Carbon dots promoted soybean photosynthesis and amino acid biosynthesis under drought stress: Reactive oxygen species scavenging and nitrogen metabolism

Regulation Mechanisms of Nitrogen-Doped Carbon Dots in Enhanced Maize Photosynthesis under Drought Stress

“…Therefore, we propose that N-CDs could increase crop photosynthesis in drought through light harvesting, photoprotection (PP) (ROS scavenging), and light repairing (upregulated expression of psbA and fast synthesis of the D1 protein). Recent studies demonstrated that CDs and N-CDs could promote the growth of tomatoes, maize, and soybeans under drought stress by modulating rhizospheric properties, nutrient bioavailability, photosynthesis, and phytohormones. − However, the mechanism of promoted photosynthesis and whether N-CDs could increase crop yield in drought are still unknown. Thus, the aim of this work is to investigate (1) the mechanism of promoted photosynthesis by N-CDs under drought stress, (2) the advantages of N-CDs in enhancing crop drought tolerance, and (3) the effect of crop yield by foliar-applied N-CDs under drought stress.…”

An insight into the role of carbon dots in the agriculture system: a review

“…The positive effects of CDs in crop systems supported sustainable agriculture under adverse conditions. 208 Wang et al explored heat stress alleviation by CDs in Italian lettuce, wherein Salvia miltiorrhiza-derived CDs were employed to relieve heat stress. The study revealed that CDs enhanced the antioxidant enzyme activity and osmotic regulation (indicated by the decrease in proline content) and relieved the damage caused due to lipid peroxidation of the plant cell (indicated by the decrease in MDA levels), thereby improving the heat stress resistance (Fig.…”

“…The positive effects of CDs in crop systems supported sustainable agriculture under adverse conditions. 208…”

Carbon Dots Embedded in Nanoporous SiO2 Nanoparticles for Enhancing Photosynthesis in Agricultural Crops

“…17,21,22 Moreover, CDs (5 mg•L −1 ) increased the photosynthetic rate of soybean by 32.6%, resulting in a 21.5% improvement in yield and eventually alleviating drought resistance. 23 Further, foliar application of N-CDs (5 mg•L −1 ) on maize resulted in a dramatic increase in biomass (72.3%) because of the improvement in the light conversion efficiency (121.0%). 24 It is known that spraying nanomaterials (NMs) on leaves could significantly improve photosynthesis and crop yield, which is more effective than root exposure.…”

“…Carbon dots (CDs) are considered to be LCMs for nanoenable agriculture because of their good bioavailability, low toxicity, and favorable light stability. − Specifically, the application of CDs could improve the chlorophyll content, chloroplast activity, Rubisco, and other factors related to crop photosynthesis. − CDs are excellent LCMs and can be used as artificial photoantennae, thereby converting UV to far-red and visible light, which ultimately improves photosynthesis and crop yield. ,, Moreover, CDs (5 mg·L –1 ) increased the photosynthetic rate of soybean by 32.6%, resulting in a 21.5% improvement in yield and eventually alleviating drought resistance …”