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Wyszukujesz frazę "Agrobacterium" wg kryterium: Temat


Wyświetlanie 1-13 z 13
Tytuł:
Agrobacterium -mediated transformation of tobacco and sorghum with a genetic construct containing genes encoding enzymes in the sucrose synthesis pathway
Autorzy:
Marszalek, M.
Zeyland, J.
Luwanska, A.
Wielgus, K.
Slomski, R.
Lipinski, D.
Powiązania:
https://bibliotekanauki.pl/articles/951210.pdf
Data publikacji:
2015
Wydawca:
Polska Akademia Nauk. Czytelnia Czasopism PAN
Tematy:
conference
Agrobacterium
Agrobacterium tumefaciens
transformation
tobacco
sorghum
gene encoding
enzyme
sucrose
Źródło:
BioTechnologia. Journal of Biotechnology Computational Biology and Bionanotechnology; 2015, 96, 1
0860-7796
Pojawia się w:
BioTechnologia. Journal of Biotechnology Computational Biology and Bionanotechnology
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Odyssey of Agrobacterium T-DNA.
Autorzy:
Ziemienowicz, Alicja
Powiązania:
https://bibliotekanauki.pl/articles/1044091.pdf
Data publikacji:
2001
Wydawca:
Polskie Towarzystwo Biochemiczne
Tematy:
Agrobacterium
DNA transfer
T-DNA
virulence
Opis:
Agrobacterium tumefaciens, a plant pathogen, is characterized by the unique feature of interkingdom DNA transfer. This soil bacterium is able to transfer a fragment of its DNA, called T-DNA (transferred DNA), to the plant cell where T-DNA is integrated into the plant genome leading to "genetic colonization" of the host. The fate of T-DNA, its processing, transfer and integration, resembles the journey of Odysseus, although our hero returns from its long trip in a slightly modified form.The soil bacterium, Agrobacterium tumefaciens, is a plant pathogen responsible for tumor induction on dicotyledonous plants due to its ability to transfer DNA to the plant cell (reviewed in: de la Cruz & Lanka, 1998; Gelvin, 2000; Hansen & Chilton, 1999; Lartey & Citovsky, 1997; Rossi et al., 1998; Zupan & Zambryski, 1997). In biotechnology this ability is widely used for plant transformation. During tumor induction Agrobacterium attaches to plant cells and then transfers part of its DNA to some of these cells. The transferred DNA (T-DNA) which resides on a large Ti (tumor inducing) plasmid, is processed within the bacterium and is exported to the plant where it becomes integrated into the plant genome (reviewed in: Sheng & Citovsky, 1996; Tinland & Hohn, 1995; Tinland, 1996). Proteins encoded by the virulence (vir) region of the Ti plasmid regulate T-DNA processing and transfer. Phenolic compounds derived from a wounded plant cell wall induce expression of the vir region genes. Virulence proteins recognize 25 bp imperfect direct repeats (border sequences) that define the T-DNA. In the presence of VirD1 protein, VirD2 cleaves the border sequence in a site- and strand-specific manner and subsequently becomes covalently attached to the 5' end of the nicked DNA. The nicked DNA is then displaced from the plasmid producing single-stranded T-DNA. The T-DNA-VirD2 complex and the VirE2 protein are believed to be transferred to the plant through a pilus-like structure containing VirB and VirD4 proteins. In the plant cell, T-DNA becomes coated with the single-stranded DNA-binding protein, VirE2. The T-DNA-protein complex is imported into the nucleus where the T-DNA is integrated into the nuclear genome. Expression of genes located on T-DNA leads to the formation of proteins involved in the production of auxins and cytokinins. These plant hormones cause the tumorous phenotype that is characterized by the ability of the plant cells to proliferate limitlessly and autonomously even in the absence of added phytohormones. Crown gall tumors are characterized by the production of opines (amino-acid derivatives). The biosynthesis of opines is catalyzed by opine synthases, which are encoded by the T-DNA. Opines formed in the tumors can be metabolized by the tumorigenic agrobacteria, but not by most of the other soil organisms. Thus, Agrobacterium creates for itself a favorable niche by genetic modification of plant cells, a process called "genetic colonization". All stages of this colonization, including chemotaxis, attachment, induction of virulence region, processing of T-DNA, T-DNA transfer, T-DNA integration, expression of T-DNA genes and changes in the plant phenotype, will be discussed in the following chapters. This will be an odyssey of T-DNA that leaves the Agrobacterium cell in the form of nucleic acid and returns from its journey in the form of opines, derivatives of amino acids (Fig. 1).
