Morphophysiological characteristic analysis demonstrated the potential of sweet sorghum (Sorghum bicolor (L.) Moench) in the phytoremediation of cadmium-contaminated soils

doi:10.1007/s11356-016-7083-5

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	Morphophysiological characteristic analysis demonstrated the potential of sweet sorghum (Sorghum bicolor (L.) Moench) in the phytoremediation of cadmium-contaminated soils
	Jia, Weitao ; Lv, Sulian ; Feng, Juanjuan ; Li, Jihong 2; Li, Yinxin ; Li, Shizhong 2
刊名	ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH
	2016
卷号	23 期号:18
关键词	Sweet sorghum Cadmium Phytoremediation Physiology Ultrastructure
ISSN号	0944-1344
DOI	10.1007/s11356-016-7083-5
文献子类	Article
英文摘要	Cadmium (Cd) contamination is a worldwide environmental problem, and remediation of Cd pollution is of great significance for food production as well as human health. Here, the responses of sweet sorghum cv. 'M-81E' to cadmium stress were studied for its potential as an energy plant in restoring soils contaminated by cadmium. In hydroponic experiments, the biomass of 'M-81E' showed no obvious change under 10 mu M cadmium treatment. Cadmium concentration was the highest in roots of seedlings as well as mature plants, but in agricultural practice, the valuable and harvested parts of sweet sorghum are shoots, so promoting the translocation of cadmium to shoots is of great importance in order to improve its phytoremediation capacity. Further histochemical assays with dithizone staining revealed that cadmium was mainly concentrated in the stele of roots and scattered in intercellular space of caulicles. Moreover, the correlation analysis showed that Cd had a negative relationship with iron (Fe), zinc (Zn), and manganese (Mn) in caulicles and leaves and a positive relationship with Fe in roots. These results implied that cadmium might compete with Fe, Zn, and Mn for the transport binding sites and further prevent their translocation to shoots. In addition, transmission electron microscopic observations showed that under 100 mu M cadmium treatment, the structure of chloroplast was impaired and the cell wall of vascular bundle cells in leaves and xylem and phloem cells in roots turned thicker compared to control. In summary, morphophysiological characteristic analysis demonstrated sweet sorghum can absorb cadmium and the growth is not negatively affected by mild level cadmium stress; thus, it is a promising material for the phytoremediation of cadmium-contaminated soils considering its economic benefit. This study also points out potential strategies to improve the phytoremediation capacity of sweet sorghum through genetic modification of transporters and cell wall components.
学科主题	Environmental Sciences
电子版国际标准刊号	1614-7499
出版地	HEIDELBERG
WOS关键词	HYPERACCUMULATOR THLASPI-CAERULESCENS ; CELL-WALL ; ARABIDOPSIS-THALIANA ; PLANT-GROWTH ; ACCUMULATION ; TOLERANCE ; ZINC ; ROOT ; RESPONSES ; STRESS
WOS研究方向	Science Citation Index Expanded (SCI-EXPANDED)
语种	英语
出版者	SPRINGER HEIDELBERG
WOS记录号	WOS:000384435800086
资助机构	International Scientific and Technological Cooperation Program of the Ministry of Science and Technology of China [2013DFA60470]
内容类型	期刊论文
源URL	[http://ir.ibcas.ac.cn/handle/2S10CLM1/24696]
专题	中科院植物分子生理学重点实验室
作者单位	1.Tsinghua Univ, Beijing Engn Res Ctr Biofuels, Beijing 100084, Peoples R China 2.Chinese Acad Sci, Inst Bot, Key Lab Plant Mol Physiol, Beijing 100093, Peoples R China
推荐引用方式 GB/T 7714	Jia, Weitao,Lv, Sulian,Feng, Juanjuan,et al. Morphophysiological characteristic analysis demonstrated the potential of sweet sorghum (Sorghum bicolor (L.) Moench) in the phytoremediation of cadmium-contaminated soils[J]. ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH,2016,23(18).
APA	Jia, Weitao,Lv, Sulian,Feng, Juanjuan,Li, Jihong,Li, Yinxin,&Li, Shizhong.(2016).Morphophysiological characteristic analysis demonstrated the potential of sweet sorghum (Sorghum bicolor (L.) Moench) in the phytoremediation of cadmium-contaminated soils.ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH,23(18).
MLA	Jia, Weitao,et al."Morphophysiological characteristic analysis demonstrated the potential of sweet sorghum (Sorghum bicolor (L.) Moench) in the phytoremediation of cadmium-contaminated soils".ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH 23.18(2016).