Pentachlorophenol-decomposing and PCP-tolerant bacteria in field soil treated with PCP
Pentachlorophenol-decomposing and PCP-tolerant bacteria in field soil treated with PCP
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经五氯苯酚处理的田间土壤中五氯苯酚分解和耐五氯苯酚的细菌
DOI：
10.1016/0038-0717(77)90044-x
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发表时间：
1977
影响因子：
9.7
通讯作者：
I. Watanabe
中科院分区：
文献类型：
--
作者：
I. Watanabe
对连续3年施用五氯苯酚（PCP）的农田土壤样品进行了分析，以了解土壤微生物种群的变化，特别是PCP分解微生物和耐PCP细菌的变化。在首次施用五氯苯酚后的6周内，分解五氯苯酚的微生物数量增加了约3个数量级;第二年春天仍然观察到这一数量增加。在接受五氯苯酚3年的土壤中，分解五氯苯酚的微生物数量达到105· g− 1土壤或更多，而在没有五氯苯酚的土壤中，这一数量为102· g−1。接受五氯苯酚的土壤中没有富集四氯苯酚分解微生物。五氯苯酚富集的微生物可能是细菌。在1972年和1974年，耐五氯苯酚细菌的数量在施用五氯苯酚后立即增加，并持续增加2周，然后下降。然而，1973年的数据却没有显示出这种下降。耐五氯苯酚和耐结晶紫（革兰氏阴性）细菌的数量相关性相当好，除了在二氯苯酚应用后2周（当耐五氯苯酚的细菌更多）。
Soil samples from field plots that had received annual applications of pentachlorophenol (PCP) for 3 consecutive years were analyzed each year for changes in microbial populations, particularly in PCP-decomposing microorganisms and PCP-tolerant bacteria. Within 6 weeks after an initial application of PCP, PCP-decomposing microorganisms increased by about 3 orders of magnitude; this increased population was still observed the following spring. The number of PCP-decomposing microorganisms in the soils that received PCP for 3 yr reached 105· g−1soil or more, while that in soils without PCP was 102· g−1. The soils that received PCP were not enriched with tetrachlorophenoldecomposing microorganisms. The microbes enriched by PCP may have been bacterial in nature. In 1972 and 1974, the number of PCP-tolerant bacteria increased immediately after PCP application and continued to increase for 2 weeks, then declined. The 1973 data, however, showed no such decline. The number of PCP-tolerant and of crystal violet-tolerant (Gram-negative) bacteria correlated fairly well except at 2 weeks after PCP application (when PCP-tolerant bacteria were more numerous).