主讲人：Staffan Persson

主讲人简介：报告人的研究重点为植物纤维素合成及调控。曾主持多项大型科研课题及科研框架计划，曾担任2项欧盟重大研究项目首席科学家。在《Cell》、《Science》、《Nature Plants》、《Developmental Cell》和《PNAS》等顶级学术期刊发表超过100篇的高水平学术论文。 2016和2017年连续两次被SCI评为全球高被引学者。讲授“细胞生物学”、“植物生物学”等本科及研究生课程，参与了墨尔本大学本科生课程大纲的制定。课题组和全球多个植物科学领域顶级实验室有广泛的国际合作。在2016年筹建了墨尔本大学-马普植物生理所联合博士生培养项目。由于卓越学术建树和其他方面优秀的表现，本人被授予2017年度墨尔本大学“院长荣誉奖”。

报告时间：2018年10月15日（星期一）下午1点

报告地点：生物药学楼800号会议室（树华多功能厅）

联系人：张大兵，34205073， zhangdb@sjtu.edu.cn

主办单位：生命科学技术学院

讲座中文简介：

The actin cytoskeleton is essential for organisms to grow and develop as it supports cell shape, motility and division. In plant cells, the actin cytoskeleton is important for distribution of organelles, pattering of cell wall polymers, and drives cytoplasmic streaming. To better understand the actin cytoskeleton, it is important to quantify its features. However, such framework has remained difficult to implement and the system-level properties of actin-based cellular trafficking therefore remain largely unknown. We have developed an automated image-based, network-driven framework to accurately segment and quantify actin cytoskeletal structures and organelle transport. We could show that the actin cytoskeleton in both growing and elongated hypocotyl plant cells has structural properties facilitating efficient transport. We utilized this framework to explore actin features during cotton fiber growth and to quantify changes in the actin cytoskeleton that supports stem gravitropism in rice. Thus, our framework provides quantitative assessments of the actin cytoskeleton to investigate its properties in living cells. Notably, this framework can be used to estimate cytoskeletal organization and transport in all types of organisms.