黄瓜根际土壤细菌群落的16S rDNA-PCR-DGGE分析 |
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引用本文: | 赵柏霞 闫建芳 刘 秋 于基成 赵秀香. 黄瓜根际土壤细菌群落的16S rDNA-PCR-DGGE分析[J]. 中国蔬菜, 2015, 1(12): 33-37 |
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作者姓名: | 赵柏霞 闫建芳 刘 秋 于基成 赵秀香 |
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作者单位: | (;1. 大连市农业科学研究院,辽宁大连 116036;;2. 沈阳农业大学植物保护学院,辽宁沈阳 110161;;3. 大连民族大学生命科学学院,辽宁大连 116600) |
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基金项目: | 国家自然科学基金项目(31070005,21276047,31270057,31101477),中央高校基本科研业务费自主基金青年项目(DC13010309,DC12010103) |
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摘 要: | 采用PCR-DGGE技术分析了接种枯萎病菌后黄瓜根际土壤细菌群落的动态变化。对黄瓜种植前、接菌前、接菌后发病、接菌后未发病以及接种清水(对照)共5份土壤样品直接提取其总DNA,用F338-GC/R518引物扩增16Sr DNA基因的V3可变区,结合DGGE电泳条带分析样品的细菌群落组成及变化趋势。结果显示,接种枯萎病菌后,会引起黄瓜根际土壤中细菌数量及种类发生较大的变化,其中,接种枯萎病菌后Rhodococcus phenolicus(E1)、Clostridiumsp.(E3、E6)以及3种未培养细菌(E2、E4、E5)数量增加,另外2种未培养细菌(A1、A2)数量减少。
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关 键 词: | 根际微生物 PCR-DGGE 枯萎病菌 细菌群落 |
Analysis of the Bacterial Communities in Rhizosphere Soil of Cucumber Using 16S rDNA -PCR- DGGE |
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Affiliation: | (;1.Dalian City Academy of Agricultural Sciences, Dalian 116036, Liaoning,China;;2.College of Plant Protection,Shenyang Agricultural University, Shenyang 110161, Liaoning,China;;3. College of Life Science, Dalian Nationalities University, Dalian 116600, Liaoning,China) |
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Abstract: | 16S rDNA-PCR-DGGE was used to analyze the bacterial community dynamic changes in rhizosphere soil infected by cucumber Fusarium wilt. There are 5 rhizosphere soil samples, including pre-planting soil, pre-inoculation soil, diseased cucumber and healthy cucumber after inoculation, not inoculated as the control. Total DNA was directly extracted and amplified with F338-GC and R518 primers targeting the 16S rDNAV3. The amplified were analyzed by DGGE analysis. The result revealed that there was a high diversity of bacterial community compositions among different tested soil samples. Fusarium caused a great bacterial species and number changes in rhizosphere soil, of which Rhodococcus phenolicus, Clostridium sp. and 3 uncultured bacteria increased, another 2 uncultured bacteria reduced after inoculation. |
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Keywords: | Rhizosphere microbe PCR-DGGE Fusarium oxysporum Bacterial communities |
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