Hur kan vi styra geners aktivitet i de vedbildande delarna av trädet utan att påverka övriga delar av trädets tillväxt negativt? Viktig applikation för framtida planteringar av bioteknikträd där cellulosan och andra vedegenskaper har modifierats.

This project aims to produce tools to practically implement biotechnology for major wood modification in forest plantations and generate knowledge for modifying cellulose in wood. Practical biotechnology in forest plantation may focus on modifying wood to decrease energy required for wood pre-treatments, decrease wood recalcitrance, avoid inhomogeneous wood by removing G-layers in tension wood, and drastically alter wood polymer composition for specific uses. An unsolved practical problem with this approach is that large modification has aberrant effects on tree survival. The research aims to identify, evaluate and practically test promoters that can be used for major modifications of wood while still maintaining a healthy tree. We aim to shed more light on the machinery of cellulose biosynthesis, with the idea to produce highly modified wood. This will require specific promoters since evaluating the function of key proteins will otherwise be lethal. Chemistry, fibre mechanics and wood processing properties will be assessed. This approach could highly affect recalcitrance and the mechanical properties (thus the energy required for wood pre-treatment).

Host Company: Stora Enso Skog

PhD student: Christoffer Johnsson
Supervisors: Urs Fischer (Main supervisor),
Björn Sundberg (Industry supervisor)