Real-Time Fluorescence Imaging of the Abscisic Acid Receptor Allows Nondestructive Visualization of Plant Stress

Jing Fang Yang, Wei Jie Chen, Li Ming Zhou, Kamalani Achala H. Hewage, Yi Xuan Fu, Mo Xian Chen, Bo He, Rong Jie Pei, Ke Song, Jian Hua Zhang, Jun Yin, Ge Fei Hao*, Guang Fu Yang*

*Corresponding author for this work

Research output: Contribution to journalJournal articlepeer-review

5 Citations (Scopus)


Environmental stress greatly decreases crop yield. The application of noninvasive techniques is one of the most practical and feasible ways of monitoring the health condition of plants under stress. However, it remains largely unsolved. A chemical fluorescent probe can be applied as a typical nondestructive method, but it has not been applied in living plants for stress detection to date. The abscisic acid (ABA) receptor plays a central role in conferring tolerance to environmental stresses and is an excellent target for developing fluorescent probes. Herein, we developed a fluorescence molecular imaging technology to monitor live plant stress by visualizing the protein expression level of the ABA receptor PYR1. A computer-aided designed indicator dye, flubactin, exhibited an 8-fold enhancement in fluorescence intensity upon interaction with PYR1. In vitro and in vivo experiments showed that flubactin is suitable to be used to detect salt stress in plants in real time. Moreover, the low toxicity of flubactin promotes its application in the future. Our work opens a new era for the nondestructive visualization of plant stress in vivo.

Original languageEnglish
Pages (from-to)28489-28500
Number of pages12
JournalACS Applied Materials and Interfaces
Issue number25
Early online date1 Jun 2022
Publication statusPublished - 29 Jun 2022

Scopus Subject Areas

  • Materials Science(all)

User-Defined Keywords

  • dansylamide
  • indicator dye
  • noninvasive
  • PYR1
  • salt stress


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