Źródło:
Acta Biochimica Polonica; 2001, 48, 3; 623-635
0001-527X
Pojawia się w:
Acta Biochimica Polonica
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Production of oleanolic acid glycosides by hairy root established cultures of Calendula officinalis L.
Autorzy:
Długosz, Marek
Wiktorowska, Ewa
Wiśniewska, Anita
Pączkowski, Cezary
Powiązania:
https://bibliotekanauki.pl/articles/1039552.pdf
Data publikacji:
2013
Wydawca:
Polskie Towarzystwo Biochemiczne
Tematy:
Marigold
Agrobacterium rhizogenes
hairy roots
triterpenic saponins
oleanolic acid
transformation
Opis:
In order to initiate hairy root culture initiation cotyledons and hypocotyls of Calendula officinalis L. were infected with Agrobacterium rhizogenes strain ATCC 15834 or the same strain containing pCAMBIA 1381Z vector with β-glucuronidase reporter gene under control of promoter of NIK (Nematode Induced Kinase) gene. The efficiency of induction of hairy roots reached 33.8% for cotyledons and 66.6% for hypocotyls together for both transformation experiments. Finally, eight control and nine modified lines were established as a long-term culture. The hairy root cultures showed the ability to synthesize oleanolic acid mainly (97%) as glycosides; control lines contained it at the average 8.42 mg · g-1 dry weight in tissue and 0.23 mg · dm-3 in medium; modified lines: 4.59 mg · g-1 for the tissue, and 0.48 mg · dm-3 for the medium. Additionally lines showed high positive correlation between dry/fresh weight and oleanolic acid concentration in tissue. Using the Killiani mixture in acidic hydrolysis of oleanolic acid glycosides released free aglycones that were partially acetylated in such conditions.
Źródło:
Acta Biochimica Polonica; 2013, 60, 3; 467-473
0001-527X
Pojawia się w:
Acta Biochimica Polonica
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Optimization of transient Agrobacterium-mediated gene expression system in leaves of Nicotiana benthamiana
Autorzy:
Wydro, Mateusz
Kozubek, Edward
Lehmann, Przemysław
Powiązania:
https://bibliotekanauki.pl/articles/1041239.pdf
Data publikacji:
2006
Wydawca:
Polskie Towarzystwo Biochemiczne
Tematy:
RNA silencing
Nicotiana benthamiana
viral suppressor
Agrobacterium-mediated transient expression
Opis:
Here we report on a simple and reproducible system of Agrobacterium-mediated transient gene expression assay that utilizes infiltration of young Nicotiana benthamiana leaves. Although some of the phenomena described in this paper have been already reported by other researchers, here we have further developed them. The highest level of transient gfp gene expression was detected in the youngest leaves of N. benthamiana infiltrated with A. tumefaciens strains AGL0 and EHA105 precultured in the presence of 450-600 µM acetosyringone. Although the maximum level of transient gfp gene expression was restricted presumably by RNA silencing, it was completely suppressed in the presence of the viral protein HC-Pro. The transient expression system described here can be used to identify new viral suppressors of RNA silencing, for detailed analysis of unidentified genes and for industrial production of proteins in plants as well.
