Cadmium-induced inhibition of photosynthesis and long-term acclimation to cadmium stress in the hyperaccumulator Thlaspi caerulescens

Lade...
Vorschaubild
Dateien
Zu diesem Dokument gibt es keine Dateien.
Datum
2007
Autor:innen
Parameswaran, Aravind
Trtilek, Martin
Setlik, Ivan
Herausgeber:innen
Kontakt
ISSN der Zeitschrift
Electronic ISSN
ISBN
Bibliografische Daten
Verlag
Schriftenreihe
Auflagebezeichnung
ArXiv-ID
Internationale Patentnummer
Angaben zur Forschungsförderung
Projekt
Open Access-Veröffentlichung
Sammlungen
Core Facility der Universität Konstanz
Gesperrt bis
Titel in einer weiteren Sprache
Forschungsvorhaben
Organisationseinheiten
Zeitschriftenheft
Publikationstyp
Zeitschriftenartikel
Publikationsstatus
Published
Erschienen in
New Phytologist. 2007, 175(4), pp. 655-674. ISSN 0028-646X. Available under: doi: 10.1111/j.1469-8137.2007.02139.x
Zusammenfassung

• Acclimation of hyperaccumulators to heavy metal-induced stress is crucial for phytoremediation and was investigated using the hyperaccumulator Thlaspi caerulescens and the non-accumulators T. fendleri and T. ochroleucum.
• The main technique was the measurement of spatially and spectrally resolved kinetics of in vivo absorbance and fluorescence with a novel fluorescence kinetic microscope.
• Key Results: While at the beginning of growth on cadmium all species suffered from toxicity, T. caerulescens completely recovered later. During stress, a few mesophyll cells in T. caerulescens became more inhibited and accumulated more Cd than the majority. This heterogeneity disappeared during acclimation. Chlorophyll fluorescence parameters related to photochemistry were more strongly affected by Cd-stress than non-photochemical parameters, and only photochemistry showed acclimation. In healthy plants, maximal PSII efficiency (Fv/Fm) was homogeneous from 650-790 nm. Cd-stress reduced Fv/Fm and ΦPSII stronger at 670-740nm compared to >740nm and <670nm. Cd enhanced nonphotochemical quenching mainly <690nm.
• Main Conclusions: Cd-acclimation in the Cd-hyperaccumulator T. caerulescens shows that part of its Cd tolerance is inducible and involves transient physiological heterogeneity as an emergency defence mechanism. Differential effects of Cd-stress on photochemical vs. non-photochemical parameters indicate that Cd inhibits the photosynthetic light reactions more than the Calvin-Benson cycle. Differential spectral distribution of Cd-effects on photochemical vs. non-photochemical quenching shows that Cd inhibits at least two different targets in/around PSII. Spectrally homogeneous Fv/Fm suggests that in healthy T. caerulescens all chlorophylls fluorescing at room temperature are PSII-associated.

