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Circulating leptin and its muscle gene expression in Nellore cattle with divergent feed efficiency

Journal of Animal Science and Biotechnology 2018年第1期9卷 228-232页

作者： Lúcio Flávio Macedo Mota Cristina Moreira Bonafé Pamela Almeida Alexandre Miguel Henrique Santana Francisco JoséNovais erika Toriyama Aldrin Vieira Pires Saulo da Luz Silva Paulo Roberto Leme JoséBento Sterman Ferraz Heidge Fukumasu departmento de zootecnia Universidade Federal dos Vales do Jequitinhonha e MucuriDiamantinaMG 39100 000Brazil Faculdade de Ciencias Agrarias e Veterinarias Universidade Estadual Paulista JaboticabalSP 14884 900Brazil departamento de Medicina Veterinaria Faculdade de Zootecnia e Encjenharia de AlimentosUniversidade de Sao PauloAM.Duque de Caxias Norte n225Pirassununcja 13635 900SPBrazil departmento de zootecnia e desenvolvimento Acjrossocioambiental Sustentavel Faculdade de VeterinariaUniversidade Federal FluminenseNiteroiRJ 24230 340Brazil departamento de zootecnia Faculdade de Zootecnia e Engenharia de AlimentosUniversidade de Sao PauloPirassununga 13635-900SPBrazil

Background： Leptin has a strong relation to important traits in animal production, such as carcass composition,feed intake, and reproduction. It is mainly produced by adipose cells and acts predominantly in the *** this study, circulating leptin and its gene expression in muscle were evaluated in two groups of young Nellore bulls with divergent feed efficiency. Individual dry matter intake（DMI） and average daily gain（ADG） of 98 Nellore bulls were evaluated in feedlot for 70 d to determinate the residual feed intake（RFI） and select 20 animals for the high feed efficient（LRFI） and 20 for the low feed efficient（HRFI） groups. Blood samples were collected on d 56 and at slaughter（80 d） to determine circulating plasma leptin. Samples of Longissimus dorsi were taken at slaughter for leptin gene expression ***： DMI and RFI were different between groups and LRFI animals showed less back fat and rump fat thickness,as well as less pelvic and kidney fat weight. Circulating leptin increased over time in all animals. Plasma leptin was greater in LRFI on 56 d and at slaughter（P = 0.0049）. Gene expression of leptin were greater in LRFI animals（P = 0.0022） in accordance with the plasma levels. The animals of the LRFI group were leaner, ate less, and had more circulating leptin and its gene ***： These findings demonstrated that leptin plays its physiological role in young Nellore bulls, probably controlling food intake because feed efficient animals have more leptin and lower residual feed intake.

关键词： Beef cattle energy homeostasis Fat depositon Residual feed intake

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Assessing the relationship between the rumen microbiota and feed efficiency in Nellore steers

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Journal of Animal Science and Biotechnology 2021年第4期12卷 1645-1661页

作者： Déborah Romaskevis Gomes Lopes Márcio de Souza Duarte Alex J.La Reau Ibrahim Zuniga Chaves Tiago Antônio de Oliveira Mendes edenio detmann Cláudia Braga Pereira Bento Maria eugênia Zerlotti Mercadante Sarah Figueiredo Martins Bonilha Garret Suen Hilário Cuquetto Mantovani departamento de Microbiologia Universidade Federal de ViçosaViçosaMG 36570-900Brazil departamento de zootecnia Universidade Federal de ViçosaViçosaMinas GeraisBrazil department of Bacteriology University of Wisconsin-MadisonMadisonWIUSA departamento de Bioquímia e Biologia Molecular Universidade Federal de ViçosaViçosaMinas GeraisBrazil Instituto de zootecnia Centro APTA Bovinos de CorteSertãozinhoSão PauloBrazil