Źródło:
Acta Biochimica Polonica; 2006, 53, 2; 289-298
0001-527X
Pojawia się w:
Acta Biochimica Polonica
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Transformation of wild Solanum species resistant to late blight by using reporter gene gfp and msh2 genes
Autorzy:
Rakosy-Tican, Lenuta
Aurori, Adriana
Aurori, Cristian M.
Ispas, Gabriela
Famelaer, Ivan
Powiązania:
https://bibliotekanauki.pl/articles/2198986.pdf
Data publikacji:
2004-12-20
Wydawca:
Instytut Hodowli i Aklimatyzacji Roślin
Tematy:
Agrobacterium tumefaciens mediated transformation
DNA mismatch repair
gfp
nptII marker gene
Opis:
Green fluorescent protein (gfp) reporter gene and nptII marker gene were used to optimize Agrobacterium tumefaciens (agro) mediated transformation of wild Solanum genotypes resistant to late blight. Different genotypes of Solanum bulbocastanum, S. chacoense, S. microdontum and S. verrucosum were assessed for their regeneration ability on MS based media and for agro-mediated transformation. As the first step reporter genes were used to optimize transformation protocol for each species and then the transfer of genes involved in mismatch repair of DNA were attempted in Solanum chacoense. For transformation, either leaf or stem fragments were used. It was shown that gfp is a valuable and elegant tool for monitoring the efficiency of transformation or the occurrence of chimera in all genotypes. Transformation efficiency was dependent on a plant genotype. A number of genotypes have been successfully transformed and they expressed constitutively the bright green fluorescence of gfp without any side effects. The most recalcitrant species proved to be S. microdontum, which did not regenerate plants although different media and phytohormones had been used. The best protocol for S. chacoense transformation was also found to work in the transfer of msh2 genes. Msh2 isolated from Arabidopsis was used and transferred either as mutated (Apa) or antisense (As) gene. The integration of msh2-mutated gene into S. chacoense genome was demonstrated by PCR amplification and confirmed by RT-PCR for some of the putative transgenic clones. The implications of mismatch repair in homologous recombination and its importance for potato improvement are discussed. 
Źródło:
Plant Breeding and Seed Science; 2004, 50; 119-127
1429-3862
2083-599X
Pojawia się w:
Plant Breeding and Seed Science
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Improved transformation of Agrobacterium assisted by silver nanoparticle
Autorzy:
Benny, Amala
Alex, Swapny
Soni, K.B.
Anith, K.N.
Kiran, A.G.
Viji, M.M.
Powiązania:
https://bibliotekanauki.pl/articles/16648111.pdf
Data publikacji:
2022
Wydawca:
Polska Akademia Nauk. Czasopisma i Monografie PAN
Tematy:
silver nanoparticles
Agrobacterium transformation
calcium chloride
competent cells
freeze thaw
transformation efficiency
Opis:
In transgenic plant development, the low transformation efficiency of Agrobacterium with exogenous DNA is the major constraint, and hence, methods to improve its transformation efficiency are needed. Recently, nanoparticlemediated gene transfer has evolved as a key transformational tool in genetic transformation. Since silver nanoparticles (AgNPs) can induce pores on the cell membrane, their efficacy in the improvement of conventional calcium chloride freeze-thaw technique of transformation of Agrobacterium was explored in this study. Agrobacterium cells in the exponential growth phase were exposed to different concentrations of AgNPs (0.01, 1, 5, 10, and 20 mg/l), and the half-maximal effective concentration (EC50) was determined via Probit analysis using the SPSS software. Transformation efficiency of AgNPs alone and in combination with calcium chloride was compared with that of the conventional calcium chloride freeze-thaw technique. AgNPs at a concentration of 0.01 mg/l in combination with calcium chloride (20 mM) showed a ten fold increase in the transformation efficiency (3.33 log CFU (colony-forming unit/microgram of DNA) of Agrobacterium tumefaciens strain EHA 105 with plasmid vector pART27 compared with the conventional technique (2.31 log CFU/μg of DNA). This study indicates that AgNPs of size 100 nm can eliminate the freeze-thaw stage in the conventional Agrobacterium transformation technique, with a 44% improvement in efficiency. The use of AgNPs (0.01 mg/l) along with 20 mM calcium chloride was found to be an economically viable method to improve the transformation of Agrobacterium with exogenous plasmid DNA.
