Base de dados : MEDLINE
Pesquisa : G16.024 [Categoria DeCS]
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[PMID]:28585369
[Au] Autor:Verma RS; Joshi N; Padalia RC; Singh VR; Goswami P; Verma SK; Iqbal H; Chanda D; Verma RK; Darokar MP; Chauhan A; Kandwal MK
[Ad] Endereço:CSIR-Central Institute of Medicinal and Aromatic Plants, Research Centre Pantnagar, Udham Singh Nagar, Uttarakhand, India.
[Ti] Título:Chemical composition and antibacterial, antifungal, allelopathic and acetylcholinesterase inhibitory activities of cassumunar-ginger.
[So] Source:J Sci Food Agric;98(1):321-327, 2018 Jan.
[Is] ISSN:1097-0010
[Cp] País de publicação:England
[La] Idioma:eng
[Ab] Resumo:BACKGROUND: Zingiber montanum (J.Koenig) Link ex A.Dietr. (Zingiberaceae), commonly known as cassumunar-ginger, is a folk remedy for the treatment of inflammations, sprains, rheumatism and asthma. The aim of the present study was to assess the chemical composition, and antibacterial, antifungal, allelopathic and acetylcholinesterase inhibitory activities of the essential oil of Z. montanum originating from India. RESULTS: The hydrodistilled essential oil of Z. montanum rhizome was analyzed using gas chromatography-flame ionization detection and gas chromatography-mass spectrometry. A total of 49 constituents, forming 98.7-99.9% of the total oil compositions, was identified. The essential oil was characterized by higher amount of monoterpene hydrocarbons (32.6-43.5%), phenylbutanoids (27.5-41.2%) and oxygenated monoterpenes (11.4-34.1%). Major constituents of the oil were sabinene (13.5-38.0%), (E)-1-(3',4'-dimethoxyphenyl)buta-1,3-diene (DMPBD) (20.6-35.3%), terpinen-4-ol (9.0-31.3%), γ-terpinene (1.1-4.8%) and ß-phellandrene (1.0-4.4%). The oil was evaluated against eight pathogenic bacteria and two fungal strains. It exhibited low to good antibacterial activity (minimum inhibitory concentration: 125-500 µg mL ) and moderate antifungal activity (250 µg mL ) against the tested strains. The oil reduced germination (69.8%) and inhibited the root and shoot growth of lettuce significantly (LD : 3.58 µL plate ). However, it did not demonstrate acetylcholinesterase inhibitory activity up to a concentration of 10 mg mL . CONCLUSIONS: The essential oil of Z. montanum can be used as a potential source of DMPBD, terpinen-4-ol and sabinene for pharmaceutical products. The results of the present study add significant information to the pharmacological activity of Z. montanum native to India. © 2017 Society of Chemical Industry.
[Mh] Termos MeSH primário: Antibacterianos/química
Antifúngicos/química
Inibidores da Colinesterase/química
Feromônios/química
Extratos Vegetais/química
Zingiberaceae/química
[Mh] Termos MeSH secundário: Acetilcolinesterase/química
Alelopatia
Antibacterianos/farmacologia
Antifúngicos/farmacologia
Bactérias/efeitos dos fármacos
Inibidores da Colinesterase/farmacologia
Fungos/efeitos dos fármacos
Alface/efeitos dos fármacos
Alface/crescimento & desenvolvimento
Feromônios/farmacologia
Extratos Vegetais/farmacologia
[Pt] Tipo de publicação:JOURNAL ARTICLE
[Nm] Nome de substância:
0 (Anti-Bacterial Agents); 0 (Antifungal Agents); 0 (Cholinesterase Inhibitors); 0 (Pheromones); 0 (Plant Extracts); EC 3.1.1.7 (Acetylcholinesterase)
[Em] Mês de entrada:1712
[Cu] Atualização por classe:171228
[Lr] Data última revisão:
171228
[Sb] Subgrupo de revista:IM
[Da] Data de entrada para processamento:170607
[St] Status:MEDLINE
[do] DOI:10.1002/jsfa.8474


  2 / 126 MEDLINE  
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[PMID]:28334326
[Au] Autor:Slattery M; Lesser MP
[Ad] Endereço:Department of BioMolecular Sciences, University of Mississippi, Oxford, MS 38677, USA.
