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NADPH oxidase is involved in regulation of gene expression and ROS overproduction in soybean (Glycine max L.) seedlings exposed to cadmium

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Chmielowska-Bak J., Arasimowicz-Jelonek M., Izbianska K., Frontasyeva M., Zinicovscaia I., Guiance-Varela C., Deckert J.

Acta Societatis Botanicorum Poloniae

2017

tom 86

nr 2

Cadmium-induced oxidative burst is partially mediated by NADPH oxidase. The aim of the present research was to evaluate the role of NADPH oxidase in soybeans’ response to short-term cadmium stress. The application of an NADPH oxidase inhibitor, diphenyleneiodonium chloride (DPI), affected expression of two Cd-inducible genes, encoding DOF1 and MYBZ2 transcription factors. This effect was observed after 3 h of treatment. Interestingly, Cd-dependent increases in NADPH oxidase activity occurred only after a period of time ranging from 6 and 24 h of stress. Stimulation of the enzyme correlated in time with a significant accumulation of reactive oxygen species (ROS). Further analysis revealed that pharmacological inhibition of NADPH oxidase activity during 24 h of Cd stress does not affect Cd uptake, seedling growth, or the level of lipid peroxidation. The role of NADPH oxidase in the response of soybean seedlings to short-term Cd exposure is discussed.

Ograniczanie wyników

1 Acta Societatis Botanicorum Poloniae

1 Arasimowicz-Jelonek M.

1 Chmielowska-Bak J.

1 Deckert J.

1 Frontasyeva M.

1 Guiance-Varela C.

1 Izbianska K.

1 Zinicovscaia I.

1 2017

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NADPH oxidase is involved in regulation of gene expression and ROS overproduction in soybean (Glycine max L.) seedlings exposed to cadmium