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Identification of three relationships linking cadmium accumulation to cadmium tolerance and zinc and citrate accumulation in lettuce.
J Plant Physiol. 2010 Oct 15; 167(15):1239-47.JP

Abstract

Lettuce (Lactuca sativa) is a plant species that shows high accumulation of cadmium, a toxic heavy metal. Lettuce is therefore a good model both for identifying determinants controlling cadmium accumulation in plant tissues and for developing breeding strategies aimed at limiting cadmium accumulation in edible tissues. In this work, 14-day-old plants from three lettuce varieties were grown for 8 days on media supplemented with cadmium concentrations ranging from 0 to 50 microM. Growth, as well as Cd(2+), Zn(2+), K(+), Ca(2+), NO(3)(-), SO(4)(2-), Cl(-), phosphate, malate and citrate root an shoot contents were analyzed. The three lettuce varieties Paris Island Cos, Red Salad Bowl and Kordaat displayed differential abilities to accumulate cadmium in roots and shoots, Paris Island Cos displaying the lowest cadmium content and Kordaat the highest. From the global analysis of the three varieties, three main trends were identified. First, a common negative correlation linked cadmium tissue content and relative dry weight reduction in response to cadmium treatments in the three varieties. Second, increasing cadmium concentration in the culture medium resulted in a parallel increase in zinc tissue content in all lettuce varieties. A common strong positive correlation between cadmium and zinc contents was observed for all varieties. This suggested that systems enabling zinc and cadmium transport were induced by cadmium. Finally, the cadmium treatments had a contrasting effect on anion contents in tissues. Interestingly, citrate content in shoots was correlated with cadmium translocation from roots to shoots, suggesting that citrate might play a role in cadmium transport in the xylem vessels. Altogether, these results shed light on three main strategies developed by lettuce to cope with cadmium, which could help to develop breeding strategies aimed at limiting cadmium accumulation in lettuce.

Authors+Show Affiliations

Biochimie & Physiologie Moléculaire des Plantes, Unité Mixte de Recherche CNRS-INRA-Université Montpellier II-Montpellier SupAgro, Place Viala, 34060 Montpellier Cédex 2, France.No affiliation info availableNo affiliation info availableNo affiliation info availableNo affiliation info availableNo affiliation info available

Pub Type(s)

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

Language

eng

PubMed ID

20576318

Citation

Zorrig, Walid, et al. "Identification of Three Relationships Linking Cadmium Accumulation to Cadmium Tolerance and Zinc and Citrate Accumulation in Lettuce." Journal of Plant Physiology, vol. 167, no. 15, 2010, pp. 1239-47.
Zorrig W, Rouached A, Shahzad Z, et al. Identification of three relationships linking cadmium accumulation to cadmium tolerance and zinc and citrate accumulation in lettuce. J Plant Physiol. 2010;167(15):1239-47.
Zorrig, W., Rouached, A., Shahzad, Z., Abdelly, C., Davidian, J. C., & Berthomieu, P. (2010). Identification of three relationships linking cadmium accumulation to cadmium tolerance and zinc and citrate accumulation in lettuce. Journal of Plant Physiology, 167(15), 1239-47. https://doi.org/10.1016/j.jplph.2010.04.012
Zorrig W, et al. Identification of Three Relationships Linking Cadmium Accumulation to Cadmium Tolerance and Zinc and Citrate Accumulation in Lettuce. J Plant Physiol. 2010 Oct 15;167(15):1239-47. PubMed PMID: 20576318.
* Article titles in AMA citation format should be in sentence-case
TY - JOUR T1 - Identification of three relationships linking cadmium accumulation to cadmium tolerance and zinc and citrate accumulation in lettuce. AU - Zorrig,Walid, AU - Rouached,Aïda, AU - Shahzad,Zaigham, AU - Abdelly,Chedly, AU - Davidian,Jean-Claude, AU - Berthomieu,Pierre, Y1 - 2010/06/23/ PY - 2010/01/08/received PY - 2010/04/06/revised PY - 2010/04/15/accepted PY - 2010/6/26/entrez PY - 2010/6/26/pubmed PY - 2010/12/14/medline SP - 1239 EP - 47 JF - Journal of plant physiology JO - J Plant Physiol VL - 167 IS - 15 N2 - Lettuce (Lactuca sativa) is a plant species that shows high accumulation of cadmium, a toxic heavy metal. Lettuce is therefore a good model both for identifying determinants controlling cadmium accumulation in plant tissues and for developing breeding strategies aimed at limiting cadmium accumulation in edible tissues. In this work, 14-day-old plants from three lettuce varieties were grown for 8 days on media supplemented with cadmium concentrations ranging from 0 to 50 microM. Growth, as well as Cd(2+), Zn(2+), K(+), Ca(2+), NO(3)(-), SO(4)(2-), Cl(-), phosphate, malate and citrate root an shoot contents were analyzed. The three lettuce varieties Paris Island Cos, Red Salad Bowl and Kordaat displayed differential abilities to accumulate cadmium in roots and shoots, Paris Island Cos displaying the lowest cadmium content and Kordaat the highest. From the global analysis of the three varieties, three main trends were identified. First, a common negative correlation linked cadmium tissue content and relative dry weight reduction in response to cadmium treatments in the three varieties. Second, increasing cadmium concentration in the culture medium resulted in a parallel increase in zinc tissue content in all lettuce varieties. A common strong positive correlation between cadmium and zinc contents was observed for all varieties. This suggested that systems enabling zinc and cadmium transport were induced by cadmium. Finally, the cadmium treatments had a contrasting effect on anion contents in tissues. Interestingly, citrate content in shoots was correlated with cadmium translocation from roots to shoots, suggesting that citrate might play a role in cadmium transport in the xylem vessels. Altogether, these results shed light on three main strategies developed by lettuce to cope with cadmium, which could help to develop breeding strategies aimed at limiting cadmium accumulation in lettuce. SN - 1618-1328 UR - https://www.unboundmedicine.com/medline/citation/20576318/Identification_of_three_relationships_linking_cadmium_accumulation_to_cadmium_tolerance_and_zinc_and_citrate_accumulation_in_lettuce_ L2 - https://linkinghub.elsevier.com/retrieve/pii/S0176-1617(10)00230-0 DB - PRIME DP - Unbound Medicine ER -