The effect of arsenic contamination on amino acids metabolism in Spinacia oleracea L

Ecotoxicology and Environmental Safety
Milan PavlíkPavel Tlustos

Abstract

Changes of amino acid concentrations (proline, glutamate, asparagine, aspartate, alanine) and glutamate kinase activity (GKA) in plants under arsenic chronic stress reported here reveal their role in plant arsenic stress adaptation. Results of the pot experiment confirmed the toxic effect of arsenic at tested levels (As1=25 mg As kg(-1) soil, As2=50 mg As kg(-1) soil, As3=75 mg As kg(-1) soil) for spinach. Growing available arsenic contents in soil were associated with the strong inhibition of above-ground biomass and with the enhancement of As plant content. The changes of glutamate, asparagine, aspartate and proline levels in the plants showed strong linear dependences on arsenic concentration in plants (R2=0.60-0.90). Compared to the untreated control, concentrations of free proline and aspartate of As3 treatment were enhanced up to 381% and 162%, respectively. The significant changes of glutamate were observed on As2 and As3 treatments (increased level up to 188, i.e. 617%). Arsenic in plants was shown to be an inhibitor of glutamase kinase activity (R2=0.91). Inhibition of GKA resulted in an increase in the content of glutamate that is used in synthesis of phytochelatins in plant cells. Concentration of alanine did not hav...Continue Reading

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Citations

Nov 30, 2012·Molecular Biology Reports·Patrik MészárosIldikó Matušíková
Oct 12, 2012·Environmental Science and Pollution Research International·Preeti TripathiBijan Adhikari
Jan 4, 2012·Ecotoxicology and Environmental Safety·Milan PavlíkJiřina Száková
Aug 12, 2015·Physiology and Molecular Biology of Plants : an International Journal of Functional Plant Biology·Fauzia SiddiquiSudhakar Srivastava
May 2, 2016·Journal of Hazardous Materials·Shiliang LiuMingdong Ma
Aug 22, 2016·Journal of Environmental Management·Kateřina BřendováPavel Tlustoš
May 20, 2018·The FEBS Journal·Natasha SienkiewiczAlan H Fairlamb
Feb 5, 2015·Physiology and Molecular Biology of Plants : an International Journal of Functional Plant Biology·Fauzia SiddiquiSudhakar Srivastava
Jun 20, 2020·Biological Trace Element Research·Ayan DeAnindya Sundar Panja
Jun 9, 2017·Environmental Science and Pollution Research International·Jinbao YinBing Wu
Dec 17, 2014·Environmental Science and Pollution Research International·Ozkan Aksakal, Nevzat Esim
Aug 13, 2013·Environmental Science. Processes & Impacts·S M BhattiB H Robinson
Dec 18, 2018·Ecotoxicology and Environmental Safety·Mingyan JiangQibing Chen
Aug 14, 2021·JGH Open : an Open Access Journal of Gastroenterology and Hepatology·Caroline J TuckPeter R Gibson
Sep 16, 2019·Computers in Biology and Medicine·Jai Woo LeeJiang Gui

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