oru.sePublikasjoner
Endre søk
RefereraExporteraLink to record
Permanent link

Direct link
Referera
Referensformat
  • apa
  • ieee
  • modern-language-association-8th-edition
  • vancouver
  • Annet format
Fler format
Språk
  • de-DE
  • en-GB
  • en-US
  • fi-FI
  • nn-NO
  • nn-NB
  • sv-SE
  • Annet språk
Fler språk
Utmatningsformat
  • html
  • text
  • asciidoc
  • rtf
Ultraviolet-B radiation exposure lowers the antioxidant capacity in the Arabidopsis thaliana pdx1.3-1mutant and leads to glucosinolate biosynthesis alteration in both wild type and mutant
Division of Quality and Sensory of Plant Products, University of Göttingen, Göttingen, Germany.
bDepartment of Plant Biology, University of Pécs, Pécs, Hungary.
bDepartment of Plant Biology, University of Pécs, Pécs, Hungary.
Department of Plant Quality and Food Security, Leibniz Institute of Vegetable and Ornamental Crops, Großbeeren, Germany.
Vise andre og tillknytning
2019 (engelsk)Inngår i: Photochemical and Photobiological Sciences, ISSN 1474-905X, E-ISSN 1474-9092Artikkel i tidsskrift (Fagfellevurdert) Epub ahead of print
Abstract [en]

Pyridoxine (vitamin B6) and its vitamers are used by living organisms both as enzymatic cofactors and as antioxidants. We used Arabidopsis pyridoxine biosynthesis mutant pdx1.3-1to study involvement of the PLP-synthase main polypeptide PDX1 in plant responses to ultraviolet radiation of two different qualities, one containing primarily UV-A (315-400 nm), the other containing both UV-A and UV-B (280-315 nm). The antioxidant capacity and the flavonoid and glucosinolate (GS) profiles were examined. As indicator of stress, F⁠v/F⁠mof photosystem II reaction centers was used. In pdx1.3-1, UV-A+B exposure led to a significant 5% decrease in F⁠v/F⁠mon the last day (day 15), indicating mild stress at this time point. Antioxidant capacity of Col-0 wildtype increased significantly (50-73%) after 1 and 3 days of UV-A+B. Instead, in pdx1.3-1, the antioxidant capacity significantly decreased by 44-52% over the same time period, proving the importance of a full complement of functional PDX1genes for detoxification of reactive oxygen species. There were no significant changes in flavonoid glycoside profile under any light condition. However, the GS profile was significantly altered, both with respect to Arabidopsis accession and exposure to UV. The difference in flavonoid and GS profiles reflect that the GS biosynthesis pathway contains at least one pyridoxine-dependent enzyme, whereas no such enzyme is used in flavonoid biosynthesis. Also, there was strong correlation between the antioxidant capacity and the content of some GS compounds. Our results show that vitamin B6vitamers, functioning both as antioxidants and co-factors, are of importance for physiological fitness of plants.

sted, utgiver, år, opplag, sider
Royal Society of Chemistry, 2019.
HSV kategori
Forskningsprogram
Biokemi
Identifikatorer
URN: urn:nbn:se:oru:diva-78129OAI: oai:DiVA.org:oru-78129DiVA, id: diva2:1372968
Prosjekter
UV4quality
Forskningsfinansiär
Swedish Research Council Formas, 942-2015-516Knowledge Foundation, 20130164Tilgjengelig fra: 2019-11-25 Laget: 2019-11-25 Sist oppdatert: 2020-01-22

Open Access i DiVA

Fulltekst mangler i DiVA

Personposter BETA

Strid, Åke

Søk i DiVA

Av forfatter/redaktør
Strid, Åke
Av organisasjonen
I samme tidsskrift
Photochemical and Photobiological Sciences

Søk utenfor DiVA

GoogleGoogle Scholar

urn-nbn

Altmetric

urn-nbn
Totalt: 58 treff
RefereraExporteraLink to record
Permanent link

Direct link
Referera
Referensformat
  • apa
  • ieee
  • modern-language-association-8th-edition
  • vancouver
  • Annet format
Fler format
Språk
  • de-DE
  • en-GB
  • en-US
  • fi-FI
  • nn-NO
  • nn-NB
  • sv-SE
  • Annet språk
Fler språk
Utmatningsformat
  • html
  • text
  • asciidoc
  • rtf