Base de dados : MEDLINE
Pesquisa : B01.650.940.800.575.912.250.328.500.750 [Categoria DeCS]
Referências encontradas : 136 [refinar]
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[PMID]:29425008
[Au] Autor:Momot TV; Kushnerova NF; Rakhmanin YA
[Ti] Título:[Prevention of deteriorations of blood biochemical indices in experimental stress in rats].
[So] Source:Gig Sanit;95(7):678-81, 2016.
[Is] ISSN:0016-9900
[Cp] País de publicação:Russia (Federation)
[La] Idioma:rus
[Ab] Resumo:Results of the research of the impact of extract from the byproducts of guelder-rose, containing a complexflavonoides (65% of dry weight), in the conditions of experimental a stress (vertical fixing of rats by a dorsal cervicalfold for 22 o'clock) are presented. The impact of a stress was shown to be followed by the gain in mass of adrenal glands by 42%. In blood serum there were noted marked hypertriglyceridemia, hypercholesterolemia, increased superoxide dismutase activity, decline in the number of reduced glutathione and anti-radical activity, the gain in lisofractions of phospholipids, decrease of phosphatidylcholine, phosphatidylethanolamine, cholesterol esters. Administration of the extract from the byproducts of guelder rose crushing promoted the normalization of indices of mass of adrenal glands and lipid metabolism in blood serum, was more effective, than a reference stress protector "Extract eleuterokokka®". The introduction of eleuterococcus was followed by the persistent both elevated level of cholesterol, free fatty acids, lisofraction of phospholipidsand low level offatty acids esters, cholesterol esters and a diphosphatidilglicerin. Byproducts of guelder-rose were shown to represent a perspective view of raw materials for the producing of stress protective preparations.
[Mh] Termos MeSH primário: Glândulas Suprarrenais/patologia
Síndrome de Adaptação Geral
Metabolismo dos Lipídeos/efeitos dos fármacos
Fitoterapia/métodos
Extratos Vegetais/farmacologia
Viburnum
[Mh] Termos MeSH secundário: Animais
Colesterol/sangue
Síndrome de Adaptação Geral/sangue
Síndrome de Adaptação Geral/etiologia
Síndrome de Adaptação Geral/terapia
Tamanho do Órgão
Ratos
Estresse Fisiológico/efeitos dos fármacos
Estresse Fisiológico/fisiologia
Superóxido Dismutase/metabolismo
Resultado do Tratamento
Triglicerídeos/sangue
[Pt] Tipo de publicação:JOURNAL ARTICLE
[Nm] Nome de substância:
0 (Plant Extracts); 0 (Triglycerides); 97C5T2UQ7J (Cholesterol); EC 1.15.1.1 (Superoxide Dismutase)
[Em] Mês de entrada:1803
[Cu] Atualização por classe:180301
[Lr] Data última revisão:
180301
[Sb] Subgrupo de revista:IM
[Da] Data de entrada para processamento:180210
[St] Status:MEDLINE


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[PMID]:28318944
[Au] Autor:Nguyen TT; Truong BN; Doan Thi Mai H; Litaudon M; Nguyen VH; Do Thi T; Chau VM; Pham VC
[Ad] Endereço:Advanced Center for Bioorganic Chemistry, Institute of Marine Biochemistry, Vietnam Academy of Science and Technology, 18 Hoang Quoc Viet, Caugiay, Hanoi, Viet Nam; Institute of Chemistry, Vietnam Academy of Science and Technology, 18 Hoang Quoc Viet, Caugiay, Hanoi, Viet Nam.
[Ti] Título:Cytotoxic dammarane-type triterpenoids from the leaves of Viburnum sambucinum.
[So] Source:Bioorg Med Chem Lett;27(8):1665-1669, 2017 04 15.
[Is] ISSN:1464-3405
[Cp] País de publicação:England
[La] Idioma:eng
[Ab] Resumo:Four new dammarane-type triterpenoids (1-4) and twelve known compounds (5-16) were isolated from the leaves of Viburnum sambucinum Reinw. ex Blume. Their structures were determined by spectral data analysis, including MS and 2D NMR. Cytotoxic activity evaluation in vitro against four cancer cell lines (KB, LU-1, HepG2 and MCF7) suggested that the octanor-dammarane derivatives were the main cytotoxic components of the leaves of V. sambucinum.
