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浏览/检索结果: 共25条，第1-10条 帮助

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Cytotoxic and pro-apoptotic effects of botanical drugs derived from the indigenous cultivated medicinal plant Paris polyphylla var. yunnanensis 期刊论文  OAI收割
FRONTIERS IN PHARMACOLOGY, 2023, 卷号: 14, 页码: 1100825
作者:  Yan,Xiu-Xiang;  Zhao,Yan-Qiang;  He,Yun
  |  收藏  |  浏览/下载：10/0  |  提交时间：2024/05/09
Nine New Pregnane Glycosides from the Cultivated Medicinal Plant Marsdenia tenacissima 期刊论文  OAI收割
MOLECULES, 2023, 卷号: 28, 期号: 6, 页码: 2705
作者:  Meng,Qian-Qian;  Tong,Shun-Yao;  Peng,Xing-Rong;  Zhao,Yu-Qing;  Li,Zheng-Hui
  |  收藏  |  浏览/下载：12/0  |  提交时间：2024/05/09
High-Efficiency Utilization of Waste Tobacco Stems to Synthesize Novel Biomass-Based Carbon Dots for Precise Detection of Tetracycline Antibiotic Residues 期刊论文  OAI收割
Nanomaterials, 2022, 卷号: 12, 期号: 18
作者:  Hui Yang;  Yunlong Wei;  Xiufang Yan;  Chao Nie;  Zhenchun Sun
  |  收藏  |  浏览/下载：15/0  |  提交时间：2023/03/31
Kadsura longipedunculata Finet & Gagnepain (Schisandraceae): An Overview of Botany, Traditional Uses, Phytochemistry and Pharmacological Activities 期刊论文  OAI收割
FORESTS, 2022, 卷号: 13, 期号: 8, 页码: 1281
作者:  Idrees, Muhammad;  Zhang, Zhiyong;  Yaseen, Aftab;  Jiao, Yongqing;  Zheng, Xu
  |  收藏  |  浏览/下载：8/0  |  提交时间：2024/04/30
Three new diterpenoids fromEuphorbia peplus 期刊论文  OAI收割
NATURAL PRODUCT RESEARCH, 2021, 卷号: 35, 期号: 21, 页码: 3901-3907
作者:  Chen,Yan-Ni;  Lu,Qing-Yun;  Li,Dong-Mei;  Li,Ying-Yao;  Pu,Xue-Xue
  |  收藏  |  浏览/下载：42/0  |  提交时间：2022/04/02
Ecdysteroids and spirosterane steroids from the traditional Chinese medicine Paris polyphylla var. yunnanensis 期刊论文  OAI收割
PHYTOCHEMISTRY LETTERS, 2021, 卷号: 45, 页码: 117-120
作者:  Guo,Kai;  Ren,Xue;  Mu,Rong-Fang;  Zhou,Ting-Ting;  Li,Dan
  |  收藏  |  浏览/下载：45/0  |  提交时间：2022/04/02
Neuroprotective schinortriterpenoids from Schisandra neglecta collected in Medog County, Tibet, China 期刊论文  OAI收割
BIOORGANIC CHEMISTRY, 2021, 卷号: 110, 页码: 104785
作者:  Wang,Bin;  Hu,Kun;  Li,Xiao-Nian;  Sun,Han-Dong;  Qin,Hong-Bo
  |  收藏  |  浏览/下载：42/0  |  提交时间：2022/04/02
Effects of Elevated CO(2)Concentration and Nitrogen Application Levels on the Accumulation and Translocation of Non-Structural Carbohydrates in Japonica Rice 期刊论文  OAI收割
SUSTAINABILITY, 2020, 卷号: 12, 期号: 13
作者:  Cao, Peipei;  Sun, Wenjuan;  Huang, Yao;  Yang, Jingrui;  Yang, Kai
  |  收藏  |  浏览/下载：28/0  |  提交时间：2022/03/01
Two new ursane-type nortriterpenes from Lonicera macranthoides and their iNOS-inhibitory activities 期刊论文  OAI收割
CHINESE JOURNAL OF NATURAL MEDICINES, 2019, 卷号: 17, 期号: 1, 页码: 27-32
作者:  Mei YuDan;  Zhang Nan;  Zhang WeiYang;  Tang JinShan;  Zhou Hua
  |  收藏  |  浏览/下载：12/0  |  提交时间：2021/02/02
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：142/0  |  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.