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Cadmium uptake in above-ground parts of lettuce (Lactuca sativa L.).
Ecotoxicol Environ Saf. 2016 Mar; 125:102-6.EE

Abstract

Because of its high Cd uptake and translocation, lettuce is often used in Cd contamination studies. However, there is a lack of information on Cd accumulation in the above-ground parts of lettuce during the entire growing season. In this study, a field experiment was carried out in a Cd-contaminated area. Above-ground lettuce parts were sampled, and the Cd content was measured using a flame atomic absorption spectrophotometer (AAS). The results showed that the Cd concentration in the above-ground parts of lettuce increased from 2.70 to 3.62mgkg(-1) during the seedling stage, but decreased from 3.62 to 2.40mgkg(-1) during organogenesis and from 2.40 to 1.64mgkg(-1) during bolting. The mean Cd concentration during the seedling stage was significantly higher than that during organogenesis (a=0.05) and bolting (a=0.01). The Cd accumulation in the above-ground parts of an individual lettuce plant could be described by a sigmoidal curve. Cadmium uptake during organogenesis was highest (80% of the total), whereas that during bolting was only 4.34%. This research further reveals that for Rome lettuce: (1) the highest Cd content of above-ground parts occurred at the end of the seedling phase; (2) the best harvest time with respect to Cd phytoaccumulation is at the end of the organogenesis stage; and (3) the organogenesis stage is the most suitable time to enhance phytoaccumulation efficiency by adjusting the root:shoot ratio.

Authors+Show Affiliations

College of Natural Resources and Environment, Northwest A&F University, Yangling 712100, China.College of Natural Resources and Environment, Northwest A&F University, Yangling 712100, China.College of Natural Resources and Environment, Northwest A&F University, Yangling 712100, China.College of Natural Resources and Environment, Northwest A&F University, Yangling 712100, China.College of Natural Resources and Environment, Northwest A&F University, Yangling 712100, China; College of Resources and Environment, Thu Dau Mot University, Binh Duong, Viet Nam.College of Natural Resources and Environment, Northwest A&F University, Yangling 712100, China. Electronic address: tongyanan@nwsuaf.edu.cn.

Pub Type(s)

Journal Article
Research Support, Non-U.S. Gov't

Language

eng

PubMed ID

26685781

Citation

Tang, Xiwang, et al. "Cadmium Uptake in Above-ground Parts of Lettuce (Lactuca Sativa L.)." Ecotoxicology and Environmental Safety, vol. 125, 2016, pp. 102-6.
Tang X, Pang Y, Ji P, et al. Cadmium uptake in above-ground parts of lettuce (Lactuca sativa L.). Ecotoxicol Environ Saf. 2016;125:102-6.
Tang, X., Pang, Y., Ji, P., Gao, P., Nguyen, T. H., & Tong, Y. (2016). Cadmium uptake in above-ground parts of lettuce (Lactuca sativa L.). Ecotoxicology and Environmental Safety, 125, 102-6. https://doi.org/10.1016/j.ecoenv.2015.11.033
Tang X, et al. Cadmium Uptake in Above-ground Parts of Lettuce (Lactuca Sativa L.). Ecotoxicol Environ Saf. 2016;125:102-6. PubMed PMID: 26685781.
* Article titles in AMA citation format should be in sentence-case
TY - JOUR T1 - Cadmium uptake in above-ground parts of lettuce (Lactuca sativa L.). AU - Tang,Xiwang, AU - Pang,Yan, AU - Ji,Puhui, AU - Gao,Pengcheng, AU - Nguyen,Thanh Hung, AU - Tong,Yan'an, Y1 - 2015/12/10/ PY - 2015/08/30/received PY - 2015/11/20/revised PY - 2015/11/24/accepted PY - 2015/12/22/entrez PY - 2015/12/22/pubmed PY - 2016/9/9/medline KW - Accumulation KW - Bio-indicator KW - Cadmium contamination KW - Growing stage KW - Lettuce SP - 102 EP - 6 JF - Ecotoxicology and environmental safety JO - Ecotoxicol Environ Saf VL - 125 N2 - Because of its high Cd uptake and translocation, lettuce is often used in Cd contamination studies. However, there is a lack of information on Cd accumulation in the above-ground parts of lettuce during the entire growing season. In this study, a field experiment was carried out in a Cd-contaminated area. Above-ground lettuce parts were sampled, and the Cd content was measured using a flame atomic absorption spectrophotometer (AAS). The results showed that the Cd concentration in the above-ground parts of lettuce increased from 2.70 to 3.62mgkg(-1) during the seedling stage, but decreased from 3.62 to 2.40mgkg(-1) during organogenesis and from 2.40 to 1.64mgkg(-1) during bolting. The mean Cd concentration during the seedling stage was significantly higher than that during organogenesis (a=0.05) and bolting (a=0.01). The Cd accumulation in the above-ground parts of an individual lettuce plant could be described by a sigmoidal curve. Cadmium uptake during organogenesis was highest (80% of the total), whereas that during bolting was only 4.34%. This research further reveals that for Rome lettuce: (1) the highest Cd content of above-ground parts occurred at the end of the seedling phase; (2) the best harvest time with respect to Cd phytoaccumulation is at the end of the organogenesis stage; and (3) the organogenesis stage is the most suitable time to enhance phytoaccumulation efficiency by adjusting the root:shoot ratio. SN - 1090-2414 UR - https://www.unboundmedicine.com/medline/citation/26685781/Cadmium_uptake_in_above_ground_parts_of_lettuce__Lactuca_sativa_L___ L2 - https://linkinghub.elsevier.com/retrieve/pii/S0147-6513(15)30180-9 DB - PRIME DP - Unbound Medicine ER -