Influence of exposure temperature and relative humidity on the response of pinto bean foliage to sulfur dioxide

Journal Article · Mon Jan 01 04:00:00 EST 1979 · Phytopathology; (United States)

DOI:https://doi.org/10.1094/Phyto-69-231· OSTI ID:6167842

Rist, D L; Davis, D D

When 20-day-old pinto bean plants (Phaseolus vulgaris Pinto 111) were exposed to 0.9 ppm sulfur dioxide (SO/sup 2/) the amount of trifoliate leaf injury induced by SO/sub 2/ generally was greater at 32 C than at either 13 or 21 C, and greater at 80% relative humidity (RH) than at 40 and 60% RH. However, injury was less following exposures at 32 C for 1 hr and 21 C for 1 and 2 hr than that caused by equivalent exposures at 13 C. Stomatal conductance increased significantly with increased temperature and RH. Stomatal conductance of trifoliate leaves from plants exposed to SO/sub 2/ was less than that of exposed control plants. The foliar content of SO/sub 2/ evaluated after exposures at 21 and 32C, generally at the higher temperatures. 34 references, 5 figures.

• Research Organization: Pennsylvania State Univ., University Park
• OSTI ID: 6167842
• Journal Information: Phytopathology; (United States), Journal Name: Phytopathology; (United States) Vol. 69:3; ISSN PHYTA
• Country of Publication: United States
• Language: English

Related Subjects

500200 -- Environment
Atmospheric-- Chemicals Monitoring & Transport-- (-1989)
54 ENVIRONMENTAL SCIENCES
560303* -- Chemicals Metabolism & Toxicology-- Plants-- (-1987)
63 RADIATION, THERMAL, AND OTHER ENVIRON. POLLUTANT EFFECTS ON LIVING ORGS. AND BIOL. MAT.
AIR POLLUTION
BACTERIA
BIOLOGICAL ACCUMULATION
CHALCOGENIDES
DATA
EXPERIMENTAL DATA
FOLIAR UPTAKE
HUMIDITY
INFORMATION
LEAVES
LEGUMINOSAE
MICROORGANISMS
NUMERICAL DATA
OPENINGS
OXIDES
OXYGEN COMPOUNDS
PATHOLOGICAL CHANGES
PHASEOLUS
PLANTS
POLLUTION
RHIZOBIUM
STOMATA
SULFUR COMPOUNDS
SULFUR DIOXIDE
SULFUR OXIDES
TEMPERATURE EFFECTS
TOXICITY
UPTAKE