http://www.cnr.it/ontology/cnr/individuo/prodotto/ID282900
Evaluation of nickel tolerance in Amaranthus paniculatus L. plants by measuring photosynthesis, oxidative status, antioxidative response and metal-binding molecule content (Articolo in rivista)
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- Label
- Evaluation of nickel tolerance in Amaranthus paniculatus L. plants by measuring photosynthesis, oxidative status, antioxidative response and metal-binding molecule content (Articolo in rivista) (literal)
- Anno
- 2014-01-01T00:00:00+01:00 (literal)
- Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#doi
- 10.1007/s11356-014-3349-y (literal)
- Alternative label
Fabrizio Pietrini 1, Valentina Iori 1, Alexandra Cheremisina 2,
Nina I. Shevyakova 2, Nataliya Radyukina 2, Vladimir V. Kuznetsov 2, Massimo Zacchini1 (2014)
Evaluation of nickel tolerance in Amaranthus paniculatus L. plants by measuring photosynthesis, oxidative status, antioxidative response and metal-binding molecule content
in Environmental science and pollution research international
(literal)
- Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#autori
- Fabrizio Pietrini 1, Valentina Iori 1, Alexandra Cheremisina 2,
Nina I. Shevyakova 2, Nataliya Radyukina 2, Vladimir V. Kuznetsov 2, Massimo Zacchini1 (literal)
- Rivista
- Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#affiliazioni
- 1 IBAF-CNR
2 IPP-RAS (literal)
- Titolo
- Evaluation of nickel tolerance in Amaranthus paniculatus L. plants by measuring photosynthesis, oxidative status, antioxidative response and metal-binding molecule content (literal)
- Abstract
- Among metals, Ni has been indicated as one of the
most dangerous for the environment, and plants exposed to
this metal are frequently reported to undergo a severe stress
condition. In this work, the tolerance responses to different Ni
concentrations at physiological and biochemical levels were
evaluated in Amaranthus paniculatus L., a plant species previously
characterised for their ability to phytoremove Ni from
metal-spiked water. Results indicated a good metal tolerance
of this plant species at environmentally relevant Ni concentrations,
while clear symptoms of oxidative damages were
detected at higher Ni concentrations, both in roots and leaves,
by measuring lipid peroxide content. At the photosynthetic
level, pigment content determination, chlorophyll fluorescence
image analysis and gas-exchange parameter measurements
revealed a progressive impairment of the photosynthetic
machinery at increasing Ni concentrations in the solution.
Regarding biochemical mechanisms involved in antioxidative
defence and metal binding, antioxidative enzyme (ascorbate
peroxidase, APX; catalase, CAT; guaiacol peroxidase, GPX;
superoxide dismutase, SOD) activity, polyamine (PA) content,
polyamine oxidase (PAO) activity and organic acid (OA)
content were differently affected by Ni concentration in the
growth solution. A role for GPX, SOD, PAs, and oxalic and
citric acid in Ni detoxification is suggested. These results can
contribute to elucidate the tolerance mechanisms carried out
by plants when facing environmentally relevant Ni concentrations
and to identify some traits characterising the physiological
and biochemical responses of Amaranthus plants to the
presence and bioaccumulation of Ni. (literal)
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