2:40 PM
() Chair's Introduction. (Abstract )

2:50 PM
(S4B-1) Plant sugar sensing and signaling networks. (Abstract 76)
Jen Sheen^*,1, ¹ Massachusetts General Hospital, Boston, MA, USA

3:20 PM
(S4B-2) Trehalose-6-phosphate in Arabidopsis. (Abstract 77)
Henriette Schluepmann^*,1, Anja van Dijken¹, Till Pelny², Mahnaz Aghdasi¹, Matthew Paul², Sjef Smeekens¹, ¹ Molecular Plant Physiology, Utrecht University, Utrecht, The Netherlands² Crop Performance and Improvement, IACR-Rothamstead, Harpenden, Herts, United Kingdom

3:40 PM
(S4B-3) Sugar signalling and its interaction with thioredoxin-mediated light activation of ADP-glucose pyrophosphorylase in leaves. (Abstract 78)
Anna Kolbe^*,1, Axel Tiessen¹, Henriette Schluepmann³, Peter Geigenberger¹, ¹ Max-Planck-Institute of Molecular Plant Physiologie, Potsdam, Germany³ Utrecht University, Utrecht, Netherlands

4:00 PM
(S4B-4) The differences between sink and source leaves in carbohydrate repression of photosynthesis. (Abstract 79)
Takao Araya^*,1, Ko Noguchi, Ichiro Terashima, ¹ Department of biology, Graduate School of Science, Osaka university, 1-1 Machikaneyama-cho, Toyonaka, Osaka, Japan

4:20 PM
(S4B-5) Comparison of transcript profiles following short term exposure of Arabidopsis to elevated CO₂ or glucose. (Abstract 80)
Sylva Donaldson^*,1, John Coleman¹, ¹ Department of Botany/University of Toronto, Toronto, Ontario, Canada