Cadmium accumulation in relation to organic acids in leaves of Solanum nigrum L. as a newly found cadmium hyperaccumulator

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	Cadmium accumulation in relation to organic acids in leaves of Solanum nigrum L. as a newly found cadmium hyperaccumulator
	Jin, CX; Sun, RL; Zhou, QX; Zhou, QX, Nankai Univ, Coll Environm Sci & Engn, Tianjin 300071, Peoples R China
刊名	PLANT AND SOIL
	2006
卷号	285 期号:1-2 页码:125-134
关键词	Cadmium Hyperaccumulation Organic Acid Phytoremediation Solanum Nigrum Solanum Melongena Tolerance
ISSN号	0032-079X
英文摘要	The influence of various cadmium concentrations on organic acid levels in leaves of the Cd hyperaccumulator, Solanum nigrum L. and a closely related species, Solanum melongena L., were investigated. In particular, the relationship of organic acids with Cd accumulation in the two plants was investigated. The results showed that Cd accumulation in the shoots of S. nigrum was significantly higher than that of S. melongena. The accumulation of Cd in the leaves of S. nigrum ranged from 2.0 to 167.8 mu g g(-1) dry weight (DW), but only from 1.2 to 64.0 mu g g(-1) DW in S. melongena. Solanum melongena was considerably less tolerant to Cd than S. nigrum. Approximately 20% of the total Cd in S. nigrum leaves was water-soluble, suggesting that some accumulated Cd was associated with water-soluble compounds such as organic acids. Malic acid in the leaves of S. nigrum was the most abundant organic acid [up to 115.6-145.7 mu mol g(-1) fresh weight (FW)], but this acid was not significantly affected by the Cd concentration in soil. However, the level of malic acid in S. melongena plants was much lower, only 16.3-75.4 mu mol g(-1) FW. The significant positive correlations between total Cd and water-soluble Cd concentrations and both acetic and citric acid concentrations in the leaves of S. nigrum were observed. In contrast, there was no correlation between concentrations of the two acids and Cd concentrations in the leaves of S. melongena. These results indicated that acetic and citric acids in the leaves of S. nigrum might be related to its Cd hyperaccumulation.
学科主题	Agronomy ; Plant Sciences ; Soil Science
语种	英语
WOS记录号	WOS:000240532200011
公开日期	2011-09-23
内容类型	期刊论文
源URL	[http://210.72.129.5/handle/321005/54855]
专题	沈阳应用生态研究所_沈阳应用生态研究所
通讯作者	Zhou, QX, Nankai Univ, Coll Environm Sci & Engn, Tianjin 300071, Peoples R China
推荐引用方式 GB/T 7714	Jin, CX,Sun, RL,Zhou, QX,et al. Cadmium accumulation in relation to organic acids in leaves of Solanum nigrum L. as a newly found cadmium hyperaccumulator[J]. PLANT AND SOIL,2006,285(1-2):125-134.
APA	Jin, CX,Sun, RL,Zhou, QX,&Zhou, QX, Nankai Univ, Coll Environm Sci & Engn, Tianjin 300071, Peoples R China.(2006).Cadmium accumulation in relation to organic acids in leaves of Solanum nigrum L. as a newly found cadmium hyperaccumulator.PLANT AND SOIL,285(1-2),125-134.
MLA	Jin, CX,et al."Cadmium accumulation in relation to organic acids in leaves of Solanum nigrum L. as a newly found cadmium hyperaccumulator".PLANT AND SOIL 285.1-2(2006):125-134.