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https://doi.org/10.2478/botcro-2014-0014

Responses of wheat (Triticum aestivum L.) and maize (Zea mays L.) plants to cadmium toxicity in relation to magnesium nutrition

Nataša Nikolić ; Department of Biology and Ecology, Faculty of Sciences, Trg Dositeja Obradovića 2, 21000 Novi Sad, Serbia.
Milan Borišev ; Department of Biology and Ecology, Faculty of Sciences, Trg Dositeja Obradovića 2, 21000 Novi Sad, Serbia.
Slobodanka Pajević ; Department of Biology and Ecology, Faculty of Sciences, Trg Dositeja Obradovića 2, 21000 Novi Sad, Serbia.
Milan Župunski ; Department of Biology and Ecology, Faculty of Sciences, Trg Dositeja Obradovića 2, 21000 Novi Sad, Serbia.
Mirjana Topić ; Department of Biology and Ecology, Faculty of Sciences, Trg Dositeja Obradovića 2, 21000 Novi Sad, Serbia.
Danijela Arsenov ; Department of Biology and Ecology, Faculty of Sciences, Trg Dositeja Obradovića 2, 21000 Novi Sad, Serbia.


Puni tekst: engleski pdf 133 Kb

str. 359-373

preuzimanja: 1.240

citiraj


Sažetak

The influence of cadmium (Cd) on physiological processes in wheat (Triticum aestivum L.) and maize (Zea mays L.) plants exposed to either optimal mineral nutrition or the absence of magnesium (Mg) as well as the accumulation of cadmium and magnesium in plant organs were studied using the method of water culture in a greenhouse. Cd treatment reduced shoot fresh mass more strongly in Mg-supplied than in Mg-deficient plants. Negative effect of Cd on photosynthetic activity was more pronounced in T. aestivum than in Z. mays plants. Cd treatment decreased leaf chlorophyll and carotenoid concentration in both Z. mays and T. aestivum, irrespective of the Mg supply. Cd was preferentially accumulated in the roots of both species. Catalase activity in T. aestivum leaves and roots was unaffected by Cd and Mg supply. Cd treatment did not affect Fe accumulation in the leaves of either species, while in the roots a considerable increase occurred, irrespective of the Mg nutrition. Higher tolerance of Z. mays and T. aestivum plants to Cd toxicity exposed to Mg deficiency could partly be ascribed to the preservation of Fe nutrition.

Ključne riječi

cadmium toxicity, growth, magnesium supply, photosynthetic activity, pigments, Triticum aestivum, tolerance, Zea mays

Hrčak ID:

127801

URI

https://hrcak.srce.hr/127801

Posjeta: 1.685 *