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1.
Int J Med Mushrooms ; 26(3): 15-26, 2024.
Artigo em Inglês | MEDLINE | ID: mdl-38505900

RESUMO

Currently, in many Asian and European countries, a group of mushrooms has been distinguished, which, due to their medicinal and/or dietary properties, are referred to as medicinal mushrooms. Hypsizygus marmoreus is a species valued for its proven nutritional and healing properties. In the scientific literature available so far, mainly from Asian countries, it is possible to find research on the therapeutic effect of H. marmoreus. Biologically active substances, their presence, and in particular, their level in this species have not been the subject of extensive research. The aim of the present review is to describe and summarize the dietary and therapeutic potential of this increasingly popular species among consumers in European countries. Because H. marmoreus is a species with known dietary and health-promoting properties, this species of wood fungi could be commonly obtained from cultivation in European countries.


Assuntos
Agaricales , Basidiomycota , Fagus , Ásia
2.
Sci Rep ; 13(1): 12972, 2023 08 10.
Artigo em Inglês | MEDLINE | ID: mdl-37563203

RESUMO

Pine wood (PW) and beech wood (BW) are the most used wood in furniture and other applications owing to their unique characteristics and low machining cost. However, their biodegradability and varied moisture content limit their wider use and durability. Therefore, in this study, nanotechnology was used as a novel eco-friendly approach to enhance the durability, antimicrobial properties, and color of wood. Selenium nanoparticles (Se-NPs) were prepared in spherical shape at varied concentrations (25 and 50 mM) using an eco-friendly method in the range of 35-80 and 40-155 nm, respectively. Se-NPs formation at the nanoscale was confirmed using UV/Vis analysis, transmission electron microscopy (TEM), and X-ray diffraction (XRD). The prepared Se-NPs were then impregnated into PW and BW for different periods ranging from 2 h to 1 week. The treated wood were then leached in distilled water for 14 days to eliminate excess Se-NPs from the wood surface. The treated wood surfaces were examined using energy-dispersive X-ray spectroscopy (EDX) and scanning electron microscopy (SEM). In addition, the depth of Se-NPs penetration into the treated wood at both tangential and radial sides was determined. Se-NPs impacts on the color properties, density, moisture content and antimicrobial activities of the treated wood were evaluated. PW treated with Se-NPs showed better antimicrobial and color characteristics than treated BW. PW samples immersed in 50 mM Se-NPs for 2 h showed the highest K/S values, whereas the highest antimicrobial values were obtained for those immersed at the same concentration for 2 days, and 1 week.


Assuntos
Anti-Infecciosos , Fagus , Nanopartículas Metálicas , Pinus , Selênio , Selênio/química , Madeira , Nanopartículas Metálicas/química , Anti-Infecciosos/farmacologia , Difração de Raios X
3.
Artigo em Inglês | MEDLINE | ID: mdl-36497918

RESUMO

Studies show that forests are one of the main recreational destinations. This can be explained by their beneficial effects on the health of their visitors, which can be attributed to compounds from the terpene group. The aim of this research was to determine the chemical composition of air in the interiors of Nemoral Scots pine forests and submountainous beech forests, with the determination of compounds of the terpene group. Samples of organic compounds present in the air were collected with the use of Tenax TA sorbent tubes. The process of separation, identification, and determination of the extracted organic compounds was carried out with the use of the gas chromatography technique integrated with a flame ionization detector. Additional identification of the extracted compounds was carried out with the use of GC coupled with mass spectrometry. The most abundant group of compounds was the aliphatic hydrocarbons, both saturated (linear and branched) and unsaturated (terpenes). Carbonyl compounds were also found in the collected samples, but they constituted no more than 10% of all compounds present on the chromatograms. The concentrations of terpenes and terpenoids in the forest atmosphere varied from 10 to 74 µg·m-3, representing on average 33% of the total volatile organic compounds.


