Bioimaging Application and Growth-Promoting Behavior of Carbon Dots from Pollen on Hydroponically Cultivated Rome Lettuce

Abstract

Carbon dots (CDs) obtained from rapeseed pollen with a high production yield, good biocompatibility, good water solubility, low cost, and simple synthesis are systematically characterized. They can be directly added to Hoagland nutrient solution for planting hydroponically cultivated Lactuca sativa L. to explore their influence on the plants at different concentrations. By measuring lettuce indices of growth, morphology, nutrition quality, gas exchange, and content of photosynthetic pigment, amazing growth-promotion effects of CDs were discovered, and the mechanism was analyzed. Moreover, the in vivo transport route of CDs in lettuce was evaluated by macroscopic and microscopic observations under UV light excitation. The results demonstrate that pollen-derived CDs can be potentially used as a miraculous fertilizer for agricultural applications and as a great in vivo plant bioimaging probe.

Enhanced Biological Photosynthetic Efficiency Using Light‐Harvesting Engineering with Dual‐Emissive Carbon Dots

“…The enhancement of chlorophyll content is beneficial for harnessing more light energy in photosynthesis. These data prove that CDs have low phytotoxicity and exhibited negligible effect on the physiological metabolism, CD‐induced enhancement in chlorophyll content enables plants to absorb more light energy, which is consistent with our previous studies on the phytotoxicity of CDs in plants …”

Influence of Carbon Quantum Dots on the Biome

“…Zheng et al, for example, reported that a 25-day exposure of 10-30 mg/L of CQDs, obtained from rapeseed (Brassica napus) pollen, to hydroponically grown Rome lettuce (Lactuca sativa) improved plant growth. The mechanism was suggested to be through an increase in leaf number and foliar area [35]. They also reported that the 20 mg/L CQD treatment reduced nitrate content in leaves; suggesting that the CQDs The terminal sink for all pollutants, the aquatic ecosystem, plays important roles in the full life cycle of ENMs due to their intentional and unintentional release [22].…”

Glass-ceramics with thermally stable blue-red emission for high-power horticultural LED applications

“…The indicators of shoot weigh (fresh and dry) were measured and the data of 4 random plant averaged, while the rest of indicators are obtained for 4 times. All indicators are gauged according to previously disclosed methods [27,28] .…”