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[PMID]: 29480018
[Au] Autor:Echeverría J; González-Teuber M; Urzúa A
[Ad] Address:a Laboratorio de Química Ecológica, Departamento de Ciencias del Ambiente, Facultad de Química y Biología , Universidad de Santiago de Chile , Santiago , Chile.
[Ti] Title:Antifungal activity against Botrytis cinerea of labdane-type diterpenoids isolated from the resinous exudate of Haplopappus velutinus Remy (Asteraceae).
[So] Source:Nat Prod Res;:1-5, 2018 Feb 25.
[Is] ISSN:1478-6427
[Cp] Country of publication:England
[La] Language:eng
[Ab] Abstract:Two labdane diterpenoids were isolated, from the resinous exudate of Haplopappus velutinus Remy (Asteraceae); the main compound was identified as 7,13-(E)-labdadien-15,18-dioic-acid-18-methyl ester (1) and the minor compound identified as 7-labden-15,18-dioic-acid-18-methyl ester (2). Their structures were obtained using FTIR, MS, HRMS and NMR data: 1D NMR ( H, C and DEPT-135), 2D homonuclear NMR (COSY and NOESY) and heteronuclear NMR (HSQC and HMBC). The trans stereochemistry of the decalin moiety of compounds 1 and 2 was established through NOESY experiments of the reduction product of 1; 7-labden-15,18-diol (1a). Diterpenoids 1 and 1a are described for the first time and showed antifungal activity, inhibiting approximately 40% mycelial growth of Botrytis cinerea.
[Pt] Publication type:JOURNAL ARTICLE
[Em] Entry month:1802
[Cu] Class update date: 180226
[Lr] Last revision date:180226
[St] Status:Publisher
[do] DOI:10.1080/14786419.2018.1443093

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[PMID]: 28386773
[Au] Autor:Vargas HA; Rasmann S; Ramirez-Verdugo P; Villagra CA
[Ad] Address:Depto de Recursos Ambientales, Facultad de Ciencias Agronómicas, Univ de Tarapacá, Casilla 6-D, Arica, Chile. lepvargas@gmail.com.
[Ti] Title:Lioptilodes friasi (Lepidoptera: Pterophoridae) Niche Breadth in the Chilean Mediterranean Matorral Biome: Trophic and Altitudinal Dimensions.
[So] Source:Neotrop Entomol;, 2017 Apr 06.
[Is] ISSN:1678-8052
[Cp] Country of publication:Netherlands
[La] Language:eng
[Ab] Abstract:Understanding the factors driving the diet breadth of phytophagous insects remains one of the main questions in ecological research. In this study we explored the diet breadth and plant-insect associations in the plume moth Lioptilodes friasi Vargas & Parra (Lepidoptera: Pterophoridae). This phytophagous insect was originally described in association with a single host species, Haplopappus foliosus (Asteraceae), a native shrub of the Chilean Mediterranean matorral. In order to address the breadth of host plant choice, we surveyed other Haplopappus species growing along the elevation gradient of central Chile from sea level to 2600 m. We were able to obtain L. friasi adults from five additional Haplopappus species: Haplopappus chrysantemifolius and Haplopappus decurrens from the coastal zone, Haplopappus multifolius and Haplopappus schumanii from the mid-elevation zone, and Haplopappus scrobiculatus at high elevation. Our results demonstrate that the genus-specialized endophagous herbivore L. friasi has a wider distribution and climatic tolerance than previously described. Its biogeographical range extends from the lowland coastal habitats up to the Andean subnival level. We propose that shared flower phenotypic traits such as morphology and chemical composition may have allowed the colonization of closely related Haplopappus species in central Chile, the expansion of which is limited by the harsh high elevation conditions.
