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香椿的树木年轮宽度与超年生殖行为的相互关系:对树轮学研究的警示

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Journal of Plant Ecology 2024年第1期17卷 165-171页

作者： Monique Silva costa Thaís Jorge de Vasconcellos Claudio Sergio Lisi Arno Fritz Neves Brandes Mario Tomazello-Filho Cátia Henriques Callado Instituto de Aplicação Fernando Rodrigues da Silveira Universidade do Estado do Rio de JaneiroRua Barão de Itapagipe96.Rio Comprido 20261-005Rio de JaneiroBrazil Laboratório de Anatomia Vegetal Universidade do Estado do Rio de JaneiroRua São Francisco Xavier524Maracanã20550-013Rio de JaneiroBrazil departamento de Biologia Universidade Federal de SergipeAv.Marechal Rondon s/n-Rosa Elze.São Cristóvão 49100-000SergipeBrazil departamento de Biologia Geral Universidade Federal FluminenseRua Prof.Marcos Waldemar de Freitas ReisS/N.Gragoatá24210-201Rio de JaneiroBrazil Escola Superior de Agricultura Luiz de Queiroz Universidade de São PauloAv.Pádua Dias11.Piracicaba 13418-900São PauloBrazil

资源分配到生殖过程涉及到生态和进化因素,可能会减少植物的营养生长。这种相互关系在自然界中不容易观察到,因为有许多参数可以限制生殖结构的产生或生物量的增加。我们将香椿(Cedrela odorata L.,楝科)在里约热内卢州大西洋森林中的... 详细信息

资源分配到生殖过程涉及到生态和进化因素,可能会减少植物的营养生长。这种相互关系在自然界中不容易观察到,因为有许多参数可以限制生殖结构的产生或生物量的增加。我们将香椿(Cedrela odorata L.,楝科)在里约热内卢州大西洋森林中的树木年轮宽度与超年生殖行为相关联。总体而言,生殖结构的发育发生在湿润的年份,在生长季初期没有出现水分亏缺。然而,在这些年份,树木年轮宽度较小。这些结果可能与树木年轮宽度与当地气候之间缺乏相关性有关。因此,我们强调在径向生长研究中纳入生殖数据的重要性,以扩大对热带森林生长变异性的理解。

关键词：植物生长策略树木年轮学树木生态学生殖权衡

Epidemiology and Clinical Features of Mycobacterium avium Complex Pulmonary Disease in a Brazilian Amazon Cohort

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Advances in Microbiology 2024年第6期14卷 287-302页

作者： jose Tadeu Colares Monteiro Adriana Rodrigues Barretto Ruan Seguin Azevedo Quaresma Bianca Miranda Gouveia Ismari Perini Furlaneto Victória Menezes da costa Yan Corrêa Rodrigues Layana Rufino Ribeiro Ricardo J. de Paula Souza e Guimarães Alex Brito Souza Ana Roberta Fusco da costa Karla Valéria Batista Lima Joao de Barros Barreto University Hospital Federal University of Par Belm Brazil Center for Biological and Health Sciences Ph.D. Program in Parasitic Biology in the Amazon Region (PPGBPA) State University of Par (UEPA) Belm Brazil department of Medicine Centro Universitrio do Par CESUPA Belm Brazil Bacteriology and Mycology Section Evandro Chagas Institute (SABMI/IEC) Ministry of Health Ananindeua Brazil Geoprocessing Laboratory Evandro Chagas Institute/SVSA/MS Ananineua Brazil

The incidence of Mycobacterium avium complex pulmonary disease (MACPD) has been globally increasing. The present study aims to provide a comprehensive analysis of clinical characteristics and treatment response among patients in the Amazon region of Brazil and conduct a retrospective cohort study at a prominent referral hospital in the State of Par, Brazil, from 2012 to 2020. The M. avium group represented 58.9% of cases, followed by M. intracellulare (35.7%), M. colombiense (3.6%), and M. chimaera (1.8%). The majority of patients (73.2%) were female and with an average age of 63 years. Primary clinical manifestations included persistent cough and sputum production. The Charlson comorbidity index (CCI) averaged 2.47, with 36.3% of patients having a CCI score equal to higher than 3. Notably, over 70% of patients had received treatment for pulmonary tuberculosis before initiating treatment for MAC infection. The fibrocavitary radiologic form was the most prevalent (55.4%), frequently exhibiting a bilateral distribution (53.6%). Antimicrobial susceptibility revealed a significant prevalence of MAC resistance to drugs in the therapeutic regimen. despite this, most of the patients experienced clinical improvement (50%). In conclusion, this study highlights a higher prevalence of MAC infections among middle-aged women, with a history of pulmonary tuberculosis treatment and presenting the fibrocavitary radiological form was predominant.

