Effects of Beauveria bassiana and acephate on enzyme activities and microbial diversity in paddy soil

被引:5
作者
Du, W. [1 ]
Zhou, J. [1 ]
Jiang, P. [1 ]
Yang, T. [1 ]
Bu, Y. Q. [2 ]
Liu, C. H. [3 ]
Dai, C. C. [1 ]
机构
[1] Nanjing Normal Univ, Coll Life Sci, Jiangsu Key Lab Microbes & Funct Genom, Nanjing, Jiangsu, Peoples R China
[2] Nanjing Inst Environm Sci, Nanjing, Jiangsu, Peoples R China
[3] Nanjing Univ, Coll Life Sci, Nanjing 210008, Jiangsu, Peoples R China
关键词
DGGE; ecological safety; Chilo suppressalis; Shannon index; biological control;
D O I
10.17221/447/2013-PSE
中图分类号
S3 [农学(农艺学)];
学科分类号
0901 ;
摘要
To investigate the ecological safety of Beauveria bassiana in soil, we evaluated the effects of different concentrations of B. bassiana spores suspensions and acephate on paddy soil microbial flora and enzyme activities in a potted trial. Results showed that B. bassiana can increase the quantity of bacteria and fungi on day 10 and 30, while it showed inhibition on actinomycetes growth on day 10. However, acephate reduced the quantity of bacteria, fungi, and actinomycetes in soil. Investigation of enzyme activities revealed that invertase activity declined during prophase, while urease activity decreased later in B. bassiana treatment groups, and there were no significant changes in alkaline phosphatase or dehydrogenase activity. Acephate showed higher inhibition rates of enzymes. B. bassiana treatment at lower concentrations showed a higher yield. Overall, compared with the acephate, B. bassiana is an effective, environmentally friendly microbial pesticide in this system.
引用
收藏
页码:562 / 567
页数:6
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[21]   Effects of single and mixed species forest ecosystems on diversity and function of soil microbial community in subtropical China [J].
Jiang, Yumei ;
Chen, Chengrong ;
Xu, Zhihong ;
Liu, Yuanqiu .
JOURNAL OF SOILS AND SEDIMENTS, 2012, 12 (02) :228-240
[22]   Effects of single and mixed species forest ecosystems on diversity and function of soil microbial community in subtropical China [J].
Yumei Jiang ;
Chengrong Chen ;
Zhihong Xu ;
Yuanqiu Liu .
Journal of Soils and Sediments, 2012, 12 :228-240
[23]   Effects of Elevated CO2 on Soil Microbial Activity and Bacterial Diversity in Pinus koraiensis Seedlings Fields in Changbai Mountain [J].
Xia, Jia .
2010 4TH INTERNATIONAL CONFERENCE ON BIOINFORMATICS AND BIOMEDICAL ENGINEERING (ICBBE 2010), 2010,
[24]   Differences in soil enzyme activities, microbial community structure and short-term nitrogen mineralisation resulting from farm management history and organic matter amendments [J].
Stark, Christine H. ;
Condron, Leo M. ;
O'Callaghan, Maureen ;
Stewart, Alison ;
Di, Hong J. .
SOIL BIOLOGY & BIOCHEMISTRY, 2008, 40 (06) :1352-1363