Metal concentrations in wood of sugar maple infected with sapstreak disease

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Abstract
The inoculation of sugar maple (Acersaccharum Marsh.) saplings with Ceratocystisvirescens (Davidson) C. Moreau (=Ceratocystiscoerulescens (Munch) Bakshi), the causal agent of sapstreak disease, resulted in infection and the development of extensive discoloration. A distinct column boundary layer formed between the discolored wood and sapwood in wounded saplings infected with C. virescens and in noninoculated controls. Elemental markers of discoloration and column boundary layer formation were similar for infected and noninoculated control saplings. The extensive damage caused by sapstreak disease is interpreted as resulting from the rapid spread of the pathogen prior to column boundary layer formation.

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