Biochemical studies conducted under controlled conditions suggested that low concentrations of SO2 which normally do not produce any visual symptoms on the foliage cause injury to forest vegetation by altering pigment (chlorophyll, phaeophytin and chlorophyllide) metabolism, by inhibiting lipid synthesis and activities of various important enzyme systems and by causing ultrastructural disorganization of cellular membranes. In general, aqueous and gaseous SO2 produced results very similar to each other. Plants, when fumigated with SO2 at the ambient air quality standards, exhibited various biochemical responses that can have a deleterious effect on the normal growth and yield of vegetation. However, 24-48 h after transferring the fumigated plants to an SO2-free environment, there was a considerable recovery of such functions.
Related Resources
Drivers, Pressures, and State Responses to Inform Long-term Oil Sands Wetland Monitoring Program Objectives
Resource Date:
August
2021
Population Dynamics of Caribou Shaped by Glacial Cycles Before the Last Glacial Maximum
Resource Date:
2021
Temperature, Moisture and Freeze–thaw Controls on CO2 Production in Soil Incubations From Northern Peatlands
Resource Date:
December
2021
The Essential Carbon Service Provided by Northern Peatlands
Resource Date:
November
2021
Was this helpful?
|