Responses of antioxidant systems to lanthanum nitrate treatments in tomato plants during drought stress

M.P. Ippolito, C. Fasciano, L. d'Aquino, F. Tommasi

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Abstract

Lanthanum is one of the most abundant elements in rare earths enriched fertilizers and is supposed to be one of the main responsible of the effects of such fertilizers on crops. In this work, the effect of lanthanum nitrate on H2O2production, lipid peroxidation, ascorbate and glutathione content, and on the activity of cytosolic ascorbate peroxidase, dehydroascorbate reductase, monodehydroascorbate reductase, and glutathione reductase in Lycopersicon esculentum L. cv. Marmande during drought stress was evaluated. The results confirmed that treatments of tomato plants with lanthanum nitrate affect the antioxidant cellular defences and that lanthanum toxicity is dependent on the way of treatment. The stimulation of antioxidant systems did not induce any improvement in drought stress responses in tomato but seemed to be only a consequence of the unbalance in cell metabolism due to the treatment with lanthanum nitrate. © 2011 Società Botanica Italiana.
Original languageEnglish
Pages (from-to)248 - 252
Number of pages5
JournalPlant Biosystems
Volume145
Issue number1
DOIs
Publication statusPublished - Mar 2011
Externally publishedYes

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All Science Journal Classification (ASJC) codes

  • Plant Science
  • Ecology, Evolution, Behavior and Systematics

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