Ascorbate-glutathione protective system of maize plants under nickel ions action

• Main Authors: V. S. Bil’chuk, А. S. Rossikhina-Galycha
• Format: Article
• Language: English
• Published: Oles Honchar Dnipropetrovsk National University 2012-06-01
• Series: Vìsnik Dnìpropetrovsʹkogo Unìversitetu: Serìâ Bìologìâ, Medicina
• Online Access: http://medicine.dp.ua/index.php/med/article/view/108

Influence of nickel ions on growth reaction in maize seedlings of Orjitza 237MV hybrid and the content of low-molecular antioxidants in assimilation organs are investigated. The dependence of morphometric parameters of seedling roots and sprouts on the concentration of nickel ions is established. Considerable depression of growth and development of vegetative organs at a juvenile period occurs under long-term action of the metal in concentrations of 0.05–1.00 mM/l. The changes of reduced glutathione and ascorbic acid content under nickel ions influence are found in the leaves photosynthesizing tissue of the maize seedlings. It leads to a variation of the reducing activity in the tissues. The given fact can testify to an oxidizing stress under nickel ions effect and to participation of the low-molecular antioxidants in the plants adaptation to xenobiotics influence. Period of renewal of the glutathione and ascorbic acid metabolism in experimental samples was determined by the concentration of the nickel nitrate.