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Pesquisa : B01.650.940.800.575.912.250.462 [Categoria DeCS]
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  1 / 66 MEDLINE  
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[PMID]:28400415
[Au] Autor:Ruhlman TA; Zhang J; Blazier JC; Sabir JSM; Jansen RK
[Ad] Endereço:Department of Integrative Biology, University of Texas at Austin, Austin, Texas 78712 USA truhlman@austin.utexas.edu.
[Ti] Título:Recombination-dependent replication and gene conversion homogenize repeat sequences and diversify plastid genome structure.
[So] Source:Am J Bot;104(4):559-572, 2017 Apr.
[Is] ISSN:1537-2197
[Cp] País de publicação:United States
[La] Idioma:eng
[Ab] Resumo:PREMISE OF THE STUDY: There is a misinterpretation in the literature regarding the variable orientation of the small single copy region of plastid genomes (plastomes). The common phenomenon of small and large single copy inversion, hypothesized to occur through intramolecular recombination between inverted repeats (IR) in a circular, single unit-genome, in fact, more likely occurs through recombination-dependent replication (RDR) of linear plastome templates. If RDR can be primed through both intra- and intermolecular recombination, then this mechanism could not only create inversion isomers of so-called single copy regions, but also an array of alternative sequence arrangements. METHODS: We used Illumina paired-end and PacBio single-molecule real-time (SMRT) sequences to characterize repeat structure in the plastome of (Geraniaceae). We used OrgConv and inspected nucleotide alignments to infer ancestral nucleotides and identify gene conversion among repeats and mapped long (>1 kb) SMRT reads against the unit-genome assembly to identify alternative sequence arrangements. RESULTS: Although lacks the canonical IR, we found that large repeats (>1 kilobase; kb) represent ∼22% of the plastome nucleotide content. Among the largest repeats (>2 kb), we identified GC-biased gene conversion and mapping filtered, long SMRT reads to the unit-genome assembly revealed alternative, substoichiometric sequence arrangements. CONCLUSION: We offer a model based on RDR and gene conversion between long repeated sequences in the plastome and provide support that both intra-and intermolecular recombination between large repeats, particularly in repeat-rich plastomes, varies unit-genome structure while homogenizing the nucleotide sequence of repeats.
[Mh] Termos MeSH primário: Conversão Gênica/genética
Genomas de Plastídeos/genética
Recombinação Genética/genética
[Mh] Termos MeSH secundário: Replicação do DNA/genética
Genoma de Planta/genética
Geraniaceae/genética
Sequências Repetitivas de Ácido Nucleico/genética
Alinhamento de Sequência
[Pt] Tipo de publicação:JOURNAL ARTICLE
[Em] Mês de entrada:1708
[Cu] Atualização por classe:170822
[Lr] Data última revisão:
170822
[Sb] Subgrupo de revista:IM
[Da] Data de entrada para processamento:170413
[St] Status:MEDLINE
[do] DOI:10.3732/ajb.1600453


  2 / 66 MEDLINE  
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[PMID]:28378593
[Au] Autor:Chun YS; Kim J; Chung S; Khorombi E; Naidoo D; Nthambeleni R; Harding N; Maharaj V; Fouche G; Yang HO
[Ad] Endereço:Natural Products Research Center, Korea Institute of Science and Technology , Gangneung, Gangwon-do, Republic of Korea.
[Ti] Título:Protective Roles of Monsonia angustifolia and Its Active Compounds in Experimental Models of Alzheimer's Disease.
[So] Source:J Agric Food Chem;65(15):3133-3140, 2017 Apr 19.
