PATHOGEN IMPACT ON THE ACTIVITY DYNAMICS OF POTATO SUSPENSION CELLS EXTRA-CELLULAR PEROXIDASE
Journal Title: Журнал ÑтреÑÑ-физиологии и биохимии - Year 2005, Vol 1, Issue 1
Abstract
Changes in the activity of extracellular peroxidases were measured in cell suspension cultures of potato infected by Clavibacter michiganensis subsp. sepedonicus (Spieck. et Kotth.) Skapt et Burkh. The total extracellular peroxidases activity of the resistant potato variety was higher than that of the sensitive variety both before and after infection. The enzyme of the resistant variety had a рН optimum of 6.2, while that of the sensitive variety was 5.4. Extracellular peroxidases of the sensitive potato variety were activated 10 minutes after infection, and displayed highest activity 1.5-2 hours later. In the resistant variety, peroxidase activity rose sharply in the first minutes of infection, and second peak of activity occurred 1.5-2 hours later. The increase of extracellular peroxidases activity of the sensitive potato variety under pathogenesis is connected with the change of genome expression and synthesis of proteins. The increase of enzyme activity of resistant potato variety in the first moments of infection is not related to proteins synthesis and is apparently conditioned by the change of kinetic parameters.
Authors and Affiliations
I Graskova, O Potapenko, V Voinikov
Keywords
Related Articles
- EP ID EP149680
- DOI -
- Views 116
- Downloads 0
Protective effect of D-ribose against inhibition of rats testes function at excessive exercise
An increasing number of research studies point to participation in endurance exercise training as having significant detrimental effects upon reproductive hormonal profiles in men. The means used for prevention and corre...
Structural Carbohydrates and Lignifications Associated with Submergence Tolerance in Rice (Oryza sativa L.)
Role of structural carbohydrate content and lignifications in rice shoot were studied in three indica rice ([i]Oryza sativa[/i] L.) cultivars namely FR13A (tolerant to submergence), IR42 (susceptible to submergence) and...
The Content of Phenolic Compounds in the Pea Seedling Root Exudates Depends on the Size of Their Roots and Inoculation of Bacteria Mutualistic and Antagonistic Type of Interactions
The effect of the bacteria Rhizobium and Pseudomonas on total content of phenolic compounds (PC) and their individual components (apigenin, naringenin, dibutyl-ortho-phthalate, pisatin, N-phenyl-2-naphthylamine) in the r...
Shade and Drought Stress-Induced Changes in Phenolic Content of Wild Oat (Avena fatua L.) Seeds
Plants develop under a wide range of maternal environments, depending on the time of emergence, prevailing competition from other plants, and presence or absence of other biotic or abiotic stress factors. Stress factors,...
Attenuation of Chromium toxicity in mine waste water using water hyacinth
The mine waste water at South Kaliapani chromite mining area of Orissa (India) showed high levels of toxic hexavalent chromium (Cr[sup]+6[/sup]). Cr[sup]+6[/sup] contaminated mine waste water poses potential threats fo...