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Effect of temperature on guaiacol peroxidase of Pyrus communis

100%

Saeidian S., Ghasemifar E.

International Letters of Natural Sciences

2013

tom 05

Peroxidase (EC 1.11.1.7; donor: hydrogen-peroxide oxidoreductase, POD) is one of the key enzymes controlling plant growth, differentiation and development. The enzyme participates in construction, rigidification and eventual lignification of cell walls, biosynthesis of ethylene from 1-aminocyclopropane-1-carboxylic acid and H2O2, regulation of auxin level through auxin catabolism, protection of tissue from damage and infection by pathogenic microorganisms, the oxidation of indoleacetic acid. For peroxidase activity in wild pears extract one pH optimum was observed at 6.5 that probably belong to atleast one isoenzyme. Activity of peroxidase in presence of guaiacol and H2O2 was optimum after incubation at 40 °C. Maximum activity of peroxidase is 300 % .Activity increased to 240 %, 300 %, 70 % and 10 % after 60 minute incubation at 30, 40, 45 and 60 °C for peroxidase. Incubation at high temperature (70 °C) was accompanied with decrease of activity to 10 % peroxidase activity.

Pretreatment with salicylic acid and nitric oxide mitigated silver nanoparticles toxicity and enhanced their removal in medicinal Phlomis tuberosa plants

80%

Ghasemifar E., Habibi G., Bakhshi-Khaniki G.

Acta Biologica Cracoviensia. Series Botanica

2022

tom 64

nr 2

Ograniczanie wyników

1 Acta Biologica Cracoviensia. Series Botanica

1 International Letters of Natural Sciences

2 Ghasemifar E.

1 Bakhshi-Khaniki G.

1 Habibi G.

1 Saeidian S.

1 2022

1 2013

Wyniki wyszukiwania

Effect of temperature on guaiacol peroxidase of Pyrus communis

Pretreatment with salicylic acid and nitric oxide mitigated silver nanoparticles toxicity and enhanced their removal in medicinal Phlomis tuberosa plants