光合作用
量子产额
光系统II
鲁比斯科
叶绿体
叶绿素
光合有效辐射
电子传输链
开枪
光合效率
叶绿素荧光
园艺
化学
植物
光化学
生物
荧光
生物化学
基因
物理
量子力学
作者
Yadong Li,Xiaoqin Pan,Xiaokai Xu,Ying Wu,Jianle Zhuang,Xuejie Zhang,Haoran Zhang,Bingfu Lei,Chaofan Hu,Yingliang Liu
标识
DOI:10.1016/j.jhazmat.2020.124534
摘要
Carbon dots (CDs) with gradient-changed quantum yield (QY) were prepared by regulating the graphitic N and hydroxyl group contents. Then, the QY effect of CDs on plant photosynthesis was studied using chloroplasts and rice plants. After incubation for 2 h in the dark, CDs entered into the chloroplasts and converted ultraviolet radiation to photosynthetically active radiation. By this mechanism, CD1:0.2 (300 μg·mL−1) with a moderate QY of 46.42% significantly increased the photosynthetic activity of chloroplast (200 μg·mL−1) to reduce DCPIP and ferricyanide by 43.77% and 25.45%, respectively. After spraying on rice seedlings, CD1:0.2 (300 μg·mL−1) was evenly distributed in the leaves and resulted in maximum increases in the electron transport rate and photosynthetic efficiency of photosystem II by 29.81% and 29.88%, respectively. Furthermore, CD1:0.2 significantly increased the chlorophyll content and RuBisCO carboxylase activity of rice by 64.53% and 23.39%, respectively. Consequently, significant increases were observed in the growth of CD1:0.2-treated rice, including 18.99%, 64.31%, and 61.79% increases in shoot length, dry weights of shoot and root. These findings contribute to the exploitation of solar energy and agricultural production using CDs in the future.
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