Photosynthesis, dark respiration, and growth of Rumex patientia L. exposed to ultraviolet irradiance (288 to 315 nanometers) simulating a reduced atmospheric ozone column
Journal Article
·
· Plant Physiol.; (United States)
Net photosynthesis, dark respiration, and growth of Rumex patientia L. exposed to a ultraviolet irradiance (288-315 nanometers) simulating a 0.18 atm cm stratospheric ozone column were determined. The ultraviolet irradiance corresponding to this 38% ozone decrease from normal was shown to be an effective inhibitor of photosynthesis and leaf growth. The repressive action on photosynthesis accumulated through time whereas leaf growth was retarded only during the initial few days of exposure. Small increases in dark respiration rates occurred but did not continue to increase with longer exposure periods. A reduction in total plant dry weight and leaf area of approximately 50% occurred after 22 days of treatment, whereas chlorophyll concentrations remained unaltered. 29 references, 7 figures, 1 table.
- Research Organization:
- Utah State Univ., Logan
- OSTI ID:
- 6428850
- Journal Information:
- Plant Physiol.; (United States), Journal Name: Plant Physiol.; (United States) Vol. 58:4; ISSN PLPHA
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
560141* -- Radiation Effects on Plants-- Basic Studies-- (-1987)
560303 -- Chemicals Metabolism & Toxicology-- Plants-- (-1987)
63 RADIATION, THERMAL, AND OTHER ENVIRON. POLLUTANT EFFECTS ON LIVING ORGS. AND BIOL. MAT.
AIR POLLUTION
BIOLOGICAL EFFECTS
BIOLOGICAL RADIATION EFFECTS
CARBOXYLIC ACIDS
CHEMICAL REACTIONS
CHLOROPHYLL
DATA
ELECTROMAGNETIC RADIATION
EXPERIMENTAL DATA
GROWTH
HETEROCYCLIC ACIDS
HETEROCYCLIC COMPOUNDS
INFORMATION
NUMERICAL DATA
ORGANIC ACIDS
ORGANIC COMPOUNDS
ORGANIC NITROGEN COMPOUNDS
OZONE
PHOTOCHEMICAL REACTIONS
PHOTOSYNTHESIS
PHYTOCHROMES
PIGMENTS
PLANT GROWTH
PLANTS
POLLUTION
PORPHYRINS
RADIATION EFFECTS
RADIATIONS
RESPIRATION
SIMULATION
SYNTHESIS
ULTRAVIOLET RADIATION
WEEDS
WEIGHT
560303 -- Chemicals Metabolism & Toxicology-- Plants-- (-1987)
63 RADIATION, THERMAL, AND OTHER ENVIRON. POLLUTANT EFFECTS ON LIVING ORGS. AND BIOL. MAT.
AIR POLLUTION
BIOLOGICAL EFFECTS
BIOLOGICAL RADIATION EFFECTS
CARBOXYLIC ACIDS
CHEMICAL REACTIONS
CHLOROPHYLL
DATA
ELECTROMAGNETIC RADIATION
EXPERIMENTAL DATA
GROWTH
HETEROCYCLIC ACIDS
HETEROCYCLIC COMPOUNDS
INFORMATION
NUMERICAL DATA
ORGANIC ACIDS
ORGANIC COMPOUNDS
ORGANIC NITROGEN COMPOUNDS
OZONE
PHOTOCHEMICAL REACTIONS
PHOTOSYNTHESIS
PHYTOCHROMES
PIGMENTS
PLANT GROWTH
PLANTS
POLLUTION
PORPHYRINS
RADIATION EFFECTS
RADIATIONS
RESPIRATION
SIMULATION
SYNTHESIS
ULTRAVIOLET RADIATION
WEEDS
WEIGHT