文献类型：期刊文献

英文题名：Carbon-based nanomaterials alter the composition of the fungal endophyte community in rice (Oryza sativa L.)

作者：Hao, Yi[1,4] Ma, Chuanxin[2] White, Jason C.[2] Adeel, Muhammad[1] Jiang, Ruohan[1] Zhao, Ziqian[1] Rao, Yuhang[1] Chen, Guangcai[3] Rui, Yukui[1] Xing, Baoshan[4]

第一作者：Hao, Yi

通信作者：Rui, YK[1];Ma, CX[2]

机构：[1]China Agr Univ, Beijing Key Lab Farmland Soil Pollut Prevent & Re, Coll Resources & Environm Sci, Beijing 100193, Peoples R China;[2]Connecticut Agr Expt Stn, Dept Analyt Chem, New Haven, CT 06504 USA;[3]Chinese Acad Forestry, Res Inst Subtrop Forestry, Hangzhou 311400, Zhejiang, Peoples R China;[4]Univ Massachusetts, Stockbridge Sch Agr, Amherst, MA 01003 USA

年份：2020

卷号：7

期号：7

起止页码：2047-2060

外文期刊名：ENVIRONMENTAL SCIENCE-NANO

收录：;EI(收录号：20203609124631);Scopus(收录号：2-s2.0-85090020177);WOS:【SCI-EXPANDED(收录号:WOS:000549099000011)】；

基金：The project was supported by National Key R&D Program of China (2017YFD0801300, 2017YFD0801103), the NSFC-Guangdong Joint Fund (U1401234), the National Natural Science Foundation of China (No. 41371471, No. 31501791) and the Key National Natural Science Foundation of China (No. 41130526).

语种：英文

外文关键词：Fungi - Graphene - Reduced Graphene Oxide

摘要：Rice seedlings were exposed to different types of carbon-based nanomaterials (CNMs), including reduced graphene oxide (rGO), multi-walled carbon nanotubes (MWCNTs), and fullerene (C-60), at 10-250 mg L(-1)under hydroponic conditions for 20 days to investigate the impact of CMN exposure on the composition of the rice endophyte community. Physiological results demonstrated that exposure 10 and 50 mg L-1MWCNTs and C(60)had no overt effect on plant growth; however, at 250 mg L(-1)the fresh biomass was reduced by 17.9-23.7% as compared to the control. Conversely, the addition of 50 and 250 mg L(-1)rGO increased rice biomass. Exposure to 250 mg L-1MWCNTs and C(60)resulted in approximately 20-40% decrease in the content of three endogenous phytohormones, including indole-3-acetic acid (IAA), zeatin riboside (ZR), and gibberellic acid3 (GA3). A high-throughput sequencing technique was used to analyze the composition of the fungal endophyte community as affected by CNMs exposure. The results suggest that fungal endophytes in rice were sensitive to CNM exposure even at 10 mg L-1CNM exposures; the community composition at different levels (phylum, class, and genus) in the 250 mg L-1MWCNTs and C(60)treatments were significantly altered as compared to the control. Taken together, the present work provides new insight on the potential consequences of NM exposure on terrestrial plants. Additionally, it is clear that a systematic evaluation of the risks of CNMs to commensal species such as endophytic fungi is necessary to fully understood the risk these materials posed in the environment.