Search Results

29 results

  1. CORESTA Meeting, Agronomy/Phytopathology, Bucharest, 2003, P 04

    Isolation, purification and properties of a lectin from alternaria Alternata mycelia cell walls

    ZHANG Chengsheng; LI Duochuan; KONG Fanyu
    Shandong Agricultural University, College of Plant Protection, Taian, Shandong, - Tobacco Research Institute of CAAS Qingzhou, Shandong, China.
    Recognition is a central event in a variety of biological phenomena and the first step in numerous processes based on cell-cell interactions. As the most external part of the cell, cell wall mediates the initial physical and chemical interaction between ...
  2. Bull. Spec. CORESTA Congress, Lisbon, 2000, p. 67, AP17

    Biochemical changes in ß-cryptogein - elicited tobacco: a possible basis of induced resistance

    EDREVA A.; BLANCARD D.; DELON R.; BONNET P.; RICCI P.
    Bulgarian Academy of Science, Institute of Genetics, Sofia, Bulgaria.
    ß-cryptogein, a proteinaceous elicitor from the phytopathogenic fungus Phytophthora cryptogea, is known to induce leaf necrosis in tobacco and non-specific resistance (expressed in the perinecrotic leaf area) against a wide range of tobacco pathogens, ...
  3. CORESTA Meeting, Agronomy/Phytopathology, Suzhou, 1999, AP24

    Genotypic and pathogenic variation among black shank of tobacco isolates of Phytophthora parasitica var. nicotianae from main tobacco regions of Yunnan Province and some tobacco regions of Shandong in China

    ZHANG Xiu Guo; LUO Wen Fu; LI Yun; ZHANG Tian Yu
    Agricultural University of Shandong, Dept. of Plant Pathology, Taian, China
    Pathogenic and genotypic variability among seven populations of Phytophthora parasitica var. nicotianae from individual tobacco fields in Qujing, Kunming, Honghe, Chuxiong, Yuxi, Dali of Yunnan province and Shandong were investigated using pathogenicity ...
  4. CORESTA Meeting, Agronomy/Phytopathology, Montreux, 1997, PT9

    Variability of Peronospora tabacina: an isoenzyme study

    EDREVA A.; DELON R.; COUSSIRAT J.C.
    (1) D. Kostov Inst. of Genetics, Bulgarian Academy of Sciences, Sofia, Bulgaria. (2) SEITA, lnstitut du Tabac, Bergerac, France
    The variability of P. tabacina A. populations was studied using the isoenzyme polymorphism of peroxidase, malate dehydrogenase and superoxidismutase. P. tabacina conidia from N. tabacum crops cultivated in distant areas of Europe (France-Bulgaria) were ...
  5. CORESTA Meeting, Agronomy/Phytopathology, Montreux,1997, PT13

    Morphological and cytological characteristics of somatic hybrids between N. tabacum and N. megalosiphon

    ILCHEVA V.; SAN L.H.; DORLHAC F.
    Bulgarian Academy of Science, Institute of Genetics, Sofia, Bulgaria.
    Somatic hybrid plants between N. tabacum (IVB (bar)) and N. megalosiphon (npt II) were recovered after polyethylene glycol (PEG)- mediated fusion and electrofusion. The hybrid calli were selected on plant regeneration medium on the basis of dual ...
  6. Bull. Spec. CORESTA Congress, Jerez de la Frontera, 1992, p. 58, AP12, ISSN.0525-6240

    Blue mold of tobacco : Biochemical and molecular mechanisms

    EDREVA A.; GEORGIEVA I.D.; COUSSIRAT J.C.; DELON R.
    Bulgarian Academy of Science, Institute of Genetics, Sofia, Bulgaria.
    Biochemical and molecular mechanisms underlying the pathogenesis of blue mold in tobacco are investigated. Profound shifts in the metabolism of diseased plant are established, related to enzymes with oxidative, hydrolytic and phenol synthesizing functions ...
  7. Bull. Spec. CORESTA Symposium, Kallithea, 1990, P. 142, 142, ISSN.0525-6240

    Transfer of cytoplasmic male sterility to Nicotiana tabacum L. by protoplast fusion

    NIKOVA V.; MENCZEL I.
    Institute of Genetics, Sofia, Bulgaria. Institute of Plant Physiology. Szeged. Hungary.
    Protoplast fusion was used for producing cytoplasmic male sterile (CMS) tobaccos within a shorter period of time (one year) than the conventional backcross method, for which several years are required. Mesophyl protoplasts of CMS line (N. tabacum cv. ...