Notes: IAA Involvement in Fungal Protection of Virginia Pine Seedlings Exposed to Methane
Pinus virginiana seedlings treated with 1 percent CH4 for 10 weeks had poorer root development than similar seedlings treated with air. When the mycorrhizal fungus, Amanita rubescens, was grown in the proximity of the pine roots, root development of plants treated with air or CH4 was better than that of similar uninoculated seedlings. Treatment with air or CH4 did not significantly influence dry weight, protein content, carbohydrate content, or IAA production of A. rubescens. P. virginiana seedlings inoculated with A. rubescens and treated with CH4 or air for 10 weeks contained significantly higher concentrations of IAA than similarly treated uninoculated seedlings. Addition of 10 mg IAA/liter to growth medium of seedlings provided significant protection against harmful effects of concurrent CH4 treatments, but this and even higher concentrations of IAA did not change endogenous levels of IAA in seedlings. Forest Sci. 26:172-176.
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Document Type: Miscellaneous
Affiliations: Professor of Plant Pathology, Botany Department, University of Maryland, College Park, MD 20742
Publication date: 1980-03-01
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