Źródło:
BioTechnologia. Journal of Biotechnology Computational Biology and Bionanotechnology; 2022, 103, 3; 311-317
0860-7796
Pojawia się w:
BioTechnologia. Journal of Biotechnology Computational Biology and Bionanotechnology
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Agrobacterium-mediated genetic transformation of Miscanthus sinensis and Miscanthus × giganteus. Preliminary studies
Autorzy:
Cerazy, J.
Slusarkiewicz-Jarzina, A.
Ponitka, A.
Malec, K.
Jezowski, S.
Pniewski, T.
Powiązania:
https://bibliotekanauki.pl/articles/951241.pdf
Data publikacji:
2015
Wydawca:
Polska Akademia Nauk. Czytelnia Czasopism PAN
Tematy:
conference
Agrobacterium
genetic transformation
Miscanthus sinensis
biomass
renewable raw material
bioenergy
biofuel
plant transformation
Źródło:
BioTechnologia. Journal of Biotechnology Computational Biology and Bionanotechnology; 2015, 96, 1
0860-7796
Pojawia się w:
BioTechnologia. Journal of Biotechnology Computational Biology and Bionanotechnology
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Norway spruce (Picea abies) genetic transformation with modified Cry3A gene of Bacillus thuringiensis
Autorzy:
Bříza, Jindřich
Pavingerová, Daniela
Vlasák, Josef
Niedermeierová, Hana
Powiązania:
https://bibliotekanauki.pl/articles/1039537.pdf
Data publikacji:
2013
Wydawca:
Polskie Towarzystwo Biochemiczne
Tematy:
Cry3A gene modification
Picea abies
Agrobacterium tumefaciens and biolistic transformation
embryogenic tissue
somatic embryogenesis
Opis:
Modified versions of the Cry3A gene of Bacillus thuringiensis (Bt) were transferred into Norway spruce (Picea abies). Both the biolistic approach and Agrobacterium tumefaciens mediated procedure were employed for transformation of embryogenic tissue (ET) cultures. The latter method proved to be more efficient yielding 70 transgenic embryogenic tissue lines compared with 18 lines obtained by biolistics. The modified Cry3A genes were driven by a 35S promoter and the nptII screenable selection marker gene was used in all vectors. The transgenic ETs were molecularly characterized and converted into mature somatic embryos. Germinating embryos formed plantlets which were finally planted into perlite and their Cry3A gene transcription activities were demonstrated by RT-PCR.
Źródło:
Acta Biochimica Polonica; 2013, 60, 3; 395-400
0001-527X
Pojawia się w:
Acta Biochimica Polonica
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Expression of hepatitis B core antigen in lettuce and tobacco for advanced plant-derived vaccine formulations
Autorzy:
Pyrski, M.
Kasprzyk, A.
Bogusiewicz, M.
Bociag, P.
Czyz, M.
Pniewski, T.
Powiązania:
https://bibliotekanauki.pl/articles/951208.pdf
Data publikacji:
2015
Wydawca:
Polska Akademia Nauk. Czytelnia Czasopism PAN
Tematy:
conference
hepatitis B virus
antigen expression
virus-like particle
transgenic tobacco
lettuce plant
Agrobacterium tumefaciens
immunoblot
ELISA test
Źródło:
BioTechnologia. Journal of Biotechnology Computational Biology and Bionanotechnology; 2015, 96, 1
0860-7796
Pojawia się w:
BioTechnologia. Journal of Biotechnology Computational Biology and Bionanotechnology
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Transformacja rzepaku genem reporterowym kodujacym bialko zielonej fluorescencji za pomoca Agrobacterium tumefactens.
