May 2025
Mon. 5 May, 2025
UPSC Monday Seminar 2025
Mon. 5 May, 2025 9:30 - 10:00
9:30 Shruti Choudhary
Title: Sneak peek into transcriptional responses to nitrate with time in developing xylem of hybrid aspen
Supervisor: Hannele Tuominen
Place: Lilla hörsalen KB.E3.01
Time: 9:30-10:00
Contact: Thomas Dobrenel, Anne Honsel
Tue. 6 May, 2025
Docent lecture Peter Marhavy
Tue. 6 May, 2025 11:00 - 12:30
Docent lecture
11:00: Peter Marhavý (biology)
Title: How Plants Roots Sense and Respond to Damage
Please find more information on the SLU homepage:
https://www.slu.se/en/ew-calendar/2025/5/docent-lectures-s-faculty/
Summary:
https://www.slu.se/globalassets/mw/riktade/fakulteter/s/docentforelasningar/docent-lecture-peter-marhavy.pdf
The lectures are given in PO Bäckström's hall in Umeå with the opportunity to participate via Zoom (the link will be available soon here and on the SLU homepage).
Wed. 7 May, 2025
Docent lecture Peter Kindgren
Wed. 7 May, 2025 9:30 - 11:00
Docent lecture
09:30: Peter Kindgren (biology)
Title: How do plants use their DNA blueprint?
Please find more information on the SLU homepage:
https://www.slu.se/en/ew-calendar/2025/5/docent-lectures-s-faculty/
Summary:
https://www.slu.se/globalassets/mw/riktade/fakulteter/s/docentforelasningar/docent-lecture-peter-kindgren.pdf
The lectures are given in PO Bäckström's hall in Umeå with the opportunity to participate via Zoom (the link will be available soon here and on the SLU homepage).
Mon. 12 May, 2025
UPSC Monday Seminar 2025
Mon. 12 May, 2025 9:00 - 10:00
9:00 tba
Title: tba
Supervisor: tba
9:30 tba
Title: tba
Supervisor: tba
Place: Lilla hörsalen KB.E3.01
Time: 9:00-10:00
Contact: Thomas Dobrenel, Anne Honsel
Tue. 13 May, 2025
UPSC Seminar: Juan Alonso Serra
Tue. 13 May, 2025 9:00 - 10:00
UPSC Seminar
Juan Alonso Serra
Center of Excellence in Tree Biology, Faculty of Biological and Environmental Sciences University of Helsinki, Finland
Title: On growth and flow: hydraulic control of above ground meristems
Host: Ove Nilsson
UPSC Seminar: Mingyuan Zhu
Tue. 13 May, 2025 14:00 - 15:00
UPSC Seminar
Mingyuan Zhu
Postdoc Associate, Benfey Lab, Duke University, Durham, USA
Title: Single-cell insights into root adaptation to soil compaction
Host: Stéphanie Robert
Abstract
Soil compaction represents a major challenge to modern agriculture. One major problem caused by soil compaction is that it exerts water stress on roots as moisture release is reduced from the smaller soil pores. Despite its agronomic importance, how roots respond to compacted soil conditions at the cellular level remains unclear. Here, we pioneered the use of single-cell and spatial transcriptomics on rice roots grown in soils to delve into the cell-level mechanisms governing root responses to soil compaction. Through differential expression analysis comparing non-compacted and compacted soil-based single-cell transcriptomic data, we identified a significant up-regulation in the expression of genes responsible for water impermeable barrier formation in the outer root tissues (Exodermis). This gene up-regulation was induced by an enhanced biosynthesis of plant hormone, abscisic acid (ABA) and its release from the inner tissues (Phloem). The role of ABA in responses to soil compaction was further highlighted by the suppression of barrier formation in the exodermis in ABA-deficient rice mutants. In summary, our single cell resolution study revealed how root tissues coordinate to facilitate the retention of water in root tips during soil compaction stress.
