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Comparison of cadmium subcellular distribution in different organs of two water spinach (Ipomoea aquatica Forsk.) cultivars

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WOS被引频次:25
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成果类型:
期刊论文
作者:
Xin, Junliang;Huang, Baifei;Yang, Zhongyi;Yuan, Jiangang;Zhang, Yadong
通讯作者:
Yang, ZY
作者机构:
[Huang, Baifei; Yang, Zhongyi; Xin, Junliang; Zhang, Yadong; Yuan, Jiangang] Sun Yat Sen Univ, Sch Life Sci, State Key Lab Biocontrol, Guangzhou 510275, Guangdong, Peoples R China.
[Huang, Baifei; Xin, Junliang] Hunan Inst Technol, Dept Safety & Environm Engn, Hengyang 421002, Peoples R China.
通讯机构:
[Yang, ZY] Sun Yat Sen Univ, Sch Life Sci, State Key Lab Biocontrol, Guangzhou 510275, Guangdong, Peoples R China.
语种:
英文
关键词:
Cadmium;Subcellular distribution;Water spinach (Ipomoea aquatica Forsk.);Pollution-safe cultivar (PSC)
期刊:
PLANT AND SOIL
ISSN:
0032-079X
年:
2013
卷:
372
期:
1-2
页码:
431-444
文献类别:
WOS:Article
所属学科:
ESI学科类别:农业科学;WOS学科类别:Agronomy;Plant Sciences;Soil Science
入藏号:
基金类别:
National Natural Science Foundation of China [20877104, 21277178]; Natural Science Foundation of Guangdong Province, China [021686]
机构署名:
本校为其他机构
院系归属:
安全与环境工程学院
摘要:
Mechanisms of low cadmium (Cd) accumulations in cultivars of water spinach are poorly investigated. We aimed to improve understanding of the subcellular biochemical properties of the mechanisms involved. A pot experiment was conducted to investigate the subcellular distributions of Cd in lateral and main roots, stems, and young and old leaves of a high-Cd (T308) and a low-Cd cultivar (QLQ). The ratio of main root:lateral roots Cd concentration in QLQ was lower (0.34-0.35) than that in T308 (0.39-0.55). The ratio of stem:main root Cd concentration in QLQ was much lower (0.60-0.73) than that in T308 (1.19-1.58). QLQ has higher capacity to sequester Cd in cell wall fractions of main and lateral roots than T308. The difference in shoot Cd concentration between QLQ and T308 is attributable to the difference in Cd translocation from lateral to main roots and from roots to the stem. Fixation of large amounts of Cd in old leaves is beneficial to protect young leaves from Cd toxicity. Cadmium immobilization by the cell wall is important in Cd detoxification, especially in main and lateral roots of QLQ and the shoot of T308.
参考文献:
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Ramos I, 2002, PLANT SCI, V162, P761, DOI 10.1016/S0168-9452(02)00017-1
VOGELILANGE R, 1990, PLANT PHYSIOL, V92, P1086, DOI 10.1104/pp.92.4.1086
Xin JL, 2010, J HAZARD MATER, V175, P468, DOI 10.1016/j.jhazmat.2009.10.029

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