[Ti] Título:Allelopathy-mediated competition in microbial mats from Antarctic lakes.
[So] Source:FEMS Microbiol Ecol;93(5), 2017 May 01.
[Is] ISSN:1574-6941
[Cp] País de publicação:England
[La] Idioma:eng
[Ab] Resumo:Microbial mats are vertically stratified communities that host a complex consortium of microorganisms, dominated by cyanobacteria, which compete for available nutrients and environmental niches, within these extreme habitats. The Antarctic Dry Valleys near McMurdo Sound include a series of lakes within the drainage basin that are bisected by glacial traverses. These lakes are traditionally independent, but recent increases in glacial melting have allowed two lakes (Chad and Hoare) to become connected by a meltwater stream. Microbial mats were collected from these lakes, and cultured under identical conditions at the McMurdo Station laboratory. Replicate pairings of the microbial mats exhibited consistent patterns of growth inhibition indicative of competitive dominance. Natural products were extracted from the microbial mats, and a disk diffusion assay was utilized to show that allelochemical compounds mediate competitive interactions. Both microscopy and 16S rRNA sequencing show that these mats contain significant populations of cyanobacteria known to produce allelochemicals. Two compounds were isolated from these microbial mats that might be important in the chemical ecology of these psychrophiles. In other disk:mat pairings, including extract versus mat of origin, the allelochemicals exhibited no effect. Taken together, these results indicate that Antarctic lake microbial mats can compete via allelopathy.
[Mh] Termos MeSH primário: Alelopatia/fisiologia
Cianobactérias/crescimento & desenvolvimento
Lagos/microbiologia
Consórcios Microbianos/fisiologia
Feromônios/metabolismo
[Mh] Termos MeSH secundário: Regiões Antárticas
Cianobactérias/genética
Cianobactérias/metabolismo
Ecossistema
RNA Ribossômico 16S/genética
[Pt] Tipo de publicação:JOURNAL ARTICLE
[Nm] Nome de substância:
0 (Pheromones); 0 (RNA, Ribosomal, 16S)
[Em] Mês de entrada:1710
[Cu] Atualização por classe:171003
[Lr] Data última revisão:
171003
[Sb] Subgrupo de revista:IM
[Da] Data de entrada para processamento:170324
[St] Status:MEDLINE
[do] DOI:10.1093/femsec/fix019


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[PMID]:28191585
[Au] Autor:Meiners SJ; Phipps KK; Pendergast TH; Canam T; Carson WP
[Ad] Endereço:Department of Biological Sciences, Eastern Illinois University, Charleston, IL, USA. sjmeiners@eiu.edu.
[Ti] Título:Soil microbial communities alter leaf chemistry and influence allelopathic potential among coexisting plant species.
[So] Source:Oecologia;183(4):1155-1165, 2017 Apr.
[Is] ISSN:1432-1939
[Cp] País de publicação:Germany
[La] Idioma:eng
[Ab] Resumo:While both plant-soil feedbacks and allelochemical interactions are key drivers of plant community dynamics, the potential for these two drivers to interact with each other remains largely unexplored. If soil microbes influence allelochemical production, this would represent a novel dimension of heterogeneity in plant-soil feedbacks. To explore the linkage between soil microbial communities and plant chemistry, we experimentally generated soil microbial communities and evaluated their impact on leaf chemical composition and allelopathic potential. Four native perennial old-field species (two each of Aster and Solidago) were grown in pairwise combination with each species' soil microbial community as well as a sterilized inoculum. We demonstrated unequivocally that variation in soil microbial communities altered leaf chemical fingerprints for all focal plant species and also changed their allelopathic potential. Soil microbes reduced allelopathic potential in bioassays by increasing germination 25-54% relative to sterile control soils in all four species. Plants grown with their own microbial communities had the lowest allelopathic potential, suggesting that allelochemical production may be lessened when growing with microbes from conspecifics. The allelopathic potential of plants grown in congener and confamilial soils was indistinguishable from each other, indicating an equivalent response to all non-conspecific microbial communities within these closely related genera. Our results clearly demonstrated that soil microbial communities cause changes in leaf tissue chemistry that altered their allelopathic properties. These findings represent a new mechanism of plant-soil feedbacks that may structure perennial plant communities over very small spatial scales that must be explored in much more detail.