Assuntos
Fagus , Compostos Orgânicos Voláteis , Florestas , Compostos Orgânicos Voláteis/análise , Atmosfera/análise , Ionização de Chama , Terpenos/análise , Terpenos/química
4.
Molecules ; 27(9)2022 Apr 28.
Artigo em Inglês | MEDLINE | ID: mdl-35566174

RESUMO

Bark is a major by-product of woodworking industries. The contents of several wood species are known to harbor antimicrobial, antiviral, anti-inflammatory and wound-healing capacities. The aim of this work was to identify beneficial properties of Austrian larch, birch and beech bark extracts for their potential usage as additives or active ingredients in dermatological applications. Bacterial agar diffusion assay and resazurin-based broth microdilution assay were used to evaluate anti-bacterial activity. To gain more insight into the cellular response to bark extracts, viability-, scratch-assays and ELISAs were performed. Birch and beech extracts showed strong antimicrobial activities against Gram-positive bacteria, including Cutibacterium acnes, Staphylococcus epidermidis and MRSA. Wound closure was enhanced with birch and beech extracts as compared to controls in the scratch-assays. Whereas beneficial properties of birch bark components have previously been described, the similar effects of beech extracts are novel. The combined positive effect on wound-healing and antimicrobial activity has great potential for the treatment of various skin diseases, including acne in future dermal applications.


Assuntos
Anti-Infecciosos , Fagus , Larix , Antibacterianos/farmacologia , Anti-Infecciosos/farmacologia , Betula , Testes de Sensibilidade Microbiana , Casca de Planta , Extratos Vegetais/farmacologia , Staphylococcus epidermidis
5.
PLoS One ; 16(3): e0247478, 2021.
Artigo em Inglês | MEDLINE | ID: mdl-33690726

RESUMO

The Museo Nazionale della Scienza e della Tecnologia "Leonardo da Vinci" in Milan is exposing two pairs of canal lock gates, used to control the water flow in Milan canal system, whose design appears in the Leonardo's Codex Atlanticus. The wood present in the gates has been deeply characterised by mean of a multidisciplinary investigation involving i) DNA barcoding of wood fragments; ii) microbial community characterisation, and iii) chemical analyses. DNA barcoding revealed that two fragments of the gates belonged to wood species widely used in the middle age: Fagus sylvatica and Picea abies. The chemical characterisations were based on the use of ionic liquid as dissolving medium in order to analyse the entire cell wall material by means of Gel Permeation Chromatography (GPC) and 2D-NMR-HSQC techniques. This multidisciplinary analytical approach was able to highlight the complex nature of the degradation occurred during the gate operation (XVI-XVIII centuries): an intricate interplay between microbial populations (i.e. Shewanella), inorganic factors (i.e. iron from nails), physical factors and the lignocellulosic material.


Assuntos
Materiais de Construção/história , Código de Barras de DNA Taxonômico/métodos , Madeira/química , Madeira/classificação , Cromatografia em Gel , DNA de Plantas/genética , Fagus/classificação , Fagus/genética , História Antiga , Itália , Lignina/análise , Filogenia , Picea/classificação , Picea/genética , Madeira/genética
6.
New Phytol ; 229(5): 2611-2624, 2021 03.
Artigo em Inglês | MEDLINE | ID: mdl-33128821

RESUMO

Nutrient imbalances cause the deterioration of tree health in European forests, but the underlying physiological mechanisms are unknown. Here, we investigated the consequences of decreasing root carbohydrate reserves for phosphorus (P) mobilisation and uptake by forest trees. In P-rich and P-poor beech (Fagus sylvatica) forests, naturally grown, young trees were girdled and used to determine root, ectomycorrhizal and microbial activities related to P mobilisation in the organic layer and mineral topsoil in comparison with those in nongirdled trees. After girdling, root carbohydrate reserves decreased. Root phosphoenolpyruvate carboxylase activities linking carbon and P metabolism increased. Root and ectomycorrhizal phosphatase activities and the abundances of bacterial genes catalysing major steps in P turnover increased, but soil enzymes involved in P mobilisation were unaffected. The physiological responses to girdling were stronger in P-poor than in P-rich forests. P uptake was decreased after girdling. The soluble and total P concentrations in roots were stable, but fine root biomass declined after girdling. Our results support that carbohydrate depletion results in reduced P uptake, enhanced internal P remobilisation and root biomass trade-off to compensate for the P shortage. As reductions in root biomass render trees more susceptible to drought, our results link tree deterioration with disturbances in the P supply as a consequence of decreased belowground carbohydrate allocation.