Background:Ruminants rely upon a complex community of microbes in their rumen to convert host-indigestible feed into ***,little is known about the association between the rumen microbiota and feed efficiency traits in Nellore(Bos indicus)cattle,a breed of major economic importance to the global beef ***,we compare the composition of the bacterial,archaeal and fungal communities in the rumen of Nellore steers with high and low feed efficiency(Fe)phenotypes,as measured by residual feed intake(RFI).Results:The Firmicutes to Bacteroidetes ratio was significantly higher(Pe-RFI steers(p-RFI,low feed efficiency)than in negative-RFI(n-RFI,high feed efficiency)*** differences in bacterial composition from steers with high and low Fe were mainly associated with members of the families Lachnospiraceae,Ruminococcaceae and Christensenellaceae,as well as the genus *** community richness was lower(Peers and the genus Methanobrevibacter was either increased or exclusive of p-RFI *** fungal genus Buwchfawromyces was more abundant in the rumen solid fraction of n-RFI steers(Pelonging to the genus Piromyces was also increased in the rumen microbiota of highefficiency ***,analysis of rumen fermentation variables and functional predictions indicated similar metabolic outputs for the microbiota of distinct Fe ***:Our results demonstrate that differences in the ruminal microbiota of high and low Fe Nellore steers comprise specific taxa from the bacterial,archaeal and fungal *** OTUs belonging to the genus Piromyces were identified in animals showing high feed efficiency,whereas among archaea,Methanobrevibacter was associated with steers classified as *** identification of specific RFI-associated microorganisms in Nellore steers could guide further studies targeting the isolation and functional characterization

关键词： Beef cattle ITS1 region Next-generation sequencing RFI Rumen microbiota 16S rRNA gene

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Boll weevils in dry bolls:is there a performance disadvantage?

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Journal of Cotton Research 2024年第3期7卷 243-252页

作者： COeLHO Beatriz S. LeITe Suzany A. SANTOS Mateus P.dos MATeS eloito C.de MORAeS Beatriz M.L.de BASTOS Cristina S. GUedeS Raul N.C. MOReIRA Aldenise A. CASTeLLANI Maria A. departamento de fitotecnia e zootecnia Universidade Estadual do Sudoeste da BahiaVitória da ConquistaBA 45031‑900Brazil Faculdade de Agronomia e Veterinária Universidade de BrasíliaBrasíliaDF 70910‑900Brazil departamento de entomologia Universidade Federal de ViçosaViçosaMG 36570‑900Brazil Pós‑GraduaCão em Agronomia(fitotecnia) Universidade Estadual do Sudoeste da BahiaVitória da ConquistaBA 45031‑900Brazil

Background Anthonomus grandis grandis is the main cotton pest in the Americas,with the potential to become a pest in other *** insect uses the plant's reproductive organs for feeding,oviposition,and survival strategies in the off-season,sheltering in dry *** study aimed to know the reproductive potential,feeding,longevity,and morphometric characteristics of boll weevils from dry bolls,squares,and *** were obtained from infested squares,dry bolls,and traps installed in cotton fields and the Caatinga *** weevil pairs were maintained in the laboratory to assess the oviposition,feeding holes,longevity,and morphometric measurements of the parental and F_(1) *** In the parental generation,boll weevils from traps(the Caatinga area and cotton cultivation)showed greater reproductive *** weevils from squares and the Caatinga area showed greater feeding activity compared with those from cotton *** rostrum length,thorax+abdomen length,and abdomen width were observed in boll weevils from cotton cultivation and dry *** origin of boll weevils parental generation did not affect progeny emergence *** F_(1) generation of boll weevils showed significant differences in average longevity depending on the origin of different ***,differences in rostrum lengths were observed,with the boll weevils coming from traps installed in cotton cultivation,the Caatinga area,and dry bolls being the *** thorax+abdomen length and abdomen width,the highest values were observed in those from the Caatinga area and cotton *** It was proven that dry bolls did not affect the reproductive,feeding,and longevity performance of boll weevils,enabling better insect fitness(reproduction and size)in relation to those coming from *** use of dry bolls as off-season shelter is an important survival strategy for the boll weevil.

