Research Article

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Animals; Calcium-Binding Proteins; Calpain; Cattle; Gene frequency; Genetic markers; Genotype; Polymorphism, Single Nucleotide; Quantitative trait loci; Red Meat

The objectives of this study were to characterize the allelic and genotypic frequencies of polymorphisms in the µ-calpain and calpastatin genes, and to assess their association with meat tenderness and animal growth in Nellore cattle. We evaluated 605 Nellore animals at 24 months of age, on average, at slaughter. The polymorphisms were determined for the molecular markers CAPN316, CAPN530, ... more

M.E. Carvalho; J.P. Eler; M.N. Bonin; F.M. Rezende; F.H. Biase; F.V. Meirelles; L.C.A. Regitano; L.L. Coutinho; J.C.C. Balieiro; J.B.S. Ferraz
2017 Feb 16
Animals; Brazil; Conservation of Natural Resources; Female; Gene frequency; Genotype; male; Microsatellite Repeats; Sexual Behavior, Animal; Turtles

The aim of the present study was to investigate the reproductive behavior of the giant Amazon River turtle (Podocnemis expansa) in the Amazon. This was carried out by estimating the degree of polymorphism in five DNA microsatellites in a sample of 359 hatchlings from 12 nests in the Mamirauá Sustainable Development Reserve in the municipality of Tefé, state of Amazonas, Brazil. An analysis of ... more

C. Fantin; J. Morais; R. Botero-Arias; C. Araújo; C. Camillo; I.P. Farias
2017 Feb 23
Adult; Asian Continental Ancestry Group; China; Female; Gene frequency; Genetic predisposition to disease; Genotype; Humans; Interleukin-10; Interleukin-6; Logistic Models; Odds Ratio; Polymerase chain reaction; Polymorphism, Restriction Fragment Length; Polymorphism, Single Nucleotide; Pre-eclampsia; Pregnancy; Promoter Regions, Genetic; Risk factors; Young Adult

Preeclampsia is a common condition unique to pregnant women. Previous studies have suggested that several cytokines may contribute to defective placental invasion and endothelial damage in this condition. We investigated the influence of four single nucleotide polymorphisms (SNPs) in the promoters of IL-6 (-572G/C, -597G/A, and -174G/C) and IL-10 (-592A/C) on susceptibility to preeclampsia in ... more

D.M. Fan; Y. Wang; X.L. Liu; A. Zhang; Q. Xu
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Animals; Bayes Theorem; Breeding; Genetic markers; Genomics; Genotype; Models, Genetic; Polymorphism, Single Nucleotide; Predictive Value of Tests; Quantitative trait loci; Regression Analysis; Selection, Genetic

Genomic selection (GS) is a variant of marker-assisted selection, in which genetic markers covering the whole genome predict individual genetic merits for breeding. GS increases the accuracy of breeding values (BV) prediction. Although a variety of statistical models have been proposed to estimate BV in GS, few methodologies have examined statistical challenges based on non-normal phenotypic ... more

M. Nascimento; F.F.E. Silva; M.D.V. de Resende; C.D. Cruz; A.C.C. Nascimento; J.M.S. Viana; C.F. Azevedo; L.M.A. Barroso
2017 Mar 22
Animals; Crosses, Genetic; Disease resistance; Genotype; Hemiptera; Lycopersicon esculentum; Pest Control, Biological; Pheromones; Plant breeding; Plant Diseases; Tetranychidae

The mini tomato production has expanded, becoming an amazing alternative for enterprise. Despite all commercial potential, the cultivation has the occurrence of pests as main obstacle during the crop development. Nowadays, there are no researches that aimed obtaining genotypes with high acylsugar content, capable of providing a broad-spectrum resistance to pests. This study aimed the selection ... more

G.M. Maciel; R.S. Almeida; J.P.R. da Rocha; V. Andaló; G.R. Marquez; N.C. Santos; R.R. Finzi
2017 Mar 16
Animals; Disease resistance; Genotype; Host-Parasite Interactions; Multivariate analysis; Phaseolus; Plant Diseases; Plant Roots; Random Allocation; seeds; Tylenchoidea

The availability of common bean cultivars tolerant to Meloidogyne javanica is limited in Brazil. Thus, the present study aimed to evaluate the reactions of 33 common bean genotypes (23 landrace, 8 commercial, 1 susceptible standard and 1 resistant standard) to M. javanica, employing multivariate statistics to discriminate the reaction of the genotypes. The experiment was conducted in a ... more

L.N.S. Santos; P.D.S. Cabral; G.A.R. Neves; F.R. Alves; M.B. Teixeira; F.N. Cunha; N.F. Silva
2017 Mar 16
Animals; Base Sequence; Conserved sequence; Disease resistance; Evolution, Molecular; Genetic markers; Genetic variation; Genotype; Microsatellite Repeats; Phylogeny; Plant Diseases; Plant Proteins; Psidium; Tylenchoidea

Guava (Psidium guajava L.) crop is severely affected by the nematode Meloidogyne enterolobii. Native Psidium species have been reported as sources of resistance against this nematode. Knowledge on the molecular relationship between Psidium species based on plant resistance gene analogs (RGA) can be useful in the genetic breeding of guava for resistance to M. enterolobii. In this study, RGA ... more

L.R. Noia; A.C. Tuler; A. Ferreira; M.F.S. Ferreira
2017 Mar 30
Alleles; Animals; Brazil; Breeding; Chromosome Mapping; DNA; Genetic Drift; Genetic variation; Genetics, Population; Genotype; Goats; Heterozygote; Microsatellite Repeats

The aim of this study was to access the genetic diversity and relatedness between Canindé and British Alpine goat breeds in the States of Piauí and Ceará using microsatellite markers. Genomic DNA was isolated from hair samples of 99 goats belonging to six different flocks. A panel of polymorphic heterologous microsatellite loci was used to genotype individuals. The microsatellite markers ... more

T.S. Câmara; J.F. Nunes; F.M. Diniz; G.R. Silva; A.M. Araújo
2017 Apr 13
Fruit; Genetic variation; Genotype; Lycopersicon esculentum; Plant breeding; Quantitative Trait, Heritable

The tomato is the second most produced vegetable in the world, with significant participation in the human diet. In addition, the production of tomatoes generates jobs and family income. The availability of improved cultivars that provide greater profitability to the producer and satisfactorily meets the needs of the fresh fruit market and the processing industry becomes imperative due to its ... more

J.V.M. Peixoto; deM.S. Neto; L.F.C. Campos; deS. Dourado; A.P.O. Nogueira; D.R. Nascimento
2017 Apr 13
Agricultural Irrigation; Coffea; Crops, Agricultural; Genetic variation; Genotype; Quantitative Trait, Heritable

The use of supplementary irrigation to sustain the plantation during moments of severe water stress or moments of high water demand is becoming almost a norm to keep sustainable crops, especially due to the climate changes and the high frequency in which climate extremes are occurring lately. The objective of this study was to evaluate the agronomic performance and expression of genetic ... more

W.N. Rodrigues; S.V.B. Brinate; L.D. Martins; T.V. Colodetti; M.A. Tomaz