the effect of tillage system and crop rotation on soil microbial diversity and composition in a subtropical acrisol耕作制度的影响和轮作对土壤微生物多样性和亚热带强淋溶土组成.pdf

Diversity 2012, 4, 375-395; doi:10.3390/d4040375 OPEN ACCESS diversity ISSN 1424-2818 /journal/diversity Article The Effect of Tillage System and Crop Rotation on Soil Microbial Diversity and Composition in a Subtropical Acrisol Patricia Dorr de Quadros 1,2,*, Kateryna Zhalnina 2, Austin Davis-Richardson 2, Jennie R. Fagen 2, 2 1 1 2 Jennifer Drew , Cimelio Bayer , Flavio A.O. Camargo and Eric W. Triplett 1 Department of Soil Science, Federal University of Rio Grande do Sul, Porto Alegre, Brazil; E-Mails: cimelio.bayer@ufrgs.br (C.B.); fcamargo@ufrgs.br (F.A.O.C.) 2 Department of Microbiology and Cell Science, Institute of Food and Agricultural Sciences, University of Florida, Gainesville, FL, USA; E-Mails: zhalnina@ (K.Z.), harekrishna@ (A.C.R.), jdrew@ (J.D.), ewt@ (E.W.T.) *Author to whom correspondence should be addressed; E-Mail: patriciaquadros@; Tel.: (352)-575-5731. Received: 29 August 2012; in revised form: 11 October 2012 / Accepted: 19 October 2012 / Published: 31 October 2012 Abstract: Agricultural management alters physical and chemical soil properties, which directly affects microbial life strategies and community composition. The microbial community drives important nutrient cycling processes that can influence soil quality, cropping productivity and environmental sustainability. In this research, a long-term