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2013 | 35 | 01 |

Tytuł artykułu

Nitric oxide acts as a signal molecule in microwave pretreatment induced cadmium tolerance in wheat seedlings

Warianty tytułu

Języki publikacji

EN

Abstrakty

EN
The microwave has been widely used in the field of biology with the development of microwave technology. Previous studies suggest that suitable doses of microwave irradiation improved plant metabolism and enzymatic activities under cadmium stress and enhanced cadmium tolerance in wheat seedlings. The objective of this study was to test whether nitric oxide is involved in microwave pretreatment induced cadmium tolerance in wheat seedlings due to its nature as a second messenger in stress responses. Plant were treated with 10 s microwave pretreatment, microwave pretreatment in combination with NO scavenger, 2-(4-carboxyphenyl)- 4, 4,5,5-tetramethylimidazoline-1-oxyl-3-oxide (cPTIO) and their effects on the lipid peroxidation, the activities of antioxidant enzymes, the concentration of antioxidant compounds and wheat seedlings growth and development were compared. The results showed that 10 s microwave pretreatment dramatically alleviated growth suppression induced by cadmium stress, reflected by decreased malondialdehyde, hydrogen peroxide and superoxide radical production. Furthermore, the activities of antioxidant enzymes (superoxide dismutase, peroxidase, catalase, ascorbate peroxidase and glutathione reductase) and the concentration of antioxidant metabolites (ascorbate, reduced glutathione, carotenoids and nitric oxide) were increased in wheat seedlings pretreated with microwave under cadmium stress. Nevertheless, the promotive effect of microwave pretreatment induced cadmium tolerance in wheat seedlings was effectively reversed by the addition of 0.5 % (w/v) cPTIO (NO scavenger), suggesting that NO was involved in microwave pretreatment induced cadmium tolerance in wheat seedlings.

Słowa kluczowe

Wydawca

-

Rocznik

Tom

35

Numer

01

Opis fizyczny

p.65-73,fig.,ref.

Twórcy

autor
  • College of Life Sciences, Henan Normal University, 46 Jianshe Road, Xinxiang 453007, People’s Republic of China
autor
  • College of Life Sciences, Henan Normal University, 46 Jianshe Road, Xinxiang 453007, People’s Republic of China
autor
  • College of Life Sciences, Henan Normal University, 46 Jianshe Road, Xinxiang 453007, People’s Republic of China
autor
  • College of Life Sciences, Henan Normal University, 46 Jianshe Road, Xinxiang 453007, People’s Republic of China
autor
  • College of Life Sciences, Henan Normal University, 46 Jianshe Road, Xinxiang 453007, People’s Republic of China

Bibliografia

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Bibliografia

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