2007
DOI: 10.1590/s0100-06832007000500009
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Formação de ectomicorrizas por monocários e dicários de Pisolithus sp. e interações nutricionais em Eucalyptus grandis

Abstract: RESUMOA germinação de basidiósporos de Pisolithus spp. dá origem a monocários, caracterizados por possuírem um único núcleo haplóide por célula. No campo, o eucalipto associa-se a micélios dicarióticos de Pisolithus spp., não havendo relatos sobre a capacidade dos monocários em estabelecer a associação ectomicorrízica com a planta hospedeira nessas condições. Embora os monocários de Pisolithus sp. sejam capazes de formar a associação ectomicorrízica in vitro, nada se sabe sobre a capacidade dessas estirpes em … Show more

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Cited by 7 publications
(14 citation statements)
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“…The main morphological features of the ectomycorrhizas formed by the monokaryotic strains indicated that these were typical of angiosperm ectomycorrhizas, containing a hyphal sheath or mantle around the roots and a Hartig net limited to the intercellular spaces of the root epidermis (BRUNDRETT et al, 1996;SILVA et al, 2007). Although no relationship could be established between mantle thickness and isolate aggressiveness (BURGESS et al, 1994), the presence of the mantle and the Hartig net indicated that all isolates tested were compatible with the host plant.…”
Section: Discussionmentioning
confidence: 99%
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“…The main morphological features of the ectomycorrhizas formed by the monokaryotic strains indicated that these were typical of angiosperm ectomycorrhizas, containing a hyphal sheath or mantle around the roots and a Hartig net limited to the intercellular spaces of the root epidermis (BRUNDRETT et al, 1996;SILVA et al, 2007). Although no relationship could be established between mantle thickness and isolate aggressiveness (BURGESS et al, 1994), the presence of the mantle and the Hartig net indicated that all isolates tested were compatible with the host plant.…”
Section: Discussionmentioning
confidence: 99%
“…In Brazil, the importance of Pisolithus is derived from its association with Eucalyptus L'Hér., an exotic genus widely cultivated for timber, charcoal, and cellulose pulp for the paper industry. The benefits of ectomycorrhizas to the host plant include improved plant growth (BARROS et al, 1978;BURGESS et al, 1994;SILVA et al, 2007), increased phosphorus (P) uptake (BURGESS et al, 1993;TRAJANO et al, 2001;SILVA et al, 2007), higher tolerance to temperature stress (MARX and BRYAN, 1971) and soilborne pathogens (MARX, 1972;CHAKRAVARTY and UNESTAM, 1987), among other effects. For a long time, this has raised the interest of researchers in the functioning of the symbiosis aiming at an efficient and sustainable management of ectomycorrhizas in the field and forest nurseries.…”
Section: Introductionmentioning
confidence: 99%
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“…Resultados sobre o aumento expressivo dos teores foliares de Ca e Mg em plantas inoculadas com isolados fúngicos foram verificados por Silva et al (2007b) em Eucalytus grandis. No caso da seringueira, tal fato não ocorreu.…”
Section: áReasunclassified
“…Thus, ectomycorrhizal fungi (EMF) inoculation in eucalypts seedlings might enhance plant productivity. Among EMF used in commercial plantings in Southeastern Brazil, Pisolithus is one with the most occurrence, and several researches have evinced isolate capacity of the genus to promote growth of inoculated seedlings (ALVES et al, 2001;SILVA et al, 2007;SOUZA et al, 2008).…”
Section: Introductionmentioning
confidence: 99%