关键词： MACDP Nontuberculous Mycobacteria Mycobacterium avium Lung Disease

The Drought of Amazonia in 2023-2024

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American Journal of Climate Change 2024年第3期13卷 567-597页

作者： jose A. Marengo Ana P. Cunha Jhan-Carlo Espinoza Rong Fu Jochen Schöngart Juan C. Jimenez Mabel C. costa Joao M. Ribeiro Sly Wongchuig Siyu Zhao National Center for Monitoring and Early Warning of Natural Disasters/CEMAdeN So Jos dos Campos Brazil UNESP/CEMAdeN So Jos dos Campos Brazil Graduate School of International Studies Korea University Seoul South Korea Institut des Gosciences de lEnvironnement (IGE) Institut de Recherche pour le Dvelopement (IRD) Saint Martin dHeres France Instituto de Investigacin sobre la Enseanza de las Matemticas (IREM PUCP) Pontificia Universidad Catlica del Per Lima Peru department of Atmospheric and Oceanic Sciences University of California Los Angeles Los Angeles CA USA departament of Environmental Dynamics Instituto Nacional de Pesquisas da Amaznia (INPA) Manaus Brazil Global Change Unit (GCU) of the Image Processing Laboratory (IPL) Universitat de Valncia Estudi General (UVEG) Paterna Spain Laboratoire detudes en Gophysique et Ocanographie Spatiales (LEGOS) Universit de Toulouse CNES/CNRS/IRD/UT3 Toulouse France

The Amazon basin has experienced an extreme drought that started in the austral summer of 2022-23 and extends into 2024. This drought started earlier than other previous droughts. Although some rain fell during the austral summer, totals remained below average. Higher temperatures during austral winter and spring 2023, which affected most of Central South America, then aggravated drought conditions. This coincided with an intense El Niño and abnormally warm tropical North Atlantic Ocean temperatures since mid-2023. decreased rainfall across the Amazon basin, negative anomalies in evapotranspiration (derived from latent heat) and soil moisture indicators, as well as increased temperatures during the dry-to-wet transition season, September-October-November (SON) 2023, combined to delay the onset of the wet season in the hydrological year 2023-24 by nearly two months and caused it to be uncharacteristically weak. SON 2023 registered a precipitation deficit of the order of 50 to 100 mm/month, and temperatures +3˚C higher than usual in Amazonia, leading to reduced evapotranspiration and soil moisture indicators. These processes, in turn, determined an exceptionally late onset and a lengthening of the dry season, affecting the 2023-2024 hydrological year. These changes were aggravated by a heat wave from June to december 2023. Drought-heat compound events and their consequences are the most critical natural threats to society. River levels reached record lows, or dried up completely, affecting Amazonian ecosystems. Increased risk of wildfires is another concern exacerbated by these conditions.

关键词： El Niño SST in the Tropical Atlantic Amazon Drought River Levels Heatwave Dry Season Length

Numerical Study on the Effect of Submerged depth on the Horizontal Plate Wave Energy Converter

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China Ocean Engineering 2014年第5期28卷 687-700页

作者： Flávio Medeiros SEIBT Eduardo costa COUTO Elizaldo Domingues dos SANTOS Liércio André ISOLDI Luiz Alberto Oliveira ROCHA Paulo Roberto de freitas TEIXEIRA Graduate Program of Ocean Engineering Universidade Federal do Rio Grande96203-900 Rio Grande RS Brazil Mechanical Engineering department Universidade Federal do Rio Grande do Sul90050-170 Porto Alegre RS Brazil

The growing search for clean and renewable energy sources has given rise to the studies of exploring sea wave energy. This paper is concerned with the numerical evaluation of the main operational principle of a submerged plate employed for the conversion of wave energy into electrical one. The numerical model used to solve the conservation equations of mass, momentum and transport of volume fraction is based on the finite volume method （FVM）. In order to tackle with the flow of mixture of air-water and its interaction with the device, the multiphase model volume of fluid （VOF） is employed. The purpose of this study is the evaluation of a numerical model for improvement of the knowledge about the submerged plate wave energy converter, as well as the investigation of the effect of the distance from the plate to the bottom of the sea （HP） on the performance of the converter. The simulations for several distances of the plate from the seabed show that the optimal efficiency is 64%, which is obtained for HP=0.53 m （88% of the depth）. This efficiency is 17% larger than that found in the worst case （HP=0.46 m, 77% of the depth）.

