a molecular survey of the diversity of microbial communities in different amazonian agricultural model systems分子微生物群落的多样性在不同的调查亚马逊农业模型系统.pdfVIP

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a molecular survey of the diversity of microbial communities in different amazonian agricultural model systems分子微生物群落的多样性在不同的调查亚马逊农业模型系统.pdf

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a molecular survey of the diversity of microbial communities in different amazonian agricultural model systems分子微生物群落的多样性在不同的调查亚马逊农业模型系统

Diversity 2010, 2, 787-809; doi:10.3390/d2050787 OPEN ACCESS diversity ISSN 1424-2818 /journal/diversity Article A Molecular Survey of the Diversity of Microbial Communities in Different Amazonian Agricultural Model Systems Acácio A. Navarrete †, Fabiana S. Cannavan †, Rodrigo G. Taketani and Siu M. Tsai * Cell and Molecular Biology Laboratory, Centro de Energia Nuclear na Agricultura, Universidade de São Paulo, Av. Centenário-303, CEP. 13.416-000, Piracicaba, SP, Brazil; E-Mails: navarrete@cena.usp.br (A.A.N.); cannavan@cena.usp.br (F.S.C.); rgtaketani@cena.usp.br (R.G.T.) † These authors share first authorship. * Author to whom correspondence should be addressed; E-mail: tsai@cena.usp.br; Tel.: +1-55-19-429-4600 Fax: +1-55-19-429-4610. Received: 26 March 2010; in revised form: 11 May 2010 / Accepted: 12 May 2010 / Published: 19 May 2010 Abstract: The processes of land conversion and agricultural intensification are a significant cause of biodiversity loss, with consequent negative effects both on the environment and the sustainability of food production. The anthrosols associated with pre-Colombian settlements in the Amazonian region are examples of how anthropogenic activities may sustain the native populations against harsh tropical environments for human establishment, even without a previous intentionality of anthropic soil formation. In a case study (Model I—“Slash-and- Burn”) the community structures detected by automated ribosomal intergenic spacer analysis (ARISA) revealed that soil arc