UPSC Cutting Edge Seminar

Speaker:
Phil Wigge
Sainsbury Laboratory, Cambridge University UK

Title: Ambient Temperature Sensing in Plants

Abstract:
How is temperature sensed? Eukaryotic cells respond within minutes to changes of a few degrees celsius, adjusting the expression of thousands of genes. The cell must therefore have a mechanism for sensing temperature and coordinating the transcriptome. Despite a few examples of thermosensors, e.g. in Listeria and neurons, the pathways by which temperature is sensed globally are not known.

To address this, we have carried out a genetic screen in Arabidopsis using a Luciferase reporter line for mutants that incorrectly sense non-stress temperature changes. This approach has enabled us to identify a novel temperature-sensing pathway that appears to be conserved among eukaryotes and accounts for the majority of the transcriptional changes in response to temperature change. We are now collaborating with other labs to more fully understand the molecular basis of temperature perception.

What is the underlying regulatory logic of the flora transition? While much is known of the genetic architecture of the floral transition, the dynamic properties of the floral switch are not clearly understood. To address this, we are collaborating with the Richard Morris group (JIC, Norwich) to model the regulatory architecture of the floral transition. This modelling has given insights into how the dynamics of flowering are regulated both spatially and temporally. Our model makes a number of testable, predictions about the dynamic regulation of the floral transition.

Place: Lilla hörsalen, KB3A9, KBC

Seminar

Stefania Giacomello
Applied Genomics Institute
Udine, Italy

Title:
De novo assembly and comparative genomics analysis in the Populus genus


Room: KBF 30

More information and link to registration form will appear here soon.

More information and link to registration form will appear here soon.

UPSC Seminar Series


Speaker:
Kathryn Robinson

Title: Natural variation in aspen and defence against herbivores

Place: Lilla hörsalen, KB3A9, KBC

UPSC Seminar

Speaker:
Prof. Ryo Funada
Faculty of Agriculture, Tokyo University of
Agriculture and Technology, Fuchu-Tokyo, Japan

Title:
Cellular biology of wood formation in relation to environmental changes

Place: KB3A9 “Lilla hörsalen”, KBC

 

UPSC Seminar Series


Speaker:
Camila Cambui

Title: The importance of amino acids for plant nutrition

Place: Lilla hörsalen, KB3A9, KBC

UPSC Seminar Series
Half-time Seminar

Speaker:
Edward Businge

Title: The regulation of embryo development in conifers

Place: Lilla hörsalen, KB3A9, KBC

Seminar

Speaker:
Martin Hagemann
Universität Rostock, Institut für Biowissenschaften, Abteilung Pflanzenphysiologie

Title
Evolutionary origin of photorespiration: Phylogenetic and biochemical studies of enzymes involved in the 2-phosphoglycolate metabolism

Place: Lilla hörsalen, KB3A9

Abtract:The photorespiratory pathway is essential for organisms performing oxygenic photosynthesis, cyanobacteria, algae and plants, in the present day O₂-containing atmosphere. The presence of a plant-like 2-phosphoglycolate cycle in cyanobacteria indicated that not only genes of oxygenic photosynthesis but also genes encoding photorespiratory enzymes were endosymbiotically conveyed from ancient cyanobacteria to eukaryotic oxygenic phototrophs. BlastP analyses with plant photorespiratory proteins identified several proteins in cyanobacteria and algae with surprisingly high sequence similarities. To verify that not only the sequence but also the biochemical activity of these enzymes is conserved, selected proteins from the cyanobacteria Synechocystis PCC 6803, Anabaena PCC 7120 and Cyanothece sp. PCC 7822, as well as from the algae Chlamydomonas reinhardtii and Cyanidioschyzon merolae were overexpressed in E. coli and biochemical analyzed. As examples, data will be presented on our recent analyses of glycolate oxidases and hydroxypyruvate reductase, which allowed to date the origin of photorespiration back to the protoalgae

Thesis Defence - Tania Tibiletti - Department of Chemistry

Title: Functional studies on the Light-harvesting-Like (LiL) proteins in Cyanobacteria and Cryptophytes

Opponent: Prof. Dr. Martin Hagemann, University of Rostock, Plant Physiology, Germany.

Supervisor: Christiane Funk

Lilla hörsalen , KB3A9

UPSC Seminar Series
Seminar

Speaker:
Jakob Prestele

Title: Studies on cell death regulation in Arabidopsis and spruce

Place: Lilla hörsalen, KB3A9, KBC

Seminar
Speaker:
Markus Schmid
Max Planck Institute for Developmental Biology Tübingen, Germany

Title
Integration of Flowering Time Signals by FT

Place: Lilla hörsalen, KB3A9

Presentation of Master Thesis
Master in Plant and Forest Biotechnology

Speaker:
Arun Devadas

Title:
Characterization of fungal strains for bioethanol production and sugar utilization


Place: KB2C5

Supervisor: Anita Sellstedt