Resistance to injury by sulfur dioxide

Journal Article · Sun Aug 01 04:00:00 EDT 1982 · Plant Physiol.; (United States)

OSTI ID:6432784

Sekiya, J; Wilson, L G; Filner, P

In Cucurbitaceae young leaves are resistant to injury from acute exposure to SO/sub 2/, whereas mature leaves are sensitive. After exposure of cucumber (Cucumis sativus L.) plants to SO/sub 2/ at injurious concentrations, illuminated leaves emit volatile sulfur, which is solely H/sub 2/S. Young leaves emit H/sub 2/S many times more rapidly than do mature leaves. Young leaves convert approximately 10% of absorbed (/sup 35/S)SO/sub 2/ to emitted (/sup 35/S)H/sub 2/S, but mature leaves convert less than 2%. These results suggest that a high capability for the reduction of SO/sub 2/ to H/sub 2/S and emission of the H/sub 2/S is a part of the biochemical basis of the resistance of young leaves to SO/sub 2/.

• Research Organization: Michigan State Univ., Dept. of Energy Plant Research Lab., East Lansing
• DOE Contract Number: AC02-76ER01338
• OSTI ID: 6432784
• Journal Information: Plant Physiol.; (United States), Journal Name: Plant Physiol.; (United States) Vol. 70:2; ISSN PLPHA
• Country of Publication: United States
• Language: English

Related Subjects

550501* -- Metabolism-- Tracer Techniques
560303 -- Chemicals Metabolism & Toxicology-- Plants-- (-1987)
59 BASIC BIOLOGICAL SCIENCES
63 RADIATION, THERMAL, AND OTHER ENVIRON. POLLUTANT EFFECTS ON LIVING ORGS. AND BIOL. MAT.
BETA DECAY RADIOISOTOPES
BETA-MINUS DECAY RADIOISOTOPES
BIOLOGICAL EFFECTS
CHALCOGENIDES
CHEMICAL REACTIONS
CUCUMBERS
DAYS LIVING RADIOISOTOPES
EMISSION
EVEN-ODD NUCLEI
FOOD
HYDROGEN COMPOUNDS
HYDROGEN SULFIDES
INJURIES
ISOTOPE APPLICATIONS
ISOTOPES
LABELLED COMPOUNDS
LEAVES
LIGHT NUCLEI
METABOLISM
NUCLEI
OXIDES
OXYGEN COMPOUNDS
RADIOISOTOPES
REDUCTION
SENSITIVITY
SULFIDES
SULFUR 35
SULFUR COMPOUNDS
SULFUR DIOXIDE
SULFUR ISOTOPES
SULFUR OXIDES
TRACER TECHNIQUES
VEGETABLES