Evaluation of Multiple Responses Associated with Arsenic Tolerance and Accumulation in Pteris vittata L. Plants Exposed to High As Concentrations under Hydroponics
| Autor: | Fabrizio Pietrini, Lucia Pietrosanti, Massimo Zacchini, Valentina Iori, Angelo Massacci |
|---|---|
| Jazyk: | angličtina |
| Rok vydání: | 2020 |
| Předmět: |
0106 biological sciences
Frond lcsh:Hydraulic engineering Geography Planning and Development phytoremediation 010501 environmental sciences Aquatic Science Biology Photosynthesis 01 natural sciences Biochemistry lcsh:Water supply for domestic and industrial purposes lcsh:TC1-978 Botany heavy metals thiols 0105 earth and related environmental sciences Water Science and Technology lcsh:TD201-500 water pollution photosynthesis food and beverages Hydroponics biology.organism_classification Phytoremediation Bioaccumulation Pteris vittata Phytochelatin Fern phytofiltration 010606 plant biology & botany |
| Zdroj: | Water Volume 12 Issue 11 Water, Vol 12, Iss 3127, p 3127 (2020) Water (Basel) 12 (2020): 1–17. doi:10.3390/w12113127 info:cnr-pdr/source/autori:1Pietrini F.; 2Iori V.; 1Pietrosanti L.; 1Zacchini M.; 1Massacci A./titolo:Evaluation of multiple responses associated with arsenic tolerance and accumulation in pteris vittata l. Plants exposed to high as concentrations under hydroponics/doi:10.3390%2Fw12113127/rivista:Water (Basel)/anno:2020/pagina_da:1/pagina_a:17/intervallo_pagine:1–17/volume:12 |
| ISSN: | 2073-4441 |
| DOI: | 10.3390/w12113127 |
| Popis: | Chinese brake fern (Pteris vittata L.) is recognized as an arsenic hyperaccumulating plant. Mechanisms underlying this capability and the associated hypertolerance have been described even if not completely elucidated. In this study, with the aim to expand the knowledge on the matter, an experimental trial was developed to investigate an array of responses, at the morphological, physiological, and biochemical level, in P. vittata plants exposed to high As concentrations in a long-term experiment under hydroponics. Results confirmed the ability of fern plants to both tolerate and accumulate a remarkable amount of As, especially in fronds. Notably, in As-treated plants, a far higher As content was detected in young fronds compared to old fronds, with bioaccumulation (BCF) and translocation (Tf) factors in accordance. At the biochemical level, As treatment affected macro and micronutrient, thiol, and phytochelatin concentrations in fronds of treated plants differently than that of the control. Physiological measurements accounted for a reduction in the photosynthetic activity of As-treated plants in the absence of visual symptoms of damage. Overall, the observed As tolerance and accumulation processes were discussed, evidencing how young fronds developed during As treatment maintain their physiological status while accumulating a high As content. Such indications could be very useful to improve the effective utilization of this plant species for phytofiltration of As-polluted water. |
| Databáze: | OpenAIRE |
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