关键词： Anthonomus grandis grandis Gossypium hirsutum Off-season Survival

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Chondrogenic potential of mesenchymal stem cells from horses using a magnetic 3D cell culture system

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World Journal of Stem Cells 2021年第6期13卷 645-658页

作者： Joice Fülber Fernanda R Agreste Sarah R T Seidel eric D P Sotelo Ângela P Barbosa Yara M Michelacci Raquel Y A Baccarin departamento de Clínica Médica Medicina Veterinária e ZootecniaUniversidade de São PauloSão Paulo 05506-270Brazil departamento de Bioquímica Escola Paulista de MedicinaUniversidade Federal de São PauloSão Paulo 04044-020Brazil

BACKGROUND Mesenchymal stem cells(MSCs)represent a promising therapy for the treatment of equine joint diseases,studied due to their possible immunomodulatory characteristics and regenerative ***,the source of most suitable MSCs for producing cartilage for regenerative processes in conjunction with biomaterials for an enhanced function is yet to be *** To compare the chondrogenicity of MSCs derived from synovial fluid,bone marrow,and adipose tissue of horses,using the aggrecan *** MSCs from ten horses were cultured,phenotypic characterization was done with antibodies CD90,CD44 and CD34 and were differentiated into *** 3D cell culture system in which biocompatible nanoparticles consisting of gold,iron oxide,and poly-L-lysine were added to the cells,and they were forced by magnets to form one *** microspheroids were exposed to a commercial culture medium for 4 d,7 d,14 d,and 21 *** extraction was performed,and aggrecan was quantified by enzyme-linked immunosorbent *** sulfate and aggrecan in the microspheroids were identified and localized by *** All cultured cells showed fibroblast-like appearance,the ability to adhere to the plastic surface,and were positive for CD44 and CD90,thus confirming the characteristics and morphology of *** soluble protein concentrations were higher in the microspheroids derived from adipose *** aggrecan concentration and the ratio of aggrecan to soluble proteins were higher in microspheroids derived from synovial fluid than in those derived from bone marrow,thereby showing chondrogenic *** from all sources expressed aggrecan and keratan sulfate when observed using confocal immunofluorescence *** sources of MSCs can synthesize aggrecan,however,MSCs from synovial fluid and adipose tissue have demonstrated better biocompatibility in a 3D environment,thus suggesting chondrogenic superiority

关键词： Cellular therapy Chondrocytes Aggrecan Keratan sulfate

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Impact of hormonal modulation at proestrus on ovarian responses and uterine gene expression of suckled anestrous beef cows

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Journal of Animal Science and Biotechnology 2018年第1期9卷 77-90页

作者： Manoel Francisco de Sá Filho Angela Maria Gonella-Diaza Mariana Sponchiado Marcio Ferreira Mendanha Guilherme Pugliesi Roney dos Santos Ramos Sónia Cristina da Silva Andrade Gustavo Gasparin Luiz Lehmann Coutinho Marcelo demarchi Goissis Fernando Silveira Mesquita Pietro Sampaio Baruselli Mario Binelli departamento de Reproducao Animal FMVZ USP Sao Paulo SP Brazil departamento de Genetica e Biologia evolutiva IB-USP- Sao Paulo SP Brazil Laboratorio de Biotecnologia Animal ESALQ USP Av Padua Dias Piracicaba SP 11 Brazil Universidade Federal do Pampa Uruguaiana RS Brazil Universidade de Sao Paulo Faculdade de Medicina Veterinriae Zootecnia Departamento de Reprodcao Animal Avenida Duque de Caxias Norte 225 Pirassununga SP Zip Code 13635900 Brazil

