MINERALIZATION OF NITROGEN AND PHOSPHORUS BY MIXED CULTURES OF THE CILIATE PROTOZOAN COLPODA-STEINII, THE NEMATODE RHABDITIS SP AND THE BACTERIUM PSEUDOMONAS-FLUORESCENS
MINERALIZATION OF NITROGEN AND PHOSPHORUS BY MIXED CULTURES OF THE CILIATE PROTOZOAN COLPODA-STEINII, THE NEMATODE RHABDITIS SP AND THE BACTERIUM PSEUDOMONAS-FLUORESCENS
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DOI：
10.1016/0038-0717(86)90087-8
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发表时间：
1986-01-01
影响因子：
9.7
通讯作者：
GRIFFITHS, BS
中科院分区：
文献类型：
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作者：
GRIFFITHS, BS
在土壤和液体培养中，一种线虫（Rhabditis sp.）的存在增加了纤毛虫原生动物Copoda steinii Maupas的数量。线虫数量的发展受到纤毛虫的抑制。对孵化线虫的观察，以及荧光假单胞菌的总数和活菌数的计数表明，Rhabditus sp.增加了细菌的产量，但史坦氏假单胞菌的活性抑制了线虫的摄食。当两种细菌食草动物联合存在时，C. steinii受益于Rhabditis sp诱导的细菌产量增加。当线虫和纤毛虫同时存在时，这一比例进一步增加。放牧对土壤中碳酸氢盐可溶性磷酸盐（Pi）的含量没有影响，而线虫对土壤的含量有不同的影响。
Numbers of the ciliate protozoan Copoda steinii Maupas were increased by the presence of a nematode (Rhabditis sp.), in soil and liquid culture. The development of nematode numbers was inhibited by the ciliate. Observations of hatching nematodes, together with counts of total and viable numbers of the bacterium Pseudomonas fluorescens, indicate that Rhabditus sp. increased bacterial productivity but that the activity of C. steinii inhibited feeding by the nematode. When the two bacterial grazers were present in combination C. steinii benefited from increased bacterial productivity induced by Rhabditis sp. Both grazers increased the mineralization of .**GRAPHIC**. when added separately to soil, and this was further increased when nematodes and ciliates were present in combination. There was no effect of grazing on levels of bicarbonate-soluble phosphate (Pi), while nematodes had a variable effect on levels of soil .**GRAPHIC**.