PSC Frontier Seminar series
Title: How to pattern a wall：direct visualization of primary to secondary wall synthesis
Speaker: Prof. Staffan Persson, ARC Future Fellow, Professor of Plant Cell Biology, School of Biosciences, University of Melbourne, Australia
Time: 10:00 am
Day/Date: October 9th, 2019 (Wednesday)
Host: Prof. Chunzhao Zhao
Venue: PSC Auditorium
Land plants emerged around 500 million years ago. The transition between the aquatic and terrestrial growth environments necessitated new ways to provide the aboveground tissues with water. Plants therefore developed xylem vessels that are efficient solute-transporting tubes in the plant vasculature. The functions of the xylem vessels are supported by strong cell walls. While these walls are referred to as secondary walls, primary walls are thin and flexible walls that surround every plant cell and underpin cell morphology. Hence, the transition between primary and secondary wall synthesis is an important field to understand how plants colonized land. We use an inducible system for secondary wall production to directly visualize this transition. The main component of both primary and secondary walls is cellulose. However, two different types of cellulose synthase complexes contribute to cellulose production in the different wall types. In addition, the synthesis is directed through the coordination between the cellulose synthase complexes and the underlying microtubule array. In this talk, I will outline how we can visualize changes in microtubule patterns, and the change between different cellulose synthase complexes, during primary to secondary wall synthesis in single cells. We are using this system in combination with computational tools to better understand this process and to provide means to change the primary to secondary wall transition.
The seminar will be delivered in English.