Background： This study evaluated the impact of hormonal modulation at the onset of proestrus on ovarian response and uterine gene expression of beef ***： A total of 172 anestrous beef cows were assigned to one of four groups according to the treatment with estradiol cypionate（eCP） and/or equine chorionic gonadotropin（eCG） [CON（n = 43）, eCP（n = 43）, eCG（n = 44）and eCP ＋ eCG（n = 42）].Results： eCP-treated cows（eCP and eCP ＋ eCG groups） presented greater occurrence of estrus（44.6% vs. 65.4%; P = 0.01） and pregnancy per AI [47.1% vs. 33.3%; P = 0.07], but similar progesterone（P4） concentration at subsequent diestrus than cows not treated with eCP（CON and eCG groups）. Nonetheless, eCG-treated cows（eCG and eCP ＋ eCG groups） presented larger follicle at timed AI（12.6 ± 0.3 vs. 13.5 ± 0.3 mm; P = 0.03）, greater ovulation rate（96.5%vs. 82.6%; P = 0.008） and greater P4 concentration at d 6（3.9 ± 0.2 vs. 4.8 ± 0.2 ng/mL; P = 0.001） than cows not treated with eCG（CON and eCP groups）. Next, cows with a new corpus luteum 6 d after TAI were submitted to uterine biopsy procedure. Uterine fragments [CON（n = 6）, eCP（n = 6）] were analyzed by RNA-Seq and a total of 135 transcripts were differentially expressed between groups（73 genes up-regulated by eCP treatment）. Subsequently,uterine samples were analyzed by q PCR（genes associated with cell proliferation）. eCP treatment induced greater abundance of PTCH2（P = 0.07） and COL4 A1（P = 0.02）, whereas suppressed eGFR（P = 0.09） expression. Conversely, eCG treatment increased abundance of HB-eGF（P = 0.06）, eSR2（P = 0.09）, and ITGB3（P = 0.05）, whereas it reduced transcription of eSR1（P = 0.05）. Collectively, supplementation with eCP or eCG at the onset of proestrous of anestrous beef cows influenced ovarian responses, global and specific endometrial gene ***： Proestrus estradiol regulate the endometrial transcriptome, particularly stimulating proliferative activity in the endometrium.

关键词： Cattle eCG endometrium estradiol Transcriptome

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Remodeling of the cell wall as a drought-tolerance mechanism of a soybean genotype revealed by global gene expression analysis

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aBIOTeCH 2021年第1期2卷 14-31页

作者： Flaviane Silva Coutinho Juliano Mendonça Rodrigues Lucas Leal Lima Rosilene Oliveira Mesquita Paola Avelar Carpinetti João Paulo Batista Machado Camilo elber Vital Pedro Marcus Vidigal Maria eduarda Soares Ramos Mariana Rocha Maximiano Angela Mehta Maria Goreti Almeida Oliveira elizabeth Pacheco Batista Fontes Humberto Josuéde Oliveira Ramos departamento de Bioquímica e Biologia Molecular Universidade Federal de ViçsaViçsaMinas GeraisBrazil departamento de fitotecnia Universidade Federal do CearáFortalezaCearáBrazil Núcleo de Análise de Biomoléculas(NuBioMol) Universidade Federal de ViçsaViçsaMinas GeraisBrazil Instituto de Ciéncias Agrárias Universidade Federal de ViçsaFlorestalMinas GeraisBrazil embrapa Recursos Genéticos e Biotecnologia BrasíliaDFBrazil Universidade Federal de Juiz de Fora Juiz de ForaMinas GeraisBrazil

Drought stress is major abiotic stress that affects soybean ***,it is widely desirable that soybean becomes more tolerant to *** provide insights into regulatory mechanisms of the stress response,we compared the global gene expression profiles from leaves of two soybean genotypes that display different responses to water-deficit(BR 16 and embrapa 48,drought-sensitive and droughttolerant,respectively).After the RNA-seq analysis,a total of 5335 down-regulated and 3170 up-regulated genes were identified in the *** the other hand,the number of genes differentially expressed was markedly lower in the embrapa 48,355 up-regulated and 471 down-regulated ***,induction and expression of protein kinases and transcription factors indicated signaling cascades involved in the drought ***,the results suggest that the metabolism of pectin is differently modulated in response to drought stress and may play a role in the soybean defense mechanism against *** occurs via an increase of the cell wall plasticity and crosslink,which contributed to a higher hydraulic conductance(Kf)and relative water content(RWC%).The drought-tolerance mechanism of the embrapa 48 genotype involves remodeling of the cell wall and increase of the hydraulic conductance to the maintenance of cell turgor and metabolic processes,resulting in the highest leaf RWC,photosynthetic rate(A),transpiration(e)and carboxylation(A/Ci).Thus,we concluded that the cell wall adjustment under drought is important for a more efficient water use which promoted a more active photosynthetic metabolism,maintaining higher plant growth under drought stress.

