Root and Shoot Response to Nickel in Hyperaccumulator and Non-Hyperaccumulator Species
The soil–root interface is the micro-ecosystem where roots uptake metals. However, less than 10% of hyperaccumulators’ rhizosphere has been examined. The present study evaluated the root and shoot response to nickel in hyperaccumulator and non-hyperaccumulator species, through the analysis of root s...
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MDPI AG
2021-03-01
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| Series: | Plants |
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| Online Access: | https://www.mdpi.com/2223-7747/10/3/508 |
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| author | Stefano Rosatto Mauro Mariotti Sara Romeo Enrica Roccotiello |
| author_facet | Stefano Rosatto Mauro Mariotti Sara Romeo Enrica Roccotiello |
| author_sort | Stefano Rosatto |
| collection | DOAJ |
| description | The soil–root interface is the micro-ecosystem where roots uptake metals. However, less than 10% of hyperaccumulators’ rhizosphere has been examined. The present study evaluated the root and shoot response to nickel in hyperaccumulator and non-hyperaccumulator species, through the analysis of root surface and biomass and the ecophysiological response of the related aboveground biomass. Ni-hyperaccumulators <i>Alyssoides utriculata</i> (L.) Medik. and <i>Noccaea caerulescens</i> (J. Presl and C. Presl) F.K. Mey. and non-hyperaccumulators <i>Alyssum montanum</i> L. and <i>Thlaspi arvense</i> L. were grown in pot on Ni-spiked soil (0–1000 mg Ni kg<sup>−1</sup>, total). Development of root surfaces was analysed with ImageJ; fresh and dry root biomass was determined. Photosynthetic efficiency was performed by analysing the fluorescence of chlorophyll a to estimate the plants’ physiological conditions at the end of the treatment. Hyperaccumulators did not show a Ni-dependent decrease in root surfaces and biomass (except Ni 1000 mg kg<sup>−1</sup> for <i>N. caerulescens</i>). The non-hyperaccumulator <i>A. montanum</i> suffers metal stress which threatens plant development, while the excluder <i>T. arvense</i> exhibits a positive ecophysiological response to Ni. The analysis of the root system, as a component of the rhizosphere, help to clarify the response to soil nickel and plant development under metal stress for bioremediation purposes. |
| first_indexed | 2024-03-10T13:24:16Z |
| format | Article |
| id | doaj.art-86037c3e7d284de6a98ab5e27275cad9 |
| institution | Directory Open Access Journal |
| issn | 2223-7747 |
| language | English |
| last_indexed | 2024-03-10T13:24:16Z |
| publishDate | 2021-03-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Plants |
| spelling | doaj.art-86037c3e7d284de6a98ab5e27275cad92023-11-21T09:47:43ZengMDPI AGPlants2223-77472021-03-0110350810.3390/plants10030508Root and Shoot Response to Nickel in Hyperaccumulator and Non-Hyperaccumulator SpeciesStefano Rosatto0Mauro Mariotti1Sara Romeo2Enrica Roccotiello3Laboratory of Plant Biology, DISTAV-Department of Earth, Environment and Life Sciences, University of Genoa, Corso Europa 26, 16132 Genova, ItalyLaboratory of Plant Biology, DISTAV-Department of Earth, Environment and Life Sciences, University of Genoa, Corso Europa 26, 16132 Genova, ItalyLaboratory of Plant Biology, DISTAV-Department of Earth, Environment and Life Sciences, University of Genoa, Corso Europa 26, 16132 Genova, ItalyLaboratory of Plant Biology, DISTAV-Department of Earth, Environment and Life Sciences, University of Genoa, Corso Europa 26, 16132 Genova, ItalyThe soil–root interface is the micro-ecosystem where roots uptake metals. However, less than 10% of hyperaccumulators’ rhizosphere has been examined. The present study evaluated the root and shoot response to nickel in hyperaccumulator and non-hyperaccumulator species, through the analysis of root surface and biomass and the ecophysiological response of the related aboveground biomass. Ni-hyperaccumulators <i>Alyssoides utriculata</i> (L.) Medik. and <i>Noccaea caerulescens</i> (J. Presl and C. Presl) F.K. Mey. and non-hyperaccumulators <i>Alyssum montanum</i> L. and <i>Thlaspi arvense</i> L. were grown in pot on Ni-spiked soil (0–1000 mg Ni kg<sup>−1</sup>, total). Development of root surfaces was analysed with ImageJ; fresh and dry root biomass was determined. Photosynthetic efficiency was performed by analysing the fluorescence of chlorophyll a to estimate the plants’ physiological conditions at the end of the treatment. Hyperaccumulators did not show a Ni-dependent decrease in root surfaces and biomass (except Ni 1000 mg kg<sup>−1</sup> for <i>N. caerulescens</i>). The non-hyperaccumulator <i>A. montanum</i> suffers metal stress which threatens plant development, while the excluder <i>T. arvense</i> exhibits a positive ecophysiological response to Ni. The analysis of the root system, as a component of the rhizosphere, help to clarify the response to soil nickel and plant development under metal stress for bioremediation purposes.https://www.mdpi.com/2223-7747/10/3/508dose-responseecophysiologyfacultative hyperaccumulatormetal uptake |
| spellingShingle | Stefano Rosatto Mauro Mariotti Sara Romeo Enrica Roccotiello Root and Shoot Response to Nickel in Hyperaccumulator and Non-Hyperaccumulator Species Plants dose-response ecophysiology facultative hyperaccumulator metal uptake |
| title | Root and Shoot Response to Nickel in Hyperaccumulator and Non-Hyperaccumulator Species |
| title_full | Root and Shoot Response to Nickel in Hyperaccumulator and Non-Hyperaccumulator Species |
| title_fullStr | Root and Shoot Response to Nickel in Hyperaccumulator and Non-Hyperaccumulator Species |
| title_full_unstemmed | Root and Shoot Response to Nickel in Hyperaccumulator and Non-Hyperaccumulator Species |
| title_short | Root and Shoot Response to Nickel in Hyperaccumulator and Non-Hyperaccumulator Species |
| title_sort | root and shoot response to nickel in hyperaccumulator and non hyperaccumulator species |
| topic | dose-response ecophysiology facultative hyperaccumulator metal uptake |
| url | https://www.mdpi.com/2223-7747/10/3/508 |
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