l) soil oxygen deficiency reduced susceptibility. 26 references.
Research Organization:
Univ. of California, Riverside
OSTI ID:
5871663
Report Number(s):
CONF-740349-
Conference Information:
Journal Name: ACS Symp. Ser.; (United States) Journal Volume: 3
Country of Publication:
United States
Language:
English