Decline of rubisco activity and net photosynthesis in ozone-treated potato foliage. [Solanum tuberosum]
Conference
·
· Plant Physiol., Suppl.; (United States)
OSTI ID:6064933
The effect of O/sub 3/ on rubisco activity in Solanum tuberosum L. cv Norland foliage was studied as related to oxidant-induced premature senescence. Plants, 25 days old, were exposed to O/sub 3/ increasing from 0.06 to 0.08 ..mu..1/L for 6 h/day for 4 days in a controlled environment chamber. On day 5 plants were exposed to a 6 h simulated inversion in which O/sub 3/ peaked at 0.12 /sup +/1/L. The authors measured initial and total rubisco activities and net photosynthesis of leaves at full expansion on days 0,3,5,6,9 and 12. These parameters declined in both ozone and control plants throughout the course of the experiment. O/sub 3/ exacerbated the decline and produced a significantly greater decrease following the inversion. The enhanced reduction in rubisco activity over time may be an important characteristics of ozone-induced premature senescence. Rubisco activation (initial/total activity) did not change with the treatment. The decrease in activity is most likely due to a decrease in available protein rather than a decrease in the percentage of rubisco activated in vivo.
- Research Organization:
- Pennsylvania State Univ., University Park
- OSTI ID:
- 6064933
- Report Number(s):
- CONF-8707108-
- Conference Information:
- Journal Name: Plant Physiol., Suppl.; (United States) Journal Volume: 83:4
- Country of Publication:
- United States
- Language:
- English
Similar Records
Decline of activity and quantity of ribulose bisphosphate carboxylase/oxygenase and net photosynthesis in ozone-treated potato foliage
Effect of ozone on indicators of leaf aging. [Solanum tuberosum]
Impact of ozone on the activity and quantity of ribulose bisphosphate carboxylase/oxygenase in potato foliage and its relation to premature senescence
Journal Article
·
Fri Sep 01 00:00:00 EDT 1989
· Plant Physiology; (USA)
·
OSTI ID:5925555
Effect of ozone on indicators of leaf aging. [Solanum tuberosum]
Conference
·
Wed May 01 00:00:00 EDT 1991
· Plant Physiology, Supplement; (United States)
·
OSTI ID:5559388
Impact of ozone on the activity and quantity of ribulose bisphosphate carboxylase/oxygenase in potato foliage and its relation to premature senescence
Thesis/Dissertation
·
Thu Dec 31 23:00:00 EST 1987
·
OSTI ID:5257016
Related Subjects
500200 -- Environment
Atmospheric-- Chemicals Monitoring & Transport-- (-1989)
54 ENVIRONMENTAL SCIENCES
560300* -- Chemicals Metabolism & Toxicology
63 RADIATION, THERMAL, AND OTHER ENVIRON. POLLUTANT EFFECTS ON LIVING ORGS. AND BIOL. MAT.
BIOLOGICAL EFFECTS
BIOLOGICAL STRESS
CARBON-CARBON LYASES
CARBOXY-LYASES
CARBOXYLASE
CHEMICAL REACTIONS
ENZYME ACTIVITY
ENZYMES
LEAVES
LYASES
OZONE
PHOTOCHEMICAL REACTIONS
PHOTOSYNTHESIS
PLANTS
SOLANUM
SOLANUM TUBEROSUM
SYNTHESIS
Atmospheric-- Chemicals Monitoring & Transport-- (-1989)
54 ENVIRONMENTAL SCIENCES
560300* -- Chemicals Metabolism & Toxicology
63 RADIATION, THERMAL, AND OTHER ENVIRON. POLLUTANT EFFECTS ON LIVING ORGS. AND BIOL. MAT.
BIOLOGICAL EFFECTS
BIOLOGICAL STRESS
CARBON-CARBON LYASES
CARBOXY-LYASES
CARBOXYLASE
CHEMICAL REACTIONS
ENZYME ACTIVITY
ENZYMES
LEAVES
LYASES
OZONE
PHOTOCHEMICAL REACTIONS
PHOTOSYNTHESIS
PLANTS
SOLANUM
SOLANUM TUBEROSUM
SYNTHESIS