Structure of Fungal Communities in Sub-Irrigated Agricultural Soil from Cerrado Floodplains

Published Date

Diversity 2016, 8(2), 13; doi:10.3390/d8020013

Author

Elainy Cristina A. M. Oliveira ¹

, Acacio A. Navarrete ²

, Joenes M. Peluzio ³

, Waldesse P. de Oliveira Junior ³

, Alana de A. Valadares ⁴

, Siu M. Tsai ²

 and Paula B. de Morais ^5,* 

¹

Department of Agricultural Sciences and Technology, Universidade Federal do Tocantins, Rua Badejos, 69-Jd Sevilha, Campus Universitário, Gurupi 77410-530, TO, Brazil

²

Cell and Molecular Biology Laboratory, Center for Nuclear Energy in Agriculture, University of São Paulo, Avenida Centenario 303, Piracicaba 13400-970, Brazil

³

Biotechnology Laboratory, Universidade Federal do Tocantins, Quadra 109 Norte, Av. NS 15, ALCNO 14 s/n, Campus Universitário, Palmas 77001-090, TO, Brazil

⁴

Department of Environmental Technology and Water Resources, University of Brasília, Brasilia 70040-010, Brazil

⁵

Environmental Microbiology and Biotechnology Laboratory, Universidade Federal do Tocantins, Quadra 109 Norte, Av. NS 15, ALCNO 14 s/n, Campus Universitário, Palmas 77001-090, Brazil

^*

Author to whom correspondence should be addressed. 

Academic Editor: Raymon Shange

Received: 1 November 2015 / Revised: 4 April 2016 / Accepted: 16 May 2016 / Published: 19 May 2016

(This article belongs to the Special Issue Soil Microbes Diversity and Soil Function)

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Abstract 

This study aimed to evaluate the influence of soybean cultivation on the fungal community structure in a tropical floodplain area. Soil samples were collected from two different soybean cropland sites and a control area under native vegetation. The soil samples were collected at a depth of 0–10 cm soil during the off-season in July 2013. The genetic structure of the soil fungal microbial community was analyzed using the automated ribosomal intergenic spacer analysis (ARISA) technique. Among the 26 phylotypes with abundance levels higher than 1% detected in the control area, five were also detected in the area cultivated for five years, and none of them was shared between the control area and the area cultivated for eight years. Analysis of similarity (ANOSIM) revealed differences in fungal community structure between the control area and the soybean cropland sites, and also between the soybean cropland sites. ANOSIM results were confirmed by multivariate statistics, which additionally revealed a nutrient-dependent relation for the fungal community structure in agricultural soil managed for eight consecutive years. The results indicated that land use affects soil chemical properties and richness and structure of the soil fungal microbial community in a tropical floodplain agricultural area, and the effects became more evident to the extent that soil was cultivated for soybean for more time. View Full-Text

Keywords: land use change;  ARISA;  fungi;  tropical soil

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