Strategy of Cr detoxification by Callitriche cophocarpa

Joanna Augustynowicz , Anna Kołton , Agnieszka Baran , Anna Kostecka-Gugała , Wojciech Lasek

Abstract

The present work focused on the qualitative and quantitative analysis of Cr detoxification strategy of aquatic cosmopolitan plant Callitriche cophocarpa. This plant species has just been described in the context of its unusual accumulation potential of Cr. The emphasis of the work was placed on the redox reaction Cr(VI)→Cr(III) which is considered to be remediation mechanism of highly reactive and mobile Cr(VI) ions. Plants were immersed for 5 days in 1 mM of Cr(VI) (potassium dichromate) or 1 mM of Cr(III) (chromium sulphate) solutions in semi-natural conditions. Cr was effectively removed from the solution up to the extent of Ca.58% or 35% of the starting amount, in the case of Cr(III) and Cr(VI), respectively. No plant-induced Cr(VI) reduction accompanying Cr accumulation was observed in Cr(VI) solutions except from the apparent one, noticed at the fourth day of incubation. On the contrary to these results, according to the method of electron paramagnetic resonance spectroscopy (L-band EPR), biphasic signal of Cr(V) attending Cr(VI) to Cr(III) reduction was detected inside the plant tissue every day of investigations. Our results show that phytoextraction but not phytostabilization is the main strategy of Cr detoxification by C. cophocarpa in aquatic systems.
Author Joanna Augustynowicz (FoH / DoBaPP)
Joanna Augustynowicz,,
- Department of Botany and Plant Physiology
, Anna Kołton (FoH / DoBaPP)
Anna Kołton,,
- Department of Botany and Plant Physiology
, Agnieszka Baran (FoAaE / DoAaECh)
Agnieszka Baran,,
- Department of Agricultural and Environmental Chemistry
, Anna Kostecka-Gugała (FoH / DoB)
Anna Kostecka-Gugała,,
- Department of Biochemistry
, Wojciech Lasek
Wojciech Lasek,,
-
Journal seriesCentral European Journal of Chemistry, ISSN 1895-1066, (A 25 pkt)
Issue year2013
Vol11
No2
Pages295-303
Publication size in sheets0.5
Keywords in EnglishCallitriche, chromium, EPR, phytoremediation, aquatic macrophytes
ASJC Classification2505 Materials Chemistry; 1600 General Chemistry
DOIDOI:10.2478/s11532-012-0161-8
URL http://link.springer.com/content/pdf/10.2478%2Fs11532-012-0161-8.pdf
Internal identifierWRE/2013/47
Languageen angielski
LicenseJournal (articles only); author's original; Uznanie Autorstwa - Użycie Niekomercyjne - Bez utworów zależnych (CC-BY-NC-ND); after publication
Score (nominal)25
Score sourcejournalList
Publication indicators WoS Citations = 8; Scopus SNIP (Source Normalised Impact per Paper): 2013 = 0.635; WoS Impact Factor: 2013 = 1.329 (2) - 2013=1.26 (5)
Citation count*6 (2016-06-02)
Additional fields
FinansowanieNarodowe Centrum Nauki grant DEC-2011/03/B/NZ9/00952
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