[Pt] Publication type:JOURNAL ARTICLE
[Em] Entry month:1704
[Cu] Class update date: 170407
[Lr] Last revision date:170407
[St] Status:Publisher
[do] DOI:10.1007/s13744-017-0514-2

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[PMID]: 26242135
[Au] Autor:Wang SL; Yu XJ; Zhao ZK
[Ti] Title:[Haplopappus gracillis Resources of Elemene in China: a Review].
[So] Source:Zhongguo Zhong Xi Yi Jie He Za Zhi;35(6):764-8, 2015 Jun.
[Is] ISSN:1003-5370
[Cp] Country of publication:China
[La] Language:chi
[Mh] MeSH terms primary: Haplopappus
[Mh] MeSH terms secundary: China
Humans
Phytotherapy
Sesquiterpenes
[Pt] Publication type:JOURNAL ARTICLE; REVIEW
[Nm] Name of substance:0 (Sesquiterpenes); 11029-06-4 (elemene)
[Em] Entry month:1604
[Cu] Class update date: 161018
[Lr] Last revision date:161018
[Js] Journal subset:IM
[Da] Date of entry for processing:150806
[St] Status:MEDLINE

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[PMID]: 25580687
[Au] Autor:Schmeda-Hirschmann G; Quispe C; González B
[Ad] Address:Laboratorio de Química de Productos Naturales, Instituto de Química de Recursos Naturales, Universidad de Talca, Casilla 747, Talca, Chile. schmeda@utalca.cl.
[Ti] Title:Phenolic profiling of the South American "Baylahuen" tea (Haplopappus spp., Asteraceae) by HPLC-DAD-ESI-MS.
[So] Source:Molecules;20(1):913-28, 2015 Jan 08.
[Is] ISSN:1420-3049
[Cp] Country of publication:Switzerland
[La] Language:eng
[Ab] Abstract:The aerial parts of several Haplopappus species (Asteraceae), known under the common name "baylahuen", are used as herbal teas in Chile and Argentina. In Chile, "baylahuen" comprises H. multifolius, H. taeda, H. baylahuen and H. rigidus. Little is known about the chemical identity of the infusion constituents in spite of widespread consumption. The aim of the present work was the characterization of phenolics occurring in the infusions and methanol extracts of "baylahuen" by HPLC-DAD-ESI-MS. A simple HPLC-DAD-ESI-MS method was developed for the fast identification and differentiation of Haplopappus spp. used as a tea source, based on the phenolics from the tea and methanol extracts. Some 27 phenolics were tentatively identified in the infusions and methanol extract, including 10 caffeoyl quinic and feruloyl quinic acid derivatives and 17 flavonoids. The HPLC patterns of the Haplopappus tea and methanol extract allow a clear differentiation at the species level. The occurrence of hydroxycinnamic acid derivatives and flavonoids can explain the reputed nutraceutical and health beneficial properties of this herbal tea.
[Mh] MeSH terms primary: Chromatography, High Pressure Liquid/methods
Haplopappus/chemistry
Phenols/analysis
Spectrometry, Mass, Electrospray Ionization/methods
Tea/chemistry
[Mh] MeSH terms secundary: Biphenyl Compounds/chemistry
Chile
Flavonoids/analysis
Picrates/chemistry
Plant Extracts/analysis
Quinic Acid/analogs & derivatives
Quinic Acid/analysis
[Pt] Publication type:JOURNAL ARTICLE; RESEARCH SUPPORT, NON-U.S. GOV'T
[Nm] Name of substance:0 (Biphenyl Compounds); 0 (Flavonoids); 0 (Phenols); 0 (Picrates); 0 (Plant Extracts); 0 (Tea); 0 (caffeoylquinic acid); 058C04BGYI (Quinic Acid); DFD3H4VGDH (1,1-diphenyl-2-picrylhydrazyl)
[Em] Entry month:1509
[Cu] Class update date: 161125
[Lr] Last revision date:161125
[Js] Journal subset:IM
[Da] Date of entry for processing:150113
[St] Status:MEDLINE
[do] DOI:10.3390/molecules20010913

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[PMID]: 22948831
[Au] Autor:Ruffini Castiglione M; Gelati MT; Cremonini R; Frediani M
[Ad] Address:Dipartimento di Biologia, Università di Pisa, via L. Ghini, 56100, Pisa, Italy.
