[6月21日]Vascular Occlusions: Development and Formation Mechanism
时间：2013-06-17来源：苏州大学药学院本科教学网点击：0
报告题目：Vascular Occlusions: Development and Formation Mechanism
报 告 人：孙强 博士（Associate Professor, Department of Biology, University of Wisconsin, Stevens Point, USA）
报告时间：2013年6月21日（星期五）9:30
报告地点：独墅湖校区二期云轩楼2301室
孙强博士简介
EDUCATION
Ph.D., Plant Structure and Evolution, Tohoku University (Japan), 2001
M.S., Plant Anatomy, Xiamen University (China), 1990
B.S., Botany, Xiamen University (China), 1987
WORKING EXPERIENCE
08/ 2012 – present Associate Professor, Department of Biology, UWSP, USA
08/ 2007 – 08/2012 Assistant Professor, Department of Biology, UWSP, USA
05/2004 – 08/2007 Postdoctoral Researcher, Departments of Viticulture & Enology, Plant Sciences, and Plant Biology, University of California, Davis. USA
04/2001 – 05/2004 Research Scientist, Photodynamics Research Center, The Institute of Physical and Chemical Research (RIKEN), Japan
12/1992 – 10/1997 Lecturer, Department of Biology, Xiamen University, China
08/1990 – 12/1992 Assistant, Department of Biology, Xiamen University, China
2.Sun Q, Greve LC, Labavitch LM. 2011. Polysaccharide compositions of intervessel pit membranes contribute to Pierce’s disease resistance of grapevines. Plant Physiology 155:1976-1987.
3.Sun Q, Rost, TL, Matthews MA. 2008. Wound-induced vascular occlusions in grapevines (Vitis vinifera L.): tyloses in summer and gels in winter. American Journal of Botany 95: 1498-1505.
4.Sun Q, Rost TL, Reid MS, Matthews MA. 2007. Ethylene and not embolism is required for wound-induced tylose development in stems of grapevines (Vitis vinifera L.) Plant Physiology 145: 1629-1636. (Featured article)
报告摘要
Formation of vascular occlusions is a common structural phenomenon in the vessel system in a wide range of species in response to a variety of stress conditions. Vascular occlusions of plant origin include tyloses and gels etc. and are often induced by abiotic stresses (i.e., wounding, drought, flooding, freezing temperatures etc.) as well as biotic factors (i.e., senescence and pathogen infection). Their occurrence certainly makes the affected plants deviate from their normal performance, contributing to a reduced vigor and even ultimate death of the plants. In the past few years, the presenter has established a wound-induced vascular occlusion system with grapevine to study some fundamental issues of vascular occlusion formation. This talk will summarize our results on wound-induced vascular occlusions from the following aspect: development and structural features, spatial distribution and temporal progression. Also covered are our findings on the seasonal variations in wound-induced vascular occlusion types/extents in grapevines and a new hypothesis we proposed in terms of vascular occlusion formation mechanism, which is a long term concern in plant stress physiology. Our more recent results on functional roles of vascular occlusions in plant disease resistance/susceptibility might also be introduced according to the time availability. With these, our main goal is to better understand physiological functions and/or adaptations of plants under stress conditions.
