Effect of environmental factors on nitrifying bacteria isolated from the rhizosphere of Setaria italica (L.) Beauv

被引：0
|
作者：
Bhaskar, KV [1 ]
Charyulu, PBBN [1 ]
机构：
[1] Sri Krishnadevaraya Univ, Dept Microbiol, Anantapur 515003, Andhra Pradesh, India
来源：
AFRICAN JOURNAL OF BIOTECHNOLOGY | 2005年 / 4卷 / 10期
关键词：
nitrifying bacteria; temperature; pH; neem oil; inhibitors; Setaria italica;
D O I：
暂无
中图分类号：
Q81 [生物工程学（生物技术）]; Q93 [微生物学];
学科分类号：
071005 ; 0836 ; 090102 ; 100705 ;
摘要：
Nitrification is a biological process in which nitrifying bacteria oxidise ammonia to nitrate. The process is sensitive to environmental factors such as temperature, dissolved oxygen concentration, pH, and available substrate. In the present study, the effects of pH, temperature and neem oil on Nitrosomonas and Nitrobacter isolated from the rhizosphere of foxtail millet, Setaria italica, were examined. The optimum temperature for the growth of both nitrifying bacteria is 30 degrees C. Nitrobacter is less tolerant to low temperature than Nitrosomonas but the optimum pH for both bacteria is 8.0. Neem oil, when applied at 10 ppm, showed maximum inhibitory effect on growth of both bacteria.
引用
收藏
页码：1145 / 1146
页数：2
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