[Mh] Termos MeSH primário: Microbiologia do Solo
Solo/química
[Mh] Termos MeSH secundário: Alelopatia
Folhas de Planta
Solidago
[Pt] Tipo de publicação:JOURNAL ARTICLE
[Nm] Nome de substância:
0 (Soil)
[Em] Mês de entrada:1705
[Cu] Atualização por classe:171116
[Lr] Data última revisão:
171116
[Sb] Subgrupo de revista:IM
[Da] Data de entrada para processamento:170214
[St] Status:MEDLINE
[do] DOI:10.1007/s00442-017-3833-4


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[PMID]:28184984
[Au] Autor:Wang H; Liu F; Luo P; Li Z; Zheng L; Wang H; Zou D; Wu J
[Ad] Endereço:Key Laboratory of Agro-ecological Processes in Subtropical Regions, Changsha Research Station for Agricultural & Environmental Monitoring, Institute of Subtropical Agriculture, Chinese Academy of Sciences, Changsha, 410125, Hunan, People's Republic of China.
[Ti] Título:Allelopathic Effects of Myriophyllum aquaticum on Two Cyanobacteria of Anabaena flos-aquae and Microcystis aeruginosa.
[So] Source:Bull Environ Contam Toxicol;98(4):556-561, 2017 Apr.
[Is] ISSN:1432-0800
[Cp] País de publicação:United States
[La] Idioma:eng
[Ab] Resumo:Allelopathy has been proposed as a sustainable means to control undesired algal growth and to reduce blooms threatening freshwater systems worldwide. In this study, the allelopathic effects of Myriophyllum aquaticum and its exudate on two typical bloom-forming cyanobacteria, Microcystis aeruginosa and Anabaena flos-aquae, were investigated under laboratory conditions. The growth of the cyanobacteria was strongly inhibited by live M. aquaticum while the primary addition of M. Aquaticum exudates had a significant inhibitory effect on the growth of M. aeruginosa but not A. flos-aquae. The results suggested that the persistent release of allelochemicals from live M. aquaticum was needed to effectively constrain the growth of A. flos-aquae. Analysis of cyanobacterial physiological indexes indicated that M. aquaticum produced an inhibitory effect on SOD enzyme activity of A. flos-aquae, while it affected membrane lipid peroxidation in M. aeruginosa. The results show the potential of M. aquaticum to mitigate cyanobacterial blooms in coexistence systems.
[Mh] Termos MeSH primário: Alelopatia
Anabaena flos-aquae/crescimento & desenvolvimento
Magnoliopsida/química
Magnoliopsida/metabolismo
Microcystis/crescimento & desenvolvimento
[Mh] Termos MeSH secundário: Anabaena flos-aquae/metabolismo
Água Doce
Peroxidação de Lipídeos
Microcystis/metabolismo
Superóxido Dismutase/antagonistas & inibidores
[Pt] Tipo de publicação:JOURNAL ARTICLE
[Nm] Nome de substância:
EC 1.15.1.1 (Superoxide Dismutase)
[Em] Mês de entrada:1705
[Cu] Atualização por classe:171116
[Lr] Data última revisão:
171116
[Sb] Subgrupo de revista:IM
[Da] Data de entrada para processamento:170211
[St] Status:MEDLINE
[do] DOI:10.1007/s00128-017-2034-5


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[PMID]:28113065
[Au] Autor:Zhiqun T; Jian Z; Junli Y; Chunzi W; Danju Z
[Ad] Endereço:Institute of Ecological Forestry, Sichuan Provincial Key Laboratory of Ecological Forestry Engineering, College of Forestry, Sichuan Agricultural University, Wenjiang 611130, China.
[Ti] Título:Allelopathic effects of volatile organic compounds from Eucalyptus grandis rhizosphere soil on Eisenia fetida assessed using avoidance bioassays, enzyme activity, and comet assays.
[So] Source:Chemosphere;173:307-317, 2017 Apr.
