The Effect of Carbon Nanomaterials on Senescence of Cut Flowers in Carnation (Dianthus caryophyllus L.)
文献类型： 外文期刊
作者： Zhang, Di 1 ; Chen, Xiaotong 1 ; Sheng, Jiangyuan 1 ; Zhang, Yafei 1 ; Shen, Xiaohui 1 ; Ren, Li 1 ;
作者机构： 1.Shanghai Jiao Tong Univ, Sch Design, Dept Landscape Sci & Engn, Shanghai 200240, Peoples R China
2.Shanghai Jiao Tong Univ, Minist Educ, Key Lab Thin Film & Microfabricat Technol, Shanghai 200240, Peoples R China
3.Shanghai Acad Agr Sci, Inst Agrifood Stand & Testing Technol, Shanghai 201403, Peoples R China
关键词： antioxidant system; fullerene; graphene quantum dots; reactive oxygen species; vase life
期刊名称：HORTICULTURAL SCIENCE & TECHNOLOGY （ 影响因子：0.869； 五年影响因子：0.912 ）
ISSN： 1226-8763
年卷期： 2021 年 39 卷 3 期
页码：
收录情况： SCI
摘要： Carbon nanomaterials (CNMs) have remarkable chemical, physical, electrical, and structural properties and favorable biocompatibility. This study used carnation (Dianthus caryophyllus L.) cut flowers as a model to evaluate the protective effects of 3 kinds of CNMs (single-walled carbon nanotubes [SWCNT], graphene quantum dots [GQD], and fullerenes [C-60]) on the antioxidant activity and senescence of plant cells. We found that 1 mg.L-1 C-60 and 25 mg.L-1 GQD extended the vase life (VL) of carnation by approximately 10%. SWCNT cannot be absorbed and transported by plant vascular tissue, and higher concentrations of SWCNT can block vascular tissue, leading to decreased VL. Physiological tests have shown that theThe malondialdehyde (MDA) and hydroxyl radical (OH center dot) levels significantly decreased after the GQD and C-60 treatments, and the main factors that cause cell damage changed from H2O2 to OH center dot. The in vitro Fenton reaction and 2,2-diphenyl-1-picrylhydrazyl (DPPH) free radical scavenging assay indicated that both C-60 and GQD may inhibit OH center dot generation by approximately 10% to 15%, and GQD had higher DPPH free radical scavenging activity. Accordingly, a suitable concentration of C-60 and GQD can influence reactive oxygen species metabolism and downstream biological events, including the cell redox state, the antioxidant system, and membrane lipid peroxidation, effectively delaying senescence and abscission of plant tissue.
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