A Plant-Derived Arabinoxylan Platform for Biomolecule Delivery into Plant Cells

Area of Science:

• Plant Biotechnology
• Nanotechnology
• Agricultural Science

Background:

• Nanotechnology enables targeted delivery of agrochemicals and biomolecules to enhance plant productivity.
• Developing biocompatible and nontoxic nanocarriers is crucial for sustainable agriculture.

Purpose of the Study:

• To evaluate arabinoxylan (AX)-based nanocarriers for delivering plasmid DNA (pDNA) into plants.
• To assess the biosafety and efficacy of AX nanocarriers for agricultural applications.

Main Methods:

• Synthesized two AX-based nanocarriers: fluorescein isothiocyanate-labeled AX (AX-FITC) and positively charged AX (AX+).
• Tested plant uptake via passive incubation, leaf injection, and vacuum infiltration.
• Assessed phytotoxicity and genotoxicity in tomato plants and analyzed transcriptomic changes.

Main Results:

• Leaf injection and vacuum infiltration were most effective for delivering pDNA polyplexes.
• AX nanocarriers demonstrated no phytotoxicity or genotoxicity in tomato plants.
• AX-based nanocarriers show promise for delivering DNA and agrochemicals.

Conclusions:

• Arabinoxylan (AX) is a sustainable, plant-derived material suitable for nanocarrier development.
• AX nanocarriers offer a "green" alternative to synthetic nanomaterials for plant biotechnology.
• This technology has significant potential for seed and plant treatments in agriculture.