关键词： numerical simulation submerged plate wave energy conversion efficiency

The growth and production modeling of individual trees of Eucalyptus urophylla plantations

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Journal of Forestry Research 2020年第5期31卷 1663-1672页

作者： Joao Victor Nobre Carrijo Ana Beatriz de freitas Ferreira Marcela costa Ferreira Mario Cesar de Aguiar Eder Pereira Miguel Eraldo Aparecido Trondoli Matricardi Alba Valeria Rezende department of Forestry Faculty of TechnologyUniversity of Brası´liaBrası´lia 70910-900Brazil

Individual tree models(ITMs)are classified as growth and production models for projecting current and future forest *** are more complex than other growth and production models,show a higher level of detail and,consequently,produce a better modeling ***,the accuracy and efficiency of ITMs have not been properly assessed to *** this study,we estimated the growth in height,diameter,and individual tree volume of a Eucalyptus urophylla plantation by applying an *** used a continuing forest inventory dataset in which 1554 individual trees within 29 permanent plots were measured in the field over a 6-year period(24 to 72 months).Each individual tree volume was estimated for future tree *** achieve this,we adjusted the model to predict the height and diameter growth,and the probability of mortality as a function of the competition *** ITM accuracy was assessed based on the analysis of variance results and,subsequently,the multiple mean comparison test at the 5%significance *** tree volumes predicted by the ITM for the forest stand aged 72 months,beginning at ages 24,36,48,and 60 months,were compared to the field measured tree volume acquired from the 72-month forest inventory that was used as the reference *** and observed tree volumes were similar when the estimation was based on the 48-month forest *** results might help to reduce financial costs of forest inventory because the ITM produces accurate future predictions of forest stand *** estimated ITM for Eucalyptus plantations using measurement intervals up to 2 years is recommended because it significantly reduced the projected volume discrepancy compared to the field measurements.

关键词： Competition index Forest production Forest site Simulation models Tree mortality

Diversity of the endophytic filamentous fungal leaf community at different development stages of eucalyptus

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Journal of Forestry Research 2019年第3期30卷 1093-1103页

作者： Paulo Sergio Balbino Miguel Fabio Balbino Miguel Bruno Coutinho Moreira Marcelo Nagem Valerio de Oliveira Julio Cesar delvaux Fernanda de Souza freitas Arnaldo Chaer Borges Maurcio Dutra costa departamento de Medicina e Enfermagem Universidade Federal de VicosaVicosaMinas Gerais 36570-000Brazil departamento de Quimica Universidade Federal de Juiz de ForaJuiz de ForaMinas Gerais 36036-300Brazil Colegiado de Engenharia Agronomica Universidade Federal do Vale do Sao FranciscoPetrolinaPernambuco 56300-990 Brazil departamento de Ciencias Basicas da Vida Campus Governador Valadares Universidade Federal de Juiz de Fora Governador ValadaresMinas Gerais 35012-140Brazil Coordenacao Geral de Ensino Pesquisa e Extensao Instituto Federal do Triangulo MineiroItuiutabaMinas Gerais 38035-200Brazil departamento de Microbiologia Instituto de Biotecnologia Aplicada aAgropecuariaUniversidade Federal de Vicosa VicosaMinas Gerais 36570-000Brazil