Assuntos
Fagus , Árvores , Carboidratos , Florestas , Fósforo , Raízes de Plantas
7.
PLoS One ; 15(11): e0242280, 2020.
Artigo em Inglês | MEDLINE | ID: mdl-33201911

RESUMO

Species distribution models can help predicting range shifts under climate change. The aim of this study is to investigate the late Quaternary distribution of Oriental beech (Fagus orientalis) and to project future distribution ranges under different climate change scenarios using a combined palaeobotanical, phylogeographic, and modelling approach. Five species distribution modelling algorithms under the R-package `biomod2`were applied to occurrence data of Fagus orientalis to predict distributions under present, past (Last Glacial Maximum, 21 ka, Mid-Holocene, 6 ka), and future climatic conditions with different scenarios obtained from MIROC-ESM and CCSM4 global climate models. Distribution models were compared to palaeobotanical and phylogeographic evidence. Pollen data indicate northern Turkey and the western Caucasus as refugia for Oriental beech during the Last Glacial Maximum. Although pollen records are missing, molecular data point to Last Glacial Maximum refugia in northern Iran. For the mid-Holocene, pollen data support the presence of beech in the study region. Species distribution models predicted present and Last Glacial Maximum distribution of Fagus orientalis moderately well yet underestimated mid-Holocene ranges. Future projections under various climate scenarios indicate northern Iran and the Caucasus region as major refugia for Oriental beech. Combining palaeobotanical, phylogeographic and modelling approaches is useful when making projections about distributions of plants. Palaeobotanical and molecular evidence reject some of the model projections. Nevertheless, the projected range reduction in the Caucasus region and northern Iran highlights their importance as long-term refugia, possibly related to higher humidity, stronger environmental and climatic heterogeneity and strong vertical zonation of the forest vegetation.


Assuntos
Mudança Climática , Fagus/crescimento & desenvolvimento , Algoritmos , Fagus/fisiologia , Fósseis , Irã (Geográfico) , Filogeografia , Pólen , Refúgio de Vida Selvagem , Turquia
8.
Molecules ; 25(15)2020 Jul 22.
Artigo em Inglês | MEDLINE | ID: mdl-32708006

RESUMO

Fractionation of lignocellulose into its three main components, lignin, hemicelluloses, and cellulose, is a common approach in modern biorefinery concepts. Whereas the valorization of hemicelluloses and cellulose sugars has been widely discussed in literature, lignin utilization is still challenging. Due to its high heterogeneity and complexity, as well as impurities from pulping, it is a challenging feedstock. However, being the most abundant source of renewable aromatics, it remains a promising resource. This work describes a fractionation procedure that aims at stepwise precipitating beech wood (Fagus sp.) lignin obtained with OrganoCat technology from a 2-methyltetrahydrofuran solution, using n-hexane and n-pentane as antisolvents. By consecutive antisolvent precipitation and filtration, lignin is fractionated and then characterized to elucidate the structure of the different fractions. This way, more defined and purified lignin fractions can be obtained. Narrowing down the complexity of lignin and separately valorizing the fractions might further increase the economic viability of biorefineries.


Assuntos
Fagus/química , Lignina/isolamento & purificação , Extratos Vegetais/isolamento & purificação , Biomassa , Fracionamento Químico , Precipitação Química , Filtração , Furanos/química , Estrutura Molecular , Peso Molecular , Solubilidade
9.
New Phytol ; 227(2): 641-653, 2020 07.
Artigo em Inglês | MEDLINE | ID: mdl-32167572

RESUMO

In species with long-distance dispersal capacities and inhabiting a large ecological niche, local selection and gene flow are expected to be major evolutionary forces affecting the genetic adaptation of natural populations. Yet, in species such as trees, evidence of microgeographic adaptation and the quantitative assessment of the impact of gene flow on adaptive genetic variation are still limited. Here, we used extensive genetic and phenotypic data from European beech seedlings collected along an elevation gradient, and grown in a common garden, to study the signature of selection on the divergence of eleven potentially adaptive traits, and to assess the role of gene flow in resupplying adaptive genetic variation. We found a significant signal of adaptive differentiation among plots separated by < 1 km, with selection acting on growth and phenological traits. Consistent with theoretical expectations, our results suggest that pollen dispersal contributes to increase genetic diversity for these locally differentiated traits. Our results thus highlight that local selection is an important evolutionary force in natural tree populations and suggest that management interventions to facilitate movement of gametes along short ecological gradients would boost genetic diversity of individual tree populations, and enhance their adaptive potential to rapidly changing environments.


