机构

• 地理科学与资源研究所 [5]
• 成都山地灾害与环境研... [2]
• 高能物理研究所 [2]
• 西双版纳热带植物园 [1]
• 生态环境研究中心 [1]
• 烟台海岸带研究所 [1]
• 更多

采集方式

• OAI收割 [12]

内容类型

• 期刊论文 [10]
• SCI/SSCI论文 [2]

发表日期

• 2019 [1]
• 2018 [5]
• 2014 [1]
• 2012 [1]
• 2010 [1]
• 2009 [1]
• 更多

学科主题

• Agricultur... [1]
• Spectrosco... [1]

筛选

浏览/检索结果: 共12条，第1-10条 帮助 条数/页： 5101520253035404550556065707580859095100 排序方式： 请选择题名升序题名降序提交时间升序提交时间降序作者升序作者降序发表日期升序发表日期降序 食用蔬菜能吸收和积累微塑料 期刊论文  OAI收割 科学通报, 2019, 卷号: 64, 期号: 9, 页码: 928-934 作者:  李连祯;  周倩;  尹娜;  涂晨;  骆永明   |  收藏  |  浏览/下载：144/0  |  提交时间：2020/06/17 微塑料  生菜  聚苯乙烯微球  吸收  积累  健康风险  microplastics  lettuce  polystyrene microbeads  uptake  accumulation  human health risk  Microplastic (MP, 100 nm-5 mm) may present an attributable risk to ecosystem and human health, and its pollution has become a global environmental concern. Despite a wealth of information on the accumulation of MPs in aquatic species, there is no information on the uptake and accumulation of MPs by higher plants. Terrestrial edible plants are directly exposed to MPs when agricultural soil was applied with organic manure, sewage sludge as fertilizer or plastic mulching. In this paper, the uptake of two sizes of polystyrene (PS) microbeads (0.2 and 1.0 mum) and then their distribution and migration in an edible plant lettuce were firstly investigated based on laboratory experiments. We used fluorescent markers to track PS microbeads in plant tissues and found fluorescence to be a sensitive and reliable detection method. Sections from untreated control lettuce showed no autofluorescence. When roots were treated with fluorescently labeled PS microbeads, the microbeads could be identified by its fluorescence. Our main study investigated the uptake of 0.2 mum beads, as few luminescence signals were observed in lettuce roots for 1.0 mum beads in our experiment. We observed that 0.2 mum fluorescent microbeads were extracellularly trapped in the root cap mucilage (which is a highly hydrated polysaccharide) and a dark green tip (which was typical of lettuce roots exposed to label PS beads) was usually visible to the naked eye. Confocal images revealed that the PS luminescence signals were mainly located in the vascular system and on the cell walls of the cortex tissue of the roots, indicated that the beads passed through the intercellular space via the apoplastic transport system. Once inside the central cylinder, the 0.2 mum PS beads were transferred from the roots to the stems and leaves via the vascular system following the transpiration stream. We also observed that the PS beads adhered to one another and self-assembled systematically into grape-like and (chain) string-like clusters in the intercellular space of the root and stem vascular tissue of lettuce plant. In contrast to the root and stem, PS beads were dispersed in the leaf tissue. Here, for the first time we provide evidence of the adherence, uptake, accumulation, and translocation of submicrometer MPs within an edible plant. Our findings highlight the previously underappreciated human exposure pathway to MPs through the consumption of contaminated crops and emphasize the need for new management strategies to control the release of MPs waste products into the terrestrial environment. Ultimately, the potential impacts of low range sized MPs on food safety of crop plants and human health need to be urgently considered.   