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Registros recuperados: 21
Primeira ... 12 ... Última
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A genomic approach to characterization of the Citrus terpene synthase gene family Genet. Mol. Biol.
Dornelas,Marcelo Carnier; Mazzafera,Paulo.
Terpenes are a very large and structurally diverse group of secondary metabolites which are abundant in many essential oils, resins and floral scents. Additionally, some terpenes have roles as phytoalexins in plant-pathogen relationships, allelopathic inhibitors in plant-plant interactions, or as airborne molecules of plant-herbivore multitrophic signaling. Thus the elucidation of the biochemistry and molecular genetics of terpenoid biosynthesis has paramount importance in any crop species. With this aim, we searched the CitEST database for clusters of expressed sequence tags (ESTs) coding for terpene synthases. Herein is a report on the identification and in silico characterization of 49 putative members of the terpene synthase family in diverse Citrus...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Secondary metabolism; Flavor; Aroma; Plant protection; Terpene synthesis.
Ano: 2007 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1415-47572007000500011
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Alkaloids and acetogenins in Annonaceae development: biological considerations Rev. Bras. Frutic.
González-Esquinca,Alma Rosa; De-La-Cruz-Chacón,Iván; Castro-Moreno,Marisol; Orozco-Castillo,José Agustín; Riley- Saldaña,Christian Anabi.
Chemical studies of the plant family Annonaceae have intensified in the last several decades due to the discovery of annonaceous molecules with medicinal potential (e.g., benzylisoquinoline alkaloids and acetogenins). Approximately 500 alkaloids have been identified in 138 Annonaceae species in 43 genera. In addition, until 2004, 593 annonaceous acetogenins (ACGs) had been identified, from 51 species in 13 genera.This suggests that plants from this family allocate important resources to the biosynthesis of these compounds. Despite the diversity of these molecules, their biological roles, including their physiological and/or ecological functions, are not well understood. In this study, it was provided new data describing the variety and distribution of...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Early development; Secondary metabolism; Ecological functions; Phenology.
Ano: 2014 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-29452014000500001
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An in silico analysis of the key genes involved in flavonoid biosynthesis in Citrus sinensis Genet. Mol. Biol.
Lucheta,Adriano R.; Silva-Pinhati,Ana Carla O.; Basílio-Palmieri,Ana Carolina; Berger,Irving J.; Freitas-Astúa,Juliana; Cristofani,Mariângela.
Citrus species are known by their high content of phenolic compounds, including a wide range of flavonoids. In plants, these compounds are involved in protection against biotic and abiotic stresses, cell structure, UV protection, attraction of pollinators and seed dispersal. In humans, flavonoid consumption has been related to increasing overall health and fighting some important diseases. The goals of this study were to identify expressed sequence tags (EST) in Citrus sinensis (L.) Osbeck corresponding to genes involved in general phenylpropanoid biosynthesis and the key genes involved in the main flavonoids pathways (flavanones, flavones, flavonols, leucoanthocyanidins, anthocyanins and isoflavonoids). A thorough analysis of all related putative genes...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Phenylpropanoids; Sweet orange; Expressed sequence tags (EST); Secondary metabolism.
Ano: 2007 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1415-47572007000500010
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Bicarbonato de sódio (NaHCO3) mantém a firmeza de frutos de bergamota 'Clementina' inoculados com Penicillium digitatum. Repositório Alice
CAMPONOGARA, T. T.; ROSSAROLLA, M. D.; AGUILA, L. S. H. D.; AGUILA, J. S. D.; RADMANN, E. B..
2013
Tipo: Artigo em periódico indexado (ALICE) Palavras-chave: Citrus sinensis (L.) Osbeck; Secondary metabolism.
Ano: 2013 URL: http://www.alice.cnptia.embrapa.br/handle/doc/981883
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Deficiência hídrica e aplicação de ABA nas trocas gasosas e no acúmulo de flavonoides em calêndula (Calendula officinalis L.) - doi: 10.4025/actasciagron.v33i2.6390 Agronomy
Pacheco, Ana Cláudia; UNOESTE; Castro, Paulo Roberto Camargo e; ESALQ /USP; Souza, Gustavo Maia; UNOESTE.
