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Root uptake of lipophilic zinc-rhamnolipid complexes.
J Agric Food Chem. 2008 Mar 26; 56(6):2112-7.JA

Abstract

This study investigated the formation and plant uptake of lipophilic metal-rhamnolipid complexes. Monorhamnosyl and dirhamnosyl rhamnolipids formed lipophilic complexes with copper (Cu), manganese (Mn), and zinc (Zn). Rhamnolipids significantly increased Zn absorption by Brassica napus var. Pinnacle roots in (65)Zn-spiked ice-cold solutions, compared with ZnSO4 alone. Therefore, rhamnolipid appeared to facilitate Zn absorption via a nonmetabolically mediated pathway. Synchrotron XRF and XAS showed that Zn was present in roots as Zn-phytate-like compounds when roots were treated with Zn-free solutions, ZnSO4, or Zn-EDTA. With rhamnolipid application, Zn was predominantly found in roots as the Zn-rhamnolipid complex. When applied to a calcareous soil, rhamnolipids increased dry matter production and Zn concentrations in durum (Triticum durum L. cv. Balcali-2000) and bread wheat (Triticum aestivum L. cv. BDME-10) shoots. Rhamnolipids either increased total plant uptake of Zn from the soil or increased Zn translocation by reducing the prevalence of insoluble Zn-phytate-like compounds in roots.

Authors+Show Affiliations

Soil and Land Systems, School of Earth and Environmental Sciences, The University of Adelaide, PMB 1, Glen Osmond, SA 5064, Australia. samuel.stacey@adelaide.edu.auNo 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
Research Support, U.S. Gov't, Non-P.H.S.

Language

eng

PubMed ID

18303840

Citation

Stacey, Samuel P., et al. "Root Uptake of Lipophilic Zinc-rhamnolipid Complexes." Journal of Agricultural and Food Chemistry, vol. 56, no. 6, 2008, pp. 2112-7.
Stacey SP, McLaughlin MJ, Cakmak I, et al. Root uptake of lipophilic zinc-rhamnolipid complexes. J Agric Food Chem. 2008;56(6):2112-7.
Stacey, S. P., McLaughlin, M. J., Cakmak, I., Hettiarachchi, G. M., Scheckel, K. G., & Karkkainen, M. (2008). Root uptake of lipophilic zinc-rhamnolipid complexes. Journal of Agricultural and Food Chemistry, 56(6), 2112-7. https://doi.org/10.1021/jf0729311
Stacey SP, et al. Root Uptake of Lipophilic Zinc-rhamnolipid Complexes. J Agric Food Chem. 2008 Mar 26;56(6):2112-7. PubMed PMID: 18303840.
* Article titles in AMA citation format should be in sentence-case
TY - JOUR T1 - Root uptake of lipophilic zinc-rhamnolipid complexes. AU - Stacey,Samuel P, AU - McLaughlin,Michael J, AU - Cakmak,Ismail, AU - Hettiarachchi,Ganga M, AU - Scheckel,Kirk G, AU - Karkkainen,Michael, Y1 - 2008/02/28/ PY - 2008/2/29/pubmed PY - 2008/6/12/medline PY - 2008/2/29/entrez SP - 2112 EP - 7 JF - Journal of agricultural and food chemistry JO - J Agric Food Chem VL - 56 IS - 6 N2 - This study investigated the formation and plant uptake of lipophilic metal-rhamnolipid complexes. Monorhamnosyl and dirhamnosyl rhamnolipids formed lipophilic complexes with copper (Cu), manganese (Mn), and zinc (Zn). Rhamnolipids significantly increased Zn absorption by Brassica napus var. Pinnacle roots in (65)Zn-spiked ice-cold solutions, compared with ZnSO4 alone. Therefore, rhamnolipid appeared to facilitate Zn absorption via a nonmetabolically mediated pathway. Synchrotron XRF and XAS showed that Zn was present in roots as Zn-phytate-like compounds when roots were treated with Zn-free solutions, ZnSO4, or Zn-EDTA. With rhamnolipid application, Zn was predominantly found in roots as the Zn-rhamnolipid complex. When applied to a calcareous soil, rhamnolipids increased dry matter production and Zn concentrations in durum (Triticum durum L. cv. Balcali-2000) and bread wheat (Triticum aestivum L. cv. BDME-10) shoots. Rhamnolipids either increased total plant uptake of Zn from the soil or increased Zn translocation by reducing the prevalence of insoluble Zn-phytate-like compounds in roots. SN - 0021-8561 UR - https://www.unboundmedicine.com/medline/citation/18303840/Root_uptake_of_lipophilic_zinc_rhamnolipid_complexes_ DB - PRIME DP - Unbound Medicine ER -