Assuntos
Fagus , Árvores , Aclimatação , Adaptação Fisiológica/genética , Variação Genética , Pólen/genética , Árvores/genética
10.
Molecules ; 24(21)2019 Oct 25.
Artigo em Inglês | MEDLINE | ID: mdl-31731511

RESUMO

Despite the development of a range of anti-cancer agents, cancer diagnoses are still increasing in number, remaining a leading cause of death. Anticancer drug treatment is particularly important for leukemia. We screened Turkish plants and found the unique antileukemic activity of twig components in Turkish Caucasian beech, selectively inducing apoptosis in leukemia cells. This effect is unique among some kinds of beeches, presumably related to oxidative stress. This study would lead to effective use of discarded material, i.e., twig of beech, and a new anti-leukemic drug based on large tree.


Assuntos
Fagus/química , Leucemia/tratamento farmacológico , Extratos Vegetais/farmacologia , Apoptose/efeitos dos fármacos , Linhagem Celular Tumoral , Proliferação de Células/efeitos dos fármacos , Humanos , Extratos Vegetais/química , Folhas de Planta/química , Árvores/química
11.
Kosin Medical Journal ; : 126-137, 2019.
Artigo em Inglês | WPRIM | ID: wpr-786389

RESUMO

OBJECTIVES: Tree pollen causes allergic rhinitis and asthma. We investigated children who diagnosed as rhinitis or asthma, living in Busan, for tree allergen sensitization, component allergen, oral allergy syndrome, and the relationship between pollen counts and allergen sensitization.METHODS: Pollen were collected in Busan, from January 1 to December 31, 2017, using a Rotorod sampler and enumerated using a microscope. We conducted a study of children with rhinitis or asthma at Busan St. Mary's Hospital in 2017, administered an ISAAC questionnaire, and an oral allergy syndrome survey. Serum specific Ig E tests were performed.RESULTS: Among the 57 patients, the mean age was 9.3 years. The pollen counts in decreasing order were as follows: pine, alder, oak, juniper, beech, ginkgo, and birch. For sensitization, birch and alder 35.1%, Japanese cedar 19.3%, juniper 17.5%, pine 10.5%, and Japanese cypress 8.2%. The component Ig E was tested in 27 patients. Bet v 1 had a high correlation with birch, alder, and peach. Bet v 2 showed a statistically significant correlation with all tree pollen except cypress. Bet v 4 did not have any apparent correlation. Bet v 6 had the same pattern as Bet v 2, but correlation coefficient was higher than that of Bet v 2. Oral allergy syndrome was noted in 7 patients, including peach, peanut, apple, tomato, kiwi, and sesame.CONCLUSIONS: Alder and juniper are clinically important tree pollens in Busan. These pollens cause sensitization to birch and Japanese cedar by cross-reaction.


Assuntos
Criança , Humanos , Alnus , Arachis , Povo Asiático , Asma , Betula , Cryptomeria , Cupressus , Fagus , Ginkgo biloba , Hipersensibilidade , Juniperus , Solanum lycopersicum , Pólen , Prunus persica , Rinite , Rinite Alérgica , Sesamum , Árvores
12.
Sci Rep ; 8(1): 10512, 2018 Jul 12.
Artigo em Inglês | MEDLINE | ID: mdl-30002383

RESUMO

Fag s 1 is a member of the Pathogen Related protein family 10 (PR-10) and can elicit cross-reaction with IgE antibodies produced against the birch pollen allergen Bet v 1. The Nuclear Magnetic Resonance (NMR) structure of Fag s 1 is presented along with its dynamic properties. It shares 66% identity with Bet v 1 and exhibits the expected three α-helices and seven ß-sheets arranged as a semi-beta barrel and exposing the residues mapped as the Bet v 1 IgE epitope. The structural dynamics of Fag s 1 were monitored on the fast and intermediate timescales, using relaxation rates. The complex dynamics of Fag s 1 are closely related to the internal cavity, and they modulate IgE and ligand binding.


