High-Photon-Harvesting Nanophotofertilizers for Plant Growth Multiregulation

Area of Science:

• Agricultural Science
• Materials Science
• Plant Biology

Background:

• Nanophotoresponsive technology offers potential for enhancing plant photosynthesis.
• Current limitations include inefficient light absorption and electron transfer.

Purpose of the Study:

• To develop and evaluate a novel photoresponsive nanosystem, LDNPs@Fe,Cu-CDs, for improving plant photosynthesis and growth.
• To investigate the mechanisms of action, including light harvesting, photothermal effects, and electron transfer.

Main Methods:

• Hydrothermal synthesis was used to fabricate the LDNPs@Fe,Cu-CDs nanosystem.
• The nanosystem was applied to *N. benthamiana* via surface spraying.
• Photosynthetic efficiency, chlorophyll content, and plant biomass were measured.

Main Results:

• The LDNPs@Fe,Cu-CDs nanosystem harvested near-infrared and ultraviolet light, enhancing photosynthesis by 67.5%.
• Electron transfer in the photosynthetic chain improved by 33.2%, chlorophyll levels increased by 28.4%.
• Plant wet and dry weights increased by 57.7% and 50.5%, respectively, with improved resilience to stress.

Conclusions:

• LDNPs@Fe,Cu-CDs effectively enhances plant photosynthesis and growth by optimizing light absorption and electron transfer.
• The nanosystem demonstrates potential as a "nanophotofertilizer" for sustainable agriculture.
• It offers a promising solution to overcome limitations in current nanophotoresponsive technologies.