oru.sePublikasjoner
Endre søk
Begrens søket
1 - 7 of 7
RefereraExporteraLink til resultatlisten
Permanent 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
Treff pr side
  • 5
  • 10
  • 20
  • 50
  • 100
  • 250
Sortering
  • Standard (Relevans)
  • Forfatter A-Ø
  • Forfatter Ø-A
  • Tittel A-Ø
  • Tittel Ø-A
  • Type publikasjon A-Ø
  • Type publikasjon Ø-A
  • Eldste først
  • Nyeste først
  • Skapad (Eldste først)
  • Skapad (Nyeste først)
  • Senast uppdaterad (Eldste først)
  • Senast uppdaterad (Nyeste først)
  • Disputationsdatum (tidligste først)
  • Disputationsdatum (siste først)
  • Standard (Relevans)
  • Forfatter A-Ø
  • Forfatter Ø-A
  • Tittel A-Ø
  • Tittel Ø-A
  • Type publikasjon A-Ø
  • Type publikasjon Ø-A
  • Eldste først
  • Nyeste først
  • Skapad (Eldste først)
  • Skapad (Nyeste først)
  • Senast uppdaterad (Eldste først)
  • Senast uppdaterad (Nyeste først)
  • Disputationsdatum (tidligste først)
  • Disputationsdatum (siste først)
Merk
Maxantalet träffar du kan exportera från sökgränssnittet är 250. Vid större uttag använd dig av utsökningar.
  • 1.
    Jansen, Marcel A. K.
    et al.
    School of Biological Earth and Environmental Sciences, University College Cork, Cork, Ireland; Global Change Research Institute CAS, Brno, Czech Republic.
    Bilger, Wolfgang
    Botanisches Institut, Christian-Albrechts-Universität zu Kiel, Kiel, Germany.
    Hideg, Éva
    Institute of Biology, University of Pécs, Pécs, Hungary.
    Strid, Åke
    Örebro universitet, Institutionen för naturvetenskap och teknik.
    Urban, Otmar
    Global Change Research Institute CAS, Brno, Czech Republic.
    Interactive effects of UV-B radiation in a complex environment2019Inngår i: Plant physiology and biochemistry (Paris), ISSN 0981-9428, E-ISSN 1873-2690, Vol. 134, s. 1-8Artikkel i tidsskrift (Fagfellevurdert)
  • 2.
    Li, Shaoshan
    et al.
    Örebro universitet, Institutionen för naturvetenskap.
    Strid, Åke
    Örebro universitet, Institutionen för naturvetenskap.
    Anthocyanin accumulation and changes in CHS and PR-5 gene expression in Arabidopsis thaliana after removal of the inflorescence stem (decapitation)2005Inngår i: Plant physiology and biochemistry (Paris), ISSN 0981-9428, E-ISSN 1873-2690, Vol. 43, nr 6, s. 521-525Artikkel i tidsskrift (Fagfellevurdert)
    Abstract [en]

    Anthocyanin accumulation occurs in rosette leaves of Arabidopsis thaliana within 8 days after removal of the inflorescence stem. Expression of stress-induced genes CHS and PR-5 was strongly up-regulated by stem removal, and was highest on day 4 after decapitation. These levels were 10 and 5 times higher than in the control, respectively. No obvious difference was found in expression of LHCB, MEB5.2, or PYROA genes following stem removal. We demonstrate that removing the inflorescence stem triggers events in Arabidopsis, including pigment accumulation and changes in gene expression of a subset of stress-induced genes, in a tissue distant from the wound site.

  • 3.
    Ristilä, Mikael
    et al.
    Örebro universitet, Institutionen för naturvetenskap.
    Strid, Hilja
    Örebro universitet, Hälsoakademin.
    Eriksson, Leif A.
    National University of Ireland, Galway, Ireland.
    Strid, Åke
    Örebro universitet, Institutionen för naturvetenskap.
    Sävenstrand, Helena
    Örebro universitet, Akademin för naturvetenskap och teknik.
    The role of the pyridoxine (vitamin B6) biosynthesis enzyme PDX1 in ultraviolet-B radiation responses in plants2011Inngår i: Plant physiology and biochemistry (Paris), ISSN 0981-9428, E-ISSN 1873-2690, Vol. 49, nr 3, s. 284-292Artikkel i tidsskrift (Fagfellevurdert)
    Abstract [en]