Assuntos
Alérgenos/imunologia , Antígenos de Plantas/química , Reações Cruzadas , Fagus/imunologia , Proteínas de Plantas/química , Antígenos de Plantas/imunologia , Antígenos de Plantas/isolamento & purificação , Betula/imunologia , Epitopos/imunologia , Humanos , Simulação de Dinâmica Molecular , Ressonância Magnética Nuclear Biomolecular , Proteínas de Plantas/imunologia , Proteínas de Plantas/isolamento & purificação , Pólen/imunologia , Estrutura Secundária de Proteína , Estrutura Terciária de Proteína , Proteínas Recombinantes/química , Proteínas Recombinantes/imunologia , Proteínas Recombinantes/isolamento & purificação , Relação Estrutura-Atividade
13.
New Phytol ; 220(4): 1200-1210, 2018 12.
Artigo em Inglês | MEDLINE | ID: mdl-29770963

RESUMO

Increases in summer droughts and nitrogen (N) deposition have raised concerns of widespread biodiversity loss and nutrient imbalances, but our understanding of the ecological role of ectomycorrhizal fungal (ECMF) diversity in mediating root functions remains a major knowledge gap. We used different global change scenarios to experimentally alter the composition of ECMF communities colonizing European beech saplings and examined the consequences for phosphorus (P) uptake (H333 PO4 feeding experiment) and use efficiencies of trees. Specifically, we simulated increases in temperature and N deposition and decreases in soil moisture and P availability in a factorial experiment. Here, we show that ECMF α diversity is a major factor contributing to root functioning under global change. P uptake efficiency of beech significantly increased with increasing ECMF species richness and diversity, as well as with decreasing P availability. As a consequence of decreases in ECMF diversity, P uptake efficiency decreased when soil moisture was limiting. By contrast, P use efficiencies were a direct (negative) function of P availability and not of ECMF diversity. We conclude that increasing summer droughts may reduce ECMF diversity and the complementarity of P uptake by ECMF species, which will add to negative growth effects expected from nutrient imbalances under global change.


Assuntos
Biodiversidade , Fagus/microbiologia , Micorrizas/fisiologia , Fósforo/metabolismo , Biomassa , Modelos Lineares , Microbiota
14.
Tree Physiol ; 38(1): 37-51, 2018 01 01.
Artigo em Inglês | MEDLINE | ID: mdl-29182787

RESUMO

To investigate how long-lived forest trees cope with low soil phosphorus (P) availabilities, we characterized P nutrition of beech (Fagus sylvatica, L.) in soils from P-rich and P-poor beech forests throughout an annual growth cycle. Young trees were excavated with intact soil cores in mono-specific beech forests, kept under common garden conditions, and used for 33P labeling, analyses of P uptake, P content and biomass during five phenological stages (dormancy in winter, bud swelling in early spring, mature leaves in early and late summer, and senescent leaves in fall). Seasonal allocation patterns showed that young, emerging leaves were preferred sinks for P under P-poor conditions, thereby keeping foliar P concentrations at levels similar to those of trees grown in P-rich soil. Phosphorus concentrations in stems and roots of trees from the P-poor conditions were lower than those from P-rich conditions. Coarse roots were the main P storage tissue, supplying inorganic P to newly formed leaves, originating from the inorganic and organic P pools under low and high P conditions, respectively. Beech trees in P-poor soil exhibited net biomass increment early in the annual growth along with a strong P deficit, which was replenished by enhanced uptake in late summer and fall. Trees in P-rich soil grew until late summer, and showed a moderate P decline in organic pools and recovery late in fall, which coincided with elevated P uptake from soil. Beech in P-poor soil produced more biomass per unit of P but at a slower growth rate than those in P-rich soil, thereby exhibiting similar P-use efficiencies. Temporal decoupling of growth and P acquisition in combination with internal P trade-off between storage tissues and leaves facilitated flexible acclimation of beech to a wide range of soil P availabilities.