关键词： Gene expression RNA-seq Molecular physiology Water-use efficiency

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Worker laying in leafcutter ant Acromyrmex subterraneus brunneus （Formicidae, Attini）

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Insect Science 2007年第2期14卷 157-163页

作者： ROBeRTO S. CAMARGO LUIZ C. FORTI JULIANe F. S. LOPeS NeWTON C. NORONHA ANGeLO L. T. OTTATI departamento de Producāo Vegetal FCA/UNESP Botucatu SP Campus Universitário Paulo VI Sāo Luis MA Brazil. Comportamento e Biologia Animal Instituto de Ciencias Biológicas Universidade Federal de Juiz de Fora Campus Universitário Martelos Juiz de Fora MG Campus Universitário Paulo VI Sāo Luis MA Brazil. departamento de entomologia Fitopatologia e Zoologia Agricola Escola Superior de Agricultura 'Luiz de Queiroz' Universidade de Sao Paulo Piracicaba SP Campus Universitário Paulo VI Sāo Luis MA Brazil. departamento de fitotecnia e Fitossanidade Universidade Estadual do Maranhāo Centro de Ciencias Agrenias Campus Universitário Paulo VI Sāo Luis MA Brazil.

We studied the process of offspring production in queenless colonies of Acromyrmex subterraneus brunneus, and particularly evaluated the ovary development of workers as a function of their age. For this, subcolonies were set up and evaluated at different periods of isolation from the queen （2, 4 and 6 months）, besides individually labeled age groups. The subcolonies were assessed according to offspring production and ovaries containing oocytes or not. The evaluations showed worker oviposition and development of males originating from worker-laid eggs. At 2 months＇ absence of the queen, eggs and larvae were found, with eggs in a higher proportion than larvae. After 4 months, the proportion of eggs had reduced while larvae had increased, and a pupa was found in one subcolony. At 6 months, besides a higher share of larvae, one pupa and one adult male were found. Dissection of workers revealed ovaries containing oocytes during the periods of evaluation. Only a group of medium-sized and large workers, 23.3%, 20.9% and 37.5% of the population from each period assessed in queenless subcolonies respectively, presented developed oocytes in the ovary. The same was observed in colonies with a queen, with 17.6%, 19.6% and 7.8% of the group of dissected workers from each time period, respectively. With respect to worker age, we observed by dissection of the ovary, that the greatest percentage of individuals with ovarioles containing oocytes occurred at 45 days （6 weeks） up to 90 days （12 weeks）. These results probably are associated with the workers reproduction and the laying of trophic and reproductive eggs in colonies with and without a queen; these eggs have distinct functions in each situation.

关键词： leafcutter ant queenless ant colonies reproduction conflict worker laying,worker reproduction

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Application of Molecularly Imprinted Polymers for the Analysis of Pesticide Residues in Food—A Highly Selective and Innovative Approach

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American Journal of Analytical Chemistry 2011年第8期2卷 16-25页

作者： Raquel Garcia Maria Joao Cabrita Ana Maria Costa Freitas Instituto de Ciencias Agrarias e Ambientais Mediterranicas Departamento de FitotecniaEscola de Ciencias e TecnologiaUniversidade de EvoraEvoraPortugal

The increasing application of pesticides for agricultural purposes involves serious risk to the environment and human health due to either exposure or through residues in food and drinking water. Since food safety is of mandatory importance there is a growing interest on the development of selective, simple, rapid, cost-effective and reliable analytical methodologies in order to ensure that pesticides residues should not be found at levels above the established maximum pesticide residue limits (MRLs). In recent years, a new methodology based on the development of molecularly imprinting polymers (MIPs) allows not only pre-concentration and cleaning of the sample but also selective extraction of the target analyte, which is crucial, particularly when the sample is complex and impurities can interfere with quantification. The scope of this review is to provide a general overview on MIPs field, with emphasis on MIP preparation and its use as sorbents for solid-phase extraction. This paper will be focused on the review of the current state of the art in the use of MIPs as selective materials in molecularly imprinted solid-phase extraction (MISPe) for the analysis of pesticide residues from food matrices. A review of preparation and application of MIPs in food matrices, will also be discussed.