[Is] ISSN:1879-1298
[Cp] País de publicação:England
[La] Idioma:eng
[Ab] Resumo:Allelopathy has been identified as an underlying mechanism of detrimental environmental impacts within commercial plantations. Eucalyptus spp. are known to generate huge amounts of volatile organic compounds (VOCs) that can function as phytotoxins and thus inhibit other plants. In the present study, biochemical markers, including activities of acetylcholinesterase (AChE) and oxidative stress enzymes, such as superoxide dismutase (SOD) and glutathione S-transferase (GST), were assayed to assess changes in Eisenia fetida at the physiological level induced by different doses of VOCs as part of an acute toxicity test over 7 and 14-day exposures. In addition, the toxicities of VOCs were investigated using a soil avoidance test and comet assay. The results revealed that E. fetida exhibited significant avoidance behavior towards the highest concentrations of undecane, decane, 2,4-dimethyl heptane, and 2,2,4,6,6-pentametyl heptane. The tail DNA percentages were significantly increased for all experimental treatments relative to control. However, under the treatments of VOCs, Olive tail moment content and comet tail length also display an obvious increase compared to control, except for that of octane, undecane and decane treatments. As VOC concentrations and durations increased in the soil, activities of AChE, SOD, and GST were either stimulated or inhibited. Among the VOCs, decane, 2,4-dimethyl heptane, 2,2,4,6,6-pentamethyl heptane, and 2,4-di tert buyl phenol exerted stronger effects on enzymatic activities. In summary, VOCs in rhizosphere soils of E. grandis might exert a toxic impact on E. fetida, among which 2,4-dimethyl heptane, 2,2,4,6,6-pentamethyl heptane, and 2,4-di tert buyl phenol have the strongest effects.
[Mh] Termos MeSH primário: Alelopatia
Dano ao DNA/efeitos dos fármacos
Eucalyptus/metabolismo
Oligoquetos/efeitos dos fármacos
Rizosfera
Poluentes do Solo/toxicidade
Solo/química
Compostos Orgânicos Voláteis/toxicidade
[Mh] Termos MeSH secundário: Animais
Bioensaio
Biomarcadores/metabolismo
Ensaio Cometa
Eucalyptus/química
Glutationa Transferase/metabolismo
Malondialdeído/metabolismo
Oligoquetos/crescimento & desenvolvimento
Oligoquetos/metabolismo
Estresse Oxidativo/efeitos dos fármacos
Superóxido Dismutase/metabolismo
[Pt] Tipo de publicação:JOURNAL ARTICLE
[Nm] Nome de substância:
0 (Biomarkers); 0 (Soil); 0 (Soil Pollutants); 0 (Volatile Organic Compounds); 4Y8F71G49Q (Malondialdehyde); EC 1.15.1.1 (Superoxide Dismutase); EC 2.5.1.18 (Glutathione Transferase)
[Em] Mês de entrada:1704
[Cu] Atualização por classe:171116
[Lr] Data última revisão:
171116
[Sb] Subgrupo de revista:IM
[Da] Data de entrada para processamento:170124
[St] Status:MEDLINE


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[PMID]:28085959
[Au] Autor:Araniti F; Lupini A; Sunseri F; Abenavoli MR
[Ad] Endereço:Dipartimento AGRARIA, Università Mediterranea di Reggio Calabria, - Località Feo di Vito, Reggio Calabria, Italy.
[Ti] Título:Allelopatic Potential of Dittrichia viscosa (L.) W. Greuter Mediated by VOCs: A Physiological and Metabolomic Approach.
[So] Source:PLoS One;12(1):e0170161, 2017.
[Is] ISSN:1932-6203
[Cp] País de publicação:United States
[La] Idioma:eng
[Ab] Resumo:Dittrichia viscosa (L.) W. Greuter is a pioneer species belonging to the Compositae family. It is widespread in the Mediterranean basin, where it is considered invasive. It is a source of secondary metabolites, playing an important ecological role. D. viscosa plant extracts showed a phytotoxic activity on several physiological processes of different species. In the current study, the allelopathic potential of D. viscosa VOCs, released by its foliage, was evaluated on seed germination and root growth of lettuce. The VOCs effect was also studied on lettuce adult plants in microcosm systems, which better mimicked the open field conditions. D. viscosa VOCs inhibited both seed germination and root growth of lettuce. The VOCs composition revealed a large presence of terpenoids, responsible of the effects observed. Moreover, D. viscosa VOCs caused an alteration on plant water status accompanied by oxidative damages and photoinhibition on lettuce adult plants.