Assuntos
Fagus/metabolismo , Fósforo/metabolismo , Folhas de Planta/metabolismo , Solo , Árvores/metabolismo
15.
J Inorg Biochem ; 181: 139-144, 2018 04.
Artigo em Inglês | MEDLINE | ID: mdl-28967474

RESUMO

The aim of this study was to determine the content, distribution and behaviour of Al in soils under beech forest with different parent rock, and to assess the role of herbaceous vegetation on soil Al behaviour. We hypothesize that the contents of elements in the soil sorption complex (Al etc.) are strongly influenced by vegetation cover. Also, low molecular mass organic acids (LMMOA) can be considered as an indicator of soil organic matter (SOM) decomposition and vegetation litter turnover. Speciation of LMMOA, nutrition content (PO43-, Ca2+, K+) and element composition in aqueous extracts were determined by means of ion chromatography and inductively coupled plasma - optical emission spectrometry (ICP-OES) respectively. Active and exchangeable pH, sorption characteristics and exchangeable Al (Alex) were determined in BaCl2 extracts by ICP-OES. Elemental composition of parent rocks was assessed by means of X-ray fluorescence spectroscopy. Herb-poor localities showed lower pH, less nutrients (PO43-, Ca2+, K+), less LMMOA, a larger stock of SOM and greater cation exchange capacity. There was also lower mobilisation of Al in organic horizons, which explains the larger pools of Al. Generally, we can conclude that LMMOA, and thus soil vegetation cover, play an important role in the Al soil cycle.


Assuntos
Alumínio/toxicidade , Quelantes/química , Sedimentos Geológicos/química , Desenvolvimento Vegetal/efeitos dos fármacos , Plantas Medicinais/efeitos dos fármacos , Poluentes do Solo/toxicidade , Solo/química , Absorção Fisico-Química/efeitos dos fármacos , Absorção Fisiológica/efeitos dos fármacos , Alumínio/análise , Alumínio/química , Alumínio/metabolismo , Quelantes/análise , República Tcheca , Fagus/química , Fagus/efeitos dos fármacos , Fagus/crescimento & desenvolvimento , Fagus/metabolismo , Florestas , Substâncias Húmicas/análise , Concentração de Íons de Hidrogênio , Peso Molecular , Plantas/efeitos dos fármacos , Plantas/metabolismo , Plantas Medicinais/crescimento & desenvolvimento , Plantas Medicinais/metabolismo , Poluentes do Solo/análise , Poluentes do Solo/química , Poluentes do Solo/metabolismo , Solubilidade
16.
Journal of Rhinology ; : 91-98, 2018.
Artigo em Inglês | WPRIM | ID: wpr-718267

RESUMO

BACKGROUND AND OBJECTIVES: The present study evaluated the results of skin prick test using 55 allergens at 20 centers in the Republic of Korea in 2006, 2010, and 2014–2015. The aim was to assess changes in the positive rate of allergens according to temporal, regional, and environmental factors. MATERIALS AND METHODS: In total, 20 hospitals were selected based on the population distribution in the Republic of Korea. A skin prick test panel comprising 55 aeroallergens was distributed to 18 hospitals for this prospective study. The 2006 and 2010 skin prick test results were collected and analyzed retrospectively from 20 hospitals, while the 2014/2015 skin prick test results (from June 2014 to May 2015) were collected prospectively from 18 hospitals. RESULTS: A total of 14,897 SPT test results were analyzed: 4,319 in 2006, 7,431 in 2010, and 1,852 in 2014/2015. The overall rate of skin prick test positivity to more than two allergens was significantly higher in males than females. The positive rates of alder pollens and birch, oak and ragweed pollen positivity were increased in older patients. Several positive rates were increased according to the temperature in spring. The positive rates for beech pollen, birch pollen, hazel pollen, oak pollen, Tyrophagus putrescentiae, mugwort, cat, Acarus siro, Lepidoglyphus destructor and Tyrophagus putrescentiae were significantly increased, while those of Cult rye pollen and dandelion were significantly decreased over the three test periods. The overall positive rate for allergens in Jeju province varied significantly from Seoul and other cities. CONCLUSION: Change in the positive rate of multiple aeroallergens was evaluated in the Republic of Korea over time. Our findings can be used to recommend aeroallergens suitable for inclusion in skin prick test panels in the Republic of Korea and will facilitate further investigation of changes in the patterns of allergic diseases.


