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Rhizobial characterization in revegetated areas after bauxite mining BJM
Borges,Wardsson Lustrino; Prin,Yves; Ducousso,Marc; Le Roux,Christine; Faria,Sergio Miana de.
Abstract Little is known regarding how the increased diversity of nitrogen-fixing bacteria contributes to the productivity and diversity of plants in complex communities. However, some authors have shown that the presence of a diverse group of nodulating bacteria is required for different plant species to coexist. A better understanding of the plant symbiotic organism diversity role in natural ecosystems can be extremely useful to define recovery strategies of environments that were degraded by human activities. This study used ARDRA, BOX-PCR fingerprinting and sequencing of the 16S rDNA gene to assess the diversity of root nodule nitrogen-fixing bacteria in former bauxite mining areas that were replanted in 1981, 1985, 1993, 1998, 2004 and 2006 and in a...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Rhizobia; Rep-PCR; Cluster analysis; Nodules; Mining.
Ano: 2016 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1517-83822016000200314
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Nitrogen-fixing bacteria and arbuscular mycorrhizal fungi in Piptadenia gonoacantha (Mart.) Macbr. BJM
Oliveira Júnior,Joel Quintino de; Jesus,Ederson da Conceição; Lisboa,Francy Junio; Berbara,Ricardo Luis Louro; Faria,Sergio Miana de.
Abstract The family Leguminosae comprises approximately 20,000 species that mostly form symbioses with arbuscular mycorrhizal fungi (AMF) and nitrogen-fixing bacteria (NFB). This study is aimed at investigating and confirming the dependence on nodulation and biological nitrogen fixation in the specie Piptadenia gonoacantha (Mart.) Macbr., which belongs to the Piptadenia group. Two consecutive experiments were performed in a greenhouse. The experiments were fully randomized with six replicates and a factorial scheme. For the treatments, the two AMF species and three NFB strains were combined to nodulate P. gonoacantha in addition to the control treatments. The results indicate this species’ capacity for nodulation without the AMF; however, the AMF + NFB...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Synergy; Nodulation; Biological nitrogen fixation; “Pau-jacaré”.
Ano: 2017 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1517-83822017000100095
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