[Mh] Termos MeSH primário: Antineoplásicos Fitogênicos/química
Antineoplásicos Fitogênicos/farmacologia
Triterpenos/química
Triterpenos/farmacologia
[Mh] Termos MeSH secundário: Antineoplásicos Fitogênicos/isolamento & purificação
Linhagem Celular Tumoral
Ensaios de Seleção de Medicamentos Antitumorais
Seres Humanos
Neoplasias/tratamento farmacológico
Folhas de Planta/química
Triterpenos/isolamento & purificação
Viburnum/química
[Pt] Tipo de publicação:JOURNAL ARTICLE; RESEARCH SUPPORT, NON-U.S. GOV'T
[Nm] Nome de substância:
0 (Antineoplastic Agents, Phytogenic); 0 (Triterpenes); 545-22-2 (dammarane)
[Em] Mês de entrada:1707
[Cu] Atualização por classe:171124
[Lr] Data última revisão:
171124
[Sb] Subgrupo de revista:IM
[Da] Data de entrada para processamento:170321
[St] Status:MEDLINE


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[PMID]:27307384
[Au] Autor:Mattei P; D'Acqui LP; Nicese FP; Lazzerini G; Masciandaro G; Macci C; Doni S; Sarteschi F; Giagnoni L; Renella G
[Ad] Endereço:Department of Agrofood Production and Environmental Sciences, University of Florence, P.le Delle Cascine 18, 50142 Florence, Italy.
[Ti] Título:Use of phytoremediated sediments dredged in maritime port as plant nursery growing media.
[So] Source:J Environ Manage;186(Pt 2):225-232, 2017 Jan 15.
[Is] ISSN:1095-8630
[Cp] País de publicação:England
[La] Idioma:eng
[Ab] Resumo:We evaluated the potential of a phytoremediated sediment (TR) dredged from maritime port as peat-free growth substrate for seven ornamental plants, in comparison with an untreated sediment (NT), in a greenhouse experiment. The studied plants were Quercus ilex, Photinia x fraseri, Viburnum tinus, Cistus albidus, Raphiolepis indica, Westringia fruticosa and Teucrium fruticans. Plant growth was monitored for ten months, and the changes in the physico-chemical properties, toxicity, microbial biomass and enzyme activities involved in the C, P and N cycles were also monitored during the plant growth period. The results showed that the studied ornamental plants could grow on both NT and TR sediments, but that the growth was higher on TR sediment. The plant growth induced changes in the sediment chemical functional groups, with clear separation between NT and TR sediments for each of the studied plant. Microbial biomass and enzyme activities significantly increased during the plant growth, more in TR than in NT sediment. Toxicity was detected in NT sediments during the plant growth whereas it was not observed in NT sediments during the whole growth period. We concluded that phytoremediation converted the dredged maritime sediments into suitable substrates for growing ornamental plants, and that the re-use by plant nursery industry can be a sustainable management and valorization for remediated sediments.
[Mh] Termos MeSH primário: Biodegradação Ambiental
Sedimentos Geológicos
Desenvolvimento Vegetal
[Mh] Termos MeSH secundário: Biomassa
Cistus/crescimento & desenvolvimento
Sedimentos Geológicos/química
Sedimentos Geológicos/microbiologia
Photinia/crescimento & desenvolvimento
Quercus/crescimento & desenvolvimento
Solo
Poluentes do Solo/química
Poluentes do Solo/toxicidade
Viburnum/crescimento & desenvolvimento
[Pt] Tipo de publicação:JOURNAL ARTICLE
[Nm] Nome de substância:
0 (Soil); 0 (Soil Pollutants)
[Em] Mês de entrada:1703
[Cu] Atualização por classe:171116
[Lr] Data última revisão:
171116
[Sb] Subgrupo de revista:IM
[Da] Data de entrada para processamento:160617
[St] Status:MEDLINE


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[PMID]:27076216
[Au] Autor:Konarska A
[Ad] Endereço:Department of Botany, Faculty of Horticulture and Landscape Architecture, University of Life Sciences in Lublin, Akademicka 15, 20-950, Lublin, Poland. agata.konarska@up.lublin.pl.
