ArticlePlant physiology1998
Altered Zn compartmentation in the root symplasm and stimulated Zn absorption into the leaf as mechanisms involved in Zn hyperaccumulation in thlaspi caerulescens
Article in Plant physiology, 1998. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 44 papers.
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Who cites it
44 citing papers in PubMed.
- Effects of Zinc on Metallicolous and Non-Metallicolous Populations ofPlants (Basel, Switzerland) · 2025Article
- Low concentrations of methyl jasmonate promote plant growth and mitigate Cd toxicity in Cosmos bipinnatus.BMC plant biology · 2024Article
- A Hormetic Spatiotemporal Photosystem II Response Mechanism of Salvia to Excess Zinc Exposure.International journal of molecular sciences · 2022Article
- Lead, zinc tolerance mechanism and phytoremediation potential of Alcea rosea (Linn.) Cavan. and Hydrangea macrophylla (Thunb.) Ser. and ethylenediaminetetraacetic acid effect.Environmental science and pollution research international · 2022Article
- Interaction between zinc and selenium bio-fortification and toxic metals (loid) accumulation in food crops.Frontiers in plant science · 2022Review
- Effects of Cadmium on Root Morpho-Physiology of Durum Wheat.Frontiers in plant science · 2022Article
- Low-molecular-weight ligands in plants: role in metal homeostasis and hyperaccumulation.Photosynthesis research · 2021Review
- Suppression ofInternational journal of molecular sciences · 2021Article
- Zinc Hyperaccumulation in Plants: A Review.Plants (Basel, Switzerland) · 2020Review
- Zn/Cd status-dependent accumulation of Zn and Cd in root parts in tobacco is accompanied by specific expression of ZIP genes.BMC plant biology · 2020Article
- Novel Insights Into the Hyperaccumulation Syndrome inFrontiers in plant science · 2020Article
- Enhancement of phytoextraction by Taiwanese chenopod and Napier grass by soapnut saponin and EDDS additions.Environmental science and pollution research international · 2019Article
- Investigation of low-levelEnvironmental science and pollution research international · 2017Article
- The impact of Ni on the physiology of a Mediterranean Ni-hyperaccumulating plant.Environmental science and pollution research international · 2016Article
- Extraction of heavy metals from contaminated soil by Cinnamomum camphora.Ecotoxicology (London, England) · 2014Article
- Phytoremediation of heavy metal contaminated soil by Jatropha curcas.Ecotoxicology (London, England) · 2014Article
- Vacuolar sequestration capacity and long-distance metal transport in plants.Frontiers in plant science · 2014Review
- Chromium phytoextraction from tannery effluent-contaminated soil by Crotalaria juncea infested with Pseudomonas fluorescens.Environmental science and pollution research international · 2014Article
- Metal species involved in long distance metal transport in plants.Frontiers in plant science · 2014Review
- Compartmentation and complexation of metals in hyperaccumulator plants.Frontiers in plant science · 2013Review
Corrections and comments
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Authors and funding
3 authors.
Funding
No grant is acknowledged in the PubMed record.
Abstract
We investigated Zn compartmentation in the root, Zn transport into the xylem, and Zn absorption into leaf cells in Thlaspi caerulescens, a Zn-hyperaccumulator species, and compared them with those of a related nonaccumulator species, Thlaspi arvense. 65Zn-compartmental analysis conducted with roots of the two species indicated that a significant fraction of symplasmic Zn was stored in the root vacuole of T. arvense, and presumably became unavailable for loading into the xylem and subsequent translocation to the shoot. In T. caerulescens, however, a smaller fraction of the absorbed Zn was stored in the root vacuole and was readily transported back into the cytoplasm. We conclude that in T. caerulescens, Zn absorbed by roots is readily available for loading into the xylem. This is supported by analysis of xylem exudate collected from detopped Thlaspi species seedlings. When seedlings of the two species were grown on either low (1 &mgr;M) or high (50 &mgr;M) Zn, xylem sap of T. caerulescens contained approximately 5-fold more Zn than that of T. arvense. This increase was not correlated with a stimulated production of any particular organic or amino acid. The capacity of Thlaspi species cells to absorb 65Zn was studied in leaf sections and leaf protoplasts. At low external Zn levels (10 and 100 &mgr;M), there was no difference in leaf Zn uptake between the two Thlaspi species. However, at 1 mM Zn2+, 2.2-fold more Zn accumulated in leaf sections of T. caerulescens. These findings indicate that altered tonoplast Zn transport in root cells and stimulated Zn uptake in leaf cells play a role in the dramatic Zn hyperaccumulation expressed in T. caerulescens.
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Registered trials
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