Zusammenfassung in einer weiteren Sprache
Fachgebiet (DDC)
580 Pflanzen (Botanik)
Schlagwörter
Konferenz
Rezension
undefined / . - undefined, undefined
Zitieren
ISO 690KÜPPER, Hendrik, Aravind PARAMESWARAN, Barbara LEITENMAIER, Martin TRTILEK, Ivan SETLIK, 2007. Cadmium-induced inhibition of photosynthesis and long-term acclimation to cadmium stress in the hyperaccumulator Thlaspi caerulescens. In: New Phytologist. 2007, 175(4), pp. 655-674. ISSN 0028-646X. Available under: doi: 10.1111/j.1469-8137.2007.02139.x
BibTex
@article{Kupper2007Cadmi-15524,
  year={2007},
  doi={10.1111/j.1469-8137.2007.02139.x},
  title={Cadmium-induced inhibition of photosynthesis and long-term acclimation to cadmium stress in the hyperaccumulator Thlaspi caerulescens},
  number={4},
  volume={175},
  issn={0028-646X},
  journal={New Phytologist},
  pages={655--674},
  author={Küpper, Hendrik and Parameswaran, Aravind and Leitenmaier, Barbara and Trtilek, Martin and Setlik, Ivan}
}
RDF
<rdf:RDF
    xmlns:dcterms="http://purl.org/dc/terms/"
    xmlns:dc="http://purl.org/dc/elements/1.1/"
    xmlns:rdf="http://www.w3.org/1999/02/22-rdf-syntax-ns#"
    xmlns:bibo="http://purl.org/ontology/bibo/"
    xmlns:dspace="http://digital-repositories.org/ontologies/dspace/0.1.0#"
    xmlns:foaf="http://xmlns.com/foaf/0.1/"
    xmlns:void="http://rdfs.org/ns/void#"
    xmlns:xsd="http://www.w3.org/2001/XMLSchema#" > 
  <rdf:Description rdf:about="https://kops.uni-konstanz.de/server/rdf/resource/123456789/15524">
    <dc:contributor>Setlik, Ivan</dc:contributor>
    <dcterms:issued>2007</dcterms:issued>
    <dc:creator>Trtilek, Martin</dc:creator>
    <foaf:homepage rdf:resource="http://localhost:8080/"/>
    <dc:contributor>Küpper, Hendrik</dc:contributor>
    <dc:contributor>Leitenmaier, Barbara</dc:contributor>
    <dcterms:available rdf:datatype="http://www.w3.org/2001/XMLSchema#dateTime">2011-12-07T13:49:27Z</dcterms:available>
    <dcterms:title>Cadmium-induced inhibition of photosynthesis and long-term acclimation to cadmium stress in the hyperaccumulator Thlaspi caerulescens</dcterms:title>
    <dcterms:isPartOf rdf:resource="https://kops.uni-konstanz.de/server/rdf/resource/123456789/28"/>
    <dc:creator>Leitenmaier, Barbara</dc:creator>
    <dcterms:abstract xml:lang="eng">•	Acclimation of hyperaccumulators to heavy metal-induced stress is crucial for phytoremediation and was investigated using the hyperaccumulator Thlaspi caerulescens and the non-accumulators T. fendleri and T. ochroleucum.&lt;br /&gt;•	The main technique was the measurement of spatially and spectrally resolved kinetics of in vivo absorbance and fluorescence with a novel fluorescence kinetic microscope.&lt;br /&gt;•	Key Results: While at the beginning of growth on cadmium all species suffered from toxicity, T. caerulescens completely recovered later. During stress, a few mesophyll cells in T. caerulescens became more inhibited and accumulated more Cd than the majority. This heterogeneity disappeared during acclimation. Chlorophyll fluorescence parameters related to photochemistry were more strongly affected by Cd-stress than non-photochemical parameters, and only photochemistry showed acclimation. In healthy plants, maximal PSII efficiency (Fv/Fm) was homogeneous from 650-790 nm. Cd-stress reduced Fv/Fm and ΦPSII stronger at 670-740nm compared to &gt;740nm and &lt;670nm. Cd enhanced nonphotochemical quenching mainly &lt;690nm.&lt;br /&gt;•	Main Conclusions: Cd-acclimation in the Cd-hyperaccumulator T. caerulescens shows that part of its Cd tolerance is inducible and involves transient physiological heterogeneity as an emergency defence mechanism. Differential effects of Cd-stress on photochemical vs. non-photochemical parameters indicate that Cd inhibits the photosynthetic light reactions more than the Calvin-Benson cycle. Differential spectral distribution of Cd-effects on photochemical vs. non-photochemical quenching shows that Cd inhibits at least two different targets in/around PSII. Spectrally homogeneous Fv/Fm suggests that in healthy T. caerulescens all chlorophylls fluorescing at room temperature are PSII-associated.</dcterms:abstract>
    <dc:rights>terms-of-use</dc:rights>
    <dcterms:rights rdf:resource="https://rightsstatements.org/page/InC/1.0/"/>
    <dc:language>eng</dc:language>
    <dc:contributor>Trtilek, Martin</dc:contributor>
    <void:sparqlEndpoint rdf:resource="http://localhost/fuseki/dspace/sparql"/>
    <dc:date rdf:datatype="http://www.w3.org/2001/XMLSchema#dateTime">2011-12-07T13:49:27Z</dc:date>
    <dc:creator>Parameswaran, Aravind</dc:creator>
    <dspace:isPartOfCollection rdf:resource="https://kops.uni-konstanz.de/server/rdf/resource/123456789/28"/>
    <dc:creator>Setlik, Ivan</dc:creator>
    <dcterms:bibliographicCitation>Publ. in: New Phytologist ; 175 (2007), 4. - S. 655-674</dcterms:bibliographicCitation>
    <dc:contributor>Parameswaran, Aravind</dc:contributor>
    <dc:creator>Küpper, Hendrik</dc:creator>
    <bibo:uri rdf:resource="http://kops.uni-konstanz.de/handle/123456789/15524"/>
  </rdf:Description>
</rdf:RDF>
Interner Vermerk
xmlui.Submission.submit.DescribeStep.inputForms.label.kops_note_fromSubmitter
Kontakt
URL der Originalveröffentl.
Prüfdatum der URL
Prüfungsdatum der Dissertation
Finanzierungsart
Kommentar zur Publikation
Allianzlizenz
Corresponding Authors der Uni Konstanz vorhanden
Internationale Co-Autor:innen
Universitätsbibliographie
Ja
Begutachtet
Diese Publikation teilen