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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, Jihong1; Li, Yinxin; Li, Shizhong1
2016
发表期刊ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH
ISSN0944-1344
卷号23期号:18页码:18823-18831
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.
关键词Sweet sorghum Cadmium Phytoremediation Physiology Ultrastructure
学科领域Environmental Sciences
DOI10.1007/s11356-016-7083-5
收录类别SCI
语种英语
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)
WOS记录号WOS:000384435800086
出版者SPRINGER HEIDELBERG
文献子类Article
出版地HEIDELBERG
EISSN1614-7499
资助机构International Scientific and Technological Cooperation Program of the Ministry of Science and Technology of China [2013DFA60470]
作者邮箱yxli@ibcas.ac.cn ; szli@mail.tsinghua.edu.cn
引用统计
被引频次:39[WOS]   [WOS记录]     [WOS相关记录]
文献类型期刊论文
条目标识符http://ir.ibcas.ac.cn/handle/2S10CLM1/25344
专题中科院植物分子生理学重点实验室
作者单位1.Chinese Acad Sci, Inst Bot, Key Lab Plant Mol Physiol, Beijing 100093, Peoples R China
2.Tsinghua Univ, Beijing Engn Res Ctr Biofuels, Beijing 100084, Peoples R China
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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):18823-18831.
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),18823-18831.
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):18823-18831.
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