[Mh] Termos MeSH primário: Alelopatia
Asteraceae/química
Alface/efeitos dos fármacos
Compostos Orgânicos Voláteis/metabolismo
[Mh] Termos MeSH secundário: Asteraceae/metabolismo
Cromatografia Gasosa-Espectrometria de Massas
Espécies Introduzidas
Alface/crescimento & desenvolvimento
Alface/efeitos da radiação
Peroxidação de Lipídeos
Metabolômica/métodos
Estresse Oxidativo
Folhas de Planta/química
Análise de Componente Principal
Plântulas/efeitos dos fármacos
Plântulas/crescimento & desenvolvimento
Sementes/efeitos dos fármacos
Sementes/crescimento & desenvolvimento
Compostos Orgânicos Voláteis/química
Compostos Orgânicos Voláteis/farmacologia
Água/metabolismo
[Pt] Tipo de publicação:JOURNAL ARTICLE
[Nm] Nome de substância:
0 (Volatile Organic Compounds); 059QF0KO0R (Water)
[Em] Mês de entrada:1708
[Cu] Atualização por classe:170818
[Lr] Data última revisão:
170818
[Sb] Subgrupo de revista:IM
[Da] Data de entrada para processamento:170114
[St] Status:MEDLINE
[do] DOI:10.1371/journal.pone.0170161


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[PMID]:27975199
[Au] Autor:Zhang W; Jeppesen E; Wang M; Xu X; Wang L
[Ad] Endereço:College of Fisheries and Life Science, Shanghai Ocean University, Shanghai, China.
[Ti] Título:Allelopathic effect boosts Chrysosporum ovalisporum dominance in summer at the expense of Microcystis panniformis in a shallow coastal water body.
[So] Source:Environ Sci Pollut Res Int;24(5):4666-4675, 2017 Feb.
[Is] ISSN:1614-7499
[Cp] País de publicação:Germany
[La] Idioma:eng
[Ab] Resumo:The increased occurrence of harmful cyanobacterial species and, with this, higher frequency of cyanobacteria blooms, closely associated with eutrophication and climate change, have attracted increasing attention worldwide. However, competition mechanisms between the different bloom-forming cyanobacteria species remain to be elucidated. In this paper, for the first time, the allelopathic effect of the cyanobacterium Chrysosporum ovalisporum on the cyanobacterium Microcystis panniformis is reported. The results of our study conducted in a Chinese shallow coastal water body demonstrated that the biomass of M. panniformis was relatively low during the C. ovalisporum blooming period. Co-cultivation of a C. ovalisporum strain with a M. panniformis strain showed strong inhibition of the growth of M. panniformis but stimulation of C. ovalisporum. Thus, filtrate of C. ovalisporum culture had a strong inhibitory effect on the performance of M. panniformis by decreasing the maximum optical quantum yield (F /F ), the electron transport rate (ETR) of PS II and the onset of light saturation (I ) and by increasing the alkaline phosphatase (ALP) activity and superoxide dismutase (SOD) activity of M. panniformis. Our results suggest that the inter-specific allelopathic effect plays an important role in the competition between different cyanobacteria species. We foresee the importance of C. ovalisporum to intensify in a future warmer world, not least in small- to medium-sized, warm and high conductivity coastal water bodies.
[Mh] Termos MeSH primário: Alelopatia
Aphanizomenon/fisiologia
Microcystis/fisiologia
[Mh] Termos MeSH secundário: Biomassa
Oceanos e Mares
Estações do Ano
Água
[Pt] Tipo de publicação:JOURNAL ARTICLE
[Nm] Nome de substância:
059QF0KO0R (Water)
[Em] Mês de entrada:1708
[Cu] Atualização por classe:171104
[Lr] Data última revisão:
171104
[Sb] Subgrupo de revista:IM
[Da] Data de entrada para processamento:161216
[St] Status:MEDLINE
[do] DOI:10.1007/s11356-016-8149-0


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[PMID]:27690641
[Au] Autor:Yang S; Hu H; Hu T; Wang Q; Ye M; Luo J; Peng Y; Zhang R
[Ad] Endereço:a Key Laboratory of Forestry Ecological Engineering of Sichuan Province , College of Forestry, Sichuan Agricultural University , Chengdu , China.
[Ti] Título:Chemical constituents of Cinnamomum septentrionale leaf litter and its allelopathic activity on the growth of maize (Zea mays).
[So] Source:Nat Prod Res;31(11):1314-1317, 2017 Jun.
