About: Ammonium ions affect metal toxicity in chamomile plants

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An Entity of Type : http://linked.opendata.cz/ontology/domain/vavai/Vysledek, within Data Space : linked.opendata.cz associated with source document(s)

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rdf:type	skos:Concept http://linked.opendata.cz/ontology/domain/vavai/Vysledek
Description	The impact of ammonium presence or absence on cadmium (Cd) and nickel (Ni) toxicity in chamomile (Matricaria chamomilla) was studied. Elimination of ammonium elevated tissue water content, amount of soluble proteins and Fv/Fmratio though responses differed between Cd and Ni. Antioxidative enzyme activities (ascorbate- and guaiacol-peroxidase) were also more enhanced in Cd than in Ni treatments without ammonium (in comparison with respective ammonium counterparts). Thiols rather decreased in shoots and increased in roots in the absence of ammonium. At the level of coumarin-related metabolites, ammonium absence typically elevated amount of herniarin glycoside precursor while %22stress%22 coumarin derivative umbelliferone decreased, indicating an additional negative impact of ammonium presence. Subsequently, total soluble phenols and PAL activity were not enhanced by ammonium absence. Mineral nutrients were not considerably affected with the exception of Fe and K that increased preferentially in the roots in the absence of ammonium. These data clearly show that ammonium presence is stressful alone or in the presence of metals and that ammonium is not a suitable alternative source of nitrogen. The impact of ammonium presence or absence on cadmium (Cd) and nickel (Ni) toxicity in chamomile (Matricaria chamomilla) was studied. Elimination of ammonium elevated tissue water content, amount of soluble proteins and Fv/Fmratio though responses differed between Cd and Ni. Antioxidative enzyme activities (ascorbate- and guaiacol-peroxidase) were also more enhanced in Cd than in Ni treatments without ammonium (in comparison with respective ammonium counterparts). Thiols rather decreased in shoots and increased in roots in the absence of ammonium. At the level of coumarin-related metabolites, ammonium absence typically elevated amount of herniarin glycoside precursor while %22stress%22 coumarin derivative umbelliferone decreased, indicating an additional negative impact of ammonium presence. Subsequently, total soluble phenols and PAL activity were not enhanced by ammonium absence. Mineral nutrients were not considerably affected with the exception of Fe and K that increased preferentially in the roots in the absence of ammonium. These data clearly show that ammonium presence is stressful alone or in the presence of metals and that ammonium is not a suitable alternative source of nitrogen. (en)
Title	Ammonium ions affect metal toxicity in chamomile plants Ammonium ions affect metal toxicity in chamomile plants (en)
skos:prefLabel	Ammonium ions affect metal toxicity in chamomile plants Ammonium ions affect metal toxicity in chamomile plants (en)
skos:notation	RIV/62156489:43210/14:00218841!RIV15-MSM-43210___
http://linked.open...avai/riv/aktivita	P
http://linked.open...avai/riv/aktivity	P(EE2.3.30.0017)
http://linked.open...iv/cisloPeriodika	September 2014
http://linked.open...vai/riv/dodaniDat	2015
http://linked.open...aciTvurceVysledku	Hedbávný, Josef Kováčik, Jozef
http://linked.open.../riv/druhVysledku	J - Článek v odborném periodiku
http://linked.open...iv/duvernostUdaju	S - Úplné a pravdivé údaje nepodléhající ochraně podle zvláštních právních předpisů
http://linked.open...titaPredkladatele	Mendelova univerzita v Brně / Agronomická fakulta
http://linked.open...dnocenehoVysledku	2341
http://linked.open...ai/riv/idVysledku	RIV/62156489:43210/14:00218841
http://linked.open...riv/jazykVysledku	eng - angličtina
http://linked.open.../riv/klicovaSlova	heavy metals; oxidative stress; phenolics; mineral nutrition (en)
http://linked.open.../riv/klicoveSlovo	phenolics heavy metals oxidative stress mineral nutrition
http://linked.open...odStatuVydavatele	NL - Nizozemsko
http://linked.open...ontrolniKodProRIV	[D72F02D93A89]
http://linked.open...i/riv/nazevZdroje	South African Journal of Botany
http://linked.open...in/vavai/riv/obor	ED
http://linked.open...ichTvurcuVysledku	2 (xsd:int)
http://linked.open...cetTvurcuVysledku	2 (xsd:int)
http://linked.open...vavai/riv/projekt	Postdocs in Biological Sciences at MENDELU
http://linked.open...UplatneniVysledku	2014
http://linked.open...v/svazekPeriodika	94
http://linked.open...iv/tvurceVysledku	Hedbávný, Josef Kováčik, Jozef
http://linked.open...ain/vavai/riv/wos	342480500028
issn	0254-6299
number of pages	6 (xsd:int)
http://bibframe.org/vocab/doi	10.1016/j.sajb.2014.06.016
http://localhost/t...ganizacniJednotka	43210

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