    Ultraviolet-B radiation regulates plant growth and morphology at low and ambient fluence rates but can severely impact on plants at higher doses. Some plant UV-B responses are related to the formation of reactive oxygen species (ROS) and pyridoxine (vitamin B6) has been reported to be a quencher of ROS. UV-B irradiation of Arabidopsis Col-0 plants resulted in increased levels of PDX1 protein, compared with UV-A-exposed plants. This was shown by immunoblot analysis using specific polyclonal antibodies raised against the recombinant PDX1.3 protein and confirmed by mass spectrometry analysis of immunoprecipitated PDX1. The protein was located mainly in the cytosol but also to a small extent in the membrane fraction of plant leaves. Immunohistochemical analysis performed in pea revealed that PDX1 is present in UV-B-exposed leaf mesophyll and palisade parenchyma but not in epidermal cells. Pyridoxine production increased in Col-0 plants exposed to 3 days of UV-B, whereas in an Arabidopsis pdx1.3 mutant UV-B did not induce pyridoxine biosynthesis. In gene expression studies performed after UV-B exposure, the pdx1.3 mutant showed elevated transcript levels for the LHCB1*3 gene (encoding a chlorophyll a/b-binding protein of the photosystem II light-harvesting antenna complex) and the pathogenesis-related protein 5 (PR-5) gene, compared with wild type.

  • 4.
    Rodriguez-Calzada, Tania
    et al.
    Biosystems Engineering Group, School of Engineering, Autonomous University of Queretaro-Campus Amazcala, Querétaro, Mexico.
    Qian, Minjie
    Örebro universitet, Institutionen för naturvetenskap och teknik.
    Strid, Åke
    Örebro universitet, Institutionen för naturvetenskap och teknik.
    Neugart, Susanne
    Department of Quality, Leibniz Institute for Ornamental and Horticultural Crops, Großbeeren, Germany.
    Schreiner, Monika
    Department of Quality, Leibniz Institute for Ornamental and Horticultural Crops, Großbeeren, Germany.
    Torres-Pacheco, Ireno
    Biosystems Engineering Group, School of Engineering, Autonomous University of Queretaro-Campus Amazcala, Querétaro, Mexico.
    Guevara-Gonzales, Ramon
    Biosystems Engineering Group, School of Engineering, Autonomous University of Queretaro-Campus Amazcala, Querétaro, Mexico.
    Effect of UV-B radiation on morphology, phenolic compound production, gene expression, and subsequent drought stress responses in chili pepper (Capsicum annuum L.)2019Inngår i: Plant physiology and biochemistry (Paris), ISSN 0981-9428, E-ISSN 1873-2690, Vol. 134, s. 94-102Artikkel i tidsskrift (Fagfellevurdert)
    Abstract [en]

    It has been suggested that accumulation of flavonoids could be a key step in development of plant tolerance to different environmental stresses. Moreover, it has been recognized that abiotic stresses such as drought and UV-B radiation (280-315 nm) induce phenolic compound accumulation, suggesting a role for these compounds in drought tolerance. The aim of the present study was to evaluate the effect of UV-B exposure on chili pepper (Capsicum annuum, cv. ‘Coronel’) plant performance, phenolic compound production, and gene expression associated with response to subsequent drought stress. Additionally, the phenotypic response to drought stress of these plants was studied. UV-B induced a reduction both in stem length, stem dry weight and number of floral primordia. The largest reduction in these variables was observed when combining UV-B and drought. UV-B-treated well-watered plants displayed fructification approximately 1 week earlier than non-UV-B-treated controls. Flavonoids measured epidermally in leaves significantly increased during UV-B treatment. Specifically, UV-B radiation significantly increased chlorogenic acid and apigenin 8-C-hexoside levels in leaves and a synergistic increase of luteolin 6-C-pentoside-8-C-hexoside was obtained by UV-B and subsequent drought stress. Gene expression of phenylalanine ammonia lyase (PAL) and chalcone synthase (CHS) genes also increased during UV-B treatments. On the other hand, expression of genes related to an oxidative response, such as mitochondrial Mn-superoxide dismutase (Mn-SOD) and peroxidase (POD) was not induced by UV-B. Drought stress in UV-B-treated plants induced mitochondrial Mn-SOD gene expression. Taken together, the UV-B treatment did not induce significant tolerance in plants towards drought stress under the conditions used.

  • 5.
    Rozpadek, Piotr
    et al.
    Institute of Environmental Sciences, Jagiellonian University, Kraków, Poland; Institute of Plant Physiology, Polish Academy of Sciences, Kraków, Poland.
    Rapala-Kozik, Maria
    Department of Comparative Biochemistry and Bioanalytics, Faculty of Biochemistry, Biophysics and Biotechnology, Jagiellonian University, Kraków, Poland.
    Wezowicz, Katarzyna
    Institute of Environmental Sciences, Jagiellonian University, Kraków, Poland.
    Grandin, Anna
    Örebro universitet, Institutionen för naturvetenskap och teknik.
    Karlsson, Stefan
    Örebro universitet, Institutionen för naturvetenskap och teknik.
    Wazny, Rafal
    Malopolska Centre of Biotechnology, Jagiellonian University, Kraków, Poland.
    Anielska, Teresa
    Institute of Environmental Sciences, Jagiellonian University, Kraków, Poland.
    Turnau, Katarzyna
    Institute of Environmental Sciences, Jagiellonian University, Kraków, Poland; Malopolska Centre of Biotechnology, Jagiellonian University, Kraków, Poland.
    Arbuscular mycorrhiza improves yield and nutritional properties of onion (Allium cepa)2016Inngår i: Plant physiology and biochemistry (Paris), ISSN 0981-9428, E-ISSN 1873-2690, Vol. 107, s. 264-272Artikkel i tidsskrift (Fagfellevurdert)
    Abstract [en]

