Ectomycorrhizae
Mostrando 1-12 de 13 artigos, teses e dissertações.
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1. Characterization of Ectomycorrhizal species through molecular biology tools and morphotyping
ABSTRACT: Mycorrhizae are mutualistic associations between fungi and plant roots. These symbiotic associations are abundant and occur in 75 to 80 % of plants. Ectomycorrhizal fungi are very important in ecosystems, because their mutualistic association with plants of different species helps nutrients and water absorption, as well as protection of the host pl
Sci. agric. (Piracicaba, Braz.). Publicado em: 2018-05
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2. Molecular approach to characterize ectomycorrhizae fungi from Mediterranean pine stands in Portugal
Stone pine (Pinus pinea L.), like other conifers, forms ectomycorrhizas (ECM), which have beneficial impact on plant growth in natural environments and forest ecosystems. An in vitro co-culture of stone pine microshoots with pure mycelia of isolated ECM sporocarps was used to overcome the root growth cessation not only in vitro but also to improve root devel
Braz. J. Microbiol.. Publicado em: 16/08/2013
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3. The role of mycorrhization helper bacteria in the establishment and action of ectomycorrhizae associations
More than 95 % short roots of most terrestrial plants are colonized by mycorrhizal fungi as soon as they emerge in the upper soil profiles. The establishment of mycorrhizal association involves profound morphological and physiological changes in root and fungus. It is affected by other rhizospheric microorganisms, specifically by the bacteria. Bacteria may h
Brazilian Journal of Microbiology. Publicado em: 2010-12
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4. Óleo essencial de eucalipto como bioestimulador da micorrização e do estabelecimento de mudas de eucalipto e sibipiruna em solo contaminado com cobre / Essential oil of eucalyptus as biostimulator of mycorrhiza and the eucalyptus and sibipiruna tree establishment in soil contaminated with copper
Ectomycorrhizal fungi (fECM) combined with the plant root system improve the absorption of water and nutrients, providing great plant growth, especially in environments with nutritional deficiency or degraded. Due to the fECM and plants live in mutualistic association, allows the fungal symbionts to be benefit, or at least tolerate, the secondary metabolites
Publicado em: 2010
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5. Fungos ectomicorrízicos em áreas de Mata Atlântica do Nordeste do Brasil
Ectomycorrhizal associations are poorly known from tropical lowlands of South America. Recent field trips to the reserve Parque Estadual das Dunas in Natal, in Rio Grande do Norte state, Brazil, revealed a undocumented community of ectomycorrhizal fungi. This type of Mycorrhizal association is frequently in the north hemisphere in temperate and boreal forest
Publicado em: 2009
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6. Ecological and evolutionary significance of mycorrhizal symbioses in vascular plants (A Review)
Mycorrhizae, the symbioses between fungi and plant roots, are nearly universal in terrestrial plants and can be classified into two major types: endomycorrhizae and ectomycorrhizae. About four-fifths of all land plants form endomycorrhizae, whereas several groups of trees and shrubs, notably Pinaceae, some Cupressaceae, Fagaceae, Betulaceae, Salicaceae, Dipt
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7. Eucalypt NADP-Dependent Isocitrate Dehydrogenase1 : cDNA Cloning and Expression in Ectomycorrhizae
NADP-dependent isocitrate dehydrogenase (NADP-ICDH) activity is increased in roots of Eucalyptus globulus subsp. bicostata ex Maiden Kirkp. during colonization by the ectomycorrhizal fungus Pisolithus tinctorius Coker and Couch. To investigate the regulation of the enzyme expression, a cDNA (EgIcdh) encoding the NADP-ICDH was isolated from a cDNA libra
American Society of Plant Physiologists.
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8. Use of Gentamicin in Axenic Culturing of Ectomycorrhizal Plants
Gentamicin is inhibitory to bacteria associated with Pinus ectomycorrhizae, but does not appear to affect the growth and metabolic activity of the fungus or root.
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9. Ectomycorrhizal Specificity Patterns in a Mixed Pinus contorta and Picea engelmannii Forest in Yellowstone National Park
We used molecular genetic methods to test two hypotheses, (i) that host plant specificity among ectomycorrhizal fungi would be common in a closed-canopy, mixed Pinus contorta-Picea engelmannii forest in Yellowstone National Park and (ii) that specificity would be more common in the early successional tree species, P. contorta, than in the invader, P. engelma
American Society for Microbiology.
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10. Independent, specialized invasions of ectomycorrhizal mutualism by two nonphotosynthetic orchids
We have investigated the mycorrhizal associations of two nonphotosynthetic orchids from distant tribes within the Orchidaceae. The two orchids were found to associate exclusively with two distinct clades of ectomycorrhizal basidiomycetous fungi over wide geographic ranges. Yet both orchids retained the internal mycorrhizal structure typical of photosynthetic
The National Academy of Sciences of the USA.
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11. 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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12. Biosynthesis of Indole-3-Acetic Acid by the Pine Ectomycorrhizal Fungus Pisolithus tinctorius
Previous work has indicated that anatomical and morphological changes (stunting and dichotomy) in roots of various conifers may be influenced by plant-growth-regulating substances secreted by mycorrhizae. Indole-3-acetic acid (IAA) has been tentatively identified as a major auxin produced by some selected ectomycorrhizae. We report the isolation and detectio