نتایج جستجو برای: gusa

تعداد نتایج: 174  

Journal: :Journal of bacteriology 1996
K Cho C Fuqua B S Martin S C Winans

Agrobacterium tumefaciens R10 was mutagenized by using the promoter probe transposon Tn5-gusA7, and a library of approximately 5,000 transcriptional fusions was screened for octopine-inducible patterns of gene expression. Twenty-one mutants carrying strongly inducible gusA fusions, 20 of which showed defects in the catabolism of octopine or its metabolites, were obtained. One group of mutants c...

2009
Jenny E Emerson Catherine B Reynolds Robert P Fagan Helen A Shaw David Goulding Neil F Fairweather

Clostridium difficile is a nosocomial pathogen that can cause severe gastrointestinal infections. C. difficile encodes a family of cell wall proteins, some of which are implicated in pathogenesis. Here we have characterized CwpV, the largest member of this family. CwpV is surface expressed and post-translationally processed in a manner analogous to the major S-layer protein SlpA. Expression of ...

Journal: :Journal of molecular microbiology and biotechnology 2000
J Bouvier P Bordes Y Romeo A Fourçans I Bouvier C Gutierrez

A Lactococcus lactis glycine-betaine transport system was identified by functional complementation of an Escherichia coli proP proU mutant with a gene library from L. lactis sbsp. cremoris. The cloned locus forms an operon highly homologous to opuA, encoding a glycine-betaine uptake system of Bacillus subtilis. Disruption of opuA in L. lactis abolished protection by glycine-betaine against elev...

Journal: :Applied and environmental microbiology 2002
Christian Solem Peter Ruhdal Jensen

A new approach for modulating gene expression, based on randomization of promoter (spacer) sequences, was developed. The method was applied to chromosomal genes in Lactococcus lactis and shown to generate libraries of clones with broad ranges of expression levels of target genes. In one example, overexpression was achieved by introducing an additional gene copy into a phage attachment site on t...

Journal: :Plant physiology 2000
C Desfeux S J Clough A F Bent

The floral-dip method for Agrobacterium-mediated transformation of Arabidopsis allows efficient plant transformation without need for tissue culture. To facilitate use with other plant species, we investigated the mechanisms that underlie this method. In manual outcrossing experiments, application of Agrobacterium tumefaciens to pollen donor plants did not produce any transformed progeny, where...

2006
Simon P. Vaughan David J. James Keith Lindsey Andrea J. Massiah

Many insect and fungal pathogens posing agronomically important threats specifically target the roots in strawberry. The use of a root-specific promoter to confer expressionof resistancegenes in a targetedmanner has the potential appreciably to benefit the genetic improvement of commercial strawberry varieties. A novel gene, FaRB7, was isolated from strawberry (Fragaria3 ananassa Duch.) and fou...

2016
Gen-Ping Wang Xiu-Dao Yu Yong-Wei Sun Huw D. Jones Lan-Qin Xia

Horizontal transfer of antibiotic resistance genes to animals and vertical transfer of herbicide resistance genes to the weedy relatives are perceived as major biosafety concerns in genetically modified (GM) crops. In this study, five novel vectors which used gusA and bar as a reporter gene and a selection marker gene, respectively, were constructed based on the pCLEAN dual binary vector system...

Journal: :Journal of experimental botany 2006
Simon P Vaughan David J James Keith Lindsey Andrea J Massiah

Many insect and fungal pathogens posing agronomically important threats specifically target the roots in strawberry. The use of a root-specific promoter to confer expression of resistance genes in a targeted manner has the potential appreciably to benefit the genetic improvement of commercial strawberry varieties. A novel gene, FaRB7, was isolated from strawberry (Fragariaxananassa Duch.) and f...

Journal: :Applied and environmental microbiology 2007
Stefania Arioli Christophe Monnet Simone Guglielmetti Carlo Parini Ivano De Noni Johannes Hogenboom Prakash M Halami Diego Mora

We investigated the carbon dioxide metabolism of Streptococcus thermophilus, evaluating the phenotype of a phosphoenolpyruvate carboxylase-negative mutant obtained by replacement of a functional ppc gene with a deleted and inactive version, Deltappc. The growth of the mutant was compared to that of the parent strain in a chemically defined medium and in milk, supplemented or not with L-aspartic...

Journal: :The Plant journal : for cell and molecular biology 2015
So-Yon Park Zarir Vaghchhipawala Balaji Vasudevan Lan-Ying Lee Yunjia Shen Kamy Singer Wanda M Waterworth Zhanyuan J Zhang Christopher E West Kirankumar S Mysore Stanton B Gelvin

Non-homologous end joining (NHEJ) is the major model proposed for Agrobacterium T-DNA integration into the plant genome. In animal cells, several proteins, including KU70, KU80, ARTEMIS, DNA-PKcs, DNA ligase IV (LIG4), Ataxia telangiectasia mutated (ATM), and ATM- and Rad3-related (ATR), play an important role in 'classical' (c)NHEJ. Other proteins, including histone H1 (HON1), XRCC1, and PARP1...

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