Umeå University's logo

umu.sePublications
Change search
Refine search result
1 - 2 of 2
CiteExportLink to result list
Permanent link
Cite
Citation style
  • apa
  • ieee
  • modern-language-association-8th-edition
  • vancouver
  • Other style
More styles
Language
  • de-DE
  • en-GB
  • en-US
  • fi-FI
  • nn-NO
  • nn-NB
  • sv-SE
  • Other locale
More languages
Output format
  • html
  • text
  • asciidoc
  • rtf
Rows per page
  • 5
  • 10
  • 20
  • 50
  • 100
  • 250
Sort
  • Standard (Relevance)
  • Author A-Ö
  • Author Ö-A
  • Title A-Ö
  • Title Ö-A
  • Publication type A-Ö
  • Publication type Ö-A
  • Issued (Oldest first)
  • Issued (Newest first)
  • Created (Oldest first)
  • Created (Newest first)
  • Last updated (Oldest first)
  • Last updated (Newest first)
  • Disputation date (earliest first)
  • Disputation date (latest first)
  • Standard (Relevance)
  • Author A-Ö
  • Author Ö-A
  • Title A-Ö
  • Title Ö-A
  • Publication type A-Ö
  • Publication type Ö-A
  • Issued (Oldest first)
  • Issued (Newest first)
  • Created (Oldest first)
  • Created (Newest first)
  • Last updated (Oldest first)
  • Last updated (Newest first)
  • Disputation date (earliest first)
  • Disputation date (latest first)
Select
The maximal number of hits you can export is 250. When you want to export more records please use the Create feeds function.
  • 1. Gamm, Magdalena
    et al.
    Peviani, Alessia
    Honsel, Anne
    Umeå University, Faculty of Science and Technology, Department of Plant Physiology. Umeå University, Faculty of Science and Technology, Umeå Plant Science Centre (UPSC).
    Snel, Berend
    Smeekens, Sjef
    Hanson, Johannes
    Umeå University, Faculty of Science and Technology, Department of Plant Physiology. Umeå University, Faculty of Science and Technology, Umeå Plant Science Centre (UPSC).
    Increased sucrose levels mediate selective mRNA translation in Arabidopsis2014In: BMC Plant Biology, E-ISSN 1471-2229, Vol. 14, article id 306Article in journal (Refereed)
    Abstract [en]

    Background: Protein synthesis is a highly energy demanding process and is regulated according to cellular energy levels. Light and sugar availability affect mRNA translation in plant cells but the specific roles of these factors remain unclear. In this study, sucrose was applied to Arabidopsis seedlings kept in the light or in the dark, in order to distinguish sucrose and light effects on transcription and translation. These were studied using microarray analysis of steady-state mRNA and mRNA bound to translating ribosomes. Results: Steady-state mRNA levels were affected differently by sucrose in the light and in the dark but general translation increased to a similar extent in both conditions. For a majority of the transcripts changes of the transcript levels were followed by changes in polysomal mRNA levels. However, for 243 mRNAs, a change in polysomal occupancy (defined as polysomal levels related to steady-state levels of the mRNA) was observed after sucrose treatment in the light, but not in the dark condition. Many of these mRNAs are annotated as encoding ribosomal proteins, supporting specific translational regulation of this group of transcripts. Unexpectedly, the numbers of ribosomes bound to each mRNA decreased for mRNAs with increased polysomal occupancy. Conclusions: Our results suggest that sucrose regulate translation of these 243 mRNAs specifically in the light, through a novel regulatory mechanism. Our data shows that increased polysomal occupancy is not necessarily leading to more ribosomes per transcript, suggesting a mechanism of translational induction not solely dependent on increased translation initiation rates.

    Download full text (pdf)
    fulltext
  • 2.
    Kruse, Jörg
    et al.
    Institut für Forstbotanik und Baumphysiologie, Universität Freiburg, Georges-Koehler-Allee 53/54, 79110 Freiburg, Germany.
    Gao, Peng
    Institut für Forstbotanik und Baumphysiologie, Universität Freiburg, Georges-Koehler-Allee 53/54, 79110 Freiburg, Germany.
    Honsel, Anne
    Umeå University, Faculty of Science and Technology, Department of Plant Physiology. Umeå University, Faculty of Science and Technology, Umeå Plant Science Centre (UPSC). Institut für Forstbotanik und Baumphysiologie, Universität Freiburg, Georges-Koehler-Allee 53/54, 79110 Freiburg, Germany.
    Kreuzwieser, Jürgen
    Institut für Forstbotanik und Baumphysiologie, Universität Freiburg, Georges-Koehler-Allee 53/54, 79110 Freiburg, Germany.
    Burzlaff, Tim
    Forstzoologisches Institut, Universität Freiburg, Tennenbacher Strasse 4, 79085 Freiburg, Germany.
    Alfarraj, Saleh
    Zoology Department, College of Science, King Saud University, Riyadh, 11451, Saudi Arabia.
    Hedrich, Rainer
    Institute for Molecular Plant Physiology and Biophysics, University Wuerzburg, 97070 Wuerzburg, Germany.
    Rennenberg, Heinz
    Institut für Forstbotanik und Baumphysiologie, Universität Freiburg, Georges-Koehler-Allee 53/54, 79110 Freiburg, Germany.
    Strategy of nitrogen acquisition and utilization by carnivorous Dionaea muscipula2014In: Oecologia, ISSN 0029-8549, E-ISSN 1432-1939, Vol. 174, no 3, p. 839-851Article in journal (Refereed)
    Abstract [en]

    Plant carnivory represents an exceptional means to acquire N. Snap traps of Dionaea muscipula serve two functions, and provide both N and photosynthate. Using 13C/15N-labelled insect powder, we performed feeding experiments with Dionaea plants that differed in physiological state and N status (spring vs. autumn plants). We measured the effects of 15N uptake on light-saturated photosynthesis (Amax), dark respiration (RD) and growth. Depending on N status, insect capture briefly altered the dynamics of RD/Amax, reflecting high energy demand during insect digestion and nutrient uptake, followed by enhanced photosynthesis and growth. Organic N acquired from insect prey was immediately redistributed, in order to support swift renewal of traps and thereby enhance probability of prey capture. Respiratory costs associated with permanent maintenance of the photosynthetic machinery were thereby minimized. Dionaea's strategy of N utilization is commensurate with the random capture of large prey, occasionally transferring a high load of organic nutrients to the plant. Our results suggest that physiological adaptations to unpredictable resource availability are essential for Dionaea's success with regards to a carnivorous life style.

1 - 2 of 2
CiteExportLink to result list
Permanent link
Cite
Citation style
  • apa
  • ieee
  • modern-language-association-8th-edition
  • vancouver
  • Other style
More styles
Language
  • de-DE
  • en-GB
  • en-US
  • fi-FI
  • nn-NO
  • nn-NB
  • sv-SE
  • Other locale
More languages
Output format
  • html
  • text
  • asciidoc
  • rtf