文献类型：期刊文献

英文题名：Impact of the Arbuscular Mycorrhizal Fungus Funneliformis mosseae on the Physiological and Defence Responses of Canna indica to Copper Oxide Nanoparticles Stress

作者：Luo, Jie[1,2];Yan, Qiuxia[2];Yang, Guo[3];Wang, Youbao[1]

机构：[1]Anhui Normal Univ, Sch Ecol & Environm, Wuhu 241000, Peoples R China;[2]Shaoxing Univ, Sch Yuanpei, Shaoxing 312000, Peoples R China;[3]Shaoxing Univ, Sch Life Sci, Shaoxing 312000, Peoples R China

年份：2022

卷号：8

期号：5

外文期刊名：JOURNAL OF FUNGI

收录：SCI-EXPANDED(收录号：WOS:000801536400001)、、Scopus(收录号：2-s2.0-85130708168)、WOS

基金：The work was supported by the National Natural Science Foundation of China (No. 31070401), the University Synergy Innovation Program of Anhui Province (GXXT-2020-075), the University Natural Science Research Project of Anhui Province (YJS20210138), and the National College Student Innovation Training Program (202010349031).

语种：英文

外文关键词：arbuscular mycorrhizal fungi; nano-CuO; antioxidant; stress-response gene

外文摘要：Copper oxide nanoparticles (nano-CuO) are recognized as an emerging pollutant. Arbuscular mycorrhizal fungi (AMF) can mitigate the adverse impacts of various pollutants on host plants. However, AMF's mechanism for alleviating nano-CuO phytotoxicity remains unclear. The goal of this study was to evaluate how AMF inoculations affect the physiological features of Canna indica seedlings exposed to nano-CuO stress. Compared with the non-AMF inoculated treatment, AMF inoculations noticeably improved plant biomass, mycorrhizal colonization, leaf chlorophyll contents, and the photosynthetic parameters of C. indica under nano-CuO treatments. Moreover, AMF inoculation was able to significantly mitigate nano-CuO stress by enhancing antioxidant enzyme activities and decreasing ROS levels in the leaves and roots of C. indica, thus increasing the expression of genes involved in the antioxidant response. In addition, AMF inoculation reduced the level of Cu in seedlings and was associated with an increased expression of Cu transport genes and metallothionein genes. Furthermore, AMF inoculations increased the expression levels of organic acid metabolism-associated genes while facilitating organic acid secretion, thus reducing the accumulation of Cu. The data demonstrate that AMF-plant symbiosis is a feasible biocontrol approach to remediate nano-CuO pollution.