[Ti] Title:The intergenic spacer region of the rDNA in Haplopappus gracilis (Nutt.) Gray.
[So] Source:Protoplasma;250(3):683-9, 2013 Jun.
[Is] ISSN:1615-6102
[Cp] Country of publication:Austria
[La] Language:eng
[Ab] Abstract:In this paper, we provide further information on the genome organisation of Haplopappus gracilis, one of the six angiosperms showing the lowest chromosome number, i.e. 2n = 4, by determining the nucleotide sequence of the intergenic spacer region of the ribosomal RNA genes and its cytological localization on metaphase chromosomes. DNA sequence analysis reveals the occurring of a product of 4,382 bp in length, characterised by the presence of four blocks of different repeated sequences. Our analysis also evidenced putative promoter regions with three transcription initiation sites for polymerase I, as previously reported in Artemisia absinthium, belonging to the same Asteraceae family. A fluorescent in situ hybridization with the intergenic spacer probe indicates the presence of rDNA genes only in the satellited chromosomes of H. gracilis; besides, differences in the signal intensity between homologous chromosomes were frequently observed, thus suggesting for these chromosome sites the presence of a variable number of rDNA gene copies, even if a divergent chromatin organisation in corresponding regions cannot be ruled out.
[Mh] MeSH terms primary: DNA, Ribosomal Spacer/genetics
Genes, Plant
Haplopappus/genetics
[Mh] MeSH terms secundary: Base Sequence
Chromosome Mapping
Chromosomes, Plant
Molecular Sequence Annotation
Molecular Sequence Data
Promoter Regions, Genetic
RNA, Ribosomal/genetics
RNA, Ribosomal, 18S/genetics
RNA, Ribosomal, 5.8S/genetics
Sequence Analysis, DNA
Transcription Initiation Site
[Pt] Publication type:JOURNAL ARTICLE
[Nm] Name of substance:0 (DNA, Ribosomal Spacer); 0 (RNA, Ribosomal); 0 (RNA, Ribosomal, 18S); 0 (RNA, Ribosomal, 5.8S); 130527-23-0 (RNA, ribosomal, 25S)
[Em] Entry month:1312
[Cu] Class update date: 171012
[Lr] Last revision date:171012
[Js] Journal subset:IM
[Da] Date of entry for processing:120906
[St] Status:MEDLINE
[do] DOI:10.1007/s00709-012-0441-3

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[PMID]: 22611843
[Au] Autor:Bagchi S; Briske DD; Wu XB; McClaran MP; Bestelmeyer BT; Fernández-Giménez ME
[Ad] Address:Department of Ecosystem Science and Management, Texas A&M University, 2138 TAMU, College Station, Texas 77843, USA. sbagchi@ag.tamu.edu
[Ti] Title:Empirical assessment of state-and-transition models with a long-term vegetation record from the Sonoran Desert.
[So] Source:Ecol Appl;22(2):400-11, 2012 Mar.