[Ti] Título:Comparative micromorphology and anatomy of flowers and floral secretory structures in two Viburnum species.
[So] Source:Protoplasma;254(1):523-537, 2017 Jan.
[Is] ISSN:1615-6102
[Cp] País de publicação:Austria
[La] Idioma:eng
[Ab] Resumo:In entomogamous plants, the presence and function of floral secretory structures, whose main role is to attract pollinators, is strictly associated with the pollination ecology and hence the reproductive success of the plant. The aims of the present paper were to analyse the micromorphology and anatomy of flower nectaries and stigmas in Viburnum opulus and V. lantana and to determine the function and microstructure of inflorescence trichomes in both taxa using light and scanning electron microscopy as well as histochemical assays. It was found that stigmas were formed by papillae, which contained lipids, polysaccharides, tannins, and pigments. Stigmatic secretion proceeded via cuticular pores. Floral nectaries formed a thick layer around the styles, and nectar was secreted through numerous nectarostomata. There were no traces of vascular bundles penetrating the nectary tissue. In turn, numerous tannin deposits were observed in the cells of the glandular parenchyma. Pedicels, hypanthia, and bracts had mainly peltate and capitate glandular trichomes as well as stellate non-glandular trichomes (in V. lantana). The trichomes were shown to contain lipids, mucilage, and tannins. Many similarities in the flower and nectaries microstructure and considerable heterogeneity were observed in the examined Viburnum species. Knowledge of the microstructural characteristics of flowers, nectaries, and trichomes may be important for the phylogenesis and taxonomy of the genus Viburnum and the family Adoxaceae. Additionally, floral and nectaries features are helpful in assessment of the relatedness between taxa and provide better understanding of the floral biology and pollination ecology.
[Mh] Termos MeSH primário: Flores/anatomia & histologia
Flores/ultraestrutura
Néctar de Plantas/metabolismo
Viburnum/anatomia & histologia
Viburnum/ultraestrutura
[Mh] Termos MeSH secundário: Inflorescência/anatomia & histologia
Inflorescência/ultraestrutura
Especificidade da Espécie
Tricomas/citologia
Tricomas/ultraestrutura
[Pt] Tipo de publicação:COMPARATIVE STUDY; JOURNAL ARTICLE
[Nm] Nome de substância:
0 (Plant Nectar)
[Em] Mês de entrada:1703
[Cu] Atualização por classe:170327
[Lr] Data última revisão:
170327
[Sb] Subgrupo de revista:IM
[Da] Data de entrada para processamento:160415
[St] Status:MEDLINE
[do] DOI:10.1007/s00709-016-0972-0


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[PMID]:26021767
[Au] Autor:Kato H; Onda Y; Hisadome K; Loffredo N; Kawamori A
[Ad] Endereço:Center for Research in Isotopes and Environmental Dynamics, University of Tsukuba, Japan. Electronic address: hiros980@ies.life.tsukuba.ac.jp.
[Ti] Título:Temporal changes in radiocesium deposition in various forest stands following the Fukushima Dai-ichi Nuclear Power Plant accident.
[So] Source:J Environ Radioact;166(Pt 3):449-457, 2017 Jan.
[Is] ISSN:1879-1700
[Cp] País de publicação:England
[La] Idioma:eng
[Ab] Resumo:In this study, we investigated the transfer of canopy-intercepted radiocesium to the forest floor following the Fukushima Dai-ichi Nuclear Power Plant accident. The Cs content of throughfall, stemflow, and litterfall were monitored in two coniferous stands (plantations of Japanese cedar) and a deciduous mixed broad-leaved forest stand (oak with red pine) from July 2011 to December 2012. The forest floor of cedar stands had received higher levels of additional Cs deposition compared with the mixed broad-leaved stand during the sampling period. The cumulative Cs deposition during the study period was 119 kBq m for the mature cedar stand, 105 kBq m for the young cedar stand, and 41.5 kBq m for the broad-leaved stand. The deposition of Cs to the forest floor occurred mainly in throughfall during the first rainy season, from July to September 2011 (<200 d after the initial fallout); thereafter, the transfer of Cs from the canopy to forest floor occurred mainly through litterfall. A double exponential field-loss model, which was used to simulate the removal of Cs from canopies, was the best fit for the temporal changes in the canopy Cs inventory.