    Improving the nutritional value of commonly cultivated crops is one of the most pending problems for modern agriculture. In natural environments plants associate with a multitude of fungal microorganisms that improve plant fitness. The best described group are arbuscular mycorrhizal fungi (AMF). These fungi have been previously shown to improve the quality and yield of several common crops. In this study we tested the potential utilization of Rhizophagus irregularis in accelerating growth and increasing the content of important dietary phytochemicals in onion (Allium cepa). Our results clearly indicate that biomass production, the abundance of vitamin B1 and its analogs and organic acid concentration can be improved by inoculating the plant with AM fungi. We have shown that improved growth is accompanied with up-regulated electron transport in PSII and antioxidant enzyme activity.

  • 6.
    Sävenstrand, Helena
    et al.
    Örebro universitet, Institutionen för naturvetenskap.
    Brosché, Mikael
    Strid, Åke
    Örebro universitet, Institutionen för naturvetenskap.
    Ultraviolet-B signalling: Arabidopsis brassinosteroid mutants are defective in UV-B regulated defence gene expression2004Inngår i: Plant physiology and biochemistry (Paris), ISSN 0981-9428, E-ISSN 1873-2690, Vol. 42, nr 9, s. 687-694Artikkel i tidsskrift (Fagfellevurdert)
    Abstract [en]

    The involvement of brassinosteroids in signalling events in plants during UV-B stress (280-315 nm) was investigated in Arabidopsis thaliana. Brassinosteroids are involved in growth and development in plants and have also been shown to enhance stress tolerance. Three mutants deficient in the biosynthetic pathway of brassinolide (BL; det2, dim1 and cpd) and the BL insensitive mutant (bri1) were together with visible light irradiated with 3 or 9 h of UV-B radiation (biologically effective radiation normalised to 300 nm being 0.24 W m(-2)). Also, a small size control, irx1, and Columbia 0 (Col-0) wild-type plants were examined under identical conditions. Gene expression patterns were established for these mutants with a set of four molecular markers (the defence genes chalcone synthase (CHS), PYROA, pathogenesis-related protein PR-5, and a gene regulated by very low levels of UV-B, MEB5.2). Although the genes in the brassinodefective mutants were still induced by UV-B radiation, they all also showed reduced levels of mRNA transcripts compared with Col-0 and irx1. The bri1 and cpd were the mutants with lowest levels of molecular marker mRNA transcripts. The effects of impairment of brassinosteroid signalling also differed between the genes studied, indicating a need for a complete brassinosteroid pathway in UV-B signalling.

  • 7.
    Sävenstrand, Helena
    et al.
    Örebro universitet, Institutionen för naturvetenskap.
    Strid, Åke
    Örebro universitet, Institutionen för naturvetenskap.
    Six genes strongly regulated by mercury in Pisum sativum roots2004Inngår i: Plant physiology and biochemistry (Paris), ISSN 0981-9428, E-ISSN 1873-2690, Vol. 42, nr 2, s. 135-142Artikkel i tidsskrift (Fagfellevurdert)
    Abstract [en]

    Suppression subtractive hybridisation was used to isolate heavy metal-induced genes from Pisum sativum roots hydroponically exposed to 5 microM HgCl2 and 10 microM EDTA. Six genes were induced out of which one, PsHMIP6B, was novel. The other genes (PsSAMT, PsI2'H, PsNDA, PsAPSR, PsPOD) had not previously been isolated from pea and sequenced. All six genes were also induced after exposure to 5 microM HgCl2 in the absence of EDTA. The induction pattern was in some cases different for the two Hg species, demonstrating a quicker response to-free Hg2+ than Hg-EDTA. The stress-specificity of the gene regulation was investigated by hydroponically adding 5 microM Cd2+. Most Hg-induced cDNAs were also induced by Cd2+ but to a smaller extent than after Hg exposure. In addition, the gene expression was also probed for tissue specificity, which showed that all six genes were expressed in roots and not in leaves.

1 - 7 of 7
RefereraExporteraLink til resultatlisten
Permanent 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