O objetivo deste trabalho foi avaliar os efeitos da deficiência hídrica e aplicação de ácido abscísico (ABA) sobre aspectos fisiológicos e teor de flavonoides em plantas de calêndula. O experimento foi instalado em condições de casa-de-vegetação com plantas envasadas. No início do florescimento de plantas de calêndula, foram aplicados quatro intervalos de suspensão da irrigação (irrigação diária; três; seis e nove dias sem irrigar), acompanhados por três doses de ABA (0, 10 e 100 µM). Avaliou-se o conteúdo relativo de água na folha (CRA) e as trocas gasosas, utilizando-se um analisador portátil por infravermelho (A: fotossíntese líquida, gs: condutância estomática, E: transpiração, Ci: concentração intercelular de CO2 e EUA: eficiência de uso da...
Palavras-chave: 2.03.03.00-9 planta medicinal; Estresse; Metabolismo secundário 5.01.03.06-7 medicinal plant; Stress; Secondary metabolism.
Ano: 2011 URL: http://periodicos.uem.br/ojs/index.php/ActaSciAgron/article/view/6390
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Genome sequence of Shewanella corallii strain A687 isolated from pufferfish (Sphoeroides spengleri) Genet. Mol. Biol.
Azevedo,Gustavo P.R.; Paz,Pedro H. C da; Mattsson,Hannah K.; Moreira,Ana Paula B.; Leomil,Luciana; Calegário,Gabriela; Appolinario,Luciana; Vidal,Lívia; Silva,Bruno S.; Tonon,Luciane A. Chimetto; Tschoeke,Diogo A.; Garcia,Gizele D.; Thompson,Fabiano L.; Thompson,Cristiane C..
Abstract We present here the genome sequence of Shewanella corallii strain A687 isolated from pufferfish Sphoeroides spengleri (Family Tetraodontidae). The assembly consists of 5,215,037 bp and contains 284 contigs, with a G+C content of 50.3%.
Tipo: Info:eu-repo/semantics/article Palavras-chave: Shewanella; Gammaproteobacteria; Genome; Gene prediction; Secondary metabolism.
Ano: 2020 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1415-47572020000100401
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Growth characteristics and phenylalanine ammonia-lyase activity in peach grafted on different Prunus spp. Repositório Alice
PEREIRA, I. dos S.; MESSIAS, R. da S.; CAMPOS, A. D.; ERREA, P.; ANTUNES, L. E. C.; FACHINELLO, J. C.; PINA, A..
2014
Tipo: Artigo em periódico indexado (ALICE) Palavras-chave: Phenylpropanoid pathway; Prunus mume; Prunus persica; Rootstock-scion compatibility; Secondary metabolism.
Ano: 2014 URL: http://www.alice.cnptia.embrapa.br/handle/doc/980737
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Homeopathic and larvicide effect of Eucalyptus cinerea essential oil against Aedes aegypti BABT
Cavalca,Patrícia Aparecida Mançano; Lolis,Maria Isabel Gomes de Assumpção; Reis,Bruno; Bonato,Carlos Moacir.
The aim of this work to study the homeopathic and larvicide effect of Eucalyptus cinerea essential oil on Aedes aegypti. Essential oil had high larvicide effect with LC50 and LC90 of 0.38 and 0.27 mg mL-1, respectively. Generally, the homeopathy of essential oil affected the A. aegypti development stages. Dynamizations 6CH, 9CH and 12CH reduced the mean number of larvae when compared to that of control. Mean number of mosquitoes decreased through homeopathic dynamization 30CH. Results showed that E. cinerea essential oil was highly promising and could be used in public health system for the control of A. aegypti.
Tipo: Info:eu-repo/semantics/article Palavras-chave: Ultra-diluted; Secondary metabolism; Biomass; Homeopathic drugs.
Ano: 2010 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-89132010000400012
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Homeopathic drugs Arsenicum album and Sulphur affect the growth and essential oil content in mint (Mentha arvensis L.) - DOI: 10.4025/actasciagron.v31i1.6642 Agronomy
Bonato, Carlos Moacir; UEM; Proença, Gentil Telles de; UEM; Reis, Bruno; UEM.
Effects of homeopathic drugs Sulphur and Arsenicum album in growth variables and essential oil content of mint are analyzed. Four homeopathic dinamizations (6, 12, 24 and 30CH) were used for both drugs in the centesimal scale (CH=centesimal hahnemannian), besides control (water). Treatments were conducted in greenhouse and homeopathic drugs applied weekly (250 mL vase-1) for 98 days. Plant height, root system’s dry mass, shoot’s dry mass and essential oil content were determined. Among the tested homeopathy drugs, Sulphur increased values of fresh and dry biomass more than Arsenicum album. Plant height increased by the two drugs and their respective dinamizations. Whereas Sulphur inhibited dry biomass production, except 6CH dinamization, it increased...
