中国科学院机构知识库网格系统: 检索

浏览/检索结果: 共7条，第1-7条

帮助

条数/页：排序方式：
	*Discovery of the enigmatic taeniopterid plant Ilfeldia* from the lower Permian of North China and its palaeophytogeographical implications 期刊论文 OAI收割 HISTORICAL BIOLOGY, 2024, 页码: 8 作者: Zhou, Weiming; Psenicka, Josef; Hilton, Jason; Wang, Jun** \| 收藏 \| 浏览/下载：4/0 \| 提交时间：2025/03/28 Xerophilous plant palaeophytogeography plant migration long-distance dispersal Wegenerian Pangaea continental connection
	Migration and emission characteristics of trace elements in coal-fired power plant under deep peak load regulation 期刊论文 OAI收割 SCIENCE OF THE TOTAL ENVIRONMENT, 2023, 卷号: 868, 页码: 8 作者: Wang, Huasheng; Zou, Chan; Hu, Hongyun; Gu, Guojian; Dong, Lu \| 收藏 \| 浏览/下载：0/0 \| 提交时间：2023/05/19 Coal fired power plant Deep peak load regulation Trace elements Migration Emission
	Five long-distance dispersals shaped the major intercontinental disjunctions in Tectariaceae s.l. (Polypodiales, Polypodiopsida) 期刊论文 OAI收割 MOLECULAR PHYLOGENETICS AND EVOLUTION, 2023, 卷号: 186, 页码: 107845 作者: Wan,Xia; Zhang,Liang; Lehtonen,Samuli; Tuomisto,Hanna; Zhang,Da-Wei \| 收藏 \| 浏览/下载：25/0 \| 提交时间：2024/07/25 Arthropteris Boreotropical migration Diversification Leaf dissection Pteridryaceae Species radiation FOUNDER-EVENT SPECIATION PLANT SIZE HISTORICAL BIOGEOGRAPHY PHYLOGENETIC PLACEMENT MODEL SELECTION EPIPHYTIC FERN NORTHERN-HEMISPHERE MAXIMUM-LIKELIHOOD NUCLEAR MARKERS TOOTHED LEAVES
	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.
	Nutritional imbalance suppresses migratory phenotypes of the Mongolian locust (Oedaleus asiaticus) 期刊论文 OAI收割 ROYAL SOCIETY OPEN SCIENCE, 2017, 卷号: 4, 期号: 6 作者: Cease, Arianne J.; Harrison, Jon F.; Hao, Shuguang; Niren, Danielle C.; Zhang, Guangming \| 收藏 \| 浏览/下载：10/0 \| 提交时间：2022/03/28 migratory polyphenism plant-insect interactions nutrition grasslands migration movement ecology
	High allozyme diversity and unidirectional linear migration patterns within a population of tetraploid Isoetes sinensis, a rare and endangered pteridophyte 期刊论文 OAI收割 AQUATIC BOTANY, 2009, 卷号: 90, 期号: 1, 页码: 52-58 作者: Chen, Yuan-Yuan; Yang, Wei; Li, Wei; Li, Zuo-Zhou; Huang, Hong-Wen \| 收藏 \| 浏览/下载：16/0 \| 提交时间：2017/04/13 Allotetraploid Genetic diversity Hydrochory Isoetes Riparian plant Unidirectional migration
	High interpopulation genetic differentiation and unidirectional linear migration patterns in Myricaria laxiflora (Tamaricaceae), an endemic riparian plant in the Three Gorges valley of the Yangtze River 期刊论文 OAI收割 AMERICAN JOURNAL OF BOTANY, 2006, 卷号: 93, 期号: 2, 页码: 206-215 作者: Liu, YF; Wang, Y; Huang, HW \| 收藏 \| 浏览/下载：15/0 \| 提交时间：2017/04/13 conservation gene flow hydrochory Myricaria population structure riparian plant unidirectional migration Yangtze River valley