Correlation Engine 2.0
Clear Search sequence regions

  • carbon nanotubes (2)
  • flavonoids (1)
  • glycol (1)
  • near (2)
  • polyphenol (10)
  • soybean (2)
  • spp (1)
  • tannins (1)
  • Sizes of these terms reflect their relevance to your search.

    Plants use secondary metabolites such as polyphenols for chemical defense against pathogens and herbivores. Despite their importance in plant pathogen interactions and tolerance to diseases, it remains challenging to detect polyphenols in complex plant tissues. Here, we create molecular sensors for plant polyphenol imaging that are based on near-infrared (NIR) fluorescent single-wall carbon nanotubes (SWCNTs). We identified polyethylene glycol-phospholipids that render (6,5)-SWCNTs sensitive (Kd =90 nM) to plant polyphenols (tannins, flavonoids, …), which red-shift (up to 20 nm) and quench their emission (ca. 1000 nm). These sensors report changes in total polyphenol level after herbivore or pathogen challenge in crop plant systems (Soybean Glycine max) and leaf tissue extracts (Tococa spp.). We furthermore demonstrate remote chemical imaging of pathogen-induced polyphenol release from roots of soybean seedlings over the time course of 24 h. This approach allows in situ visualization and understanding of the chemical plant defense in real time and paves the way for plant phenotyping for optimized polyphenol secretion. © 2021 The Authors. Angewandte Chemie International Edition published by Wiley-VCH GmbH.


    Robert Nißler, Andrea T Müller, Frederike Dohrman, Larissa Kurth, Han Li, Eric G Cosio, Benjamin S Flavel, Juan Pablo Giraldo, Axel Mithöfer, Sebastian Kruss. Detection and Imaging of the Plant Pathogen Response by Near-Infrared Fluorescent Polyphenol Sensors. Angewandte Chemie (International ed. in English). 2022 Jan 10;61(2):e202108373

    Expand section icon Mesh Tags

    Expand section icon Substances

    PMID: 34608727

    View Full Text