Plants and Plumbing: A design guide to efficient water transportation
发布时间 :2018-06-04  阅读次数 :4938

报告题目:Plants and Plumbing: A design guide to efficient water transportation

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”。






In plants, plasma membrane-embedded CELLULOSE SYNTHASE (CESA) enzyme complexes deposit cellulose chains into the developing cell wall. Cellulose synthesis requires two different sets of CESA complexes that are active during cell expansion and secondary cell wall thickenings, respectively. Hence, developing xylem cells, which first undergo cell expansion and subsequently deposit thick secondary walls, need to completely reorganize their cellulose synthase complexes from primary- to secondary wall-specific CESAs. Using live-cell imaging, we have analyzed the principles underlying this remodeling. We can show model how microtubules re-arrange their array structure during transition between primary and secondary wall synthesis and how they switch form one type of CESA complex to another. Our data reveal distinct and dynamic subcellular trafficking patterns that underpin the remodeling of the cellulose biosynthetic machinery, resulting in the removal and degradation of the primary wall CESA complex, with concurrent production and recycling of the secondary wall CESAs.