Elaborate differences between trees and understory plants in the deployment of fine roots 期刊论文  OAI收割 PLANT AND SOIL, 2018, 卷号: 431, 期号: 1-2, 页码: 433-447 作者:  Jiang, Peipei;  Wang, Huimin;  Fu, Xiaoli;  Dai, Xiaoqin;  Kou, Liang   |  收藏  |  浏览/下载：60/0  |  提交时间：2019/05/23 Absorptive roots  Branch capacity  Horizontal distribution  Root order  Transport roots  Vertical distribution   Elaborate differences between trees and understory plants in the deployment of fine roots 期刊论文  OAI收割 PLANT AND SOIL, 2018, 卷号: 431, 期号: 1-2, 页码: 433-447 作者:  Jiang, Peipei;  Wang, Huimin;  Fu, Xiaoli;  Dai, Xiaoqin;  Kou, Liang   |  收藏  |  浏览/下载：20/0  |  提交时间：2019/05/23 Absorptive roots  Branch capacity  Horizontal distribution  Root order  Transport roots  Vertical distribution   Elaborate differences between trees and understory plants in the deployment of fine roots 期刊论文  OAI收割 PLANT AND SOIL, 2018, 卷号: 431, 期号: 1-2, 页码: 433-447 作者:  Jiang, Peipei;  Wang, Huimin;  Fu, Xiaoli;  Dai, Xiaoqin;  Kou, Liang   |  收藏  |  浏览/下载：12/0  |  提交时间：2019/05/23 Absorptive roots  Branch capacity  Horizontal distribution  Root order  Transport roots  Vertical distribution   Soil nutrients in relation to vertical roots distribution in the riparian zone of Three Gorges Reservoir, China 期刊论文  OAI收割 JOURNAL OF MOUNTAIN SCIENCE, 2018, 卷号: 15, 期号: 7, 页码: 1498-1509 作者:  Zhong Ronghua;  Hu Jinming;  Bao Yuhai;  Wang Fei;  He Xiubin   |  收藏  |  浏览/下载：113/0  |  提交时间：2018/08/21 Roots distribution  Soil nutrients  Water level fluctuations  Riparian zone  Root surface area density  Root length density   Soil nutrients in relation to vertical roots distribution in the riparian zone of Three Gorges Reservoir, China 期刊论文  OAI收割 JOURNAL OF MOUNTAIN SCIENCE, 2018, 卷号: 15, 期号: 7, 页码: 1498-1509 作者:  Zhong Rong-hua;  Hu Jin-ming;  Bao Yu-hai;  Wang Fei;  He Xiu-bin   |  收藏  |  浏览/下载：22/0  |  提交时间：2020/09/29 Roots distribution  Soil nutrients  Water level fluctuations  Riparian zone  Root surface area density  Root length density   Relation of fine root distribution to soil C in a Cunninghamia lanceolata plantation in subtropical China SCI/SSCI论文  OAI收割 2014 Liao Y. C.; Mccormack M. L.; Fan H. B.; Wang H. M.; Wu J. P.; Tu J.; Liu W. F.; Guo D. L. 收藏  |  浏览/下载：38/0  |  提交时间：2014/12/24 Fine roots  Soil C  Soil N  Fine root mass density  Fine root C density  black spruce forests  longleaf pine forest  vertical-distribution  jack  pine  carbon  dynamics  biomass  ecosystem  nitrogen  heterogeneity   Effects of soil physicochemical properties and stand age on fine root biomass and vertical distribution of plantation forests in the Loess Plateau of China 期刊论文  OAI收割 Environmental Sciences & Ecology, 2012, 卷号: 27, 期号: 4, 页码: 827-836 Chang, Ruiying; Fu, Bojie; Liu, Guohua; Yao, Xueling; Wang, Shuai 收藏  |  浏览/下载：28/0  |  提交时间：2014/11/26 Coefficient of rooting distribution  N concentration of fine roots  Dryland forest  Functional balance theory  Constant allocation theory   Application of Synchrotron Radiation X-Ray Fluorescence to Investigating the Distribution of Trace Elements in Different Organs of Greenhouse Rape 期刊论文  OAI收割 SPECTROSCOPY AND SPECTRAL ANALYSIS, 2010, 卷号: 30, 期号: 2, 页码: 554-558 作者:  Xin, SZ;  Song, YJ;  Lu, C;  Rui, YK;  Xu, W 收藏  |  浏览/下载：116/0  |  提交时间：2016/06/28 Rape grown in greenhouse  Distribution of trace elements  Synchrotron radiation YRF  Leaves  Roots   Application of synchrotron radiation X-ray fluorescence to investigate the distribution of mineral elements in different organs of greenhouse spinach 期刊论文  OAI收割 HORTICULTURAL SCIENCE, 2009, 卷号: 36, 期号: 4, 页码: #REF! 作者:  Xin, SZ;  Song, YJ;  Lv, C;  Rui, YK;  Zhang, FS 收藏  |  浏览/下载：26/0  |  提交时间：2016/04/12 spinach  distribution of mineral elements  synchrotron radiation XRF  leaves  roots  stem