Phytoextraction potential of sunflower and white mustard plants in zinc-contaminated soil

Phytoextraction relies on plants with a high capacity to absorb heavy metals and remove them from the soil. The objective of this study was to analyze the potential of sunflower (Helianthus annuus L.) and white mustard (Sinapis alba L.) for phytoextraction of Zn-contaminated soil. Research was based...

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Autores principales:	Zalewska,Marta, Nogalska,Anna
Lenguaje:	English
Publicado:	Instituto de Investigaciones Agropecuarias, INIA 2014
Materias:	Helianthus annuus Sinapis alba zinc accumulation zinc toxicity soil contamination
Acceso en línea:	http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0718-58392014000400016
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spelling	oai:scielo:S0718-583920140004000162018-10-01Phytoextraction potential of sunflower and white mustard plants in zinc-contaminated soilZalewska,MartaNogalska,Anna Helianthus annuus Sinapis alba zinc accumulation zinc toxicity soil contamination Phytoextraction relies on plants with a high capacity to absorb heavy metals and remove them from the soil. The objective of this study was to analyze the potential of sunflower (Helianthus annuus L.) and white mustard (Sinapis alba L.) for phytoextraction of Zn-contaminated soil. Research was based on a strict pot experiment conducted in a greenhouse. Seven treatments were established with increasing Zn concentrations: 0, 25, 50, 100, 200, 400, and 600 mg Zn kg-1 air-dry soil. The first tested plant was fodder sunflower. In the following year, white mustard was sown in the same pots. Plants were harvested at the end of the flowering stage. The toxic effect of Zn on sunflower yields occurred at the contamination level of 200 mg Zn kg-1 soil. In the second year of the experiment, a significant decrease in mustard biomass took place in response to 400 mg Zn kg-1 soil. The contamination level of 600 mg Zn kg-1 soil resulted in complete plant death. Plant growth was not inhibited even at high tissue Zn concentrations of 515 mg Zn kg-1 sunflower DM and 422 mg Zn kg-1 mustard DM. The 2-yr cropping system did not contribute to a significant decrease in soil Zn content. Despite high concentrations of Zn in sunflower and mustard plants, total Zn uptake accounted for only 1% to 8% of the Zn rate introduced into the soil. However, in the long run, the growing of crops could reduce Zn contamination levels in the soil. The relatively high tolerance of sunflower and white mustard for Zn contamination and rapid growth of these species are possible alternatives for phytoextraction and phytostabilization of Zn-contaminated soil.info:eu-repo/semantics/openAccessInstituto de Investigaciones Agropecuarias, INIAChilean journal of agricultural research v.74 n.4 20142014-12-01text/htmlhttp://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0718-58392014000400016en10.4067/S0718-58392014000400016
institution	Scielo Chile
collection	Scielo Chile
language	English
topic	Helianthus annuus Sinapis alba zinc accumulation zinc toxicity soil contamination
spellingShingle	Helianthus annuus Sinapis alba zinc accumulation zinc toxicity soil contamination Zalewska,Marta Nogalska,Anna Phytoextraction potential of sunflower and white mustard plants in zinc-contaminated soil
description	Phytoextraction relies on plants with a high capacity to absorb heavy metals and remove them from the soil. The objective of this study was to analyze the potential of sunflower (Helianthus annuus L.) and white mustard (Sinapis alba L.) for phytoextraction of Zn-contaminated soil. Research was based on a strict pot experiment conducted in a greenhouse. Seven treatments were established with increasing Zn concentrations: 0, 25, 50, 100, 200, 400, and 600 mg Zn kg-1 air-dry soil. The first tested plant was fodder sunflower. In the following year, white mustard was sown in the same pots. Plants were harvested at the end of the flowering stage. The toxic effect of Zn on sunflower yields occurred at the contamination level of 200 mg Zn kg-1 soil. In the second year of the experiment, a significant decrease in mustard biomass took place in response to 400 mg Zn kg-1 soil. The contamination level of 600 mg Zn kg-1 soil resulted in complete plant death. Plant growth was not inhibited even at high tissue Zn concentrations of 515 mg Zn kg-1 sunflower DM and 422 mg Zn kg-1 mustard DM. The 2-yr cropping system did not contribute to a significant decrease in soil Zn content. Despite high concentrations of Zn in sunflower and mustard plants, total Zn uptake accounted for only 1% to 8% of the Zn rate introduced into the soil. However, in the long run, the growing of crops could reduce Zn contamination levels in the soil. The relatively high tolerance of sunflower and white mustard for Zn contamination and rapid growth of these species are possible alternatives for phytoextraction and phytostabilization of Zn-contaminated soil.
author	Zalewska,Marta Nogalska,Anna
author_facet	Zalewska,Marta Nogalska,Anna
author_sort	Zalewska,Marta
title	Phytoextraction potential of sunflower and white mustard plants in zinc-contaminated soil
title_short	Phytoextraction potential of sunflower and white mustard plants in zinc-contaminated soil
title_full	Phytoextraction potential of sunflower and white mustard plants in zinc-contaminated soil
title_fullStr	Phytoextraction potential of sunflower and white mustard plants in zinc-contaminated soil
title_full_unstemmed	Phytoextraction potential of sunflower and white mustard plants in zinc-contaminated soil
title_sort	phytoextraction potential of sunflower and white mustard plants in zinc-contaminated soil
publisher	Instituto de Investigaciones Agropecuarias, INIA
publishDate	2014
url	http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0718-58392014000400016
work_keys_str_mv	AT zalewskamarta phytoextractionpotentialofsunflowerandwhitemustardplantsinzinccontaminatedsoil AT nogalskaanna phytoextractionpotentialofsunflowerandwhitemustardplantsinzinccontaminatedsoil
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Phytoextraction potential of sunflower and white mustard plants in zinc-contaminated soil

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