文献类型：期刊文献

英文题名：Distribution of different surface modified carbon dots in pumpkin seedlings

作者：Qian, Kun[1] Guo, Huiyuan[2] Chen, Guangcai[3] Ma, Chuanxin[2,4] Xing, Baoshan[2]

第一作者：Qian, Kun

通信作者：Qian, K[1]

机构：[1]Southwest Univ, Coll Plant Protect, Chongqing 400715, Peoples R China;[2]Univ Massachusetts, Stockbridge Sch Agr, Amherst, MA 01003 USA;[3]Chinese Acad Forestry, Res Inst Subtrop Forestry, Hangzhou 311400, Zhejiang, Peoples R China;[4]Connecticut Agr Expt Stn, Dept Analyt Chem, New Haven, CT 06504 USA

年份：2018

卷号：8

期号：1

外文期刊名：SCIENTIFIC REPORTS

收录：;Scopus(收录号：2-s2.0-85047621026);WOS:【SCI-EXPANDED(收录号:WOS:000432656400004)】；

基金：This work was supported by The National Key Research and Development Program of China (No: 2017YFD 0200301).

语种：英文

摘要：The distribution of surface modified carbon dots (CDs) in the pumpkin seedlings was studied by visualization techniques and their potential phytotoxicity was investigated at both the physiological and biochemical levels. The average size of carbon dots was approximately 4 nm. The fluorescent peaks of bared CDs, CD-PEI and CD-PAA were between 420 nm and 500 nm, indicating CDs could emit blue and green fluorescence. Fluorescent images showed that all three types of CDs could accumulate in the pumpkin roots and translocate to the shoots, although the distribution pattern of each CDs was obviously different. At the biochemical level, the elevated antioxidant enzymes in pumpkin roots suggest that all the CDs could potentially trigger the antioxidant defense systems in pumpkin seedlings. Additionally, such alteration was greater in the roots than in the shoots. Our study represents a new perspective on CD visualization in plant tissues and provide useful information for the potential toxicity of different types of CDs to terrestrial plants, which is of importance to agricultural application.