Palavras-chave: 5.02.01.07-7 Solos Florestais ultradiluted; Secondary metabolism; Biomass; Homeopathic drugs..
Ano: 2009 URL: http://periodicos.uem.br/ojs/index.php/ActaSciAgron/article/view/6642
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Infestation of froghopper nymphs changes the amounts of total phenolics in sugarcane Scientia Agricola
Silva,Rafael José Navas da; Guimarães,Eduardo Rossini; Garcia,José Francisco; Botelho,Paulo Sérgio Machado; Ferro,Maria Inês Tiraboschi; Mutton,Miguel Angelo; Mutton,Márcia Justino Rossini.
The increased rate of sugarcane harvest without previous burn has provided a very favorable environment to the froghopper Mahanarva fimbriolata (Stal, 1854), with high moisture and low temperature variation. Few works have studied the response of sugarcane to this pest, so little is known about resistant cultivars. Plant phenolics are widely studied compounds because of their known antiherbivore effect. This research aims to determine if the attack of M. fimbriolata nymphs stimulates the accumulation of total phenolics in sugarcane. The experiment was carried out in greenhouse and arranged in completely randomized design, in a 3 X 2 X 4 factorial with three replications. Second instar nymphs of M. fimbriolata were infested at the following rates: control,...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Saccharum spp; Phenolic compounds; Secondary metabolism; Plant-insect interaction.
Ano: 2005 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0103-90162005000600005
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Influence of photoperiod on the accumulation of allantoin in comfrey plants Rev. Bras. Fisiol. Veg.
CASTRO,ANA HORTÊNCIA FONSÊCA; YOUNG,MARIA CLÁUDIA MARX; ALVARENGA,AMAURI ALVES DE; ALVES,JOSÉ DONIZETI.
In order to evaluate the influence of photoperiod on the accumulation of allantoin in comfrey (Symphytum officinale L.), a well known medicinal plant, an experiment was conducted during July and August, 1998. Cuttings obtained from 90 day old plants were submitted to four photoperiods (8, 12, 16 and 20 hours). After 60 days, allantoin content in roots and rhizomes was evaluated. The results showed that increases in photoperiod promoted an increment in the average content of allantoin in roots (0.06%, 0.303%, 1.213% and 4.78%). On the other hand, in rhizomes, allantoin accumulation decreased (9.65%, 7.14%, 0.55%) when the photoperiod was increased from 8 to 12 and 16 hours, respectively, stabilizing on a 20-hour photoperiod (0.53%). Plants cultivated under...
Tipo: Info:eu-repo/semantics/article Palavras-chave: HPLC; Medicinal plant; Secondary metabolism; Symphytum officinale; Ureides.
Ano: 2001 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0103-31312001000100006
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Phenolic content and antioxidant activity of parts of Passiflora edulis as a function of plant developmental stage Acta Botanica
Guimarães,Sarah F.; Lima,Inorbert M.; Modolo,Luzia V..
ABSTRACT Passiflora edulis Sims var. flavicarpa O. Deg. (Yellow-passion fruit) is the native plant species most used by juice industries in Brazil while its leaf extracts are widely employed in folk medicine. This study evaluated the phenolic content of leaves, roots, fruit shells and pulp of plants of P. edulis in juvenile, flowering and fruiting stages. The extent of scavenging and/or degradation of reactive nitrogen and oxygen species by plant extracts was also investigated. Leaves were the organs that most accumulated phenolics/flavonoids, regardless of plant developmental stage. Leaf extracts efficiently scavenged DPPH by up to 67 % while root and fruit shell extracts effectively captured up to 80 % O2 -. Maximum activity of catalase (51.6 mmol H2O2...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Antioxidant enzymes; DPPH; Flavonoids; Passion fruit; Secondary metabolism; Superoxide anion.
Ano: 2019 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0102-33062019005006104
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Production of rhizomes, content and composition of essential oil of accessions of turmeric in response to nitrogen. Repositório Alice
OKA, J. M.; CHAVES, F. C. M.; BERNI, R.; CUNHA, A. L. B. da; BIZZO, H. R.; GAMA, P. E..
