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Cadmium and zinc partitioning and accumulation during grain filling in two near isogenic lines of durum wheat.
Plant Physiol Biochem. 2015 Dec; 97:461-9.PP

Abstract

Plants can readily accumulate cadmium (Cd), transferring this element to edible leaves, fruits, and seeds. Rice and wheat are among the top crop sources of Cd. Toxic heavy metals like Cd have chemical properties similar to essential micronutrients such as zinc (Zn) and are generally transported in plants by the same transporters as those essential micronutrients. Unfortunately our knowledge of Cd translocation and accumulation in seeds is still unclear. We conducted a partitioning study to assess both the whole plant Cd distribution and accumulation and potential source-sink remobilization during grain filling period in two near-isogenic lines of durum wheat that differ in root to shoot translocation and grain Cd content. We also assessed the role of Zn fertilization in Cd translocation and accumulation in the grains. There was no remobilization of Cd in both lines during grain filling. Although majority of Cd partitioned to the roots in both lines, root to shoot translocation of Cd differed in both lines. In contrast, there were no significant differences in Zn partitioning between the lines and remobilization was observed in different tissues. Although there was some remobilization of Zn, the main source of Cd and Zn is continued uptake and translocation to sources during grain fill.

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Publisher Full Text (DOI)

Authors+Show Affiliations

Tavarez M
Department of Biological Sciences, Lehman College, City University of New York, 250 Bedford Park Blvd. West, Bronx, NY 10468, USA; The Graduate School and University Center-CUNY, 365 Fifth Ave., New York, NY 10016-4309, USA.
Macri A
Department of Biological Sciences, Lehman College, City University of New York, 250 Bedford Park Blvd. West, Bronx, NY 10468, USA.
Sankaran RP
Department of Biological Sciences, Lehman College, City University of New York, 250 Bedford Park Blvd. West, Bronx, NY 10468, USA; The Graduate School and University Center-CUNY, 365 Fifth Ave., New York, NY 10016-4309, USA. Electronic address: renuka.sankaran@lehman.cuny.edu.

MeSH

BiomassCadmiumOrgan SpecificityPlant LeavesPlant RootsPlant ShootsSeedsTriticumZinc

Pub Type(s)

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

Language

eng

PubMed ID

26581046

Citation

Tavarez, Michael, et al. "Cadmium and Zinc Partitioning and Accumulation During Grain Filling in Two Near Isogenic Lines of Durum Wheat." Plant Physiology and Biochemistry : PPB, vol. 97, 2015, pp. 461-9.
Tavarez M, Macri A, Sankaran RP. Cadmium and zinc partitioning and accumulation during grain filling in two near isogenic lines of durum wheat. Plant Physiol Biochem. 2015;97:461-9.
Tavarez, M., Macri, A., & Sankaran, R. P. (2015). Cadmium and zinc partitioning and accumulation during grain filling in two near isogenic lines of durum wheat. Plant Physiology and Biochemistry : PPB, 97, 461-9. https://doi.org/10.1016/j.plaphy.2015.10.024
Tavarez M, Macri A, Sankaran RP. Cadmium and Zinc Partitioning and Accumulation During Grain Filling in Two Near Isogenic Lines of Durum Wheat. Plant Physiol Biochem. 2015;97:461-9. PubMed PMID: 26581046.
* Article titles in AMA citation format should be in sentence-case
TY - JOUR T1 - Cadmium and zinc partitioning and accumulation during grain filling in two near isogenic lines of durum wheat. AU - Tavarez,Michael, AU - Macri,Annarita, AU - Sankaran,Renuka P, Y1 - 2015/10/28/ PY - 2015/07/27/received PY - 2015/10/19/revised PY - 2015/10/19/accepted PY - 2015/11/19/entrez PY - 2015/11/19/pubmed PY - 2017/1/10/medline KW - Cadmium–zinc interactions KW - Continuous uptake KW - Grains KW - Remobilization SP - 461 EP - 9 JF - Plant physiology and biochemistry : PPB JO - Plant Physiol Biochem VL - 97 N2 - Plants can readily accumulate cadmium (Cd), transferring this element to edible leaves, fruits, and seeds. Rice and wheat are among the top crop sources of Cd. Toxic heavy metals like Cd have chemical properties similar to essential micronutrients such as zinc (Zn) and are generally transported in plants by the same transporters as those essential micronutrients. Unfortunately our knowledge of Cd translocation and accumulation in seeds is still unclear. We conducted a partitioning study to assess both the whole plant Cd distribution and accumulation and potential source-sink remobilization during grain filling period in two near-isogenic lines of durum wheat that differ in root to shoot translocation and grain Cd content. We also assessed the role of Zn fertilization in Cd translocation and accumulation in the grains. There was no remobilization of Cd in both lines during grain filling. Although majority of Cd partitioned to the roots in both lines, root to shoot translocation of Cd differed in both lines. In contrast, there were no significant differences in Zn partitioning between the lines and remobilization was observed in different tissues. Although there was some remobilization of Zn, the main source of Cd and Zn is continued uptake and translocation to sources during grain fill. SN - 1873-2690 UR - https://www.unboundmedicine.com/medline/citation/26581046/Cadmium_and_zinc_partitioning_and_accumulation_during_grain_filling_in_two_near_isogenic_lines_of_durum_wheat_ DB - PRIME DP - Unbound Medicine ER -