Distribution of Actinoplanetes in Soils of Japan
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概要
- 論文の詳細を見る
The distribution of actinoplanetes, including a very small number of their relatives, in soil samples collected from various districts of Japan was investigated using the baiting technique with Pinus pollen. The samples investigated included 382 soil samples and 6 beach sand samples.The distribution of actinoplanetes greatly varied with soil type. The percentages of actinoplanetes-positive samples in soils of mountain grassland, mountain forest, level-land forest, riverside and similar places, paddy rice fields, and cultivated fields were 29,29,52,74,87 and 89,respectively. No actinoplanetes-positive sample was detected from beach sand. Distribution was most strongly affected by the pH value of the soil. Percentages of positive samples rapidly increased in the pH range of 4.0 to 5.0 and were 100% within the pH range of 6.4 to 7.2. A loss on ignition value (a function of the organic matter content) of 6-10% gave the optimum environment for the occurrence of actinoplanetes. Althoughh the number of general actinomycetes in the soils having the same level of pH value increased with organic matter content, an excess of organic matter made unfavorable conditions for actinoplanetes, particularly in acid soils.
- 公益社団法人日本生物工学会の論文
- 1977-10-25
著者
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Nonomura Hideo
Department Of Applied Chemistry And Biotechnology Faculty Of Engineering Yamanashi University
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TAKAGI SHIGEMITSU
Department of Fermentation Technology, Faculty of Engineering, Yamanashi University
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Takagi Shigemitsu
Department Of Fermentation Technology Faculty Of Engineering Yamanashi University
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- Distribution of Actinoplanetes in Soils of Japan