Báo cáo khoa học: "Vegetative propagation of oak (Quercus robur and Q petraea) by cutting and tissue culture" pot

... vegetative propagation of Q robur and Q petraea by cuttings and by tis-sue culture are presented and discussed.MATERIALS AND METHODS Propagation by cuttingsLeafy softwood cuttings ... formation in oak seedlings.Tree Physiol 6, 87-93Review articleVegetative propagation of oak (Quercus robur and Q petraea) by cutting and tissue cultureV ChalupaFaculty of Forestry, ... production of rooted cuttings of important European oak species (Q pe-traea and Q robur) .Experiments with tissue culture propa-gation of oak started after trials withcuttings....

Báo cáo khoa học: Structural characterization of the lipopolysaccharide O-polysaccharide antigen produced by Flavobacterium columnare ATCC 43622 potx

... was shown by 1D and 2D NMRanalysis, MS, and chemical methods that the O-PS of theLPS produced by F. columnare ATCC 43622 is a linearunbranched polymer of trisaccharide units composed of D-GlcNAcA, ... Kersters,K. & Vandamme, P. (1996) Cutting a Gordian knot: emendedclassiﬁcation and description of the genus Flavobacterium,emen-ded description of the Flavobacteriaceae, and proposal of Flavo-bacterium ... charac-teristic of acetamidino groups, and ring carbon signalsat 55.3, 52.8 and 51.1 p.p.m. indicative of C-N-linked sub-stituents, together with a total of four signals subsequentlyassigned...

Báo cáo khoa học: "Morphological variability of oaks (Quercus robur L, Quercus petraea (Matt) Liebl, Quercus pubescens Willd) in northeastern France: preliminary results" pptx

... (1975b) On the size and microstruc-ture of pollen grains of Quercus robur and Quercus petraea. Bot Not 128, 256-264Rushton BS (1978) Quercus robur L and Quer-cus petraea ... Q robur and Q pe-traea are clearly separated with a few morphologically intermediate individuals (3.5%). Q petraea ismore variable than Q robur. Q pubescens and Q robur ... inter-mediate individuals are found between Q robur and Q petraea (3.5% of the totalnumber of trees).On the other hand, Q petraea and Q pu-bescens form a continuum without...

Báo cáo khoa học: The propagation of hamster-adapted scrapie PrPSc can be enhanced by reduced pyridine nucleotide in vitro pdf

... intensity of the reactions of 0 and 10 lm NADPH revealed that the efficiency of PMCAwas increased by  2.59-fold in the presence of NADPH. To evaluate whether the effect of NADPHon PrPSc propagation ... aPK-resistant isoform in the presence of NADPH. Aliquots of ScBH of SHa-263K were serially diluted into solutions of rSHaPrP or rHu-PrP, with final ScBH dilutions of 10)3,10)4,10)5 and 10)6. ... substrate forPrPSc propagation in the presence of NADPH usingPMCA.Fig. 5. Influence of other analogues of NADPH and ascorbic acidon PrPSc propagation in PMCA. ScBH of SHa-263K were mixedwith...

Báo cáo khoa học: "Morphological variability of oak stands (Quercus petraea and Quercus robur) in northern Germany" docx

... thetwo native British oak species, Quercus robur L and Quercus petraea (Matt) Liebl. Ph DThesis, University of YorkRushton BS (1978) Quercus robur L and Quer-cus petraea (Matt) ... proportion of hybrid forms.RESULTS Of the investigated stands, 49% belongedto Q robur and 40% to Q petraea or con-sisted mainly of these species; 11 % of thestands were ... base).Some of the measurements are explained infigure 1. By means of the computer program SPSS X and the discriminant analysis, Q robur leaveswere separated from those of Q petraea....

Báo cáo khoa học: " Genetic improvement of oak KC Steiner in North America School of Forest Resources,Pennsylvania State University, University Park" pot

... is very nearly equal to the com-bined land areas of Germany, Denmark,Belgium and the Netherlands. It is about10 times the area of all oak forest and woodlots in France ... redun-dancy of 19 projects on the genetic im-provement of Q rubra (of which only 5.4million seedlings were planted in 1990).This is a consequence of our federal sys-tem of ... 1989). OAK PLANTINGIN THE UNITED STATESGiven the size of the oak resource in theUS, the practice of planting to regeneratestands after harvesting is almost inconse-quential....

Báo cáo khoa học: "An overview of oak silviculture in the United States: the past, present, and future" pdf

... time,85% of the eastern upland oak forest con-tained oak. These forests were mostly sec-ond-growth stands of sprout origin. Despitethe high percentage of oak in thesestands, ... in oaks by recur-rent shoot dieback. The accumulation of oak reproduction under a parent stand isone of the most important aspects of theregeneration ecology of oaks.Recurrent ... studies to develop yield,stand, and volume tables for these even-aged upland oak forests. He found that ful-ly stocked oak stands of average site quali-ty (18 m tall at...

Tài liệu Báo cáo khoa học: Solution structure of hirsutellin A – new insights into the active site and interacting interfaces of ribotoxins docx

... the pKa of the his-tidine residue in the active site of RNases and conse-quently in determining the activity profile of thisenzyme as a function of pH [26,27]. Another uniquefeature of the ... remarkable thatthe exquisite specificity of the ribotoxins HtA and a-sarcin can be achieved by two quite different sets of active site residues.Experimental proceduresProtein isolation and purificationFungal ... size between other ribotoxins and lessspecific microbial RNases, and thus offers a unique chance to determinethe minimal structural requirements for activities unique to ribotoxins.Here, we have...

Tài liệu Báo cáo khoa học: Gene transcription of fgl2 in endothelial cells is controlled by Ets-1 and Oct-1 and requires the presence of both Sp1 and Sp3 pdf

... Biochem. 270) Ó FEBS 2003Gene transcription of fgl2 in endothelial cells is controlled by Ets-1 and Oct-1 and requires the presence of both Sp1 and Sp3Mingfeng Liu1, Julian L. Leibowitz2, ... Canada;2Department of Pathology and Laboratory Medicine, Texas A & M University System College of Medicine, USA;3Renal Division and Department of Medicine,St. Michael’s Hospital and University of Toronto, ... amounts of pPacUSp1 (50 ng, left panel) or increasing amount of Ets-1 with 50 ng of either Sp1 or Sp3. (B) Assay of fgl2 promoter activity upon cotransfection of thresholds amount of both Sp1 and...

Tài liệu Báo cáo khoa học: Analyzing changes of chromatin-bound replication proteins occurring in response to and after release from a hypoxic block of replicon initiation in T24 cells pptx

... staining of total cellular and chromatin-bound PCNAT24 were grown and incubated on coverslips. Two sets of hypoxic cells and of cells reoxygenated for 10 min and 30 min were prepared. One set of cells ... analyses of growing daughterstrandsA fast increase of the DNA synthesis rate either reﬂectsrelease of replicon initiations or stimulation of elongation,or both. To determine the cause of the ... distribution of pulse-labelednascent daughter strands by means of alkaline sedimenta-tion. Synchronous replicon initiations ﬁrst produce homo-geneously sized small daughter strands, which subsequentlygrow...

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