Ozone resistance of leaves as related to their sulfhydryl and adenosine triphosphate content

Journal Article · Mon Jan 01 04:00:00 EST 1968 · Phytopathology; (United States)

OSTI ID:5959873

Tomlinson, H; Rich, S

Ozonation lowers the sulfhydryl content of the leaves of beans, Phaseolus vulgaris, spinach, Spinacia oleracea, and tobacco, Nicotiana tabacum. Tobacco and bean leaves treated with sulfhydryl-binding reagents, such as ..cap alpha..-iodoacetamide and ..cap alpha..-iodoacetic acid, develop symptoms similar to those produced by ozone. A tobacco variety resistant to ozone is also more resistant to damage from sulfhydryl-binding reagents than is a variety of tobacco susceptible to ozone. With leaves from the same tobacco plant, the older the leaf the more severely it is damaged by the sulfhydryl-binding reagents. This parallels the pattern of susceptibility to ozone. Ozonation also lowers the adenosine triphosphate (ATP) content of bean leaves. Bean leaves were made resistant to ozone by allowing them to take up 10/sup -3/ M ATP through their petioles before ozonation. On tobacco, the younger, more ozone-resistant leaves have higher concentrations of both sulfhydryl groups and ATP than do the older, more ozone-susceptible leaves. However, leaves of a tobacco variety resistant to ozone contain lower concentrations of both sulfhydryl groups and ATP than do comparable leaves of a tobacco variety susceptible to ozone. 12 references, 3 tables.

• Research Organization: Connecticut Agricultural Experiment Station, New Haven
• OSTI ID: 5959873
• Journal Information: Phytopathology; (United States), Journal Name: Phytopathology; (United States) Vol. 58; 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
ATP
BIOLOGICAL EFFECTS
CORRELATIONS
FOOD
LEGUMINOSAE
METABOLISM
NICOTIANA
NUCLEOTIDES
ORGANIC COMPOUNDS
OZONE
PHASEOLUS
PLANTS
POLLUTION
RADICALS
SENSITIVITY
SPINACH
SULFHYDRYL RADICALS
VARIATIONS
VEGETABLES