干旱区生态环境知识资源中心(Arid): Tissue-specific bioaccumulation of heavy metals in Ammopiptanthus mongolicus, the only evergreen shrub in the desert of Northwest China

Arid

DOI	10.6165/tai.2020.65.140
	Tissue-specific bioaccumulation of heavy metals in Ammopiptanthus mongolicus, the only evergreen shrub in the desert of Northwest China
	Yang, Yong-Zhi 1; Gao, Run-Hong 1; Luo, Min-Xin 2; Huang, Bing-Hong 2; Liao, Pei-Chun 2
通讯作者	Gao, Run-Hong ; Liao, Pei-Chun
来源期刊	TAIWANIA
ISSN	0372-333X
出版年	2020
卷号	65 期号:2 页码:140-148
英文摘要	The concentration of heavy metals (HMs) in plants is determined by the background values in soil and/or the expression of genes related to HM metabolism. To determine if the bioaccumulation of HMs in Ammopiptanthus mongolicus, an evergreen desert shrub commonly used as a traditional medicine, is related to environmental background and/or tissue (organ) specific, the HM concentrations (As, Cd, Cr, Cu, Hg, Pb, Ni, and Zn) in the soil, roots, stems, and leaves of A. mongolicus in the desert of northwestern China were measured. Efficiencies of bioconcentration, bioaccumulation, and translocation to different portions of the plant were calculated. A linear mixed-effects model was used to test the effects of environmental background and tissue specificity on bioaccumulation. The results showed that most HMs did not exceed the pollution threshold in the soil samples, and the accumulation in plants did not meet the standard of worldwide averages. The phytoaccumulation of HMs was independent of the background concentration in soil but was related to plant tissues, which reflects the low mobility of HMs in the desert, and suggesting that the phytoaccumulation is related to the metabolic capacity and/or differential expression of HM-related genes in tissues of A. mongolicus. The high translocation efficiency of mercury from the underground portion to the leaves makes A. mongolicus a potential phytoremediator for mercury contamination. However, the removal efficiency in high-dose contamination soil still needs to be further examined. This study suggests that the desert environment may lack appropriate microorganisms to decompose immobile HMs effectively. In addition, when using A. mongolicus as a medicinal plant, special attention should be paid to the accumulation of HMs in different tissues, even if they have not reached the risk threshold.
类型	Article
语种	英语
国家	Peoples R China ; Taiwan
收录类别	SCI-E
WOS记录号	WOS:000527911900006
WOS关键词	ACCUMULATION ; PLANTS ; SOILS ; PHYTOREMEDIATION ; BIOAVAILABILITY ; MERCURY ; TESTS
WOS类目	Plant Sciences
WOS研究方向	Plant Sciences
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/315645
作者单位	1.Inner Mongolia Agr Univ, Coll Forestry, Hohhot 010019, Peoples R China; 2.Natl Taiwan Normal Univ, Sch Life Sci, 88 Ting Chow Rd,Sec 4, Taipei 116, Taiwan
推荐引用方式 GB/T 7714	Yang, Yong-Zhi,Gao, Run-Hong,Luo, Min-Xin,et al. Tissue-specific bioaccumulation of heavy metals in Ammopiptanthus mongolicus, the only evergreen shrub in the desert of Northwest China[J],2020,65(2):140-148.
APA	Yang, Yong-Zhi,Gao, Run-Hong,Luo, Min-Xin,Huang, Bing-Hong,&Liao, Pei-Chun.(2020).Tissue-specific bioaccumulation of heavy metals in Ammopiptanthus mongolicus, the only evergreen shrub in the desert of Northwest China.TAIWANIA,65(2),140-148.
MLA	Yang, Yong-Zhi,et al."Tissue-specific bioaccumulation of heavy metals in Ammopiptanthus mongolicus, the only evergreen shrub in the desert of Northwest China".TAIWANIA 65.2(2020):140-148.