Data/hora: 10/06/2024 18:30:50

Biblioteca(s): 	Embrapa Soja; Embrapa Suínos e Aves.	
Data corrente: 	09/07/2013	
Data da última atualização: 	02/10/2013	
Autoria: 	SOUZA, R. C.; CANTAO, M. E.; VASCONCELOS, A. T. R.; NOGUEIRA, M. A.; HUNGRIA, M.	
Afiliação: 	RENATA CAROLINI SOUZA, UEL; MAURICIO EGIDIO CANTAO, CNPSA; ANA TEREZA RIBEIRO VASCONCELOS, LNCC; MARCO ANTONIO NOGUEIRA, CNPSO; MARIANGELA HUNGRIA DA CUNHA, CNPSO.	
Título: 	Soil metagenomics reveals differences under conventional and no-tillage with crop rotation or succession.	
Ano de publicação: 	2013	
Fonte/Imprenta: 	Applied Soil Ecology, v. 72, p. 49-61, Oct. 2013.	
DOI: 	10.1016/j.apsoil.2013.05.021	
Idioma: 	Inglês	
Conteúdo: 	Soil conservation practices are critical for agricultural sustainability, and in this study the shotgunsequencing approach was used to investigate the effects on soil biodiversity of different soil- andcrop-management practices in a 13-year field trial in southern Brazil. Treatments consisted of conven-tional tillage (CT) with plowing and disking, or no-tillage (NT) with direct sowing into the residues ofprevious crops, in a crop succession [soybean (summer)/wheat (winter)] or rotation [soybean/maize(summer)/wheat/lupine/oat (winter)]. About 1 million reads per treatment revealed very high levels ofdiversity. The majority of the sequences were attributed to the Bacteria (54%), and 0.3% and 0.2% fittedinto Archaea and Eucarya domains, respectively; 46% showed no similarity with any known sequences.Major differences were associated with tillage and, to a lesser extent, with crop management. Statisticallysignificant higher abundances with CT encompassed microorganisms associated with residue decompo-sition, carbon and nitrogen cycling, and xenobiosis. Eucarya were also more abundant with CT, possiblyrelated to higher tolerance of environmental stresses. In contrast, NT showed higher abundances par-ticularly of nitrogen-fixing Rhizobiales and Archaea that inhabit environments rich in organic matter.	
Palavras-Chave: 	Solos.	
Categoria do assunto: 	--	
URL: 	http://ainfo.cnptia.embrapa.br/digital/bitstream/item/85755/1/soil.meta.pdf	
Registro original: 	Embrapa Suínos e Aves (CNPSA)	
Exemplares: 	CNPSO - (34508-1) - UPC - AP - DD -  -  -  - DIS
CNPSA - (19467-1) - UPC - AP - DD -  -  -  - DIS