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Modeling uptake kinetics of cadmium by field-grown lettuce.
Environ Pollut. 2008 Mar; 152(1):147-52.EP

Abstract

Cadmium uptake by field grown Romaine lettuce treated with P-fertilizers of different Cd levels was investigated over an entire growing season. Results indicated that the rate of Cd uptake at a given time of the season can be satisfactorily described by the Michaelis-Menten kinetics, that is, plant uptake increases as the Cd concentration in soil solution increases, and it gradually approaches a saturation level. However, the rate constant of the Michaelis-Menten kinetics changes over the growing season. Under a given soil Cd level, the cadmium content in plant tissue decreases exponentially with time. To account for the dynamic nature of Cd uptake, a kinetic model integrating the time factor was developed to simulate Cd plant uptake over the growing season: C Plant=C Solution.PUF max.exp[-b.t], where C Plant and C Solution refer to the Cd content in plant tissue and soil solution, respectively, PUF max and b are kinetic constants.

Authors+Show Affiliations

Department of Environmental Sciences, University of California, 900 University Avenue, Riverside, CA 92521, USA. chenweip@yahoo.com.cnNo affiliation info availableNo affiliation info availableNo affiliation info availableNo affiliation info availableNo affiliation info available

Pub Type(s)

Journal Article

Language

eng

PubMed ID

17583397

Citation

Chen, Weiping, et al. "Modeling Uptake Kinetics of Cadmium By Field-grown Lettuce." Environmental Pollution (Barking, Essex : 1987), vol. 152, no. 1, 2008, pp. 147-52.
Chen W, Li L, Chang AC, et al. Modeling uptake kinetics of cadmium by field-grown lettuce. Environ Pollut. 2008;152(1):147-52.
Chen, W., Li, L., Chang, A. C., Wu, L., Kwon, S. I., & Bottoms, R. (2008). Modeling uptake kinetics of cadmium by field-grown lettuce. Environmental Pollution (Barking, Essex : 1987), 152(1), 147-52.
Chen W, et al. Modeling Uptake Kinetics of Cadmium By Field-grown Lettuce. Environ Pollut. 2008;152(1):147-52. PubMed PMID: 17583397.
* Article titles in AMA citation format should be in sentence-case
TY - JOUR T1 - Modeling uptake kinetics of cadmium by field-grown lettuce. AU - Chen,Weiping, AU - Li,Lianqing, AU - Chang,Andrew C, AU - Wu,Laosheng, AU - Kwon,Soon-Ik, AU - Bottoms,Rick, Y1 - 2007/06/21/ PY - 2007/02/06/received PY - 2007/04/28/revised PY - 2007/05/03/accepted PY - 2007/6/23/pubmed PY - 2008/6/18/medline PY - 2007/6/23/entrez SP - 147 EP - 52 JF - Environmental pollution (Barking, Essex : 1987) JO - Environ Pollut VL - 152 IS - 1 N2 - Cadmium uptake by field grown Romaine lettuce treated with P-fertilizers of different Cd levels was investigated over an entire growing season. Results indicated that the rate of Cd uptake at a given time of the season can be satisfactorily described by the Michaelis-Menten kinetics, that is, plant uptake increases as the Cd concentration in soil solution increases, and it gradually approaches a saturation level. However, the rate constant of the Michaelis-Menten kinetics changes over the growing season. Under a given soil Cd level, the cadmium content in plant tissue decreases exponentially with time. To account for the dynamic nature of Cd uptake, a kinetic model integrating the time factor was developed to simulate Cd plant uptake over the growing season: C Plant=C Solution.PUF max.exp[-b.t], where C Plant and C Solution refer to the Cd content in plant tissue and soil solution, respectively, PUF max and b are kinetic constants. SN - 0269-7491 UR - https://www.unboundmedicine.com/medline/citation/17583397/Modeling_uptake_kinetics_of_cadmium_by_field_grown_lettuce_ L2 - https://linkinghub.elsevier.com/retrieve/pii/S0269-7491(07)00222-9 DB - PRIME DP - Unbound Medicine ER -