期刊
SOIL BIOLOGY & BIOCHEMISTRY
卷 86, 期 -, 页码 77-86出版社
PERGAMON-ELSEVIER SCIENCE LTD
DOI: 10.1016/j.soilbio.2015.02.021
关键词
Pineapple-banana rotation; Maize-banana rotation; Soil bacterial and fungal communities; Deep pyrosequencing; Fusarium oxysporum f. sp cubense race 4
类别
资金
- National Key Basic Research Program of China [2015CB150506]
- National Natural Science Foundation of China [31372142]
- Department of Science and Technology of Hainan Province [ZDZX2013023]
- Priority Academic Program Development of the Jiangsu Higher Education Institutions (PAPD)
- 111 project [B12009]
- Agricultural Ministry of China [201103004]
- Innovative Research Team Development Plan of the Ministry of Education of China [IRT1256]
Continuous cropping with banana results in an enrichment of Fusarium oxysporum f. sp. cubense race 4 (FOC) in soil, causing the soil-borne disease Fusarium wilt. Crop rotation has been an effective method of controlling various soil-borne diseases. However, no information is currently available concerning variations in soil microbial community structure in banana crop rotations. Thus, the influence of two-year crop rotation systems of pineapple banana and maize banana on the population density of FOC and soil microbial community structure was investigated to identify which rotation system is more effective in FOC suppression and differences in microbial community composition among different rotations. Bacterial and fungal communities were interrogated by pyrosequencing of the 16 S RNA gene and the internal transcribed spacer (ITS) region. The pineapple banana rotation was more effective than maize - banana in reducing FOC abundances and suppressing Fusarium wilt disease incidence. Allelopathic effects of pineapple root exudates on FOC were not observed. Greater fungal community variations than bacterial were identified between the two rotation systems, suggesting that fungal communities may play a more important role in regulating FOC abundances. Furthermore, in the pineapple banana rotation, Acidobacteria, Planctomycetes, Chloroflexi phyla, Gp1, Gp2 and Burkholderia bacterial genera increased while the fungal phyla Basidiomycota, (esp. Gymnopilus) increased and Sordariomycetes decreased. Such changes may be important microbial factors in the decrease in FOC. (C) 2015 Published by Elsevier Ltd.
作者
我是这篇论文的作者
点击您的名字以认领此论文并将其添加到您的个人资料中。
推荐
暂无数据