Assuntos
Animais , Gatos , Feminino , Humanos , Masculino , Alérgenos , Alnus , Ambrosia , Artemisia , Betula , Demografia , Fagus , Coreia (Geográfico) , Ácaros , Pólen , Estudos Prospectivos , República da Coreia , Estudos Retrospectivos , Secale , Seul , Pele , Taraxacum
17.
J Proteomics ; 169: 33-40, 2017 10 03.
Artigo em Inglês | MEDLINE | ID: mdl-28625739

RESUMO

Phosphorus is often the least available macronutrient in soil. Lack in phosphorus has detrimental effect on growth and biomass production of European Fagus sylvatica L., a major trees species in temperate forests. In contrast to leaf tissues, few studies have examined changes in the root system and no study has ever investigated the proteomic changes affected in beech roots by a lack in available phosphate (P). Here, we studied roots of young Fagus sylvatica L. trees in their native soils from two forests sites with contrasting availability of P: one P rich and P poor soil. To understand also the response to P fertilization, the trees were fertilized with triple superphosphate and the proteome of fine roots of all conditions was compared. Gel-free mass-spectrometry-based shotgun proteomics revealed that the proteome was differentially affected by diverging P availabilities. The proteomic changes that took place as the result of P fertilization were dependent on the supply level of P before the fertilization. When P was supplied to the P-rich soil proteins related to cell biogenesis exhibited increased abundances. Addition of P to soil that was strongly limited in P resulted in increased abundance of proteins associated with amino acid metabolism and transport. BIOLOGICAL SIGNIFICANCE: Beech (Fagus sylvatica L.) forests have a huge ecological and economic value across Europe. In recent years, however, these forest sites increasingly suffer under phosphorus (P) deficiency. As the consequence, growth and vitality of beech forests is impaired. For this reason, this study was conducted with the aim to identify and understand proteomic impairments and adjustments that evolve in the fine roots under both, a P deficiency and an amelioration thereof. For this, we analyzed (1) the fine root proteome of young beech trees grown (2) at two soil sites that contrast in their degree of availability P (low vs. high) in dependency (3) to a fertilization with P. This experiment revealed fundamental differences with respect to proteomic changes in dependency on the severity of P limitation and helped to identify processes that take place after amelioration of the deficiency. This information is useful to understand which physiological processes are impaired under P deficiency and, thus, impair growth. The fertilization experiment enabled to identify developmental processes that take place in fine roots when concentration of available P was increased. They are "cellular component organization and biogenesis" in the P rich soil and "synthesis of organonitrogen-containing compounds" in the P poor soil.


Assuntos
Fagus/metabolismo , Fósforo/deficiência , Raízes de Plantas/metabolismo , Proteoma/metabolismo , Adaptação Biológica , Aminoácidos/metabolismo , Fósforo/metabolismo , Fósforo/farmacologia , Proteômica/métodos , Árvores
18.
Food Chem ; 225: 239-245, 2017 Jun 15.
Artigo em Inglês | MEDLINE | ID: mdl-28193421

RESUMO

A physicochemical characteristic of the cold-pressed oil obtained from seeds of common beech (Fagus sylvatica L.) has been presented. This plant may be considered as unconventional oilseeds crops because of relatively high content of fat (27.25%). The analyzed beech seeds oil has been classified as oleic-linoleic acids oil with more than 76% percentage share of those species. Beech seeds oil contains 4.2% of gamma-linolenic acid (GLA). Unique characteristic is the high content of γ-tocopherol (75.4mg/100g) and δ-tocopherol (34.05mg/100g). γ-Tocopherol is effective scavengers of reactive nitrogen species and prevents DNA bases nitration, what makes beech seeds oil interesting raw material in the production of cosmetics. Additionally the content of carotenoids, very effective photooxidation inhibitors, is at high level in comparison with other cold-pressed oils. It was demonstrated that PCA analysis may help to determine the authenticity of oil obtained from beech seeds.


