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撂荒地亚硝酸还原酶基因nirK和nirS丰度动态

呼和, 陈先江, 程云湘

呼和, 陈先江, 程云湘. 撂荒地亚硝酸还原酶基因nirK和nirS丰度动态[J]. 草业科学, 2016, 10(7): 1253-1259. DOI: 10.11829/j.issn.1001-0629.2015-0751
引用本文: 呼和, 陈先江, 程云湘. 撂荒地亚硝酸还原酶基因nirK和nirS丰度动态[J]. 草业科学, 2016, 10(7): 1253-1259. DOI: 10.11829/j.issn.1001-0629.2015-0751
Huhe, Xian-Jiang Chen, Yun-Xiang Cheng. The dynamics for abundance of nitrite reductase genes nirK and nirS in abandoned land[J]. Pratacultural Science, 2016, 10(7): 1253-1259. DOI: 10.11829/j.issn.1001-0629.2015-0751
Citation: Huhe, Xian-Jiang Chen, Yun-Xiang Cheng. The dynamics for abundance of nitrite reductase genes nirK and nirS in abandoned land[J]. Pratacultural Science, 2016, 10(7): 1253-1259. DOI: 10.11829/j.issn.1001-0629.2015-0751

撂荒地亚硝酸还原酶基因nirK和nirS丰度动态

基金项目: 

草地农业生态系统国家重点实验室(兰州大学)开放基金项目(SKLGAE201407)

国家自然科学基金项目(31460029、31402118)

甘肃省农业科学院农业科技创新专项(2013GAAS04-04)

摘要: 使用荧光定量PCR法测定亚硝酸还原酶基因(nirK和nirS)遗传特异性片段,研究了草原撂荒地土壤反硝化微生物丰度随着撂荒时间的变化。结果表明,轻度放牧草原和3种不同撂荒时间地的土壤中nirK基因型反硝化微生物丰度都显著高于nirS基因型反硝化微生物丰度(P<0.05)。土壤nirK及nirS基因型反硝化微生物丰度撂荒地和轻度放牧地之间均有显著差异(P<0.05),但3种撂荒地均未发生显著变化(P>0.05)。此外,这两种基因型反硝化微生物丰度之间有极显著线性负相关关系(P<0.001)。以上结果说明,nirK和nirS基因型反硝化微生物对环境因子的响应有差异。

 

English

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  • 收稿日期:  2015-12-30
  • 发布日期:  2016-07-19

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