Data/hora: 22/06/2024 13:49:56

Biblioteca(s): | Embrapa Milho e Sorgo.
Tipo da produção científica: | Artigo em Periódico Indexado
Circulação/Nível: | B - 1
Data corrente: | 28/10/2015
Data da última atualização: | 14/04/2021
Autoria: | GOMES, E. A.; OLIVEIRA-PAIVA, C. A.; LANA, U. G. P.; NODA, R. W.; MARRIEL, I. E.; SOUZA, F. A. de.
Afiliação: | ELIANE APARECIDA GOMES, CNPMS; CHRISTIANE ABREU DE OLIVEIRA PAIVA, CNPMS; UBIRACI GOMES DE PAULA LANA, CNPMS; ROBERTO WILLIANS NODA, CNPMS; IVANILDO EVODIO MARRIEL, CNPMS; FRANCISCO ADRIANO DE SOUZA, CNPMS.
Título: | Arbuscular mycorrhizal fungal communities in the roots of maize lines contrasting for al tolerance grown in limed and non-limed Brazilian Oxisoil.
Ano de publicação: | 2015
Fonte/Imprenta: | Journal of Microbiology and Biotechnology, Seoul, v. 25, n. 7, p. 978-987, 2015.
DOI: | http://dx.doi.org/10.4014/jmb.1408.08002
Idioma: | Inglês
Conteúdo: | Aluminum (Al) toxicity is one of the greatest limitations to agriculture in acid soils, particularly in tropical regions. Arbuscular mycorrhizal fungi (AMF) can supply plants with nutrients and give protection against Al toxicity. The aim of this work was to evaluate the effects of soil liming (i.e., reducing Al saturation) on the AMF community composition and structure in the roots of maize lines contrasting for Al tolerance. To this end, we constructed four 18S rDNA cloning libraries from L3 (Al tolerant) and L22 (Al sensitive) maize lines grown in limed and non-limed soils. A total of 790 clones were sequenced, 69% belonging to the Glomeromycota phylum. The remaining sequences were from Ascomycota, which were more prominent in the limed soil, mainly in the L3 line. The most abundant AM fungal clones were related to the family Glomeraceae represented by the genera uncultured Glomus followed by Rhizophagus and Funneliformis. However, the most abundant operational taxonomic units with 27% of the Glomeromycota clones was affiliated to genus Racocetra. This genus was present in all the four libraries, but it was predominant in the non-limed soils, suggesting that Racocetra is tolerant to Al toxicity. Similarly, Acaulospora and Rhizophagus were also present mostly in both lines in non-limed soils. The community richness of AMF in the non-limed soils was higher than the limed soil for both lines. The results suggest that the soil Al saturation was the parameter that mostly influences the AMF species composition in the soils in this study.
Thesagro: | Fungo; Micorriza; Milho.
Categoria do assunto: | --
Registro original: | Embrapa Milho e Sorgo (CNPMS)
Exemplares: | CNPMS - (26726-1) - UPC - AP - DD -  -  -  - DIS