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... The sequence of events leading to wound‐healing and resumption of growth are studied by light microscopy including the use of differential interference contrast optics in Vaucheria longicaulis Hoppaugh var. macounii Blum. Wound‐healing has been divided into four stages. In stage 1, a wound‐healing vesicle is rapidly extruded from the wound site. Loss of turgor pressure, as observed by the appearan ...
... Rodents are thought to have relatively high rates of evolution, twice as fast as the rates for mammals in other orders. However, the uniformly high rates of evolution inferred for the order Rodentia from Mus musculus and Rattus norvegicus are not consistently found for other rodent species. Using a maximum likelihood phylogenetic algorithm (DNAML), we show here that Mus spicilegus has a fivefold d ...
... We have used combined fluorescent and genomic in situ hybridization (FISH/GISH) together with 4',6-diamidino-2-phenylindole (DAPI) counterstaining to determine simultaneously the chromosomal integration site and subgenomic allocation of a transgene insert in amphidiploid tobacco (Nicotiana tabacum, 2n = 4x = 48). The procedure provides sufficient information on physical markers to identify at leas ...
... The dechlorination of carbon tetrachloride (CCl4) by free-living and attached bacteria under anaerobic conditions was studied to examine the relationship between porous media and electron donor. Two batch-type experiments, the free-living and attached bacterial systems, were conducted with and without addition of 0.5-mm glass beads. Glucose and acetate were selected as the primary electron donors ...
... In situ hybridization with rRNA-targeted, fluorescent (Cy3-labeled) oligonucleotide probes was used to analyze bacterial community structure in ethanol- or paraformaldehyde-fixed bulk soil after homogenization of soil samples in 0.1% pyrophosphate by mild ultrasonic treatment. In ethanol-fixed samples 37 +/- 7%, and in paraformaldehyde 41 +/- 8% of the 4', 6-diamidino-2-phenylindole(DAPI)-stained ...
... A previous study reported that the addition of bovine growth hormone (bGH) during in vitro maturation of bovine oocytes accelerates nuclear maturation and stimulates subsequent embryonic development. The aim of this study was to investigate whether bovine cumulus oocyte complexes (COCs) contain growth hormone receptor (GHR), and whether the stimulatory effect of GH on oocyte maturation is cumulus- ...
... Nuclei from two populations of the siphonous green alga Caulerpa taxifolia (Vahl) C. Agardh were labeled with fluorescent antihistone antibodies and examined by confocal microscopy. Because the nuclei are small (2 μm diameter), it is difficult to study them by conventional methods, and DAPI staining does not distinguish the nuclei from intracellular bacteria. Using immunofluorescent microscopy, it ...
... We examined the abundance and spatial distribution of major phylogenetic groups of the domain Bacteria in hindguts of the Australian lower termite Mastotermes darwiniensis by using in situ hybridization with group-specific, fluorescently labeled, rRNA-targeted oligonucleotide probes. Between 32.0 +/- 7.2% and 52.3 +/- 8.2% of the DAPI-stained cells in different hindgut fractions were detected with ...
... The structure of root-associated bacterial populations in the legume common bean (Phaseolus vulgaris L.), was studied in plants grown under nitrogen sufficiency and under conditions inducing nitrogen deficiency. Similar cell numbers were obtained in the rhizosphere of nitrogen-amended plants as compared to nitrogen-deficient plants and between various root parts—tip, elongation and branching zones ...
4',6-diamidino-2-phenylindole; Phytoplasma; Prunus domestica; clones; cultivars; fruits; genotype; growth retardation; mortality; new variety; polymerase chain reaction; staining; stone fruits
Abstract:
... Five new cultivars of French prune (Prune d'Ente) and 11 cultivars or new clones of greengage (Reine Claude) were bud‐inoculated with European stone fruit yellows (ESFY) phytoplasmas and evaluated for their host response in the nursery over a period of 6 years. The ESFY infection was confirmed by specific polymerase chain reaction (PCR) detection and 4′,6‐diamidino‐2‐phenylindole (DAPI) staining i ...