[Is] ISSN:1051-0761
[Cp] Country of publication:United States
[La] Language:eng
[Ab] Abstract:Resilience-based frameworks, including state-and-transition models (STM), are being increasingly called upon to inform policy and guide ecosystem management, particularly in rangelands. Yet, multiple challenges impede their effective implementation: (1) paucity of empirical tests of resilience concepts, such as alternative states and thresholds, and (2) heavy reliance on expert models, which are seldom tested against empirical data. We developed an analytical protocol to identify unique plant communities and their transitions, and applied it to a long-term vegetation record from the Sonoran Desert (1953-2009). We assessed whether empirical trends were consistent with resilience concepts, and evaluated how they may inform the construction and interpretation of expert STMs. Seven statistically distinct plant communities were identified based on the cover of 22 plant species in 68 permanent transects. We recorded 253 instances of community transitions, associated with changes in species composition between successive samplings. Expectedly, transitions were more frequent among proximate communities with similar species pools than among distant communities. But unexpectedly, communities and transitions were not strongly constrained by soil type and topography. Only 18 transitions featured disproportionately large compositional turnover (species dissimilarity ranged between 0.54 and 0.68), and these were closely associated with communities that were dominated by the common shrub (burroweed, Haplopappus tenuisecta); indicating that only some, and not all, communities may be prone to large compositional change. Temporal dynamics in individual transects illustrated four general trajectories: stability, nondirectional drift, reversibility, and directional shifts that were not reversed even after 2-3 decades. The frequency of transitions and the accompanying species dissimilarity were both positively correlated with fluctuation in precipitation, indicating that climatic drivers require more attention in STMs. Many features of the expert models, including the number of communities and participant species, were consistent with empirical trends, but expert models underrepresented recent increases in cacti while overemphasizing the introduced Lehmann's lovegrass (Eragrostis lehmanniana). Quantification of communities and transitions within long-term vegetation records presents several quantitative metrics such as transition frequency, magnitude of accompanying compositional change, presence of unidirectional trajectories, and lack of reversibility within various timescales, which can clarify resilience concepts and inform the construction and interpretation of STMs.
[Mh] MeSH terms primary: Desert Climate
Ecosystem
Environmental Monitoring/methods
Models, Biological
Plants/classification
[Mh] MeSH terms secundary: Arizona
Conservation of Natural Resources
Plant Development
Population Dynamics
Time Factors
[Pt] Publication type:JOURNAL ARTICLE; RESEARCH SUPPORT, NON-U.S. GOV'T; RESEARCH SUPPORT, U.S. GOV'T, NON-P.H.S.
[Em] Entry month:1206
[Cu] Class update date: 121115
[Lr] Last revision date:121115
[Js] Journal subset:IM
[Da] Date of entry for processing:120523
[St] Status:MEDLINE

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[PMID]: 18615238
[Au] Autor:Ruffini Castiglione M; Frediani M; Venora G; Cremonini R
[Ad] Address:Dipartimento di Biologia, Università di Pisa, Via L. Ghini 5, Pisa, Italy. mruffini@biologia.unipi.it
[Ti] Title:Cytological investigation of Haplopappus gracilis (Nutt.) Gray: 5-methylcytosine-rich regions, fluorochrome banding and chromatin sensitivity to DNase I digestion.
[So] Source:Protoplasma;233(1-2):107-13, 2008.
[Is] ISSN:0033-183X
[Cp] Country of publication:Austria
[La] Language:eng
[Ab] Abstract:Haplopappus gracilis (Nutt.) Gray, one of the five known higher plants with a chromosome number of 2n = 4, was studied from a cytological point of view. The chromosome complement of this species was characterized by means of automated karyotype analysis. Moreover, the DNA methylation pattern and fluorochrome banding were determined and compared with cytological data present in the literature. DNA methylation distribution along metaphase chromosomes involved all chromosome territories evidenced by C-banding. Other methylated bands correlated positively with aceto-orcein-positive heterochromatic portions and/or with late replicating bands and/or fluorochrome bands. Some methylated bands showed differences between homologous chromosomes. These bands belonged partly to certain heterochromatic domains and partly to intercalary sites not defined by other standard banding techniques. Differences between the homologues were also indicated by our DNA content data obtained after DNase I digestion.