[Is] ISSN:1520-5118
[Cp] País de publicação:United States
[La] Idioma:eng
[Ab] Resumo:Alzheimer's disease (AD), a progressive neurodegenerative disorder, is characterized by the accumulation of neurotoxic ß-amyloid (Aß) peptides, which consequently affects cognitive decline and memory impairment. Current research on AD treatment is actively focusing on the prevention of neurotoxic Aß peptide accumulation. Monsonia angustifolia is reported to be consumed as an indigenous vegetable in Tanzania. In this study, we investigated the effect of the ethanol (EtOH) extract of M. angustifolia dried ground material on Aß production and spatial learning ability as protection against AD. The formation of Aß peptides was significantly reduced in HeLa cells stably transfected with the Swedish mutant form of ß-amyloid precursor protein (APPsw) after treatment with a 60% EtOH extract of M. angustifolia. We next examined the cognitive-improving effects of the EtOH extract in vivo. Tg2576 mice were treated with extract for 6 months and subjected to Morris water maze and novel object recognition tests. The results showed that the 60% EtOH extract of M. angustifolia significantly ameliorated behavioral deficits of the AD transgenic mice and reduced the level of insoluble Aß42 in the cerebral cortex and hippocampus. We further found that the 60% EtOH extract was effective for memory function recovery after shorter treatment (4 months). In addition, we isolated and identified several single compounds, justicidin A, 5-methoxyjusticidin A, chinensinaphthol, retrochinensinaphthol methyl ether, and suchilactone, from M. angustifolia and tested these compounds. Among them, justicidin A potently decreased the formation of Aß in APPsw-transfected cells. These data suggest that the 60% EtOH extract of M. angustifolia has the potential to be developed as a treatment of AD. Furthermore, justicidin A may contribute, at least partially, to the Aß alteration observed with the extract treatment.
[Mh] Termos MeSH primário: Doença de Alzheimer/prevenção & controle
Geraniaceae/química
Extratos Vegetais/administração & dosagem
[Mh] Termos MeSH secundário: Doença de Alzheimer/metabolismo
Doença de Alzheimer/psicologia
Peptídeos beta-Amiloides/metabolismo
Precursor de Proteína beta-Amiloide/metabolismo
Animais
Cognição/efeitos dos fármacos
Modelos Animais de Doenças
Seres Humanos
Masculino
Memória/efeitos dos fármacos
Camundongos
Camundongos Transgênicos
Extratos Vegetais/química
[Pt] Tipo de publicação:JOURNAL ARTICLE
[Nm] Nome de substância:
0 (Amyloid beta-Peptides); 0 (Amyloid beta-Protein Precursor); 0 (Plant Extracts)
[Em] Mês de entrada:1706
[Cu] Atualização por classe:170601
[Lr] Data última revisão:
170601
[Sb] Subgrupo de revista:IM
[Da] Data de entrada para processamento:170406
[St] Status:MEDLINE
[do] DOI:10.1021/acs.jafc.6b04451


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[PMID]:28025289
[Au] Autor:Jeiter J; Weigend M; Hilger HH
[Ad] Endereço:Nees-Institut für Biodiversität der Pflanzen, Rheinische Friedrich-Wilhelms-Universität Bonn, Meckenheimer Allee 170, D-53115 Bonn, Germany jjeiter@uni-bonn.de.
[Ti] Título:Geraniales flowers revisited: evolutionary trends in floral nectaries.
[So] Source:Ann Bot;119(3):395-408, 2017 Feb.
[Is] ISSN:1095-8290
[Cp] País de publicação:England
[La] Idioma:eng
[Ab] Resumo:BACKGROUND AND AIMS: The detailed relationships in Geraniales in their current circumscription have only recently been clarified. The disparate floral morphologies and especially the nectaries of the corresponding group have consequently not previously been studied in a phylogenetic context. METHODS: The present study investigates floral and especially nectary morphology and structure for representatives of 12 of the 13 currently accepted genera in the five families of the Geraniales. Flowers were studied using light microscopy and scanning electron microscopy. KEY RESULTS: The data demonstrate the derivation of even the most disparate floral morphologies from a basic pentamerous and pentacyclic organization, with an obdiplostemonous androecium and receptacular nectaries associated with the antesepalous stamens. Divergent morphologies are explained by modifications of merosity (tetramerous flowers), symmetry (several transitions to zygomorphic flowers) and elaboration of the nectaries into variously shaped outgrowths and appendages, especially in Francoaceae. The divergent development of nectar glands ultimately leads to either a reduction in their number (to one in some Geraniaceae and Melianthaceae) or their total loss (some Vivianiaceae). CONCLUSIONS: Floral morphology of the Geraniales shows a high degree of similarity, despite the variation in overall floral appearance and nectary morphology. A hypothesis on the transformation of the nectaries within the Geraniales is presented.
