title: Fullerene-induced increase of glycosyl residue on living plant cell wall.
abstract: In this work, we have investigated the change of cell wall for the tobacco plant cell (Nicotiana tobacum L. cv. Bright Yellow) under the repression of water-soluble carboxyfullerenes (C70(C(COOH)2)(2-4)). The adsorption of C70(C(COOH)2)(2-4) on cell wall led to the disruption of cell wall and membrane, and consequently, cell growth inhibition. Results from atomic force microscopy (AFM) force measurement and confocal imaging revealed an increase of the glycosyl residue on the cell wall of carboxyfullerene-treated cells, with a time- and dose-dependent manner, and accompanied by the elevated reactive oxygen species (ROS). Moreover, the stimulation-sensitive alteration of glycosyl residue and ROS was demonstrated, which suggested a possible protection strategy for the plant cells under fullerene repression. This study provides the first direct evidence on the change of plant cell wall composition under the repression of fullerene and is the first successful application of AFM ligand-receptor binding force measurement to the living plant cell. The new information present here would help to a better understanding and assessment of the biological effect of fullerenes on plant.
authors.affiliation: Beijing National Laboratory for Molecular Sciences, Institute of Chemistry, Chinese Academy of Sciences, Beijing 100190, China.
authors.forename: Qiaoling
authors.initials: Q
authors.lastname: Liu
authors.forename: Xuejie
authors.initials: X
authors.lastname: Zhang
authors.forename: Yuanyuan
authors.initials: Y
authors.lastname: Zhao
authors.forename: Jinxing
authors.initials: J
authors.lastname: Lin
authors.forename: Chunying
authors.initials: C
authors.lastname: Shu
authors.forename: Chunru
authors.initials: C
authors.lastname: Wang
authors.forename: Xiaohong
authors.initials: X
authors.lastname: Fang
mesh_terms: D000117:Acetylglucosamine / Q000378:metabolism; D000327:Adsorption; D002264:Carboxylic Acids / Q000737:chemistry / Q000494:pharmacology*; D002460:Cell Line; D002462:Cell Membrane / Q000187:drug effects / Q000502:physiology; D049109:Cell Proliferation / Q000187:drug effects; D002473:Cell Wall / Q000187:drug effects* / Q000378:metabolism / Q000648:ultrastructure; D037741:Fullerenes / Q000737:chemistry / Q000494:pharmacology*; D018625:Microscopy, Atomic Force; D046529:Microscopy, Electron, Transmission; D014026:Nicotiana / Q000166:cytology*
chemical_list: D002264:Carboxylic Acids; D037741:Fullerenes; D000117:Acetylglucosamine