[Is] ISSN:1478-6427
[Cp] País de publicação:England
[La] Idioma:eng
[Ab] Resumo:A pot experiment was conducted to study the effect of decomposing Cinnamomum septentrionale leaf litter on the growth of maize. In this study, the morphological traits of maize were significantly inhibited when the leaf litter amount reached or exceeded 40 g per pot; Furthermore, during the early growth stage or with a large amount of litter addition, the pigment contents were inhibited by C. septentrionale leaf litter. Gas chromatography-mass spectrometry was used to determine the volatile substances of leaf litter and 34 compounds were identified, several of which were reported to be phytotoxic. In conclusion, the leaf litter of C. septentrionale showed a strong allelopathic effect on the growth of maize. Thus, it is better to avoid the growing of maize under or near the C. septentrionale plantation unless the leaf litter could be eliminated in time or other effective leaf litter processing methods could be implemented.
[Mh] Termos MeSH primário: Alelopatia
Cinnamomum/toxicidade
Folhas de Planta/toxicidade
Zea mays/crescimento & desenvolvimento
[Mh] Termos MeSH secundário: Cinnamomum/química
Cromatografia Gasosa-Espectrometria de Massas
Folhas de Planta/química
Compostos Orgânicos Voláteis/farmacologia
Zea mays/efeitos dos fármacos
[Pt] Tipo de publicação:JOURNAL ARTICLE
[Nm] Nome de substância:
0 (Volatile Organic Compounds)
[Em] Mês de entrada:1705
[Cu] Atualização por classe:170515
[Lr] Data última revisão:
170515
[Sb] Subgrupo de revista:IM
[Da] Data de entrada para processamento:161004
[St] Status:MEDLINE
[do] DOI:10.1080/14786419.2016.1236102


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[PMID]:27685082
[Au] Autor:El Ayeb-Zakhama A; Sakka-Rouis L; Flamini G; Ben Jannet H; Harzallah-Skhiri F
[Ad] Endereço:Laboratory of Genetics Biodiversity and Valorisation of Bio-resources (LR11ES41), High Institute of Biotechnology of Monastir, University of Monastir, Monastir, Tunisia.
[Ti] Título:Chemical Composition and Allelopathic Potential of Essential Oils from Citharexylum spinosum L. Grown in Tunisia.
[So] Source:Chem Biodivers;14(4), 2017 Apr.
[Is] ISSN:1612-1880
[Cp] País de publicação:Switzerland
[La] Idioma:eng
[Ab] Resumo:Citharexylum spinosum L. (Verbenaceae) also known as Citharexylum quadrangulare Jacq. or Citharexylum fruticosum L. is an exotic tree introduced many years ago in Tunisia, specially used as a street and park ornamental tree. Essential oils (EOs) were obtained by hydrodistillation of the different parts (roots, stems, leaves, flowers and fruits; drupes) collected from trees grown in the area of Monastir (Tunisia). In total, 84 compounds, representing 90.1 - 98.4% of the whole oil composition, were identified by GC-FID and GC/MS analyses. The root EO was distinguished by its high content in monoterpene hydrocarbons (α-phellandrene; 30.8%) whereas that obtained from stems was dominated by sesquiterpene hydrocarbons (cuparene; 16.4%). The leaf oil was rich in an apocarotenoid derivative (hexahydrofarnesylacetone; 26%) and an aliphatic hydrocarbon (nonadecane; 14.5%). Flowers oil was rich in esters (2-phenylethyl benzoate; 33.5%). Finally, drupes oil was rich in oxygenated sesquiterpenes (ß-eudesmol; 33.1%). Flowers oil showed a significant phytotoxic effect against lettuce seeds germination, it induces a total inhibition when tested at 1 mg/ml. Root and shoot elongation seemed to be more affected than germination. The inhibition of the shoot length varied from 3.6% to 100% and that of the root from 16.1% to 100%. The highest inhibition of 100% was detected for flower oil tested at 1 mg/ml. Our in vitro studies suggest a possible and new alternative use of C. spinosum EOs in herbicidal formulations, further experiments involving field conditions are necessary to confirm its herbicidal potential.