[Mh] Termos MeSH primário: Flores/anatomia & histologia
Geraniaceae/genética
[Mh] Termos MeSH secundário: Flores/ultraestrutura
Geraniaceae/anatomia & histologia
Geraniaceae/ultraestrutura
Microscopia Eletrônica de Varredura
Néctar de Plantas/genética
[Pt] Tipo de publicação:JOURNAL ARTICLE
[Nm] Nome de substância:
0 (Plant Nectar)
[Em] Mês de entrada:1708
[Cu] Atualização por classe:170822
[Lr] Data última revisão:
170822
[Sb] Subgrupo de revista:IM
[Da] Data de entrada para processamento:161228
[St] Status:MEDLINE
[do] DOI:10.1093/aob/mcw230


  4 / 66 MEDLINE  
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[PMID]:27257121
[Au] Autor:Briggs CM; Redak RA
[Ad] Endereço:Department of Biological Sciences, Mt. San Antonio College, 1100 North Grand Ave., Walnut, CA 91789 (christopher.briggs@mtsac.edu) christopher.briggs@mtsac.edu.
[Ti] Título:Seed Selection by the Harvester Ant Pogonomyrmex rugosus (Hymenoptera: Formicidae) in Coastal Sage Scrub: Interactions With Invasive Plant Species.
[So] Source:Environ Entomol;45(4):983-90, 2016 08.
[Is] ISSN:1938-2936
[Cp] País de publicação:England
[La] Idioma:eng
[Ab] Resumo:Harvester ants can be the dominant seed predators on plants by collecting and eating seeds and are known to influence plant communities. Harvester ants are abundant in coastal sage scrub (CSS), and CSS is frequently invaded by several exotic plant species. This study used observations of foraging and cafeteria-style experiments to test for seed species selection by the harvester ant Pogonomyrmex rugosus Emery (Hymenoptera: Formicidae) in CSS. Analysis of foraging behavior showed that P. rugosus carried seeds of exotic Erodium cicutarium (L.) and exotic Brassica tournefortii (Gouan) on 85 and 15% of return trips to the nest (respectively), and only a very few ants carried the native seeds found within the study areas. When compared with the availability of seeds in the field, P. rugosus selected exotic E. cicutarium and avoided both native Encelia farinosa (Torrey & A. Gray) and exotic B. tournefortii. Foraging by P. rugosus had no major effect on the seed bank in the field. Cafeteria-style experiments confirmed that P. rugosus selected E. cicutarium over other available seeds. Native Eriogonum fasciculatum (Bentham) seeds were even less selected than E. farinosa and B. tournefortii.
[Mh] Termos MeSH primário: Formigas/fisiologia
Espécies Introduzidas
Sementes
[Mh] Termos MeSH secundário: Animais
Brassica/crescimento & desenvolvimento
California
Comportamento Alimentar/fisiologia
Geraniaceae/crescimento & desenvolvimento
Dispersão de Sementes
[Pt] Tipo de publicação:JOURNAL ARTICLE; RESEARCH SUPPORT, NON-U.S. GOV'T
[Em] Mês de entrada:1707
[Cu] Atualização por classe:171126
[Lr] Data última revisão:
171126
[Sb] Subgrupo de revista:IM
[Da] Data de entrada para processamento:160604
[St] Status:MEDLINE
[do] DOI:10.1093/ee/nvw042


  5 / 66 MEDLINE  
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[PMID]:27192713
[Au] Autor:Blazier JC; Jansen RK; Mower JP; Govindu M; Zhang J; Weng ML; Ruhlman TA
[Ad] Endereço:Department of Integrative Biology, University of Texas at Austin, Austin, TX, USA.
[Ti] Título:Variable presence of the inverted repeat and plastome stability in Erodium.
[So] Source:Ann Bot;117(7):1209-20, 2016 Jun.