Thu. 15 May, 2025
Seminar series "Outside of Academia": Working for AFRY
Thu. 15 May, 2025 10:30 - 12:00
Seminar series "Outside of Academia"
Title: Working for AFRY
Speaker: Greta Nilén
More details will come closer to the event
Contact:
For questions, please contact the organisers Laura Tünnermann (
Fri. 16 May, 2025
UPSC Seminar: Leonard Blaschek
Fri. 16 May, 2025 9:00 - 10:00
UPSC Seminar
Leonard Blaschek
Copenhagen Plant Science Center (CPSC), Department of Plant & Environmental Sciences, University of Copenhagen
Title: Redundancy and Specificity in Wood Formation
Host: Ove Nilsson
Mon. 19 May, 2025
UPSC Monday Seminar 2025
Mon. 19 May, 2025 9:00 - 10:00
9:00 tba
Title: tba
Supervisor: tba
9:30 Dhriti Singh
Title: Sweet shaping of Root System Architecture under water deficit
Supervisor: Johannes Hanson
Place: Lilla hörsalen KB.E3.01
Time: 9:00-10:00
Contact: Thomas Dobrenel, Anne Honsel
Thu. 22 May, 2025
UPSC Welcome Meeting for Newcomers_May 2025
Thu. 22 May, 2025 13:00 - 14:00
Are you new at UPSC?
We invite every newcomer at UPSC to participate in the Welcome Meeting. This meeting will be held twice per semester, four times per year and gives you important information about UPSC, how it is organised, who are your contact persons and will help you to find your way around at UPSC.
Please make sure to attend at least one meeting after your arrival at UPSC. We will serve fika for everyone participating.
We are looking forward to meeting you!
Johannes Hanson (Head of Department, UMU), Totte Niittylä (Head of Department, SLU), Ove Nilsson (Director of UPSC)
Fri. 23 May, 2025
UPSC Cutting-Edge Seminar: Katharina Markmann
Fri. 23 May, 2025 10:00 - 11:00
Katharina Markmann
University of Würzburg, Germany
Title: Systemic control of and root architecture and symbiotic competence through mobile miRNAs
Host: Stephan Wenkel
Abstract:
Authors: Daniela Tsikou, Zhe Yan, Moritz Sexauer, Hemal Bhasin & Katharina Markmann
Legumes balance symbiotic interactions with nitrogen-fixing rhizobial bacteria via a systemic feedback system tightly controlling rates of bacterial infection and nodulation events. This host regulatory system, termed autoregulation of nodulation (AON), prevents nutritional misbalances and is key to maintaining the association at a mutualistic state. We identified a riboregulator, the micro RNA miR2111, that undergoes shoot-to-root translocation to control infection (1) through specific post-transcriptional regulation of the Kelch-repeat F-box gene TOO MUCH LOVE (TML), a root-acting repressor of infection and nodulation (2). Our results reveal miR2111 as a key systemic activator of symbiosis that maintains a susceptible default status in noninfected hosts. The regulon miR2111-TML is conserved across dicot land plant lineages, including the asymbiotic ruderal Arabidopsis thaliana. Plants adapt their root system architecure to soil nitrogen availability in a process called foraging. Our data suggest that apart from its role in symbiosis control, miR2111 acts as a mobile shoot signal translocating to the root in a nitrogen homeostasis-dependent manner to control lateral root formation (3). Comparative investigations in the model legume Lotus japonicus and Arabidopsis thaliana identify this regulon as an essential, evolutionarily stable factor in shoot dependent adaptation of root organ formation in response to nitrate availability in plants of divergent lifestyles (3).
(1) Tsikou et al. (2018) Science 362: 233-236
(2) Takahara et al. (2013) Plant & Cell Physiology 54: 433-447
(3) Sexauer et al. (2023) Nature Communications 14: 8083
Mon. 26 May, 2025
UPSC Monday Seminar 2025
Mon. 26 May, 2025 9:00 - 10:00
9:00 tba
Title: tba
Supervisor: tba
9:30 tba
Title: tba
Supervisor: tba
Place: Lilla hörsalen KB.E3.01
Time: 9:00-10:00
Contact: Thomas Dobrenel, Anne Honsel
Tue. 27 May, 2025
Master thesis presentations: 2025 day1
Tue. 27 May, 2025 8:30 - 12:00
Master thesis presentation 2025
08:30 tba
Title: tba
Supervisor team: tba
11:00 tba
Title: tba
Supervisor team: tba
Location: Lilla Hörsalen
Wed. 28 May, 2025
Master thesis presentations: 2025 day2
Wed. 28 May, 2025 9:30 - 11:30
Master thesis presentation 2025
10:00 Franziska Brunozzi
Title: tba
Supervisor team: tba
11:00 Johan Samuelsson
Title: tba
Supervisor team: tba
Location: KB.F3.01 Stora Fokusrummet