Research Article

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2/08/2017
Animals; Bayes Theorem; Brazil; Evolution, Molecular; Fishes; Genetic variation; Genetics, Population; Microsatellite Repeats

Genetic variability is one of the important criteria for species conservation decisions. This study aimed to analyze the genetic diversity and the population differentiation of two natural populations of Arapaima gigas, a species with a long history of being commercially exploited. We collected 87 samples of A. gigas from Grande Curuai Lake and Paru Lake, located in the Lower Amazon region of ... more

P.F. Fazzi-Gomes; N. Melo; G. Palheta; S. Guerreiro; M. Amador; A.K. Ribeiro-Dos-Santos; S. Santos; I. Hamoy
2/16/2017
Bayes Theorem; Casearia; Chloroplasts; Conservation of Natural Resources; Discriminant analysis; DNA, Chloroplast; Genetic variation; Genetics, Population; Haplotypes; Microsatellite Repeats

Casearia grandiflora (Salicaceae) is a typical Cerrado species adapted to disturbed environments, making it useful for restoration projects. Knowledge of genetic diversity is important for establishing conservation strategies for this species. This study aimed to compare chloroplast haplotype diversity and structure of C. grandiflora, under the assumption that protected areas hold greater ... more

M.F. Costa; A.A. Pereira; J.B. Pinheiro; M.I. Zucchi; A.S.F. Araújo; R.L.F. Gomes; S.E.S. Valente; M.E.A. Oliveira; A.C.A. Lopes
3/08/2017
Alleles; DNA, Plant; Expressed sequence tags; Genetic variation; Heterozygote; Microsatellite Repeats; Polymorphism, Genetic; Reproduction; Saccharum

The reduction in sugarcane productivity in subsequent cutting stages may be related to a gradual decrease of the allele number and mean observed heterozygosity (H) in the sugarcane ratoon. This hypothesis was tested assessing the number of alleles and H values in 10 expressed sequence tag microsatellites (Est-SSR loci) of the sugarcane varieties RB72454 and RB867515 in different cutting stages ... more

R. Augusto; R.C. Maranho; C.A. Mangolin; J.C.Bespalho Filho; M.F.P.S. Machado
3/15/2017
Agriculture; Animals; Brazil; Breeding; Cattle; Female; Genetic variation; male; Population Density

The Red Sindhi cattle breed was imported to Brazil in small numbers. Nowadays, the herds of this breed are distributed in the Northeast, Southeast and Midwest regions of the country. In this study, DNA samples of animals originating from 15 herds in the Northeast and Southeast regions have been analyzed to obtain the ancestry proportions, and to gain a better understanding of the current ... more

J.C.C. Panetto; M.V.G.B. Silva; R.M.H. Leite; M.A. Machado; F.A.T. Bruneli; D.R.L. Reis; M.G.C.D. Peixoto; R.S. Verneque
3/22/2017
Animals; Aphids; Biological evolution; Genetic variation; Hemiptera; Parthenogenesis; Photoperiod; Reproduction, Asexual; RNA; Transcriptome

Chinese galls form on sumac plants (Rhus chinensis) and are used for medicinal and chemical purposes, due to their richness in tannins. The galls are formed by aphids, the most prominent of which is Schlechtendalia chinensis, which forms horn-shaped galls on the winged rachis of R. chinensis. S. chinensis has a complex life cycle, including both R. chinensis and certain mosses as hosts, as ... more

P. Liu; Z.X. Yang; X.M. Chen; P. Yang
3/30/2017
Aged; Aged, 80 and over; Alleles; Asian People; Case-control studies; Ethnicity; Gene frequency; Genetic predisposition to disease; Genetic variation; Haplotypes; Humans; male; Middle Aged; Polymorphism, Single Nucleotide; Prostatic Neoplasms; Proto-Oncogene Proteins c-akt

AKT1, also known as v-akt murine thymoma viral oncogene homolog 1, is involved in the regulation of cell-survival and anti-apoptotic activities, which may affect the pathogenesis of various cancers. However, the association between genetic variants of AKT1 and the risk of developing prostate cancer has not been investigated before. This study investigated the associations between three ... more

J.M. Liu; S.H. Cheng; C. Xia; T. Deng; Y.C. Zhu; X. Wei; Z.L. Huang; B.H. Liao; D.Y. Luo; Y.G. Zhang; T. Jin; K.J. Wang; J. Huang; H. Li
4/05/2017
Chromosomes, Plant; DNA methylation; DNA, Plant; Epigenesis, Genetic; Evolution, Molecular; Genetic variation; Genome, Plant; Microsatellite Repeats; Polyploidy; Random Amplified Polymorphic DNA Technique; Triticum

We used the conventional and methylation-sensitive randomly amplified polymorphic DNA (RAPD) and inter-simple sequence repeat (ISSR) analyses to assess genome-wide changes and explore the relationships between genetic and epigenetic variations among individuals of a newly synthesized allohexaploid wheat line whose genomic constitution is identical to that of the natural common wheat, compared ... more

T. Qiu; Y.Z. Dong; X.M. Yu; N. Zhao; Y.F. Yang
4/05/2017
Animals; Antibiosis; Brazil; Cucumis melo; Diptera; Genetic variation; Insect Repellents; Larva; Pest Control, Biological

Leafminers (Liriomyza sativae) are the main melon (Cucumis melo L.) pests in Northeast Brazil, which is the main region for the production and export of the fruit in Brazil. Of the integrated management strategies available, genetic resistance is the best method of preventing damage by these insects. The aim of this study was to select sources of resistance to leafminers in melon germplasm. ... more

E.F. Celin; F.I.C. Oliveira; N.S. Dias-Pini; G.H.S. Nunes; F.A.S. Aragão
4/05/2017
Alleles; Biomass; Genetic variation; Introduced species; Microsatellite Repeats; Sapium; Trees; United States

Chinese tallow (Triadica sebifera) is an important crop and ornamental tree. After it was introduced into the USA, it gradually became a noxious invasive tree in south-eastern America since the middle of the 1900s. Because only six microsatellites were reported previously in T. sebifera, to better understand the genetic diversity and population dynamics of such species, we reported here 28 new ... more

Y.F. Zhuang; Z.F. Wang; L.F. Wu
4/13/2017
Animals; Cucumis; Disease resistance; Genetic variation; Plant Roots; seeds; Tylenchoidea

Root-knot nematodes (Meloidogyne spp) are destructive agricultural pests that reduce the productivity of cultivated vegetables worldwide, especially when vegetables are cropped continuously in greenhouses. Cucumbers (Cucumis sativus L.), in particular, suffer extensive damage due to root-knot nematodes, and only a few wild species are known to be resistant. Grafting of cultivated plants to ... more

X.Z. Li; S.X. Chen

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