[Is] ISSN:1095-8290
[Cp] País de publicação:England
[La] Idioma:eng
[Ab] Resumo:BACKGROUND AND AIMS: Several unrelated lineages such as plastids, viruses and plasmids, have converged on quadripartite genomes of similar size with large and small single copy regions and a large inverted repeat (IR). Except for Erodium (Geraniaceae), saguaro cactus and some legumes, the plastomes of all photosynthetic angiosperms display this structure. The functional significance of the IR is not understood and Erodium provides a system to examine the role of the IR in the long-term stability of these genomes. We compared the degree of genomic rearrangement in plastomes of Erodium that differ in the presence and absence of the IR. METHODS: We sequenced 17 new Erodium plastomes. Using 454, Illumina, PacBio and Sanger sequences, 16 genomes were assembled and categorized along with one incomplete and two previously published Erodium plastomes. We conducted phylogenetic analyses among these species using a dataset of 19 protein-coding genes and determined if significantly higher evolutionary rates had caused the long branch seen previously in phylogenetic reconstructions within the genus. Bioinformatic comparisons were also performed to evaluate plastome evolution across the genus. KEY RESULTS: Erodium plastomes fell into four types (Type 1-4) that differ in their substitution rates, short dispersed repeat content and degree of genomic rearrangement, gene and intron content and GC content. Type 4 plastomes had significantly higher rates of synonymous substitutions (dS) for all genes and for 14 of the 19 genes non-synonymous substitutions (dN) were significantly accelerated. We evaluated the evidence for a single IR loss in Erodium and in doing so discovered that Type 4 plastomes contain a novel IR. CONCLUSIONS: The presence or absence of the IR does not affect plastome stability in Erodium. Rather, the overall repeat content shows a negative correlation with genome stability, a pattern in agreement with other angiosperm groups and recent findings on genome stability in bacterial endosymbionts.
[Mh] Termos MeSH primário: Geraniaceae/genética
Sequências Repetidas Invertidas
[Mh] Termos MeSH secundário: Composição de Bases
Evolução Biológica
Genes de Plantas
Genoma de Planta
Genomas de Plastídeos
Íntrons
Filogenia
[Pt] Tipo de publicação:JOURNAL ARTICLE
[Em] Mês de entrada:1707
[Cu] Atualização por classe:170724
[Lr] Data última revisão:
170724
[Sb] Subgrupo de revista:IM
[Da] Data de entrada para processamento:160519
[St] Status:MEDLINE
[do] DOI:10.1093/aob/mcw065


  6 / 66 MEDLINE  
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[PMID]:27190001
[Au] Autor:Weng ML; Ruhlman TA; Jansen RK
[Ad] Endereço:Department of Biology, University of Maryland, College Park Department of Integrative Biology, University of Texas, Austin maolun@umd.edu.
[Ti] Título:Plastid-Nuclear Interaction and Accelerated Coevolution in Plastid Ribosomal Genes in Geraniaceae.
[So] Source:Genome Biol Evol;8(6):1824-38, 2016 06 27.
[Is] ISSN:1759-6653
[Cp] País de publicação:England
[La] Idioma:eng
[Ab] Resumo:Plastids and mitochondria have many protein complexes that include subunits encoded by organelle and nuclear genomes. In animal cells, compensatory evolution between mitochondrial and nuclear-encoded subunits was identified and the high mitochondrial mutation rates were hypothesized to drive compensatory evolution in nuclear genomes. In plant cells, compensatory evolution between plastid and nucleus has rarely been investigated in a phylogenetic framework. To investigate plastid-nuclear coevolution, we focused on plastid ribosomal protein genes that are encoded by plastid and nuclear genomes from 27 Geraniales species. Substitution rates were compared for five sets of genes representing plastid- and nuclear-encoded ribosomal subunit proteins targeted to the cytosol or the plastid as well as nonribosomal protein controls. We found that nonsynonymous substitution rates (dN) and the ratios of nonsynonymous to synonymous substitution rates (ω) were accelerated in both plastid- (CpRP) and nuclear-encoded subunits (NuCpRP) of the plastid ribosome relative to control sequences. Our analyses revealed strong signals of cytonuclear coevolution between plastid- and nuclear-encoded subunits, in which nonsynonymous substitutions in CpRP and NuCpRP tend to occur along the same branches in the Geraniaceae phylogeny. This coevolution pattern cannot be explained by physical interaction between amino acid residues. The forces driving accelerated coevolution varied with cellular compartment of the sequence. Increased ω in CpRP was mainly due to intensified positive selection whereas increased ω in NuCpRP was caused by relaxed purifying selection. In addition, the many indels identified in plastid rRNA genes in Geraniaceae may have contributed to changes in plastid subunits.
