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https://locus.ufv.br//handle/123456789/12524
Tipo: | Artigo |
Título: | Calcium oxalate erystals in eucalypt ectomycorrhizae: Morphochemical characterization |
Autor(es): | Pylro, Victor Satler Freitas, André Luiz Moreira de Otoni, Wagner Campos Silva, Ivo Ribeiro da Borges, Arnaldo Chaer Costa, Maurı́cio Dutra |
Abstract: | Ectomycorrhizal fungi are ubiquitous in forest ecosystems, benefitting plants principally by increasing the uptake of water and nutrients such as calcium from the soil. Previous work has demonstrated accumulation of crystallites in eucalypt ectomycorrhizas, but detailed morphological and chemical characterization of these crystals has not been performed. In this work, cross sections of acetic acid-treated and cleared ectomycorrhizal fragments were visualized by polarized light microscopy to evaluate the location of crystals within cortical root cells. Ectomycorrhizal sections were also observed by scanning electron microscopy (SEM) coupled with energy dispersive x-ray (EDS) microprobe analysis. The predominant forms of crystals were crystal sand (granules) and concretions. Calcium, carbon and oxygen were detected by EDS as constituent elements and similar elemental profiles were observed between both crystal morphologies. All analyzed crystalline structures were characterized as calcium oxalate crystals. This is the first report of the stoichiometry and morphology of crystals occurring in eucalypt ectomycorrhizas in tropical soils. The data corroborates the role of ectomycorrhizae in the uptake and accumulation of calcium in the form of calcium oxalate crystals in hybrid eucalypt plants. |
Palavras-chave: | Calcium oxalate Eucalypt ectomycorrhizae |
Editor: | Plos One |
Tipo de Acesso: | Open Access |
URI: | https://doi.org/10.1371/journal.pone.0067685 http://www.locus.ufv.br/handle/123456789/12524 |
Data do documento: | 2-Jul-2013 |
Aparece nas coleções: | Artigos |
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journal.pone.0067685.PDF | texto completo | 14,07 MB | Adobe PDF | Visualizar/Abrir |
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