Turmeric (Curcuma longa L.) is a perennial species of lateral growth of the same family as ginger Zingiberaceae. Its rhizomes are widely used by diverse populations in the world, both for culinary purposes for medicated with which is mainly due to active principles and other compounds present. Nutritional imbalance can affect both the production and the composition and content of essential oil as well as its composition. The present study aimed to evaluate the effect of nitrogen on the production, content and composition of essential oil from three accessions of turmeric.
Tipo: Resumo em anais de congresso (ALICE) Palavras-chave: Curcuma longa; Nitrogen fertilization; Biomass; Secondary metabolism.
Ano: 2015 URL: http://www.alice.cnptia.embrapa.br/handle/doc/1028636
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Production of rhizomes, content and composition of essential oil of accessions of turmeric in response to nitrogen. Repositório Alice
OKA, J. M.; CHAVES, F. C. M.; BERNI, R.; CUNHA, A. L. B. da; BIZZO, H. R.; GAMA, P. E..
2015
Tipo: Resumo em anais de congresso (ALICE) Palavras-chave: Curcuma longa L; Nitrogen fertilization; Biomass; Secondary metabolism.
Ano: 2015 URL: http://www.alice.cnptia.embrapa.br/handle/doc/1029346
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Radiation levels of UV-A and UV-B on growth parameters and coumarin content in guaco Ciência Rural
Alves,Luciano; Deschamps,Cícero.
ABSTRACT: Guaco is a medicinal plant species containing coumarin, a secondary metabolite whose concentration is influenced by various factors, such as the level of exposure to UVA (315-400 nm) and UVB (280-315 nm) radiation, age of the plant, and position of the storage organ in the plant. This study aimed to assess the effect of different blocking levels of UVA and UVB radiation on growth parameters and coumarin content of two guaco accessions. Treatments did not affect any of the growth parameters assessed, except leaf area. Coumarin content was higher in leaves collected from the upper canopy and with unblocked exposure to UVA and UVB.
Tipo: Info:eu-repo/semantics/article Palavras-chave: Mikania glomerata Spreng; 1-2-benzopyrone; Secondary metabolism; Growth analysis; Environmental factors.
Ano: 2019 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0103-84782019000600403
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Somaclonal variation: a morphogenetic and biochemical analysis of Mandevilla velutina cultured cells BJMBR
Maraschin,M.; Sugui,J.A.; Wood,K.V.; Bonham,C.; Buchi,D.F.; Cantao,M.P.; Carobrez,S.G.; Araujo,P.S.; Peixoto,M.L.; Verpoorte,R.; Fontana,J.D..
Cell cultures of Mandevilla velutina have proved to be an interesting production system for biomass and secondary metabolites able to inhibit the hypotensive activity of bradykinin, a nonapeptide generated in plasma during tissue trauma. The crude ethyl acetate extract of cultured cells contains about 31- to 79-fold more potent anti-bradykinin compounds (e.g., velutinol A) than that obtained with equivalent extracts of tubers. Somaclonal variation may be an explanation for the wide range of inhibitor activity found in the cell cultures. The heterogeneity concerning morphology, differentiation, carbon dissimilation, and velutinol A production in M. velutina cell cultures is reported. Cell cultures showed an asynchronous growth and cells in distinct...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Mandevilla velutina; Secondary metabolism; Plant cell cultures; Somaclonal variation; Phytosteroid; Anti-bradykinin compounds.
Ano: 2002 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-879X2002000600002
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Taxus globosa S. cell lines: Initiation, selection and characterization in terms of growth, and of baccatin III and paclitaxel production Biocell
Barradas-Dermitz,Dulce Ma.; Hayward-Jones,Patricia M.; Mata-Rosas,Martín; Palmeros-Sánchez,Beatriz; Platas-Barradas,Oscar B. J.; Velásquez-Toledo,Rodolfo F..
Of the initial six cell lines originating from explants of Taxus globosa, or Mexican yew (stem internode, leaves and meristematic tissue), three were selected for their microbial and oxidation resistance, two from leaves and the other from stem internode. A study of their behavior, both in terms of cell growth, and of baccatin III and paclitaxel production, was developed in suspension cultures with an initially standardized biomass (fresh weight 0.23 g/L) using modified Gamborg's B5 medium, and an elicitor (methyl jasmonate), on either the first or seventh day of culture, at several levels (0, 0.1, 1, 10, 100 μM). In most of the conditions used, the three cell lines showed growth associated baccatin III production. The cell line from stem...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Growth-associated metabolites; Methyl jasmonate; Paclitaxel precursor; Secondary metabolism; Suspension cell culture.