Autorzy:
Troczynska, J
Flasinski, S.
Drozdowska, L.
Powiązania:
https://bibliotekanauki.pl/articles/833820.pdf
Data publikacji:
2001
Wydawca:
Instytut Hodowli i Aklimatyzacji Roślin
Tematy:
Agrobacterium tumefaciens
fluorescencja chlorofilu
rzepak
bialko
transformacja
genetyka roslin
regeneracja pedow
chlorophyll fluorescence
rape
protein
genetic transformation
shoot regeneration
Źródło:
Rośliny Oleiste - Oilseed Crops; 2001, 22, 2; 569-578
1233-8273
Pojawia się w:
Rośliny Oleiste - Oilseed Crops
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
The effect of L-glutamine on the genetic transformation of embryogenic cell suspensions of gentian species (Gentiana lutea L., Gentiana cruciata L., and Gentiana kurroo Royle) using Agrobacterium tumefaciens
Autorzy:
Rybczynski, J.J.
Wojcik, A.I.
Powiązania:
https://bibliotekanauki.pl/articles/80392.pdf
Data publikacji:
2019
Wydawca:
Polska Akademia Nauk. Czytelnia Czasopism PAN
Tematy:
embryogenic cell
gentian
Gentiana lutea
Gentiana cruciata
Gentiana kurroo
Agrobacterium tumefaciens
kanamycin resistance
L-alanyl-L-glutamine
genetic transformation
Źródło:
BioTechnologia. Journal of Biotechnology Computational Biology and Bionanotechnology; 2019, 100, 1
0860-7796
Pojawia się w:
BioTechnologia. Journal of Biotechnology Computational Biology and Bionanotechnology
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Podatnosc odmian chryzantemy [Dendranthema grandiflora Tzvelev] na guzowatosc Agrobacterium tumefaciens [Smith et Townsend] Conn
Susceptibility of chrysanthemum [Dendranthema grandiflora Tzvelev] cultivars to crown gall [Agrobacterium tumefaciens [Smith et Townsend] Conn]
Autorzy:
Schollenberger, M
Powiązania:
https://bibliotekanauki.pl/articles/28002.pdf
Data publikacji:
2005
Wydawca:
Polskie Towarzystwo Botaniczne
Tematy:
Agrobacterium tumefaciens
Dendranthema grandiflora
chryzantema wielkokwiatowa
czynniki chorobotworcze
choroby bakteryjne
bakterie chorobotworcze
grupy upraw
podatnosc na choroby
guzowatosc
odmiany roslin
mother chrysanthemum
pathogenic factor
bacterial disease
pathogenic bacteria
disease susceptibility
crown gall disease
plant cultivar
Opis:
The susceptibility of 29 cultivars of chrysanthemum, representing various types of growth, to crown gall was studied. Two isolates of Agrobacterium tumefaciens: chrysanthemum and apple were used for testing plants. The inoculation was made to the stem base of rooted cuttings and places of pinching off. The first method gave larger galls on most tested plants and only three cultivars were resistant to inoculation with both A. tumefaciens isolates. Weak symptoms were obtained after cutting of stem tips, thus plants of 9 and 5 cultivars (in subsequent tests) showed no symptoms. Only three chrysanthemum cultivars were resistant to crown gall in all tests: Epidote Jaune, Epidote Orange and Epidote Rouge, all belonging to potted chrysanthemum. Plants of Maracas cultivar were resistant when bacteria were applied to the wound of stem tips. In all tests, the apple isolate was weak pathogenic, thus no gall were observed on many cultivars.
