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Effect of simulated acid rain on the occurrence of Lophodermium on Japanese black pine needles

Published online by Cambridge University Press:  01 November 1998

EI-ICHIRO ASAI ,
KUNIHIKO HATA  and
KAZUYOSHI FUTAI
EI-ICHIRO ASAI
Affiliation:
Faculty of Agriculture, Kyoto University, Kyoto 606-8502, Japan
KUNIHIKO HATA
Affiliation:
Faculty of Agriculture, Kyoto University, Kyoto 606-8502, Japan Present affiliation. Research Center for Pathogenic Fungi and Microbial Toxicoses, Chiba University, Chiba 260-8673, Japan.
KAZUYOSHI FUTAI
Affiliation:
Faculty of Agriculture, Kyoto University, Kyoto 606-8502, Japan
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Abstract

The occurrence of Lophodermium on fallen needles and Leptostroma, the mitosporic state of Lophodermium, on living needles of Japanese black pine trees treated with simulated acid rain (SAR, pH 3) or tap water (control, pH 6·3) were studied. The amount of fallen needles was also examined. Significantly more needles fell from SAR-treated trees than from control trees, though there were no visible symptoms in the needles of SAR-treated trees. The detection frequency of Lophodermium on fallen needles, and that of endophytic Leptostroma on 2 year old and 3 year old needles, was lower in SAR-treated than control trees. The reduction in the detection of Lophodermium/Leptostroma on needles implied the reduction in the density of endophytic fungi with air pollution.

Type
Research Article
Information
Mycological Research , Volume 102 , Issue 11 , November 1998 , pp. 1316 - 1318
Copyright
© The British Mycological Society 1998

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