Description

• Title:
  Alleviation of nickel toxicity in wheat (Triticum aestivum L.) seedlings by selenium supplementation
• Creator:
  Gajewska, Ewa;
  Drobik, Daniel;
  Wielanek, Marzena;
  Sekulska-Nalewajko, Joanna;
  Gocławski, Jarosław;
  Mazur, Janusz;
  Skłodowska, Maria
• Description:
  Hydroponically grown wheat seedlings were treated with 50 μM N i and/or 15 μM Se. After a 7-day culture period, their growth parameters, N i, Se, F e, and M g contents, electrolyte leakage, photosynthetic pigment concentrations, and photochemical activity of photosystem II were determined. Exposure of wheat seedlings to N i alone resulted in reduction in the total shoot and root lengths, by 22% and 50%, respectively. Addition of Se to the N i-containing medium significantly improved the growth of these organs, compared to the seedlings subjected to N i alone. Application of Se decreased the accumulation of N i in shoots and roots and partially alleviated the N i-induced decrease in F e and M g concentations in shoots. Electrolyte leakage increased in response to N i stress, but in shoots it was diminished by Se supplementation. Exposure to N i led to a decrease in chlorophyll a and b contents and enhancement of chlorophyll a/b ratio, but did not influence the concentration of carotenoids. Enrichment of the N i-containing medium with Se significantly increased chlorophyll b content, compared to the seedlings treated with N i alone. Photochemical activity, estimated in terms of the maximum quantum yield of photosystem II , decreased in response to N i treatment but was significantly improved by simultaneous addition of Se. Results of our study suggest that alleviation of N i toxicity in wheat seedlings by Se supplementation may be related to limitation of N i uptake.
• Object availability:
  free access
• Date:
  2014.03.12
• Type:
  info:eu-repo/semantics/article;
  info:eu-repo/semantics/publishedVersion;
  Recenzowany artykuł
• Language:
  English
• Source:
  Biological Letters; Vol. 50 No. 2 (2013); 65-78;
  Biological Letters; Tom 50 Nr 2 (2013); 65-78;
  1734-7467;
  1644-7700
• Format:
  application/pdf
• Publisher:
  Adam Mickiewicz University Poznan
• Relation: http://pressto.amu.edu.pl/index.php/BIOLET/article/view/biolet-2013-0008/28698
• Subject:
  chlorophyll;
  electrolyte leakage;
  nickel stress;
  photochemical activity;
  selenium
• Identifier: http://pressto.amu.edu.pl/index.php/BIOLET/article/view/biolet-2013-0008
• Data provider:
  Platforma Otwartych Czasopism Naukowych UAM
• Can I use it?:
  seek permission
• Type:
  other