[Mh] Termos MeSH primário: Núcleo Celular/genética
Evolução Molecular
Geraniaceae/genética
Proteínas Ribossômicas/genética
[Mh] Termos MeSH secundário: Citosol
Genoma de Planta
Mitocôndrias/genética
Filogenia
Plastídeos/genética
Ribossomos/genética
[Pt] Tipo de publicação:JOURNAL ARTICLE
[Nm] Nome de substância:
0 (Ribosomal Proteins)
[Em] Mês de entrada:1703
[Cu] Atualização por classe:170302
[Lr] Data última revisão:
170302
[Sb] Subgrupo de revista:IM
[Da] Data de entrada para processamento:160519
[St] Status:MEDLINE
[do] DOI:10.1093/gbe/evw115


  7 / 66 MEDLINE  
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[PMID]:26893456
[Au] Autor:Zhang J; Ruhlman TA; Sabir JS; Blazier JC; Weng ML; Park S; Jansen RK
[Ad] Endereço:Department of Integrative Biology, University of Texas at Austin.
[Ti] Título:Coevolution between Nuclear-Encoded DNA Replication, Recombination, and Repair Genes and Plastid Genome Complexity.
[So] Source:Genome Biol Evol;8(3):622-34, 2016 Feb 17.
[Is] ISSN:1759-6653
[Cp] País de publicação:England
[La] Idioma:eng
[Ab] Resumo:Disruption of DNA replication, recombination, and repair (DNA-RRR) systems has been hypothesized to cause highly elevated nucleotide substitution rates and genome rearrangements in the plastids of angiosperms, but this theory remains untested. To investigate nuclear-plastid genome (plastome) coevolution in Geraniaceae, four different measures of plastome complexity (rearrangements, repeats, nucleotide insertions/deletions, and substitution rates) were evaluated along with substitution rates of 12 nuclear-encoded, plastid-targeted DNA-RRR genes from 27 Geraniales species. Significant correlations were detected for nonsynonymous (dN) but not synonymous (dS) substitution rates for three DNA-RRR genes (uvrB/C, why1, and gyrA) supporting a role for these genes in accelerated plastid genome evolution in Geraniaceae. Furthermore, correlation between dN of uvrB/C and plastome complexity suggests the presence of nucleotide excision repair system in plastids. Significant correlations were also detected between plastome complexity and 13 of the 90 nuclear-encoded organelle-targeted genes investigated. Comparisons revealed significant acceleration of dN in plastid-targeted genes of Geraniales relative to Brassicales suggesting this correlation may be an artifact of elevated rates in this gene set in Geraniaceae. Correlation between dN of plastid-targeted DNA-RRR genes and plastome complexity supports the hypothesis that the aberrant patterns in angiosperm plastome evolution could be caused by dysfunction in DNA-RRR systems.
[Mh] Termos MeSH primário: Replicação do DNA/genética
Evolução Molecular
Genomas de Plastídeos/genética
Geraniaceae/genética
[Mh] Termos MeSH secundário: Reparo do DNA/genética
Genoma de Planta
Mutação INDEL/genética
Filogenia
Plastídeos/genética
Recombinação Genética
[Pt] Tipo de publicação:JOURNAL ARTICLE; RESEARCH SUPPORT, NON-U.S. GOV'T
[Em] Mês de entrada:1703
[Cu] Atualização por classe:170302
[Lr] Data última revisão:
170302
[Sb] Subgrupo de revista:IM
[Da] Data de entrada para processamento:160220
[St] Status:MEDLINE
[do] DOI:10.1093/gbe/evw033


  8 / 66 MEDLINE  
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[PMID]:26481794
[Au] Autor:Noto AE; Shurin JB
[Ti] Título:Population variation affects interactions between two California salt marsh plant species more than precipitation.