[Mh] Termos MeSH primário: Alelopatia/fisiologia
Óleos Voláteis/química
Verbenaceae/química
[Mh] Termos MeSH secundário: Destilação
Ésteres/isolamento & purificação
Flores/toxicidade
Cromatografia Gasosa-Espectrometria de Massas
Germinação/efeitos dos fármacos
Herbicidas/isolamento & purificação
Alface/efeitos dos fármacos
Alface/crescimento & desenvolvimento
Monoterpenos/isolamento & purificação
Óleos Voláteis/farmacologia
Estruturas Vegetais/química
Sesquiterpenos/isolamento & purificação
Tunísia
[Pt] Tipo de publicação:JOURNAL ARTICLE
[Nm] Nome de substância:
0 (Esters); 0 (Herbicides); 0 (Monoterpenes); 0 (Oils, Volatile); 0 (Sesquiterpenes)
[Em] Mês de entrada:1704
[Cu] Atualização por classe:170424
[Lr] Data última revisão:
170424
[Sb] Subgrupo de revista:IM
[Da] Data de entrada para processamento:160930
[St] Status:MEDLINE
[do] DOI:10.1002/cbdv.201600225


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[PMID]:27645140
[Au] Autor:Goga M; Antreich SJ; Backor M; Weckwerth W; Lang I
[Ad] Endereço:Cell Imaging and Ultrastructure Research, Faculty of Life Sciences, University of Vienna, Althanstrasse 14, A-1090, Vienna, Austria. michal.goga@univie.ac.at.
[Ti] Título:Lichen secondary metabolites affect growth of Physcomitrella patens by allelopathy.
[So] Source:Protoplasma;254(3):1307-1315, 2017 May.
[Is] ISSN:1615-6102
[Cp] País de publicação:Austria
[La] Idioma:eng
[Ab] Resumo:Lichen secondary metabolites can function as allelochemicals and affect the development and growth of neighboring bryophytes, fungi, vascular plants, microorganisms, and even other lichens. Lichen overgrowth on bryophytes is frequently observed in nature even though mosses grow faster than lichens, but there is still little information on the interactions between lichens and bryophytes.In the present study, we used extracts from six lichen thalli containing secondary metabolites like usnic acid, protocetraric acid, atranorin, lecanoric acid, nortistic acid, and thamnolic acid. To observe the influence of these metabolites on bryophytes, the moss Physcomitrella patens was cultivated for 5 weeks under laboratory conditions and treated with lichen extracts. Toxicity of natural mixtures of secondary metabolites was tested at three selected doses (0.001, 0.01, and 0.1 %). When the mixture contained substantial amounts of usnic acid, we observed growth inhibition of protonemata and reduced development of gametophores. Significant differences in cell lengths and widths were also noticed. Furthermore, usnic acid had a strong effect on cell division in protonemata suggesting a strong impact on the early stages of bryophyte development by allelochemicals contained in the lichen secondary metabolites.Biological activities of lichen secondary metabolites were confirmed in several studies such as antiviral, antibacterial, antitumor, antiherbivore, antioxidant, antipyretic, and analgetic action or photoprotection. This work aimed to expand the knowledge on allelopathic effects on bryophyte growth.
[Mh] Termos MeSH primário: Benzofuranos/farmacologia
Bryopsida/crescimento & desenvolvimento
Divisão Celular/efeitos dos fármacos
Compostos Heterocíclicos com 3 Anéis/farmacologia
Hidroxibenzoatos/farmacologia
Líquens/química
Salicilatos/farmacologia
Metabolismo Secundário/fisiologia
[Mh] Termos MeSH secundário: Alelopatia
Bryopsida/metabolismo
Tamanho Celular/efeitos dos fármacos
Células Germinativas Vegetais/efeitos dos fármacos
Extratos Vegetais/farmacologia
[Pt] Tipo de publicação:JOURNAL ARTICLE
[Nm] Nome de substância:
0 (Benzofurans); 0 (Heterocyclic Compounds, 3-Ring); 0 (Hydroxybenzoates); 0 (Plant Extracts); 0 (Salicylates); 0 (protocetraric acid); 0W584PFJ77 (usnic acid); 450U2VJ2VG (atranorin); 480-56-8 (lecanoric acid)
[Em] Mês de entrada:1705
[Cu] Atualização por classe:171012
[Lr] Data última revisão:
171012
[Sb] Subgrupo de revista:IM
[Da] Data de entrada para processamento:160921
[St] Status:MEDLINE
[do] DOI:10.1007/s00709-016-1022-7



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