Assuntos
Fagus/química , Óleos de Plantas/química , Sementes/química , Fenômenos Químicos
19.
Artigo em Inglês | WPRIM | ID: wpr-114697

RESUMO

PURPOSE: Inhalant allergen sensitization is one of the major factors involved in the pathogenesis of allergic respiratory diseases. However, the sensitization is determined by interactions between genetic and environmental factors. Thus, testing panels of inhalant allergens may differ among geographical areas. Here we aimed to determine 10 common inhalant allergens in Korean adult patients with suspected respiratory allergies and to examine the variation between different geographical locations. METHODS: A total of 28,954 patient records were retrieved for retrospective analysis, from 12 referral allergy clinics located in 9 different areas. Inclusion criteria were Korean adults (≥18 years old) who underwent the inhalant allergen skin prick test for suspected history of respiratory allergy. The primary outcome was inhalant allergen skin prick response. Demographic and clinical information were also collected. Positive skin prick responses to allergens were defined as allergen-to-histamine wheal ratio ≥1. Based on skin test results, the most prevalent aeroallergens were determined. RESULTS: The overall prevalence of allergic sensitization was 45.3%. Dermatophagoides farinae and Dermatophagoides pteronyssinus were the most commonly sensitized allergens. Other common inhalant allergens were cat epithelium (8.1%), birch (7.7%), mugwort (6.9%), alder (6.7%), hazel (6.7%), beech (6.7%), oak (6.6%), and Tyrophagus putres (6.2%), in decreasing order frequency. These 10 inhalant allergens explained 90% of inhalant allergen sensitization in the study participants. However, distinct patterns of the 10 inhalant sensitization were observed in patients living in Chungnam and Jeju. American cockroach, Gernam cockroach, and Trichophyton metagrophytes were unique in Chungnam. Orchard, Japanese cedar, and Velvet were unique in Jeju. CONCLUSIONS: The present analysis suggests a panel of 10 most common inhalant allergens in Korean adult patients with suspected respiratory allergies, which explained 90% of inhalant allergen sensitization. This panel can be utilized as a practical and convenient tool for primary practice and epidemiological surveys of respiratory allergic diseases.


Assuntos
Adulto , Animais , Gatos , Humanos , Alérgenos , Alnus , Artemisia , Betula , Baratas , Cryptomeria , Dermatophagoides farinae , Dermatophagoides pteronyssinus , Epitélio , Fagus , Hipersensibilidade , Periplaneta , Prevalência , Encaminhamento e Consulta , Estudos Retrospectivos , Pele , Testes Cutâneos , Trichophyton
20.
J Biotechnol ; 239: 83-89, 2016 Dec 10.
Artigo em Inglês | MEDLINE | ID: mdl-27746306

RESUMO

A lactic acid (LA)-producing strain of the hyper-lignin-degrading fungus Phanerochaete sordida YK-624 with the lactate dehydrogenase-encoding gene from Bifidobacterium longum (Blldh) was constructed. When the endogenous pyruvate decarboxylase gene-knocked down and Blldh-expressing transformant was cultured with beech wood meal, the transformant was able to successively delignify and ferment the substrate. Supplementation of calcium carbonate into the culture medium, significantly increased the level of LA accumulation. Direct LA production (at 0.29g/l) from wood was confirmed, and additional inclusion of exogenous cellulase in this fermentation yielded significant further improvement in LA accumulation (up to 1.44g/l). This study provides the first report of direct production of LA by fermentation from woody biomass by a single microorganism, and indicates that transgenic white-rot fungi have a potential use for development of simple/easy applications for wood biorefinery.


Assuntos
Fagus/química , Ácido Láctico/metabolismo , Phanerochaete/metabolismo , Madeira/metabolismo , Proteínas de Bactérias/genética , Proteínas de Bactérias/metabolismo , Bifidobacterium longum/enzimologia , Bifidobacterium longum/genética , Biocombustíveis , Etanol/análise , Etanol/metabolismo , Fermentação , Técnicas de Silenciamento de Genes , L-Lactato Desidrogenase/genética , L-Lactato Desidrogenase/metabolismo , Ácido Láctico/análise , Phanerochaete/enzimologia , Phanerochaete/genética , Proteínas Recombinantes/genética , Proteínas Recombinantes/metabolismo
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