EFFECTS OF MAGNESIUM ION DOPED CARBON QUANTUM DOTS ON ROOT GROWTH AND RELATED GENES OF ARABIDOPSIS THALIANA SEEDLINGS

As time progresses of the times, different kinds of nanomaterials affect the life cycle of plants as they are released into the environment. The purpose of this paper was to take Mg-doped carbon quantum dots (Mg-CDs) as an example to research the Arabidopsis thaliana. The effects of Mg-CDs on the growth and development of A. thaliana was examined. The absorption and distribution of Mg-CDs in A. thaliana roots and leaves and the relative expression levels of related genes (E2Fa and Histone H4) in the cell cycle of A. thaliana seedlings were also determined. Results showed that Mg-CDs could accelerate the growth of A. thaliana roots. They were widely distributed in the cell wall and cytoplasm of the roots and chloroplasts of the leaves, and the relative expression levels of E2Fa increased first and then decreased with the increase in Mg-CDs concentration, as did that of Histone H4. Further analysis indicated that Mg-CDs affected the cell cycle of A. thaliana seedlings, thus resulting in root elongation. These findings showed that Mg-CDs have a great application potential in biotechnology research.