[Mh] Termos MeSH primário: Radioisótopos de Césio/análise
Florestas
Acidente Nuclear de Fukushima
Cinza Radioativa
[Mh] Termos MeSH secundário: Cryptomeria
Japão
Pinus
Folhas de Planta
Caules de Planta
Quercus
Monitoramento de Radiação
Chuvas/química
Viburnum
[Pt] Tipo de publicação:JOURNAL ARTICLE
[Nm] Nome de substância:
0 (Cesium Radioisotopes); 0 (Radioactive Fallout)
[Em] Mês de entrada:1703
[Cu] Atualização por classe:170316
[Lr] Data última revisão:
170316
[Sb] Subgrupo de revista:IM
[Da] Data de entrada para processamento:150530
[St] Status:MEDLINE


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[PMID]:27647013
[Au] Autor:Saltan G; Süntar I; Ozbilgin S; Ilhan M; Demirel MA; Oz BE; Keles H; Akkol EK
[Ad] Endereço:Ankara University, Faculty of Pharmacy, Department of Pharmacognosy, 06100 Ankara, Turkey.
[Ti] Título:Viburnum opulus L.: A remedy for the treatment of endometriosis demonstrated by rat model of surgically-induced endometriosis.
[So] Source:J Ethnopharmacol;193:450-455, 2016 Dec 04.
[Is] ISSN:1872-7573
[Cp] País de publicação:Ireland
[La] Idioma:eng
[Ab] Resumo:ETHNOPHARMACOLOGICAL RELEVANCE: Endometriosis is a gynecological disorder characterized by the presence of endometrial tissue outside the uterine cavity. The fruits of Viburnum opulus L. have been used to treat gynecological disorders including primary and secondary dysmenorrhea and ovarian cysts. MATERIALS AND METHODS: Air-dried and powdered fruits of V. opulus were extracted sequentially with n-hexane, ethyl acetate (EtOAc), and methanol (MeOH), respectively for four days. Endometriosis was induced by suturing 15mm piece of endometrium into abdominal wall of Sprague Dawley rats. In second laparotomy, the dimensions of endometrial implants were measured and intra-abdominal adhesions were scored. The abdomen was closed. Extracts were daily administered to the rats. At the end of the experiment, rats were sacrified and endometriotic foci areas and intra-abdominal adhesions were re-evaluated. The tissues were also histopathologically investigated. Furthermore, tumor necrosis factor-α (TNF-α), vascular endothelial growth factor (VEGF) and interleukin-6 (IL-6) levels of peritoneal fluid were measured. HPLC analyses were conducted on the most potent EtOAc and MeOH extracts to determine the amount of the major compound, chlorogenic acid. RESULTS: The endometriotic volumes were found to be reduced significantly in the EtOAc extract-administered group to 30.1mm and in the MeOH extract-administered group to 34.7mm as compared to the control group. No adhesion was observed in the reference and EtOAc groups. Histopathological data also supported the results. Both EtOAc and MeOH extract-administered groups displayed significant remission in the levels of TNF-α, VEGF and IL-6. When the active extracts were subjected to HPLC analysis, chlorogenic acid was found to be the major compound and the amount of this compound was calculated as 0.5112±0.0012mg and 1.7072±0.0277mg/100mg extract, repectively. CONCLUSIONS: The results of the present study indicate that the effectiveness of the fruit extract of V. opulus could be partially attributed chlorogenic acid. Other phenolic compounds could potentiate the activity due to their amount.
