Genotype variations in accumulation of cadmium and lead in celery (Apium graveolens L.) and screening for low Cd and Pb accumulative cultivars

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• 作者：Kun Zhang (1)
  Jianbing Wang (1)
  Zhongyi Yang (1)
  Guorong Xin (1)
  Jiangang Yuan (1)
  Junliang Xin (1)
  Charlie Huang (2)
  
• 关键词：cadmium (Cd) accumulation ; lead (Pb) accumulation ; celery ; genotype variation ; food safety
• 刊名：Frontiers of Environmental Science & Engineering
• 出版年：2013
• 出版时间：February 2013
• 年：2013
• 卷：7
• 期：1
• 页码：85-96
• 全文大小：459KB
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• 作者单位：Kun Zhang (1)
  Jianbing Wang (1)
  Zhongyi Yang (1)
  Guorong Xin (1)
  Jiangang Yuan (1)
  Junliang Xin (1)
  Charlie Huang (2)
  
  1. State Key Laboratory for Biocontrol, School of Life Sciences, Sun Yat-sen University, Guangzhou, 510275, China
  2. California Department of Fish and Game/OSPR/Scientific Division, Sacramento, CA, 94244-2090, USA
  
• ISSN：2095-221X

文摘

To help reduce risks of heavy metal pollution, two pot experiments were conducted to investigate the variations, transfer potential, and stability of Cadmium (Cd) and Lead (Pb) accumulations in celery (Apium graveolens L.) and to screen for low Cd and Pb accumulative cultivars. The maximum differences in shoot Cd concentration were 4.7-fold under low-Cd exposure and 3.3-fold under high-Cd exposure. These genotype variations in Cd accumulation are sufficiently large to help reduce Cd contamination risk in soil by using the Low-Cd-Accumulative genotypes. Cd accumulation of the Low-Cd-Accumulative genotypes is significantly positive correlated with Pb accumulation. Evidence obtained proves that Cd and Pb accumulations in celery are stable and genotype-dependent at the cultivar level. The presence of high-Pb contamination in soil promoted Cd accumulation in shoots of celery. Celery is considered a species with high risks in Cd pollution and low risks in Pb pollution. Among the tested cultivars, cv. Shuanggangkangbing (SGKB) had the lowest shoot Cd and Pb accumulating abilities, and thus is the most important material for breeding of pollution-safe cultivars (PSCs) to minimize Cd and Pb accumulations in celery.