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	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.
	Leaf-age effects on temperature responses of photosynthesis and respiration of an alpine oak, Quercus aquifolioides, in southwestern China SCI/SSCI论文 OAI收割 2015 作者: Zhou H. R.; Xu, M.; Pan, H. L.; Yu, X. B. \| 收藏 \| 浏览/下载：31/0 \| 提交时间：2017/11/09 A_T curve dark respiration leaf aging net assimilation optimum temperature temperature acclimation temperature sensitivity thermal-acclimation elevated co2 limited photosynthesis internal conductance stomatal conductance electron-transport biochemical-model atmospheric co2 carbon exchange spinach leaves
	Photosynthetic refixing of CO2 is responsible for the apparent disparity between mitochondrial respiration in the light and in the dark SCI/SSCI论文 OAI收割 2014 Kang H. J.; Li H.; Tao Y. L.; Ouyang Z. 收藏 \| 浏览/下载：28/0 \| 提交时间：2014/12/24 CO2 refixed Light inhibition Mitochondrial respiration in the dark Mitochondrial respiration in the light ribulose-1 leaf respiration gas-exchange chlorophyll fluorescence (co2)-c-12 emission xanthium-strumarium leaves temperature specificity nitrogen 5-bisphosphate carboxylase oxygenase
	Acclimation of Foliar Respiration and Photosynthesis in Response to Experimental Warming in a Temperate Steppe in Northern China SCI/SSCI论文 OAI收割 2013 作者: Xu M. 收藏 \| 浏览/下载：30/0 \| 提交时间：2014/12/24 elevated atmospheric co2 electron-transport rate leaf dark respiration thermal-acclimation mesophyll conductance growth temperature populus-deltoides rubisco-activase carbon-dioxide water-stress
	Response of leaf dark respiration of winter wheat to changes in CO2 concentration and temperature 期刊论文 OAI收割 CHINESE SCIENCE BULLETIN, 2013, 卷号: 58, 期号: 15, 页码: 1795-1800 作者: Tan KaiYan; Zhou GuangSheng; Ren SanXue \| 收藏 \| 浏览/下载：4/0 \| 提交时间：2023/04/25 elevated CO2 concentration temperature leaf dark respiration winter wheat
	Effects of Elevated CO2 on Physiological Responses of Tall Fescue to Elevated Temperature, Drought Stress, and the Combined Stresses SCI/SSCI论文 OAI收割 2012 作者: Xu M. 收藏 \| 浏览/下载：18/0 \| 提交时间：2012/09/04 leaf dark respiration acute heat-stress atmospheric co2 carbon-dioxide nonstomatal limitations growth temperature kentucky bluegrass down-regulation water deficits climate-change
	Changes in effects of ozone exposure on growth, photosynthesis, and respiration of Ginkgo biloba in Shenyang urban area 期刊论文 OAI收割 PHOTOSYNTHETICA, 2007, 卷号: 45, 期号: 4, 页码: 555-561 作者: He, XY; Fu, SL; Chen, W; Zhao, TH; Xu, S \| 收藏 \| 浏览/下载：29/0 \| 提交时间：2011/09/23 Carboxylation Efficiency Chlorophyll Dark Respiration Gas Exchange Intercellular Co2 Concentration Leaf Area Index Non-stomatal Limitations Photorespiration Stomatal Conductance Transpiration Rate
	Changes in effects of ozone exposure on growth, photosynthesis, and respiration of Ginkgo biloba in Shenyang urban area 期刊论文 OAI收割 PHOTOSYNTHETICA, 2007, 卷号: 45, 期号: 4, 页码: 555-561 He, XY; Fu, SL; Chen, W; Zhao, TH; Xu, S; Tuba, Z 收藏 \| 浏览/下载：20/0 \| 提交时间：2011/09/23 carboxylation efficiency chlorophyll dark respiration gas exchange intercellular CO2 concentration leaf area index non-stomatal limitations photorespiration stomatal conductance transpiration rate