Nanoparticle Charge and Size Control Foliar Delivery Efficiency to Plant Cells and Organelles

Fundamental and quantitative understanding of the interactions between nanoparticles and plant leaves is crucial for advancing the field of nanoenabled agriculture. Herein, we systematically investigated and modeled how ζ potential (−52.3 mV to +36.6 mV) and hydrodynamic size (1.7–18 nm) of hydrophi...

Full description

Saved in:
Bibliographic Details
Published in:ACS nano 2020-07, Vol.14 (7), p.7970-7986
Main Authors: Hu, Peiguang, An, Jing, Faulkner, Maquela M, Wu, Honghong, Li, Zhaohu, Tian, Xiaoli, Giraldo, Juan Pablo
Format: Article
Language:English
Subjects:
Cerium
Chloroplasts
Nanoparticles
Plant Cells
Plant Leaves
Silicon Dioxide
Citations: Items that this one cites
Items that cite this one
Online Access:Get full text
Tags: Add Tag
No Tags, Be the first to tag this record!
Description
Summary:Fundamental and quantitative understanding of the interactions between nanoparticles and plant leaves is crucial for advancing the field of nanoenabled agriculture. Herein, we systematically investigated and modeled how ζ potential (−52.3 mV to +36.6 mV) and hydrodynamic size (1.7–18 nm) of hydrophilic nanoparticles influence delivery efficiency and pathways to specific leaf cells and organelles. We studied interactions of nanoparticles of agricultural interest including carbon dots (CDs, 0.5 and 5 mg/mL), cerium oxide (CeO2, 0.5 mg/mL), and silica (SiO2, 0.5 mg/mL) nanoparticles with leaves of two major crop species having contrasting leaf anatomies: cotton (dicotyledon) and maize (monocotyledon). Biocompatible CDs allowed real-time tracking of nanoparticle translocation and distribution in planta by confocal fluorescence microscopy at high spatial (∼200 nm) and temporal (2–5 min) resolution. Nanoparticle formulations with surfactants (Silwet L-77) that reduced surface tension to 22 mN/m were found to be crucial for enabling rapid uptake (
ISSN:1936-0851
1936-086X
DOI:10.1021/acsnano.9b09178