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Uptake of graphene enhanced the photophosphorylation performed by chloroplasts in rice plants

Nano Research 2020年第12期13卷 3198-3205页

作者： Kun Lu Danlei Shen Shipeng Dong Chunying Chen Sijie Lin Shan Lu Baoshan Xing Liang Mao State Key Laboratory of Pollution Control and Resource Reuse School of the EnvironmentNanjing UniversityNanjing210093China CAS Key Laboratory for Biomedical Effects of Nanomaterials and Nanosafety and CAS Center for Excellence in Nanoscience National Center for Nanoscience and TechnologyBeijing100190China College Environmental Science&Engineering State Key Laboratory of Pollution Control and Resource ReuseTongji UniversityShanghai200092China State Key Laboratory of Pharmaceutical Biotechnology School of Life SciencesNanjing UniversityNanjing210023China Stockbridge School of Agriculture University of MassachusettsAmherstMA01003USA

New and enhanced functions were potentially imparted to the plant organelles after interaction with *** this study,we found that∼44%and∼29%of the accumulated graphene in the rice leaves passively transported to the chloroplasts and thylakoid,respectively,significantly enhanced the fluorescence intensity of chloroplasts,and promoted about 2.4 times higher adenosine triphosphate production than that of *** enhancement of graphene on the photophosphorylation was ascribed to two reasons:One is that graphene facilitates the electron transfer process of photosystem II in thylakoid,and the other is that graphene protects the photosystem II against photo-bleaching by acting as a scavenger of reactive oxygen ***,our work here confirmed that graphene translocating in the thylakoid promoted the photosynthetic activity of chloroplast in vivo and in vitro,providing new opportunities for designing biomimetic materials to enhance the solar energy conversion systems,especially for repairing or increasing the photosynthesis activity of the plants grown under stress environment.

关键词： graphene photophosphorylation enhancement photosystem II ROS scavenging protection

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