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Microbial Genetics

Microbial Genetics   Research Article

Screening and identification of microsatellite markers associated with cold tolerance in Nile tilapia Oreochromis niloticus

Authors: H.P. Zhu, Z.G. Liu, M.X. Lu, F.Y. Gao, X.L. Ke and Z.H. Huang

Tilapia is an important fish cultured in tropical and subtropical areas. Cold sensitivity limits the expansion of tilapia culture into colder regions of the world, and mass mortalities of cultured tilapia have been reported due to severe cold currents in winter. Since the late 1990s, several strains of Nile tilapia have been domesticated to improve the ab.. Read More»

Genet. Mol. Res. 14(3):
2015.August.28.16
DOI:
10.4238/2015.August.28.16
Microbial Genetics   Research Article

Functional characterization and analysis of the Arabidopsis UGT71C5 promoter region

Authors: Z. Liu, Q.H. Luo, J.M. Wang, X.F. Li and Y. Yang

In the present study, we isolated an Arabidopsis promoter, UGT71C5, and analyzed its role in the regulation of the light response mechanism. We constructed a fusion vector pBI121-pU-GUS by integrating the UGT71C5 promoter upstream of the GUS reporter gene in pBI121, and then transferred this vector into Arabidopsis plants. The GUS activity of the transgen.. Read More»

Genet. Mol. Res. 14(4):
2015.December.29.27
DOI:
10.4238/2015.December.29.27
Microbial Genetics   Research Article

Streptococcus massiliensis in the human mouth: a phylogenetic approach for the inference of bacterial habitats

Authors: F. P�³ntigo, C. Silva, M. Moraga and S.V. Flores

Streptococcus is a diverse bacterial lineage. Species of this genus occupy a myriad of environments inside humans and other animals. Despite the elucidation of several of these habitats, many remain to be identified. Here, we explore a methodological approach to reveal unknown bacterial environments. Specifically, we inferred the phylogeny of the Mitis gr.. Read More»

Genet. Mol. Res. 14(4):
2015.December.29.28
DOI:
10.4238/2015.December.29.28
Microbial Genetics   Research Article

Analysis of drug-resistant gene detection of blaOXA-like genes from Acinetobacter baumannii

Authors: D.K. Yang, H.J. Liang, H.L. Gao, X.W. Wang and Y. Wang

Our study determines the resistance gene profile of a set of Acinetobacter baumannii hospital isolates. A. baumannii is responsible for nosocomial outbreaks and sporadic infections. We extracted and PCR amplified bacterial DNA isolated from patients with ages below 60 years (23.36%) and above 60 years (76.64%). Most of the patients were admitted in the IC.. Read More»

Genet. Mol. Res. 14(4):
2015.December.29.7
DOI:
10.4238/2015.December.29.7
Microbial Genetics   Research Article

Characterization and functional analysis of a chitin synthase gene (HcCS1) identified from the freshwater pearlmussel Hyriopsis cumingii

Authors: H.F. Zheng, Z.Y. Bai, J.Y. Lin, G.L. Wang, J.L. Li

The triangle sail mussel, Hyriopsis cumingii, is the most important freshwater pearl mussel in China. However, the mechanisms underlying its chitin-mediated shell and nacre formation remain largely unknown. Here, we characterized a chitin synthase (CS) gene (HcCS1) in H. cumingii, and analyzed its possible physiological function. The complete ORF sequence.. Read More»

Genet. Mol. Res. 14(4):
2015.December.29.36
DOI:
10.4238/2015.December.29.36
Microbial Genetics   Research Article

Salmonella enterica Typhimurium fljBA operon stability: implications regarding the origin of Salmonella enterica I 4,[5],12:i:-

Authors: M.P.O. Tomiyama, C.H. Werle, G.P. Milanez, D.B. N�³brega, J.P. Pereira, A.P. Calarga, F. Flores and M. Brocchi

Salmonella enterica subsp enterica serovar 4,5,12:i:- has been responsible for many recent Salmonella outbreaks worldwide. Several studies indicate that this serovar originated from S. enterica subsp enterica serovar Typhimurium, by the loss of the flagellar phase II gene (fljB) and adjacent sequences. However, at least two different clones of S. enterica.. Read More»

Genet. Mol. Res. 14(4):
2015.December.29.13
DOI:
10.4238/2015.December.29.13
Microbial Genetics   Research Article

Linker length affects expression and bioactivity of the onconase fusion protein in Pichia pastoris

Authors: G.G. Yang, X.Y. Xu, Y. Ding, Q.Q. Cui, Z. Wang, Q.Y. Zhang, S.H. Shi, Z.Y. Lv, X.Y. Wang, J.H. Zhang, R.G. Zhang and C.S. Xu

The aim of this study was to analyze the effect of linker length on the expression and biological activity of recombinant protein onconase (ONC) in fusion with human serum albumin (HSA) in Pichia pastoris. Four flexible linkers with different lengths namely Linker L0, L1: (GGGGS)1, L2: (GGGGS)2, and L3:(GGGGS)3 were inserted into the fusion gene and refer.. Read More»

Genet. Mol. Res. 14(4):
2015.December.29.46
DOI:
10.4238/2015.December.29.46
Microbial Genetics   Research Article

Direct preparation protocol to obtain mitotic chromosomes from canine mammary tumors

Authors: C.S.D. Morais, P.R.A.M. Affonso, J.A. Bitencourt and A.A. Wenceslau

Currently, mammary neoplasms in female canines are a serious problem in veterinary clinics. In addition, the canine species is an excellent disease model for human oncology because of the biological and genetic similarities between the species. Cytogenetics has allowed further study of the characterization of neoplasms in canines. We hypothesized that the.. Read More»

Genet. Mol. Res. 14(4):
2015.December.29.49
DOI:
10.4238/2015.December.29.49
Microbial Genetics   Research Article

Glucagon-like peptide-1 receptor agonists inhibit hepatic stellate cell activation by blocking the p38 MAPK signaling pathway

Authors: L.K. Wu, Y.C. Liu, L.L. Shi and K.D. Lu

We investigated the effects of glucagon-like peptide-1 receptor (GLP-1R) agonists on p38 mitogen-activated protein kinase (MAPK) signaling during inhibition of hepatic stellate cell (HSC) activity. Human HSCs were cultured and morphologically identified. HSC samples were collected and randomly divided into three groups (N = 20 samples per group): a contro.. Read More»

Genet. Mol. Res. 14(4):
2015.December.29.17
DOI:
10.4238/2015.December.29.17
Microbial Genetics   Research Article

Easy detection of green fluorescent proteinmulticopy transformants in Penicillium griseoroseum

Authors: Francis J.F. Lopes, Elza F. de Ara�ºjo and Marisa V. de Queiroz

Penicillium griseoroseum, a deuteromycete fungus producer of pectinolytic enzymes, was transformed with a gene encoding for green fluorescent protein (GFP). The selection of transformants was based on the homologous nitrate reductase gene (niaD). Protoplasts of a P. griseoroseum Nia mutant (PG63) were co-transformed with the p.. Read More»

Genet. Mol. Res. 3(4):