[Mh] MeSH terms primary: 5-Methylcytosine/metabolism
Chromatin/metabolism
Chromosome Banding
Chromosomes, Plant/metabolism
Deoxyribonuclease I/metabolism
Fluorescent Dyes/metabolism
Haplopappus/cytology
[Mh] MeSH terms secundary: DNA, Plant/metabolism
Haplopappus/metabolism
Interphase
Metaphase
[Pt] Publication type:JOURNAL ARTICLE
[Nm] Name of substance:0 (Chromatin); 0 (DNA, Plant); 0 (Fluorescent Dyes); 6R795CQT4H (5-Methylcytosine); EC 3.1.21.1 (Deoxyribonuclease I)
[Em] Entry month:0811
[Cu] Class update date: 171012
[Lr] Last revision date:171012
[Js] Journal subset:IM
[Da] Date of entry for processing:080711
[St] Status:MEDLINE
[do] DOI:10.1007/s00709-008-0296-9

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[PMID]: 17656041
[Au] Autor:Faini F; Labbé C; Torres R; Rodilla JM; Silva L; Delle Monache F
[Ad] Address:Departamento de Química, Facultad de Ciencias, Universidad de Chile, Las Palmeras 3425, Santiago, Chile. ffaini@uchile.cl
[Ti] Title:New phenolic esters from the resinous exudate of Haplopappus taeda.
[So] Source:Fitoterapia;78(7-8):611-3, 2007 Dec.
[Is] ISSN:0367-326X
[Cp] Country of publication:Netherlands
[La] Language:eng
[Ab] Abstract:Two new phenolic esters 9-trans-p-coumaroyloxy-alpha-terpineol (1) and 7-trans-p-coumaroyloxy-taedol (2), both endowed with free radical scavenger activity and cleroda-3,13 (E)-dien-15,18-diol (3) for which a cis stereochemistry at the decalin junction was found, were isolated from the resinous exudate from Haplopappus taeda upper parts.
[Mh] MeSH terms primary: Free Radical Scavengers/pharmacology
Haplopappus
Phytotherapy
Plant Extracts/pharmacology
[Mh] MeSH terms secundary: Biphenyl Compounds
Esters/administration & dosage
Esters/chemistry
Esters/pharmacology
Esters/therapeutic use
Free Radical Scavengers/administration & dosage
Free Radical Scavengers/chemistry
Free Radical Scavengers/therapeutic use
Humans
Inhibitory Concentration 50
Phenols/administration & dosage
Phenols/chemistry
Phenols/pharmacology
Phenols/therapeutic use
Picrates/chemistry
Plant Extracts/administration & dosage
Plant Extracts/chemistry
Plant Extracts/therapeutic use
Plant Leaves
[Pt] Publication type:JOURNAL ARTICLE; RESEARCH SUPPORT, NON-U.S. GOV'T
[Nm] Name of substance:0 (Biphenyl Compounds); 0 (Esters); 0 (Free Radical Scavengers); 0 (Phenols); 0 (Picrates); 0 (Plant Extracts); DFD3H4VGDH (1,1-diphenyl-2-picrylhydrazyl)
[Em] Entry month:0803
[Cu] Class update date: 161124
[Lr] Last revision date:161124
[Js] Journal subset:IM
[Da] Date of entry for processing:070728
[St] Status:MEDLINE

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[PMID]: 16684545
[Au] Autor:Torres R; Faini F; Modak B; Urbina F; Labbé C; Guerrero J
[Ad] Address:Departamento de Ciencias del Ambiente, Fascultad de Química y Biología, Universidad de Santiago de Chile, Avda. Bernardo O'Higgins 3363, Santiago, Chile. rtorres@lauca.usach.cl
[Ti] Title:Antioxidant activity of coumarins and flavonols from the resinous exudate of Haplopappus multifolius.
[So] Source:Phytochemistry;67(10):984-7, 2006 May.
[Is] ISSN:0031-9422
[Cp] Country of publication:England
[La] Language:eng
[Ab] Abstract:The antioxidant activity of eight coumarins and two flavonols isolated from Haplopappus multifolius was studied with the DPPH radical method. Results show that a high concentration of phenolic coumarins and the presence of quercetin and rhamnetin in the exudates could account for the protection of the plant against oxidative stress. Structures for the coumarins 6-hydroxy-7-[(E,E)-3',7'-dimethyl-2',4',7'-octatrienyloxy] coumarin and 7-[(E)-3'-methyl-4'-hydroxy-2'-butenyloxy] coumarin are proposed on the basis of spectroscopic evidence.