[Mh] Termos MeSH primário: Endometriose/tratamento farmacológico
Endométrio/efeitos dos fármacos
Extratos Vegetais/farmacologia
Viburnum/química
[Mh] Termos MeSH secundário: Animais
Líquido Ascítico/metabolismo
Biópsia
Ácido Clorogênico/isolamento & purificação
Ácido Clorogênico/farmacologia
Cromatografia Líquida de Alta Pressão
Modelos Animais de Doenças
Endometriose/metabolismo
Endometriose/patologia
Endométrio/metabolismo
Endométrio/patologia
Endométrio/transplante
Feminino
Frutas/química
Interleucina-6/metabolismo
Fitoterapia
Extratos Vegetais/isolamento & purificação
Plantas Medicinais
Ratos Sprague-Dawley
Solventes/química
Fator de Necrose Tumoral alfa/metabolismo
Fator A de Crescimento do Endotélio Vascular/metabolismo
[Pt] Tipo de publicação:JOURNAL ARTICLE
[Nm] Nome de substância:
0 (Interleukin-6); 0 (Plant Extracts); 0 (Solvents); 0 (Tumor Necrosis Factor-alpha); 0 (Vascular Endothelial Growth Factor A); 0 (vascular endothelial growth factor A, rat); 318ADP12RI (Chlorogenic Acid)
[Em] Mês de entrada:1704
[Cu] Atualização por classe:170417
[Lr] Data última revisão:
170417
[Sb] Subgrupo de revista:IM
[Da] Data de entrada para processamento:160921
[St] Status:MEDLINE


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[PMID]:27140524
[Au] Autor:Hu J; Song Y; Mao X; Li H; Shi XD
[Ad] Endereço:a College of Biological Resources and Food Engineering , Qujing Normal University , Qujing 655011 , China.
[Ti] Título:Tetrahydrofuran lignans from Viburnum betulifolium.
[So] Source:J Asian Nat Prod Res;18(9):831-6, 2016 Sep.
[Is] ISSN:1477-2213
[Cp] País de publicação:England
[La] Idioma:eng
[Ab] Resumo:A phytochemical investigation of the EtOH extract from the aerial parts of Viburnum betulifolium Batal. afforded four new tetrahydrofuran lignans, betulifolium A-D (1, 2, 4, and 5), together with two known compounds vibsanol-9'-al (3) and sarcomeginal (6). This paper deals with the isolation and structure elucidation of the new compounds on the basis of spectroscopic methods, including 1D NMR, 2D NMR analyses and HR-ESI-MS data.
[Mh] Termos MeSH primário: Medicamentos de Ervas Chinesas/isolamento & purificação
Furanos/isolamento & purificação
Lignanas/isolamento & purificação
Viburnum/química
[Mh] Termos MeSH secundário: Benzofuranos/química
Benzofuranos/isolamento & purificação
Diterpenos/química
Medicamentos de Ervas Chinesas/química
Furanos/química
Lignanas/química
Estrutura Molecular
Ressonância Magnética Nuclear Biomolecular
[Pt] Tipo de publicação:JOURNAL ARTICLE
[Nm] Nome de substância:
0 (Benzofurans); 0 (Diterpenes); 0 (Drugs, Chinese Herbal); 0 (Furans); 0 (Lignans); 0 (sarcomeginal); 0 (vibsanol-9'-al); 3N8FZZ6PY4 (tetrahydrofuran)
[Em] Mês de entrada:1702
[Cu] Atualização por classe:170203
[Lr] Data última revisão:
170203
[Sb] Subgrupo de revista:IM
[Da] Data de entrada para processamento:160504
[St] Status:MEDLINE
[do] DOI:10.1080/10286020.2016.1173679


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[PMID]:26869099
[Au] Autor:Wang W; Song J; Shi G; Yu Q
[Ad] Endereço:Department of gastroenterology, Affiliated Zhongshan Hospital of Dalian University, Dalian, Liaoning 110042, China.
[Ti] Título:Cytotoxic nor-dammarane triterpenes from Viburnum hainanense Merr. et Chun.
[So] Source:Fitoterapia;110:8-12, 2016 Apr.