[So] Source:Oecologia;180(2):499-506, 2016 Feb.
[Is] ISSN:1432-1939
[Cp] País de publicação:Germany
[La] Idioma:eng
[Ab] Resumo:Species that occur along broad environmental gradients often vary in phenotypic traits that make them better adapted to local conditions. Variation in species interactions across gradients could therefore be due to either phenotypic differences among populations or environmental conditions that shift the balance between competition and facilitation. To understand how the environment (precipitation) and variation among populations affect species interactions, we conducted a common garden experiment using two common salt marsh plant species, Salicornia pacifica and Jaumea carnosa, from six salt marshes along the California coast encompassing a large precipitation gradient. Plants were grown alone or with an individual of the opposite species from the same site and exposed to one of three precipitation regimes. J. carnosa was negatively affected in the presence of S. pacifica, while S. pacifica was facilitated by J. carnosa. The strength of these interactions varied by site of origin but not by precipitation treatment. These results suggest that phenotypic variation among populations can affect interaction strength more than environment, despite a threefold difference in precipitation. Geographic intraspecific variation may therefore play an important role in determining the strength of interactions in communities.
[Mh] Termos MeSH primário: Chenopodiaceae/crescimento & desenvolvimento
Meio Ambiente
Geraniaceae/crescimento & desenvolvimento
Fenótipo
Chuvas
Salinidade
Zonas Úmidas
[Mh] Termos MeSH secundário: California
Chenopodiaceae/genética
Chenopodiaceae/metabolismo
Ecologia
Geraniaceae/genética
Geraniaceae/metabolismo
Tolerância a Sal
Cloreto de Sódio/metabolismo
Especificidade da Espécie
Água
[Pt] Tipo de publicação:JOURNAL ARTICLE; RESEARCH SUPPORT, NON-U.S. GOV'T; RESEARCH SUPPORT, U.S. GOV'T, NON-P.H.S.
[Nm] Nome de substância:
059QF0KO0R (Water); 451W47IQ8X (Sodium Chloride)
[Em] Mês de entrada:1609
[Cu] Atualização por classe:171010
[Lr] Data última revisão:
171010
[Sb] Subgrupo de revista:IM
[Da] Data de entrada para processamento:151021
[St] Status:MEDLINE


  9 / 66 MEDLINE  
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[PMID]:26084731
[Au] Autor:Zhuang WW; Serpe M; Zhang YM
[Ad] Endereço:Key Laboratory of Biogeography and Bioresource in Arid Land, Xinjiang Institute of Ecology and Geography, Chinese Academy of Sciences, Urumqi, China.
[Ti] Título:The effect of lichen-dominated biological soil crusts on growth and physiological characteristics of three plant species in a temperate desert of northwest China.
[So] Source:Plant Biol (Stuttg);17(6):1165-75, 2015 Nov.
[Is] ISSN:1438-8677
[Cp] País de publicação:England
[La] Idioma:eng
[Ab] Resumo:Biocrusts (biological soil crusts) cover open spaces between vascular plants in most arid and semi-arid areas. Information on effects of biocrusts on seedling growth is controversial, and there is little information on their effects on plant growth and physiology. We examined impacts of biocrusts on growth and physiological characteristics of three habitat-typical plants, Erodium oxyrhynchum, Alyssum linifolium and Hyalea pulchella, growing in the Gurbantunggut Desert, northwest China. The influence of biocrusts on plant biomass, leaf area, leaf relative water content, photosynthesis, maximum quantum efficiency of PSII (F(v)/F(m)), chlorophyll, osmotic solutes (soluble sugars, protein, proline) and antioxidant enzymes (superoxide dismutase, catalase, peroxidase) was investigated on sites with or without biocrust cover. Biomass, leaf area, leaf water content, photosynthesis, F(v)/F(m) and chlorophyll content in crusted soils were higher than in uncrusted soils during early growth and lower later in the growth period. Soluble sugars, proline and antioxidant enzyme activity were always higher in crusted than in uncrusted soils, while soluble protein content was always lower. These findings indicate that biocrusts have different effects on these three ephemeral species during growth in this desert, primarily via effects on soil moisture, and possibly on soil nutrients. The influence of biocrusts changes during plant development: in early plant growth, biocrusts had either positive or no effect on growth and physiological parameters. However, biocrusts tended to negatively influence plants during later growth. Our results provide insights to explain why previous studies have found different effects of biocrusts on vascular plant growth.