[Mh] MeSH terms primary: Antioxidants/chemistry
Coumarins/chemistry
Flavonols/chemistry
Haplopappus/chemistry
Resins, Plant/chemistry
[Mh] MeSH terms secundary: Antioxidants/isolation & purification
Antioxidants/pharmacology
Coumarins/isolation & purification
Coumarins/pharmacology
Flavonols/isolation & purification
Flavonols/pharmacology
Nuclear Magnetic Resonance, Biomolecular
Resins, Plant/pharmacology
[Pt] Publication type:JOURNAL ARTICLE; RESEARCH SUPPORT, NON-U.S. GOV'T
[Nm] Name of substance:0 (Antioxidants); 0 (Coumarins); 0 (Flavonols); 0 (Resins, Plant)
[Em] Entry month:0608
[Cu] Class update date: 061115
[Lr] Last revision date:061115
[Js] Journal subset:IM
[Da] Date of entry for processing:060511
[St] Status:MEDLINE

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[PMID]: 16619353
[Au] Autor:Speisky H; Rocco C; Carrasco C; Lissi EA; López-Alarcón C
[Ad] Address:Micronutrients Unit, Nutrition and Food Technology Institute and Faculty Chemical and Pharmaceutical Sciences, University of Chile, Santiago, Chile. hspeisky@inta.cl
[Ti] Title:Antioxidant screening of medicinal herbal teas.
[So] Source:Phytother Res;20(6):462-7, 2006 Jun.
[Is] ISSN:0951-418X
[Cp] Country of publication:England
[La] Language:eng
[Ab] Abstract:Herbal tea consumption is deeply and widely rooted amongst South-American populations. In view of the involvement of oxygen- and nitrogen-reactive species in the ethiogenesis of several diseases, the antioxidant properties of some of the herbal teas most commonly consumed in the southern regions was assessed in vitro. Around one-third of the 13 examined herbs, displayed a substantially higher ability to scavenge ABTS(+.) radicals (TEAC assay), and to quench the pro-oxidant species, hypochlorite (HClO) and peroxynitrite (ONOO(-)). Amongst the tested herbs, teas prepared from Haplopappus baylahuen, Rosa moschata and Peumus boldus showed the highest TEAC and HClO-quenching activities. These herbs were around 5- to 7-fold more potent than the least active herbs. Based on the TEAC assay, 150 mL of tea prepared from H. baylahuen, R. moschata and P. boldus would be equivalent to around 200 mg of Trolox). Teas from H. baylahuen and P. boldus were also found to be particularly potent in quenching HClO. In the ONOO(-) assay, H. baylahuen and Buddleia globosa showed the highest activities. The results obtained suggest that the regular consumption of teas prepared from some of these herbs may be useful potentially to provide the organism with molecules capable of protecting the gastrointestinal tract against certain pathologically relevant oxidant species.
[Mh] MeSH terms primary: Antioxidants/analysis
Plants, Medicinal/chemistry
[Mh] MeSH terms secundary: Beverages/utilization
Chile
Chromans/chemistry
Hypochlorous Acid/chemistry
Peroxynitrous Acid/chemistry
[Pt] Publication type:JOURNAL ARTICLE
[Nm] Name of substance:0 (Antioxidants); 0 (Chromans); 14691-52-2 (Peroxynitrous Acid); 712K4CDC10 (Hypochlorous Acid); S18UL9710X (6-hydroxy-2,5,7,8-tetramethylchroman-2-carboxylic acid)
[Em] Entry month:0609
[Cu] Class update date: 151119
[Lr] Last revision date:151119
[Js] Journal subset:IM
[Da] Date of entry for processing:060419
[St] Status:MEDLINE


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