Ectomycorrhiza
Mostrando 1-9 de 9 artigos, teses e dissertações.
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1. Presença e características de RNAs mensageiros nos basidiósporos de Pisolithus microcarpus / Presence and characteristics of messanger RNA in the basidiospores of Pisolithus microcarpus
As baixas percentagens de germinação dos basidiósporos do fungo ectomicorrízico Pisolithus microcarpus dificultam a obtenção de estirpes monocarióticas, material para estudos de genética quantitativa da associação micorrízica, inviabilizam a utilização de esporos em experimentos de mutagênese visando à identificação de genes importantes para
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 18/08/2010
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2. FUNGOS ECTOMICORRÍZICOS DO SUL DO BRASIL, COM ÊNFASE NO HÁBITO HIPÓGEO / ECTOMYCORRHIZAL FUNGI FROM SOUTHERN BRAZIL, WITH EMPHASIS ON THE HYPOGEOUS HABIT
Os fungos representam um grupo de organismos extremamente importante nos ecossistemas terrestres. Entre as muitas funções por eles desempenhadas está a associação mutualística com as raízes dos vegetais, formando diferentes tipos de micorrizas. A maioria dos estudos realizados até o momento está principalmente focada nos fungos ectomicorrízicos ep�
Publicado em: 2010
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3. Ectomicorriza in vitro entre Hydnangium sp. e Eucalyptus grandis e análises de seqüências de genes de Hydnangium sp. / Ectomycorrhiza in vitro between Hydnangium sp. and Eucalyptus grandis and sequences analysis of Hydnangium sp.
Hydnangium sp. é um fungo basidiomiceto capaz de formar ectomicorriza com espécies de Eucalyptus. Os sistemas de micorrização in vitro vêm sendo largamente utilizados para estudar interações micorrízicas, tornando-se um sistema simples e reproduzível para as análises de expressão de genes envolvidos na interação. Neste trabalho, a técnica de mi
Publicado em: 2009
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4. Identificação de genes expressos durante a fase pré-simbiótica da associação ectomicorrízica entre Hydnangium sp. e Eucalyptus grandis e transformação de fungos ectomicorrízicos / Identification of genes expressed during the pre-symbiotic interaction in the Hydnangium sp.-Eucalyptus grandis ectomycorrhizal association and transformation of ectomycorrhizal fungi
Gene expression in the ectomycorrhizal fungus Hydnangium sp. during the pre-symbiotic interaction was evaluated using an in vitro mycorrhization technique aiming at constructing a suppressive subtractive cDNA library. The fungus was cultivated in the presence of Eucalyptus grandis roots, with no direct physical contact between both organisms. Genes that code
Publicado em: 2008
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5. Efeito do cobre sobre fungos micorrÃzicos e trevo vermelho (Trifolium pratense L.)
The effects of copper on arbuscular mycorrhizal (AMF) and ectomycorrhizal fungi (EMF) and on the symbiosis between AMF and plants of Trifolium pratense L were evaluated. Species diversity, most probable number (MPN) of propagules and production of glomalin by AMF were estimated in a copper mining area (a- waste product area; b- interface between the waste pr
Publicado em: 2006
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6. Ribosomal DNA internal transcribed spacers to estimate the proportion of Pisolithus tinctorius and Eucalyptus RNAs in ectomycorrhiza.
Ectomycorrhiza is a complex association of several types of plant and fungal cells. Differentiation of symbiotic structures is correlated with large changes in mRNA synthesis, leading to novel protein patterns. Quantification of up- and down-regulated specific transcripts is complicated by the intermingling of root and hyphal components. Determination of ste
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7. Carbohydrate and Amino Acid Metabolism in the Eucalyptus globulus-Pisolithus tinctorius Ectomycorrhiza during Glucose Utilization1
The metabolism of [1-13C]glucose in Pisolithus tinctorius cv Coker & Couch, in uninoculated seedlings of Eucalyptus globulus bicostata ex Maiden cv Kirkp., and in the E. globulus-P. tinctorius ectomycorrhiza was studied using nuclear magnetic resonance spectroscopy. In roots of uninoculated seedlings, the 13C label was mainly incorporated into sucrose
American Society of Plant Physiologists.
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8. Identification of Genes Differentially Expressed in Extraradical Mycelium and Ectomycorrhizal Roots during Paxillus involutus-Betula pendula Ectomycorrhizal Symbiosis
The development of ectomycorrhizal symbiosis leads to drastic changes in gene expression in both partners. However, little is known about the spatial regulation of symbiosis-regulated genes. Using cDNA array profiling, we compared the levels of expression of fungal genes corresponding to approximately 1,200 expressed sequenced tags in the ectomycorrhizal roo
American Society for Microbiology.
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9. No Significant Contribution of Arbuscular Mycorrhizal Fungi to Transfer of Radiocesium from Soil to Plants
The diffuse pollution by fission and activation products following nuclear accidents and weapons testing is of major public concern. Among the nuclides that pose a serious risk if they enter the human food chain are the cesium isotopes 137Cs and 134Cs (with half-lives of 30 and 2 years, respectively). The biogeochemical cycling of these isotopes in forest ec
American Society for Microbiology.