关键词： Molecularly Imprinted Polymer Pesticide Residues Food

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High throughput sequencing unravels tomato-pathogen interactions towards a sustainable plant breeding

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Horticulture Research 2021年第1期8卷 2416-2427页

作者： Maria Doroteia Campos Maria do Rosario Felix Mariana Patanita Patrick Materatski Carla Varanda MeD–Mediterranean Institute for Agriculture Environment and DevelopmentInstituto de Investigacao e Formaçao AvancadaUniversidade de EvoraPolo da MitraAp.947006-554 EvoraPortugal MeD–Mediterranean Institute for Agriculture Environment and Development&Departamento de FitotecniaEscola de Ciencias e TecnologiaUniversidade de EvoraPolo da MitraAp.947006-554 EvoraPortugal

Tomato(Solanum lycopersicum)is one of the most economically important vegetables throughout the *** is one of the best studied cultivated dicotyledonous plants,often used as a model system for plant research into classical genetics,cytogenetics,molecular genetics,and molecular *** plants are affected by different pathogens such as viruses,viroids,fungi,oomycetes,bacteria,and nematodes,that reduce yield and affect product *** study of tomato as a plant-pathogen system helps to accelerate the discovery and understanding of the molecular mechanisms underlying disease resistance and offers the opportunity of improving the yield and quality of their edible *** use of functional genomics has contributed to this purpose through both traditional and recently developed techniques,that allow the identification of plant key functional genes in susceptible and resistant responses,and the understanding of the molecular basis of compatible interactions during pathogen ***-generation sequencing technologies(NGS),which produce massive quantities of sequencing data,have greatly accelerated research in biological sciences and offer great opportunities to better understand the molecular networks of plant–pathogen *** this review,we summarize important research that used high-throughput RNA-seq technology to obtain transcriptome changes in tomato plants in response to a wide range of pathogens such as viruses,fungi,bacteria,oomycetes,and *** findings will facilitate genetic engineering efforts to incorporate new sources of resistance in tomato for protection against pathogens and are of major importance for sustainable plant-disease management,namely the ones relying on the plant’s innate immune mechanisms in view of plant breeding.

关键词： breeding sustainable quantities

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High aluminum concentration and initial establishment of Handroanthus impetiginosus : clues about an Al non-resistant species in Brazilian Cerrado

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Journal of Forestry Research 2020年第6期31卷 2075-2082页

作者： Ane Marcela das Chagas Mendon ca Jean Marcel Sousa Lira Ana Luiza de Oliveira Vilela Daniel Amorim Vieira Nayara Cristina de Melo Joao Paulo Rodrigues Alves delfi no Barbosa Programa de Pós-Graduacao em Fisiologia Vegetal Departamento de BiologiaUniversidade Federal de LavrasLavrasMG 37200-000Brazil Programa de Pós-Graduacao em Ciências Ambientais Instituto de Ciências ExatasUniversidade Federal de AlfenasAlfenasMG 37130-001Brazil Programa de Pós-Graduacao em fitotecnia Departamento de AgriculturaUniversidade Federal de LavrasLavrasMG 37200-000Brazil Instituto Federal de educacao Ciência e Tecnologia do Pará BelémPA 66093-020Brazil

Cerrado soils are acidic and nutrient-poor,with high content of solubilized Al 3+.Plants growing in these conditions may display adaptations to cope with high aluminum concentrations especially during early developmental *** investigated leaf nutritional status,and photosynthetic and growth characteristics during the initial establishment of Handroanthus impetiginosus(*** Dc.)Mattos,a secondary tree species distributed in the Brazilian *** goal was to understand leaf-level traits related to diff erent aluminum *** plants were cultivated in four diff erent aluminum sulfate concentrations:0,1,2,and 4 mM Al,for 40 *** performed analyses of growth,leaf gas exchange,chloroplast pigment content,and leaf mineral *** observed a linear increase of Al leaf content as a function of Al concentration in the nutrient *** grown in 1 mM Al showed a remarkable increase of K leaf content,net photosynthesis,stomatal conductance,and transpiration,while in 4 mM Al there were reductions of N,P,and K contents,gas exchange characteristics,and *** did not have mechanisms of avoidance,compartmentalization,or resistance to high Al ***,this species showed a hormetic response,with low Al concentrations stimulating and high Al concentrations inhibiting plant responses.

关键词： Hormesis Low Al concentration Al toxicity Cerrado species Carbon assimilation

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