Laboratory of Soil Microbiology, Department of Soil, Crop, and Atmospheric Sciences, Cornell University, Ithaca, New York 14853.
Appl Environ Microbiol. 1991 Jan;57(1):190-3. doi: 10.1128/aem.57.1.190-193.1991.
A study was conducted to relate the properties of Enterobacter, Pseudomonas, Bacillus, Achromobacter, Flavobacterium, and Arthrobacter strains to their transport with water moving through soil. The bacteria differed markedly in their extent of transport; their hydrophobicity, as measured by adherence to n-octane and by hydrophobic-interaction chromatography; and their net surface electrostatic charge, as determined by electrostatic interaction chromatography and by measurements of the zeta potential. Transport of the 19 strains through Kendaia loam or their retention by this soil was not correlated with hydrophobicities or net surface charges of the cells or the presence of capsules. Among 10 strains tested, the presence of flagella was also not correlated with transport. Retention was statistically related to cell size, with bacteria shorter than 1.0 mum usually showing higher percentages of cells being transported through the soil. We suggest that more than one characteristic of bacterial cells determines whether the organisms are transported through soil with moving water.
一项研究旨在将肠杆菌、假单胞菌、芽孢杆菌、无色杆菌、黄杆菌和节杆菌菌株的特性与其在土壤中随水移动的迁移能力联系起来。这些细菌在迁移能力、疏水性（通过与正辛烷的粘附和疏水相互作用色谱法测量）以及净表面静电荷（通过静电相互作用色谱法和测量 ζ 电位确定）方面差异显著。19 株细菌在肯代亚壤土中的迁移或在该土壤中的保留与细胞的疏水性或净表面电荷或荚膜的存在均无相关性。在测试的 10 株菌中，鞭毛的存在也与迁移无关。保留与细胞大小呈统计学相关，通常小于 1.0 μm 的细菌中，通过土壤迁移的细胞百分比更高。我们认为，细菌细胞的不止一个特征决定了这些生物体是否随水流在土壤中迁移。