Ano: 2010 URL: http://www.scielo.org.ar/scielo.php?script=sci_arttext&pid=S0327-95452010000100001
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The genome of Eucalyptus grandis. Repositório Alice
MYBURG, A. A.; GRATTAPAGLIA, D.; TUSKAN, G. A.; HELLSTEN, U.; HAYES, R. D.; GRIMWOOD, J.; JENKINS, J.; LINDQUIST, E.; BAUER, D.; BAUER, D.; GOODSTEIN, D. M.; DUBCHAK, I.; POLIAKOV, A.; MIZRACHI, E.; KULLAN, A. R. K.; HUSSEY, S. G.; PINARD, D.; MERWE, K. van der; SINGH, P.; JAARSVELD, I. van; SILVA JUNIOR, O. B.; TOGAWA, R. C.; PAPPAS, M. R.; FARIA, D. A.; SANSALONI, C. P.; PETROLI, C. D.; YANG, X.; RANJAN, P.; TSCHAPLINSKI, T. J.; YE, C.-Y.; LI, T.; STERCK, L.; VANNESTE, K.; MURAT, F.; SOLER, M.; SAN CLEMENTE, H.; SAIDI, N.; CASSAN-WANG, H.; DUNAND, C.; HEFER, C. A.; BORNBERG-BAUER, E.; KERSTING, A. R.; VINING, K.; AMARASINGHE, V.; RANIK, M.; NAITHANI, S.; ELSER, J.; BOYD, A. E.; LISTON, A.; SPATAFORA, J. W.; DHARMWARDHANA, P.; RAJA, R.; SULLIVAN, C.; ROMANEL, E.; ALVES-FERREIRA, M.; KULHEIM, C.; FOLEY, W.; CAROCHA, V.; PAIVA, J.; KUDRNA, D.; BROMMONSCHENKEL, S. H.; PASQUALI, G.; BYRNE, M.; RIGAULT, P.; SPOKEVICIUS, A.; JONES, R. C.; STEANE, D. A.; VAILLANCOURT, R. E.; POTTS, B. M.; JOUBERT, F.; BARRY, K.; PAPPAS JUNIOR, G. J.; STRAUSS, S. H.; JAISWAL, P.; GRIMA-PETTENATI, J.; SALSE, J.; PEER, Y. van de; ROKHSAR, D. S.; SCHMUTZ, J..
2014
Tipo: Artigo em periódico indexado (ALICE) Palavras-chave: Eucalyptus grandis; Secondary metabolism; Genome evolution; Phylogenomics; Biofuels.
Ano: 2014 URL: http://www.alice.cnptia.embrapa.br/handle/doc/1006198
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Tolerance to stress and environmental adaptability of Chromobacterium violaceum. Repositório Alice
HUNGRIA, M.; NICOLAS, M.F.; GUIMARAES, C. T.; JARDIM, S. N.; GOMES, E. A.; VASCONCELOS, A.T.R. de..
Chromobacterium violaceum is a Gram-negative bac-terium, abundant in a variety of ecosystems in tropical and subtropical regions, including the water and borders of the Negro River, a major component of the Amazon Basin. As a free-living microorganism, C. violaceum is exposed to a series of variable conditions, such as differ-ent sources and abundance of nutrients, changes in temperature and pH, toxic compounds and UV rays. These variations, and the wide range of enviranments, require great adaptability and strong protective systems. The complete genome sequencing of this bacterium has revealed an enormous number and variety of ORFs associated with altemative path-ways for energy generation, transpon-related proteins, signal transduc-tion, cell motility,...
Tipo: Artigo em periódico indexado (ALICE) Palavras-chave: Adaptability; Secondary metabolism; Stress tolerance; Chromobacterium.
Ano: 2004 URL: http://www.alice.cnptia.embrapa.br/handle/doc/488336
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Water deficit effect on the accumulation of biomass and artemisinin in annual wormwood (Artemisia annua L., Asteraceae). Repositório Alice
MARCHESE, J. A.; FERREIRA, J. F. S.; REHDE, V. L. G.; RODRIGUES, O..
2010
Tipo: Artigo em periódico indexado (ALICE) Palavras-chave: Malária; Metabolismo secundário; Terpenos; Estiagem; Estresse hídrico; Secondary metabolism; Terpene; Drought; Water stress.
Ano: 2010 URL: http://www.alice.cnptia.embrapa.br/handle/doc/926521
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