Mapping Molecular Signatures in Plant Leaves, Flowers, and Fruits by a TiO2 Nanotube-Based Plasmonic Chip for Imprint Mass Spectrometry Imaging
文献类型： 外文期刊
作者： Chen, Dong 1 ; Xu, Yizhu 1 ; Huang, Yudi 1 ; Chen, Yingying 1 ; Zhao, Yuhui 1 ; Yan, Bin 3 ; Zhu, Xinhai 4 ; Chen, Zilong 4 ; Xu, Hanhong 1 ; Yin, Zhibin 5 ; Wu, Xinzhou 1 ;
作者机构： 1.South China Agr Univ, State Key Lab Conservat & Utilizat Subtrop Agrobio, Guangzhou 510642, Peoples R China
2.South China Agr Univ, Key Lab Nat Pesticide & Chem Biol, Minist Educ, Guangzhou 510642, Peoples R China
3.Natl Ctr Excellence Mass Spectrometry Imaging NiCE, Natl Phys Lab, Teddington TW11 0LW, England
4.Sun Yat sen Univ, Instrumental Anal & Res Ctr, Guangzhou 510275, Peoples R China
5.Guangdong Acad Agr Sci, Agrobiol Gene Res Ctr, Guangzhou 510640, Peoples R China
关键词： mass spectrometry imaging; imprinting imaging; SALDI; plasmonic TiO2 nanotube; plant leaves; flowers
期刊名称：ACS AGRICULTURAL SCIENCE & TECHNOLOGY （ 影响因子：2.5； 五年影响因子：2.5 ）
ISSN：
年卷期： 2023 年 3 卷 1 期
页码：
收录情况： SCI
摘要： Mapping molecular signatures within a fragile leaf or flower of medicinal plants with mass spectrometry imaging (MSI) techniques is crucial in plant biology yet remains a great challenge due to the inability to slice such samples. Herein, we constructed a composite substrate, hydrophobic polydopamine-modified TiO2 nanotube coated with plasmonic gold nanoparticle (AuNP-hPDA-TDNT) and exploited its potential as a surface-assisted laser desorption/ionization (SALDI) substrate for imprinting/stamping MSI analysis. With the integrated advantages of satisfactory imprinting/stamping capability and enhanced ion production, this AuNP-hPDA-TDNT substrate-based SALDI-MSI exhibits remarkable performance in mapping tissue-specific distribution patterns of functional metabolites in medicinal plant (i.e., Catharanthus roseus, Ginkgo biloba, and Jatropha integerrima) leaves/flowers and fruits (i.e., strawberry and cherry tomato) regardless of tedious sample preparation. Collectively, we believe that this functionalized TiO2 nanotube substrate will expand the scope of SALDI-MSI in plant science, providing more biologically relevant insights into the functions and mechanisms of plant systems.
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