[Mh] Termos MeSH primário: Clima Desértico
Ecossistema
Líquens
Magnoliopsida/fisiologia
Microbiologia do Solo
Solo/química
[Mh] Termos MeSH secundário: Asteraceae
Biomassa
Brassicaceae
China
Geraniaceae
Magnoliopsida/crescimento & desenvolvimento
Magnoliopsida/metabolismo
Fotossíntese
Água
[Pt] Tipo de publicação:JOURNAL ARTICLE; RESEARCH SUPPORT, NON-U.S. GOV'T
[Nm] Nome de substância:
0 (Soil); 059QF0KO0R (Water)
[Em] Mês de entrada:1608
[Cu] Atualização por classe:171116
[Lr] Data última revisão:
171116
[Sb] Subgrupo de revista:IM
[Da] Data de entrada para processamento:150619
[St] Status:MEDLINE
[do] DOI:10.1111/plb.12359


  10 / 66 MEDLINE  
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[PMID]:25819000
[Au] Autor:Moilanen J; Koskinen P; Salminen JP
[Ad] Endereço:Laboratory of Organic Chemistry and Chemical Biology, Department of Chemistry, University of Turku, FI-20014 Turku, Finland. Electronic address: jmmoil@utu.fi.
[Ti] Título:Distribution and content of ellagitannins in Finnish plant species.
[So] Source:Phytochemistry;116:188-197, 2015 Aug.
[Is] ISSN:1873-3700
[Cp] País de publicação:England
[La] Idioma:eng
[Ab] Resumo:The results of a screening study, in which a total of 82 Finnish plant species were studied for their ellagitannin composition and content, are presented. The total ellagitannin content was determined by HPLC-DAD, the detected ellagitannins were further characterized by HPLC-ESI-QTOF-MS and divided into four structurally different sub-groups. Thirty plant species were found to contain ellagitannins and the ellagitannin content in the crude extracts varied from few mgg(-1) to over a hundred mgg(-1). Plant families that were rich in ellagitannins (>90mgg(-1) of the crude extract) were Onagraceae, Lyhtraceae, Geraniaceae, Elaeagnaceae, Fagaceae and some species from Rosaceae. Plant species that contained moderate amounts of ellagitannins (31-89mgg(-1) of the crude extract) were representatives of the family Rosaceae. Plant species that contained low amounts of ellagitannins (1-30mgg(-1) of the crude extract) were representatives of the families Betulaceae and Myricaceae. The specific ellagitannin composition of the species allowed their chemotaxonomic classification and the comparison between the older Cronquist's classification and the nowadays preferred Angiosperm Phylogeny Group classification.
[Mh] Termos MeSH primário: Taninos Hidrolisáveis/análise
Taninos Hidrolisáveis/química
[Mh] Termos MeSH secundário: Cromatografia Líquida de Alta Pressão
Elaeagnaceae/química
Elaeagnaceae/classificação
Fagaceae/química
Fagaceae/classificação
Finlândia
Geraniaceae/química
Geraniaceae/classificação
Estrutura Molecular
Ressonância Magnética Nuclear Biomolecular
Onagraceae/química
Onagraceae/classificação
Folhas de Planta/química
Rosaceae/química
Rosaceae/classificação
Espectrometria de Massas por Ionização por Electrospray
[Pt] Tipo de publicação:JOURNAL ARTICLE; RESEARCH SUPPORT, NON-U.S. GOV'T
[Nm] Nome de substância:
0 (Hydrolyzable Tannins); 0 (ellagitannin)
[Em] Mês de entrada:1602
[Cu] Atualização por classe:170815
[Lr] Data última revisão:
170815
[Sb] Subgrupo de revista:IM
[Da] Data de entrada para processamento:150331
[St] Status:MEDLINE



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