Changes caused by heavy metals in micronutrient content and antioxidant system of forage grasses used for phytoremediation: an overview
ABSTRACT: An increase in the content of heavy metals in the environment causes many socio-environmental problems, and phytoremediation is a tool to reduce the environmental impact caused by these elements, with prospects for the use of forage grasses. This group of plants features characteristics fo...
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| Format: | Article |
| Language: | English |
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Universidade Federal de Santa Maria
2016-01-01
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| Series: | Ciência Rural |
| Subjects: | |
| Online Access: | http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0103-84782016005011109&lng=en&tlng=en |
| _version_ | 1811302274166685696 |
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| author | Flávio Henrique Silveira Rabêlo Lucélia Borgo |
| author_facet | Flávio Henrique Silveira Rabêlo Lucélia Borgo |
| author_sort | Flávio Henrique Silveira Rabêlo |
| collection | DOAJ |
| description | ABSTRACT: An increase in the content of heavy metals in the environment causes many socio-environmental problems, and phytoremediation is a tool to reduce the environmental impact caused by these elements, with prospects for the use of forage grasses. This group of plants features characteristics for the environment-decontamination process, but further studies are necessary about the damages caused by heavy metals on the uptake of cationic micronutrients and on the antioxidant system, which are essential processes for the growth of plants in contaminated sites. Exposure of forage grasses to heavy metals results in a lower content of Mn in the shoots of almost all plants, but the contents of Cu, Fe, and Zn vary according to heavy metal and forage grass. Activities of enzymes superoxide dismutase (SOD), ascorbate peroxidase (APX), catalase (CAT), and guaiacol peroxidase (GPX) usually increase to reduce the oxidative stress induced by heavy metals, but when the content of any of these metals is high, enzymatic activity is decreased. Scale of toxicity of heavy metals to forage grasses can be described as: Pb ≈ Cr > Cd ≈ As > Zn ≈ Cu ≈ Ni > Mn. |
| first_indexed | 2024-04-13T07:25:09Z |
| format | Article |
| id | doaj.art-cf0fc8aea7d0418e92a85c72f184f37e |
| institution | Directory Open Access Journal |
| issn | 1678-4596 |
| language | English |
| last_indexed | 2024-04-13T07:25:09Z |
| publishDate | 2016-01-01 |
| publisher | Universidade Federal de Santa Maria |
| record_format | Article |
| series | Ciência Rural |
| spelling | doaj.art-cf0fc8aea7d0418e92a85c72f184f37e2022-12-22T02:56:30ZengUniversidade Federal de Santa MariaCiência Rural1678-45962016-01-01010.1590/0103-8478cr20151291S0103-84782016005011109Changes caused by heavy metals in micronutrient content and antioxidant system of forage grasses used for phytoremediation: an overviewFlávio Henrique Silveira RabêloLucélia BorgoABSTRACT: An increase in the content of heavy metals in the environment causes many socio-environmental problems, and phytoremediation is a tool to reduce the environmental impact caused by these elements, with prospects for the use of forage grasses. This group of plants features characteristics for the environment-decontamination process, but further studies are necessary about the damages caused by heavy metals on the uptake of cationic micronutrients and on the antioxidant system, which are essential processes for the growth of plants in contaminated sites. Exposure of forage grasses to heavy metals results in a lower content of Mn in the shoots of almost all plants, but the contents of Cu, Fe, and Zn vary according to heavy metal and forage grass. Activities of enzymes superoxide dismutase (SOD), ascorbate peroxidase (APX), catalase (CAT), and guaiacol peroxidase (GPX) usually increase to reduce the oxidative stress induced by heavy metals, but when the content of any of these metals is high, enzymatic activity is decreased. Scale of toxicity of heavy metals to forage grasses can be described as: Pb ≈ Cr > Cd ≈ As > Zn ≈ Cu ≈ Ni > Mn.http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0103-84782016005011109&lng=en&tlng=enbiomassaestado nutricionalestresse oxidativopoluição ambiental. |
| spellingShingle | Flávio Henrique Silveira Rabêlo Lucélia Borgo Changes caused by heavy metals in micronutrient content and antioxidant system of forage grasses used for phytoremediation: an overview Ciência Rural biomassa estado nutricional estresse oxidativo poluição ambiental. |
| title | Changes caused by heavy metals in micronutrient content and antioxidant system of forage grasses used for phytoremediation: an overview |
| title_full | Changes caused by heavy metals in micronutrient content and antioxidant system of forage grasses used for phytoremediation: an overview |
| title_fullStr | Changes caused by heavy metals in micronutrient content and antioxidant system of forage grasses used for phytoremediation: an overview |
| title_full_unstemmed | Changes caused by heavy metals in micronutrient content and antioxidant system of forage grasses used for phytoremediation: an overview |
| title_short | Changes caused by heavy metals in micronutrient content and antioxidant system of forage grasses used for phytoremediation: an overview |
| title_sort | changes caused by heavy metals in micronutrient content and antioxidant system of forage grasses used for phytoremediation an overview |
| topic | biomassa estado nutricional estresse oxidativo poluição ambiental. |
| url | http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0103-84782016005011109&lng=en&tlng=en |
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