Na podstawie doświadczeń szklarniowych oceniono podatność 29 odmian chryzantemy, reprezentujących pięć grup uprawowych od wielkokwiatowych po doniczkowe drobnokwiatowe, na guzowatość. Sadzonki zakażano dwoma izolatami chryzantemowym i jabłoniowym Agrobacterium tumefaciens inokulując podstawę łodygi jak i część wierzchołkową. Po zastosowaniu pierwszej metody uzyskiwano silniejsze objawy i tylko rośliny trzech odmian (grupa Epidote, drobnokwiatowe) nie uległy porażeniu. Inokulując części szczytowe sadzonek uzyskano słabsze objawy chorobowe i przy tej metodzie 9 i 5 odmian (zależnie od doświadczenia) nie uległo porażeniu. W każdym przypadku odporne okazały się trzy odmiany: Epidote Jaune, Epidote Orange, Epidote Rouge. Przy tej metodzie dwukrotnie nie uległy porażeniu rośliny odmiany Maracas (doniczkowa wielkokwiatowa). We wszystkich przeprowadzonych doświadczeniach stwierdzono istotne różnice w patogeniczności izolatów jabłoniowego i chryzantemowego w stosunku do zakażanych roślin.
Źródło:
Acta Agrobotanica; 2005, 58, 2; 485-496
0065-0951
2300-357X
Pojawia się w:
Acta Agrobotanica
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Efficacy of biochemical preparations and extract from Hypericum perforatum against bacterial diseases
Autorzy:
Schollenberger, M.
Pudło, S.
Paduch-Cichal, E.
Mirzwa-Mróz, E.
Powiązania:
https://bibliotekanauki.pl/articles/12688150.pdf
Data publikacji:
2019
Wydawca:
Uniwersytet Przyrodniczy w Lublinie. Wydawnictwo Uniwersytetu Przyrodniczego w Lublinie
Tematy:
plant protection
integrated plant protection
plant preparation
biochemical preparation
biotechnical preparation
plant extract
Biosept Active preparation
BioZell preparation
herbal plant
St.John's wort
Hypericum perforatum
application effect
antimicrobial activity
bacterial disease
pathogenic bacteria
Agrobacterium tumefaciens
Pseudomonas syringae pv.syringae
Xanthomonas arboricola pv.corylina
Opis:
The biotechnical preparations: Biosept Active (based on a grapefruit extract) and BioZell (based on thyme oil) as well as Hypericum perforatum extract, streptomycin solution and fungicide Champion 50WP (active ingredient substance – e.i. 50% copper hydroxide) were investigated for antimicrobial effects against plant pathogenic bacteria: Agrobacterium tumefaciens, Pseudomonas syringae pv. syringae and Xanthomonas arboricola pv. corylina. The screening was carried out in vitro on three media: Nutrient Agar (NA Difco), Pseudomonas Agar F (Merck) – analogue of King B and 523. In the experiments, the agar plate method was applied. There were no statistically significant differences in the effect of streptomycin and Champion 50WP on the growth inhibition of three bacteria strains for medium 523 and Nutrient Agar and of P. syringae pv. syringae and X. arboricola pv. corylina for medium King B. It was determined that the antibacterial activity of Biosept Active and BioZell biopreparations and H. perforatum extract against Agrobacterium tumefaciens (strain C58), Pseudomonas syringae pv. syringae (strain 760) and Xanthomonas arboricola pv. corylina (strain RIPF-x13) were dependent on the strain of pathogen as well as the growth medium used. According to the research results obtained, the Biosept Active preparation and H. perforatum extract demonstrated high bacteriostatic activity against three bacterial strains grown on the Nutrient Agar medium.
Źródło:
Acta Scientiarum Polonorum. Hortorum Cultus; 2019, 18, 3; 147-156
1644-0692
Pojawia się w:
Acta Scientiarum Polonorum. Hortorum Cultus
Dostawca treści:
Biblioteka Nauki
Artykuł
    Wyświetlanie 1-13 z 13

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