[Is] ISSN:1873-6971
[Cp] País de publicação:Netherlands
[La] Idioma:eng
[Ab] Resumo:Five new nor-dammarane triterpenes, 12ß-O-acetyl-17ß-hydoxy-3,15-dioxo-20,21,22,23,24,25,26,27-octanordammanran (1), 12ß-hydoxy-17ß-methoxy-3,15-dioxo-20,21,22,23,24,25,26,27-octanordammanran (2), 12ß-O-acetyl-3,15-dioxo-17-en-20,21,22,23,24,25,26,27-octanordammanran (3), 12ß-hydoxy-15α-O-acetyl-3-oxo-17-en-20,21,22,23,24,25,26,27-octanordammanran (4) and 3ß-hydoxy-17-oxo-12-en-20,21,22,23,24,25,26,27-octanordammanran (5), were obtained from the ethanol extract of the whole plants of Viburnum hainanense Merr. et Chun. Structural elucidation of all the compounds was performed by spectral methods such as 1D and 2D NMR, IR, UV, and HRESIMS. The isolated compounds were tested in vitro for cytotoxic potential against seven tumor cell lines (Hep-2, SCL-1, CAL-27, UMSCC-1, Detroit-562, SCC-PKU, and TCA-83). As result, compounds 1 and 2 exhibited cytotoxic activities with IC50 values less than 10 µM.
[Mh] Termos MeSH primário: Antineoplásicos Fitogênicos/farmacologia
Triterpenos/farmacologia
Viburnum/química
[Mh] Termos MeSH secundário: Antineoplásicos Fitogênicos/isolamento & purificação
Linhagem Celular Tumoral
Ensaios de Seleção de Medicamentos Antitumorais
Seres Humanos
Estrutura Molecular
Triterpenos/isolamento & purificação
[Pt] Tipo de publicação:JOURNAL ARTICLE
[Nm] Nome de substância:
0 (Antineoplastic Agents, Phytogenic); 0 (Triterpenes); 545-22-2 (dammarane)
[Em] Mês de entrada:1609
[Cu] Atualização por classe:160418
[Lr] Data última revisão:
160418
[Sb] Subgrupo de revista:IM
[Da] Data de entrada para processamento:160213
[St] Status:MEDLINE


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[PMID]:26808916
[Au] Autor:He J; Peng LY; Tu L; Wu XD; Dong LB; Pan ZH; Chen XQ; Su J; Zhao Y; Xu G; Cheng X; Li Y; Zhao QS
[Ad] Endereço:State Key Laboratory of Phytochemistry and Plant Resources in West China, Kunming Institute of Botany, Chinese Academy of Sciences, Kunming 650204, China.
[Ti] Título:Vibsane-type diterpenes from leaves and twigs of Viburnum odoratissimum.
[So] Source:Fitoterapia;109:224-9, 2016 Mar.
[Is] ISSN:1873-6971
[Cp] País de publicação:Netherlands
[La] Idioma:eng
[Ab] Resumo:Seven new vibsane-type diterpenes, vibsanols C-H (1-6) and vibsanin X (7), together with seven analogues, were isolated from the leaves and twigs of Viburnum odoratissimum. The structures of the new compounds were elucidated by extensive spectroscopic methods. All the new compounds were detected for their cytotoxicity. Compound 1 showed significant cytotoxicity against all the tested cell lines (HL-60, SMMC-7721, A-594, MCF-7, and SW-480), with IC50 values of 3.35, 4.41, 5.18, 11.30, and 3.70 µM, respectively. Compounds 4 and 5 also displayed significant cytotoxicity against hepatocellular carcinoma SMMC-7721 cell line, with IC50 values of 3.69 and 3.52 µM, respectively.
