Induced resistance to ozone injury of soybean by tobacco ringspot virus

Journal Article · Mon May 01 04:00:00 EDT 1978 · Phytopathology; (United States)

DOI:https://doi.org/10.1094/Phyto-68-715· OSTI ID:5092392

Vargo, R H; Pell, E J; Smith, S H

Soybean plants, 12-18 days after sowing, were inoculated with tobacco ringspot virus (TRSV) on one primary leaf at 4, 6, 8, or 10 days before a 4-hr exposure to ozone at 697 or 797 ..mu..g, m (0.35 or 0.40 ppm). Primary leaves of virus-inoculated plants became more resistant to ozone injury with increasing time after inoculation. Ozone resistance was more closely correlated to extent of TRSV-induced apical necrosis than to time after inoculation. The TRSV-induced apical necrosis required for a significant reduction in ozone sensitivity occurred prior to the detection of virus in the noninoculated primary leaves. Leaf conductances were similar in primary leaves of virus-infected and noninfected plants before an ozone exposure; during the exposure, conductances decreased more rapidly in infected plants, but conductances of noninfected plants were similar at the end of the 2-hr exposure. Although TRSV influenced stomatal response to ozone, this effect did not appear to be the primary factor associated with the induced resistance to ozone.

• Research Organization: Pennsylvania State Univ., University Park
• OSTI ID: 5092392
• Journal Information: Phytopathology; (United States), Journal Name: Phytopathology; (United States) Vol. 68:5; ISSN PHYTA
• Country of Publication: United States
• Language: English

Related Subjects

560303* -- Chemicals Metabolism & Toxicology-- Plants-- (-1987)
63 RADIATION, THERMAL, AND OTHER ENVIRON. POLLUTANT EFFECTS ON LIVING ORGS. AND BIOL. MAT.
AIR POLLUTION
BIOLOGICAL EFFECTS
DISEASES
FOLIAR UPTAKE
GLYCINE HISPIDA
INFECTIOUS DISEASES
INJURIES
LEGUMINOSAE
OPENINGS
OZONE
PLANTS
POLLUTION
STOMATA
TOLERANCE
UPTAKE
VIRAL DISEASES