Fungal endophytic species inhabiting the leaves of eucalypts are capable of utilising leaf sugars and can influence both plant growth and health. Endophytic fungal symbionts can use simple soluble sugars in leaves as their main carbon source. This study set out to determine the diversity and distribution of the endophytic filamentous fungal leaf community in the hybrid Eucalyptus urograndis due to its economic importance. The fungal leaf community was characterised using denaturing gradient electrophoresis (DGGE) and correlated with levels of leaf nutrients and sugars throughout plant development. Sequencing of DGGE bands revealed the presence of Basidiomycota and Ascomycota phyla. Fourteen species and three genera of filamentous fungi were identified, and the population structure was affected by the plant developmental stage. Levels of K, Cu, N and Mn influenced communities from the clonal garden, whereas leaves in the field had higher glucose, fructose and sucrose. Many fungi were found to be specific to a certain development stages: Diplomitoporus crustulinus, Podosphaera tridactyla and Aspergillus restrictus to the clonal garden stage;Chaetomella acutiseta and Ascotricha chartarum to the shading stage;Erratomyces patelii and Saxomyces sp. to the shading output stage;Lepidostroma sp. and Saxomyces sp. to the dispatch stage;and Mycosphaerella populicola to the field stage. Teratosphaeria toledana and Teratosphaeria acidotherma were found at more than one developmental stage. Cladosporium sp. and Rhodosporidium fluviale colonized and persisted in plants at the dispatch and field stages. This is the first report of P. tridactyla, A. restrictus, E. patelii, Saxomyces and Lepidostroma sp. as endophytes in eucalipt.

关键词： Diversity 18S rRNA denaturing gradient electrophoresis(DGGE) Sequencing

Antibacterial activity and inhibition against Staphylococcus aureus NorA efflux pump by ferulic acid and its esterified derivatives

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Asian Pacific Journal of Tropical Biomedicine 2021年第9期11卷 405-413页

作者： Patrícia Gonçalves Pinheiro Gilvandete Maria Pinheiro Santiago Francisco Erivaldo freitas da Silva Ana Carolina Justino de Araújo Cícera Rejane Tavares de Oliveira Priscilla Ramos freitas Janaína Esmeraldo Rocha JoséBezerra de Araújo Neto Maria Milene costa da Silva Saulo Relison Tintino Irwin Rose Alencar de Menezes Henrique Douglas Melo Coutinho JoséGalberto Martins da costa departamento de Química Biológica Programa de Pos-Graduação em Química BiológicaUniversidade Regional do Cariri–URCACrato–CEBrazil Programa de Pós-Graduação em Química Centro de CiênciasUniversidade Federal do Ceará–UFCFortaleza–CEBrazil

Objective:To evaluate the inhibitory activity of ferulic acid and four of its esterified derivatives(methyl,ethyl,propyl,and butyl)against resistance mechanisms in Staphylococcus aureus ***:Ferulic acid derivatives were obtained by esterification with methanol,ethanol,propanol,and butanol,and then characterized by hydrogen and carbon-13 nuclear magnetic resonance *** minimum inhibitory concentrations(MIC)of ferulic acid and its esterified derivatives,ethidium bromide,and norfloxacin were obtained using the microdilution test,while the efflux pump inhibition test was conducted by examining reduction in the MICs of norfloxacin and ethidium *** docking was also carried out using the Schrodinger Suite 2015 molecular modeling software.A three-dimensional model of NorA efflux pump was generated using *** best scoring model was used as a receptor for ligand-receptor ***:The methyl and butyl ester derivatives did not demonstrate significant antimicrobial ***,a significant synergic effect was evidenced when norfloxacin was combined with the ethyl and propyl esterified *** docking study demonstrated favorable energy of interaction between ferulate derivatives and NorA,and amino acid residues TYR57,TYR58,and LEU255 were present commonly in stabilizing all *** PCA analysis corroborated the docking hypothesis that the lipophilic character and hydrogen bond interactions were the most relevant characteristics involved with NorA *** pharmacokinetic parameters of ferulic acid derivatives showed good ADMET properties,demonstrating that they can be easily absorbed and have no effect or inhibit the cytochrome P450 enzyme complex,revealing their potential as drug ***:This study provides strong evidence that the molecular basis for this activity is potentially due to the NorA efflux pump.

关键词： Ferulic acid Esterified derivatives Efflux pump Staphylococcus aureus Resistance mechanisms

Association between the CYBA and NOX4 genes of NADPH oxidase and its relationship with metabolic syndrome in non-alcoholic fatty liver disease in Brazilian population

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Hepatobiliary & Pancreatic Diseases International 2018年第4期17卷 330-335页

作者： Fabiola Rabelo jose Tadeu Stefano Ana Mercedes Cavaleiro Rodrigo Vieira costa Lima Daniel Ferraz de Campos Mazo Flair jose Carrilho Maria Lúcia Correa-Giannellac Claudia P.Oliveiraa departamento de Gastroenterologia Faculdade de Medicina FMUSPUniversidade de Sao PauloSao PauloSPBrazil Hospital das Clinicas HCFMUSP Departamento de GastroenterologiaLIM07Faculdade de MedicinaUniversidade de Sao PauloSao PauloSPBrazil Laboratório de Carboidratos e Radioimunensaio LIM18Hospital das Clinicas HCFMUSP(LIM07)Faculdade de MedicinaUniversidade de Sao PauloSao PauloBrazil Programa de Pos-Graduacao em Medicina Universidade Nove de Julho(UNINOVE)Sao PauloBrazil

