Zobrazeno 1 - 10
of 14
pro vyhledávání: '"Wolfgang F. Osswald"'
Autor:
Wolfgang Moder, Hamed Doostdar, Anke Bunk, R. P. Niedz, Wolfgang F. Osswald, Arnd Albrecht, Roy E. McDonald, Richard T. Mayer
Publikováno v:
Journal of Plant Physiology. 154:296-301
Summary Two acidic chitinases (E.C. 3.2.1.14) were purified from embryogenic Citrus sinensis L. Osbeck cv. callus tissue culture medium. The two proteins showed chitinase and chitosanase activity but no lysozyme activity. The enzyme activities decrea
Publikováno v:
Journal of Plant Physiology. 153:276-280
Summary Dihydrofusarubin, marticin and isomarticin are naphthazarin toxins produced by Fusarium solani , a pathogen of citrus, peas and tomato. Like other p-quinones such as 1,4-naphthoquinone, menadione or juglone, these compounds can be reductively
Autor:
Ingrid Heiser, Robert A. Baker, Wolfgang F. Osswald, Stan Nemec, Ute Rohnert, Erich F. Elstner
Publikováno v:
Journal of Plant Physiology. 153:684-692
Summary Naphthazarin toxins such as dihydrofusarubin, marticin, isomarticin and methyljavanicin are produced by Fusarium solani , a pathogen for citrus, peas and tomatoes. Similar to other p-quinones such as several members of the anthraquinone- or 1
Autor:
Heiser Ingrid, Robert A. Baker, Erich F. Elstner, Arnd Albrecht, Stan Nemec, Wolfgang F. Osswald
Publikováno v:
Journal of Plant Physiology. 153:462-468
Summary The effects of the Fusarium solani toxin dihydrofusarubin on tobacco leaves and on spinach chloroplasts have been studied in comparison with the herbicide methylviologen. Toxin treatment of tobacco leaves and leaf discs resulted in a light de
Publikováno v:
Journal of Plant Physiology. 152:230-234
Summmary In the presence of riboflavin benzylaminopurine (BAP) induces ethane formation from a-linolenic acid in the light. Addition of Cu 2+ -ions leads to the formation of ethylene at the expense of ethane. Ethylene release from α-linolenic acid s
Publikováno v:
Biochimica et Biophysica Acta (BBA) - Gene Structure and Expression. 1351:22-26
A citrus cDNA encoding a class II acidic chitinase was isolated from a nonembryogenic cell line of sweet orange using the tobacco cDNA clone PROB3. Northern blot analysis revealed that the corresponding mRNA is expressed in young, green bark but not
Autor:
Hamed Doostdar, C. J. Hearn, Randall P. Niedz, Wolfgang F. Osswald, Richard T. Mayer, Roy E. McDonald, Campbell J. Nairn, Jeffrey P. Shapiro
Publikováno v:
Plant and Cell Physiology. 35:811-820
Acidic chitinases (EC 3.2.1.14) were isolated and characterized from 4-week-old nonembryogenic Citrus sinensis L. Osbeck cv 'Valencia' callus tissue. The enzymes were purified using size exclusion, anion exchange, and chromatofocusing HPLC techniques
Publikováno v:
Experientia. 49:888-892
Several acidic chitinase and chitosanase isoforms were found in 4-week-old nonembryogenic sweet orange (‘Valencia’ [Citrus sinensis (L.) Osbeck]) callus tissue. Two isoforms (designated A1-CF1 and A1-CF2) were purified to homogeneity using HPLC s
Publikováno v:
Analytical Biochemistry. 204:40-46
A quantitative fluorometric assay for chitosanase activity in bacterial and plant tissues was developed. The assay can be conducted with either finely milled preparations of chitosan in suspension or dissolved chitosan; activity is based on measureme
Publikováno v:
Journal of Plant Physiology. 134:510-513
Summary An in vitro system is described in which ethylene formation from the amino acid, 1-aminocyclopropane- 1-carboxylic acid (ACC), is catalyzed by horseradish peroxidase (HRP) in the presence of Mn 2+ and p-hydroxyacetophenone (pHAP) as cofactors