Notes: Foliar Peroxidase and Acid Phosphatase Activity Response to Low Level SO2 Exposure in Eastern White Pine Clones
Tolerant and sensitive clones of eastern white pine were fumigated for 2 hr with 150 g m-3 (5 pphm) SO2. Peroxidase (PER) and acid phosphatase (AP) activity was measured in extracts from foliage collected immediately prior to fumigation, and at 0, 2, 4, and 24 hr following fumigation. Extracts from sensitive clones exhibited greater PER activity than tolerant clones. Fumigation did not significantly increase PER activity in either class. Tolerant and sensitive controls did not differ in AP activity. Foliar PER activity may hold promise for screening individuals in tree improvement programs. Forest Sci. 28:661-664.
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Document Type: Miscellaneous
Affiliations: The Department of Forestry, Ohio Agricultural Research and Development Center, Wooster, OH 44691
Publication date: 1982-09-01
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