Background: Oxidative stress has been implicated in the progression of severe forms of non-alcoholic fatty liver disease(NAFLD). NADPH oxidase produces reactive oxygen species. In the present study, we investigated for the first time two single nucleotide polymorphisms(SNPs) in the regulatory region of genes encoding NADPH oxidase 4(NOX4) and p22 phox(CYBA) in ***: A total of 207 biopsy-proven NAFLD patients [simple steatosis(n = 27); nonalcoholic steatohepatitis(NASH)(n = 180)] were evaluated. Genomic DNA was extracted from peripheral blood cells, and polymorphisms in CYBA(unregistered) and NOX4(rs3017887) were determined by direct sequencing of ***: Associations of CYBA-675 T/A with high-density lipoprotein(HDL)(TT vs TA vs AA; P des(TGL)(TT vs XA; P degrees of fibrosis occurred in patients diagnosed with type 2 diabetes mellitus(66.9% vs 37.5%, P degrees of fibrosis in NAFLD patients.

关键词： Non-alcoholic fatty liver disease Nonalcoholic steatohepatitis Genetic polymorphism Metabolic syndrome

The Dynamic Pollen Tube Cytoskeleton： Live Cell Studies Using Actin-Binding and Microtubule- Binding Reporter Proteins

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Molecular Plant 2008年第4期1卷 686-702页

作者： Alice Y. Cheung Qiao-hong Duan Silvia Santos costa Barend H.J. de Graaf Veronica S. DiStilio jose Feijo Hen-Ming Wu department of Biochemistry and Molecular Biology Molecular Cell Biology Program Plant Biology Graduate Program University of Massachusetts Lederle Graduate Research Tower Amherst MA 01003 USA Instituto Gulbenkian de Ciencia Centro de Biologia de Desenvolvimento PT-2780-156 Oeiras Portugal Universidale de Lisboa Faculdade de Ciencias Dept. Biologia Vegetal Campo Grande Ed.C2. PT-1749-016 Lisboa Portugal Present address: School of Biosciences University of Birmingham Edgbaston B15 2TT UK Present address: department of Biology University of Washington Box 351800 Seattle WA 98195 USA

Pollen tubes elongate within the pistil to transport sperm cells to the embryo sac for fertilization. Growth occurs exclusively at the tube apex, rendering pollen tube elongation a most dramatic polar cell growth process. A hall- mark pollen tube feature is its cytoskeleton, which comprises elaborately organized and dynamic actin microfilaments and microtubules. Pollen tube growth is dependent on the actin cytoskeleton; its organization and regulation have been examined extensively by various approaches, including fluorescent protein labeled actin-binding proteins in live cell studies. Using the previously described GFP-NtADF1 and GFP-LIADF1, and a new actin reporter protein NtPLIM2b-GFP, we re-affirm that the predominant actin structures in elongating tobacco and lily pollen tubes are long, streaming actin cables along the pollen tube shank, and a subapical structure comprising shorter actin cables. The subapical collection of actin microfilaments undergoes dynamic changes, giving rise to the appearance of structures that range from basket- or funnel-shaped, mesh-like to a subtle ring. NtPLIM2b-GFP is used in combination with a guanine nucleotide exchange factor for the Rho GTPases, AtROP-GEF1, to illustrate the use of these actin reporter proteins to explore the linkage between the polar cell growth process and its actin cytoskeleton. Contrary to the actin cytoskeleton, microtubules appear not to play a direct role in supporting the polar cell growth process in angiosperm pollen tubes. Using a microtubule reporter protein based on the microtubule end-binding protein from Arabidopsis AtEB1, GFP-AtEB1, we show that the extensive microtubule network in elongating pollen tubes displays varying degrees of dynamics. These reporter proteins provide versatile tools to explore the functional connection between major structural and signaling components of the polar pollen tube growth process.

关键词： Dynamic Pollen Tube Cytoskeleton Live Cell Studies Using Actin-Binding Microtubule-Binding Reporter Proteins