The red uorescent protein mCherry is widely used as a tagged protein in intracellular protein positioning and dynamic tracing due to its stable characteristics in color and monomer molecule. In this study, mCherry was used as a tag to explore the cell wall-directed binding of the carbohydrate-binding module (CBM). The results of uorescent signal detection showed that both the ubiquitin promoter and the CaMV35S promoter could drive the expression of mCherry gene in seeds, leaves, and roots. The results of subcellular localization by different methods displayed that the uorescence signals were concentrated on the cell walls of the root, stem, leaf, and vascular bundle sheath. It indicated that the CBM could mediate the red uorescent protein anchoring on the cell wall.
Key MessageSP-CBM11-mCherry was transformed into rice along with Epsps, and overexpression of SP-CBM11-mCherry caused deep red color in seeds, and the mCherry anchored on the cell wall.