松樹の根に寄生するアヅマタケの研究

概要

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Folyporus orientalis is a stipitate yellow fungus described first by LLOYD in 1912. But so far as a the writers know, the present fungus seems to be a species endemic to Japan. Altyougy UMEMURA and YASUDA have already published brief notes on this fungus in Japanese, only the morphological description has been known up to the present time. According to the writers' investigations, the fungus is widely distributed in the southern part of Honshu as well as in Kiushu and parasitic commonly on the roots of pine trees, causing very slowly white pockets in the woody tissue. In the vicinity of Kyoto the fungus was often found on the dead and living roots of Pinus densflora S. et Z. in many places, where trees of more than thirty years growth are found. In the present paper the results of the writers' investigations on the morphological characters, as well as the reactions of the yellow pigment of the sporphores to various chemicals, are first described. Pure cultures of the fungus were readily obtained by placeing a piece of the fungus tissue and also of the rotting wood on an agar plate in PETRI dishes. The growth habits of the mycelium on sixteen different media were compared. For the most favorable agar and the most favorable liquid media the apricot decoction proved to be best. The relation of temperature to the growth of the fungus was studied by growing the myselium on poured plates of apricot decoction agar, of potato decoction agar and of soy agar, after SAITO, incubated at different temperatures. It was found that the optimum temperature for the growth of the mycelium of this fungus lies between approximately 28゜ and 32℃. But Commonly its vigorous growth was shown at from 32゜ to 24℃. Its maximum and minimum temperatures seem to be about 38℃. and a little below 12℃. Finally the writers classified the fungus as belonging to the group of lignin dissolving fungi.
日本植物病理学会の論文
1928-10-26

著者

野島友雄
華北交通中央鐵道農場

松樹の根に寄生するアヅマタケの研究

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