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Structural interaction between GFP-labeled diazotrophic endophytic bacterium Herbaspirillum seropedicae RAM10 and pineapple plantlets 'Vitória' BJM
Baldotto,Lílian Estrela Borges; Olivares,Fábio Lopes; Bressan-Smith,Ricardo.
The events involved in the structural interaction between the diazotrophic endophytic bacterium Herbaspirillum seropedicae, strain RAM10, labeled with green fluorescent protein, and pineapple plantlets 'Vitória' were evaluated by means of bright-field and fluorescence microscopy, combined with scanning electron microscopy for 28 days after inoculation. After 6 hours of inoculation, H. seropedicae was already adhered to the roots, colonizing mainly root hair surface and bases, followed by epidermal cell wall junctions. Bacteria adherence in the initial periods occurred mainly in the form of solitary cells and small aggregates with pleomorphic cells. Bacteria infection of root tissue occurred through the cavities caused by the disruption of epidermal cells...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Ananas comosus; Plant-growth promoting bacteria; Microscopy.
Ano: 2011 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1517-83822011000100015
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Efficient inoculation of diazotrophic bacteria into sugarcane by the drip irrigation system PAB
Simões,Welson Lima; Oliveira,Anderson Ramos de; Souza,Moises Alves de; Reis,Verônica Massena; Ivan Fernandes-Júnior,Paulo.
Abstract: The objective of this work was to assess the efficiency of the inoculation of a diazotrophic bacterial consortium by the drip irrigation system into sugarcane (Saccharum spp.), in the Brazilian semiarid region. The evaluated treatments were: standard inoculation by submersion; one or two inoculations by drip irrigation; nitrogen (urea) applied by fertigation; and negative controls, without inoculation or nitrogen fertilization. Leaf gas exchanges and plant growth and yield were assessed. Inoculation by irrigation is efficient for all variables, and double inoculation by the drip irrigation system stands out, increasing stem yield in 16% when compared with the negative control, without differing from the treatment with nitrogen fertilizer.
Tipo: Info:eu-repo/semantics/article Palavras-chave: Biological nitrogen fixation; Brazilian semiarid region; Inoculant; Plant-growth promoting bacteria.
Ano: 2019 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-204X2019000103304
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