4',6-diamidino-2-phenylindole; fluorescence microscopy; lipopolysaccharides; sexual reproduction; toxins; transmission electron microscopy; vegetative growth
Abstract:
... The association of bacteria with dinoflagellates has been a neglected field of study, which has gained prominence in recent years because of the possible role of bacteria in toxin synthesis. A number of dinoflagellates undergo sexual reproduction, passing through various life-cycle stages in addition to the vegetative form. The presence of bacteria within dinoflagellates has been well established, ...
... The hexaploid liliaceous plant Ornithogalum longibracteatum (2n=6x=54) has a heterochromatin-rich bimodal karyotype with large (L) and small (S) chromosomes. The composition and subgenomic distribution of heterochromatin was studied using molecular and cytological methods. The major component of centromeric heterochromatin in all chromosomes is Sat1, an abundant satellite DNA with a basic repeat u ...
4',6-diamidino-2-phenylindole; DNA libraries; Pinus densiflora; chromosomes; clones; fluorescence; fluorescence in situ hybridization; genes; molecular cloning; oligonucleotides; polymerase chain reaction; ribosomal DNA; ribosomal RNA; tandem repeat sequences
Abstract:
... Japanese red pine, Pinus densiflora, has 2n=24 chromosomes, of which most carry chromomycin A3 (CMA) and 4',6-diamidino-2-phenylindole (DAPI) bands at their centromere-proximal regions. It was proposed that these regions contain highly repetitive DNA. The DNA localized in the proximal fluorescent bands was isolated and characterized. In P. densiflora, centromeric and neighboring segments of the so ...
4',6-diamidino-2-phenylindole; Amaranthus caudatus; Chenopodium quinoa; cultivars; fluorescence; fluorescence in situ hybridization; hybridization; loci; ribosomal DNA; silver staining; South America
Abstract:
... Chenopodium quinoa Wild. and Amaranthus caudatus L., two plant species from South America, have small and numerous chromosomes. Looking for chromosome markers to distinguish pairs of homologous chromosomes double fluorescence staining, in situ hybridization with 45S rDNA and silver staining were applied. Fluorescent in situ hybridization with 45S rDNA has shown two sites of hybridization occurring ...
... Highly repetitive tandem DNA sequence repeats are often associated with centromeric and telomeric regions of eukaryotic chromosomes. The rice tandem repeat Os48 is organized as long arrays of a 355 bp monomer and is mainly located in the telomeric regions. The chromosomal locations of the Os48 sequence were determined by fluorescence in situ hybridization (FISH) on rice pachytene chromosomes. The ...
4',6-diamidino-2-phenylindole; bacteria; bacterial adhesion; bacterial colonization; biofilm; chlorination; chlorine; disinfection; drinking water; fluorescence microscopy; microbial growth; models; rural communities; scanning electron microscopy; stainless steel; surface water; water treatment; Africa
Abstract:
... Aims: The aim of this study was to investigate the inhibition of biofilm formation on stainless steel (SS) and galvanized mild steel (MS) in chlorine (AFC1) and chlorine-monochloramine treated waters (AFC2M). Methods and Results: Disinfection was carried out using 2.5 mg l(-1) free chlorine followed by 1.5 mg l(-1) monochloramine, with non-disinfected water used as control water. Results of the st ...
... Cucumber (Cucumis sativus) hypocotyls were cut to one-half of their diameter transversely, and morphological and histochemical analyses of the process of tissue reunion in the cortex were performed. Cell division in the cortex commenced 3 d after cutting, and the cortex was nearly fully united within 7 d. 4',6-Diamidino-2-phenylindole staining and 5-bromo-2'-deoxyuridine labeling experiments indic ...
... The combination of a hydrophilic embedding resin, Nanoplast, with fluorescent probes, and subsequent imaging using two-photon and confocal laser scanning microscopy (2P-LSM and CLSM) has allowed in imaging of the in situ microspatial arrangements of microbial cells and their extracellular polymeric secretion (EPS) within marine stromatolites. Optical sectioning by 2P-LSM and CLSM allowed imaging o ...