scholarly journals Some biochemical reactions of strawberry plants to infection with Botrytis cinerea and salicylic acid treatment

2013 ◽  
Vol 47 (2) ◽  
pp. 73-81 ◽  
Author(s):  
Urszula Małolepsza ◽  
Henryk Urbanek ◽  
Justyna Polit
Keyword(s):  
Superoxide Dismutase ◽  
Salicylic Acid ◽  
Phenolic Compounds ◽  
Botrytis Cinerea ◽  
Acid Treatment ◽  
Active Oxygen Species ◽  
Active Oxygen ◽  
Oxygen Species ◽  
Salicylic Acid Treatment ◽  
Biochemical Reactions

The reactions of strawberry plants to infection with <i>B. cinerea</i> and treatment with salicylic acid has been studied. Infection of leaves with <i>B. cinerea</i> resulted in early increases in active oxygen species generation, superoxide dismutase and peroxidase activities and phenolic compounds content. Some increases of the above reactions were noticed in plants treated with salicylic acid but not in the plants treated with SA and then later infected with <i>B. cinerea</i>.

Study on the Interaction of Ions of Transient Metals with Ascorbic Acid in the Presence of Different Scavengers of Active Oxygen Species in SOS Chromotes

2002 ◽  
Vol 72 (2) ◽  
pp. 85-89
Author(s):  
Jadwiga Marczewska ◽  
Jadwiga H. Koziorowska
Keyword(s):  
Ascorbic Acid ◽  
Superoxide Dismutase ◽  
Copper Ions ◽  
Active Oxygen Species ◽  
Active Oxygen ◽  
Oxygen Species ◽  
E Coli ◽  
Free Ions ◽  
Sos Chromotest ◽  
Transient Metals

SOS chromotest was employed to study the interaction of ascorbic acid with free ions of transient metals in the presence of added catalase, superoxide dismutase or D-mannitol. Catalase diminished the genotoxic activity of the mixture of ascorbic acid with copper ions in E. coli strains PQ37 and PQ 300, but genotoxicity of this mixture was not suppressed by superoxide dismutase and D-mannitol. The results suggest that copper ions diminished the content of peroxide generated by ascorbic acid.

scholarly journals Active Oxygen Species Metabolism in `White Angel' × `Rome Beauty' Apple Selections Resistant and Susceptible to Superficial Scald

1998 ◽  
Vol 123 (2) ◽  
pp. 299-304 ◽  
Author(s):  
Mulpuri V. Rao ◽  
Christopher B. Watkins ◽  
Susan K. Brown ◽  
Norman F. Weeden
Keyword(s):  
Superoxide Dismutase ◽  
Active Oxygen Species ◽  
Storage Period ◽  
Thiobarbituric Acid ◽  
Active Oxygen ◽  
Oxidation Products ◽  
Guaiacol Peroxidase ◽  
Oxygen Species ◽  
Superficial Scald ◽  
C Storage

Fruit from seedlings selected from a population obtained by crossing superficial scald-resistant `White Angel' and superficial scald-susceptible `Rome Beauty' apple (Malus ×domestica Borkh.) were used to investigate the role of oxidative processes in the development of superficial scald. Selections were identified for study based on fruit coloration and scald susceptibility. Plant material had one of the following three physiognomies: 1) red-skinned fruit resistant to scald; 2) red-skinned fruit susceptible to scald; and 3) yellow-skinned fruit susceptible to scald. The concentrations of α-farnesene, conjugated triene (CT) species, hydrogen peroxide (H2O2), thiobarbituric acid-reactive substances, carbonyl groups, and the activities of superoxide dismutase, guaiacol-peroxidase, and catalase were measured at harvest and during 0.5 °C storage. Relationships were poor between scald susceptibility and α-farnesene and its oxidation products, CT258, CT281, and the CT258/CT281 ratio. Tissue concentrations of H2O2 were lower in scald-resistant than in scald-susceptible fruit at harvest and after storage, and these lower concentrations were associated with less damage to cellular membranes (lipid peroxidation) and proteins (carbonyl group content). Higher activities of the H2O2-degrading enzymes, guaiacol-peroxidases, and catalases, were related to lower H2O2 content and lower scald susceptibility. Activities of superoxide dismutase, a H2O2-generating enzyme, were not related to scald susceptibility or storage period. We hypothesize that fruit susceptibility to scald is strongly influenced by cellular efficiency in metabolizing active oxygen species such as H2O2.

Sign in / Sign up

Export Citation Format

Share Document