[Mh] Termos MeSH primário: Antineoplásicos Fitogênicos/química
Diterpenos/química
Viburnum/química
[Mh] Termos MeSH secundário: Antineoplásicos Fitogênicos/isolamento & purificação
Linhagem Celular Tumoral
Diterpenos/isolamento & purificação
Ensaios de Seleção de Medicamentos Antitumorais
Seres Humanos
Estrutura Molecular
Folhas de Planta/química
[Pt] Tipo de publicação:JOURNAL ARTICLE; RESEARCH SUPPORT, NON-U.S. GOV'T
[Nm] Nome de substância:
0 (Antineoplastic Agents, Phytogenic); 0 (Diterpenes); 0 (vibsanol C); 0 (vibsanol F); 0 (vibsanol G)
[Em] Mês de entrada:1607
[Cu] Atualização por classe:160301
[Lr] Data última revisão:
160301
[Sb] Subgrupo de revista:IM
[Da] Data de entrada para processamento:160126
[St] Status:MEDLINE


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[PMID]:26507271
[Au] Autor:Wyka TP; Karolewski P; Zytkowiak R; Chmielarz P; Oleksyn J
[Ad] Endereço:General Botany Laboratory, Department of Biology, Adam Mickiewicz University, ul. Umultowska 89, 61-614 Poznan, Poland twyka@amu.edu.pl.
[Ti] Título:Whole-plant allocation to storage and defense in juveniles of related evergreen and deciduous shrub species.
[So] Source:Tree Physiol;36(5):536-47, 2016 May.
[Is] ISSN:1758-4469
[Cp] País de publicação:Canada
[La] Idioma:eng
[Ab] Resumo:In evergreen plants, old leaves may contribute photosynthate to initiation of shoot growth in the spring. They might also function as storage sites for carbohydrates and nitrogen (N). We hence hypothesized that whole-plant allocation of carbohydrates and N to storage in stems and roots may be lower in evergreen than in deciduous species. We selected three species pairs consisting of an evergreen and a related deciduous species: Mahonia aquifolium (Pursh) Nutt. and Berberis vulgaris L. (Berberidaceae), Prunus laurocerasus L. and Prunus serotina Ehrh. (Rosaceae), and Viburnum rhytidophyllum Hemsl. and Viburnum lantana L. (Adoxaceae). Seedlings were grown outdoors in pots and harvested on two dates during the growing season for the determination of biomass, carbohydrate and N allocation ratios. Plant size-adjusted pools of nonstructural carbohydrates in stems and roots were lower in the evergreen species of Berberidaceae and Adoxaceae, and the slope of the carbohydrate pool vs plant biomass relationship was lower in the evergreen species of Rosaceae compared with the respective deciduous species, consistent with the leading hypothesis. Pools of N in stems and roots, however, did not vary with leaf habit. In all species, foliage contained more than half of the plant's nonstructural carbohydrate pool and, in late summer, also more than half of the plant's N pool, suggesting that in juvenile individuals of evergreen species, leaves may be a major storage site. Additionally, we hypothesized that concentration of defensive phenolic compounds in leaves should be higher in evergreen than in deciduous species, because the lower carbohydrate pool in stems and roots of the former restricts their capacity for regrowth following herbivory and also because of the need to protect their longer-living foliage. Our results did not support this hypothesis, suggesting that evergreen plants may rely predominantly on structural defenses. In summary, our study indicates that leaf habit has consequences for storage economics at the whole-plant level, with evergreen shrub species storing less carbohydrates (but not N) per unit plant biomass than deciduous species.
[Mh] Termos MeSH primário: Berberidaceae/metabolismo
Metabolismo dos Carboidratos
Nitrogênio/metabolismo
Prunus/metabolismo
Viburnum/metabolismo
[Mh] Termos MeSH secundário: Berberidaceae/crescimento & desenvolvimento
Biomassa
Raízes de Plantas/crescimento & desenvolvimento
Raízes de Plantas/metabolismo
Caules de Planta/crescimento & desenvolvimento
Caules de Planta/metabolismo
Prunus/crescimento & desenvolvimento
Árvores/crescimento & desenvolvimento
Árvores/metabolismo
Viburnum/crescimento & desenvolvimento
[Pt] Tipo de publicação:JOURNAL ARTICLE
[Nm] Nome de substância:
N762921K75 (Nitrogen)
[Em] Mês de entrada:1709
[Cu] Atualização por classe:170920
[Lr] Data última revisão:
170920
[Sb] Subgrupo de revista:IM
[Da] Data de entrada para processamento:151029
[St] Status:MEDLINE
[do] DOI:10.1093/treephys/tpv108



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