气候变化领域集成服务门户(CCPortal): Analysis of anatomical changes and cadmium distribution in Aegiceras corniculatum (L.) Blanco roots under cadmium stress

CCPortal

DOI	10.1016/j.marpolbul.2019.110536
	Analysis of anatomical changes and cadmium distribution in Aegiceras corniculatum (L.) Blanco roots under cadmium stress
	Li J.; Yu J.; Du D.; Liu J.; Lu H.; Yan C.
发表日期	2019
ISSN	0025326X
卷号	149
英文摘要	Heavy metal stress changes the morphological and anatomical structure of plant organs. In this study, we determined the anatomical changes and Cd distribution in the roots of Aegiceras corniculatum (L.) Blanco (Black mangrove) under Cd stress. The results showed that Cd levels in A. corniculatum root tissues decreased in the following order: endodermis > pith > xylem > epidermis and exodermis > phloem > cortex. The endodermis secondary casparian strip replaces exodermis casparian strip and plays a role in the “retardation mechanism”, which sort of compensates for the missing exodermis retardation effect. The xylem and pith both show high affinity for Cd and contain enriched Cd. This creates a low-Cd environment for phloem and protects the nutrient transport function of the vasculature against Cd toxicity. The present study provides new evidences suggesting that Cd regional enrichment and anatomical structure changes are an adaptive strategy of mangrove plants to HM tolerance. © 2019 Elsevier Ltd
英文关键词	Anatomy; Heavy metal; Mangrove; Morphology
语种	英语
scopus关键词	Cadmium; Heavy metals; Morphology; Anatomical changes; Anatomical structures; Anatomy; Heavy metal stress; Mangrove; Nutrient transport; Retardation effect; Retardation Mechanisms; Plants (botany); cadmium; cadmium; anatomy; bioaccumulation; cadmium; mangrove; morphology; pollution effect; pollution tolerance; root; toxicity; Aegicerase corniculatum; Article; binding affinity; casparian strip; chemical analysis; cortex; endodermis; energy dispersive X ray spectroscopy; mangrove; metal binding; nonhuman; phloem; phytotoxicity; pith; plant epidermis; plant exodermis; plant nutrition; plant root; plant stress; plant structures; plant tissue; scanning electron microscopy; xylem; adaptation; anatomy and histology; drug effect; metabolism; pharmacokinetics; physiological stress; plant root; Primulaceae; spectroscopy; tissue distribution; toxicity; water pollutant; wetland; Aegiceras corniculatum; Avicennia germinans; Adaptation, Biological; Cadmium; Microscopy, Electron, Scanning; Plant Epidermis; Plant Roots; Primulaceae; Spectrometry, X-Ray Emission; Stress, Physiological; Tissue Distribution; Water Pollutants, Chemical; Wetlands; Xylem
来源期刊	Marine Pollution Bulletin
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/149548
作者单位	Institute of Environment and Ecology, Institute of Environmental Health and Ecological Security, School of the Environment and Safety Engineering, Jiangsu University, Zhenjiang, 212013, China; State Key Lab of Marine Environmental Science, Xiamen University, Xiamen, 361102, China
推荐引用方式 GB/T 7714	Li J.,Yu J.,Du D.,et al. Analysis of anatomical changes and cadmium distribution in Aegiceras corniculatum (L.) Blanco roots under cadmium stress[J],2019,149.
APA	Li J.,Yu J.,Du D.,Liu J.,Lu H.,&Yan C..(2019).Analysis of anatomical changes and cadmium distribution in Aegiceras corniculatum (L.) Blanco roots under cadmium stress.Marine Pollution Bulletin,149.
MLA	Li J.,et al."Analysis of anatomical changes and cadmium distribution in Aegiceras corniculatum (L.) Blanco roots under cadmium stress".Marine Pollution Bulletin 149(2019).