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Metal ligands in micronutrient acquisition and homeostasis

DOI zum Zitieren der Version auf EPub Bayreuth:
URN to cite this document: urn:nbn:de:bvb:703-epub-5006-1

Title data

Clemens, Stephan:
Metal ligands in micronutrient acquisition and homeostasis.
In: Plant, Cell & Environment. Vol. 42 (27 July 2019) Issue 10 . - pp. 2902-2912.
ISSN 1365-3040
DOI der Verlagsversion:

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Project information

Project title:
Project's official title
Project's id
Aufnahme, Akkumulation und Metabolismus von Thioarsenaten in Pflanzen
Cl 152/11‐1

Project financing: Deutsche Forschungsgemeinschaft


Acquisition and homeostasis of micronutrients such as iron (Fe) and zinc (Zn) pose specific challenges. Poor solubility and high reactivity require controlled synthesis and supply of ligands to complex these metals extracellularly and intracellularly. Cytosolic labile pools represent only a minute fraction of the total cellular content. Several low-molecular-weight ligands are known in plants, including sulfur ligands (cysteine and peptides), nitrogen/oxygen ligands (S-adenosyl-l-methionine-derived molecules and histidine), and oxygen ligands (phenolics and organic acids). Some ligands are secreted into the extracellular space and influence the phytoavailability of metal ions. A second principal function is the intracellular buffering of micronutrients as well as the facilitation of long-distance transport in xylem and phloem. Furthermore, low-molecular-weight ligands are involved in the storage of metals, predominantly in vacuoles. A detailed molecular understanding is hampered by technical limitations, in particular the difficulty to detect and quantify cellular metal-ligand complexes. More, but still too little, is known about ligand synthesis and the transport across membranes, either with or without a complexed metal. Metal ligands have an immediate impact on human well-being. Engineering metal ligand synthesis and distribution in crops has tremendous potential to improve the nutritional quality of food and to tackle major human health risks.

Further data

Item Type: Article in a journal
Additional notes (visible to public): BAYCEER152811
Keywords: Heavy metals; Intermediary metabolism; Plant nutrition
DDC Subjects: 500 Science
500 Science > 570 Life sciences, biology
500 Science > 580 Plants (Botany)
Institutions of the University: Faculties
Faculties > Faculty of Biology, Chemistry and Earth Sciences
Faculties > Faculty of Biology, Chemistry and Earth Sciences > Department of Biology
Faculties > Faculty of Biology, Chemistry and Earth Sciences > Department of Biology > Chair Plant Physiology
Faculties > Faculty of Biology, Chemistry and Earth Sciences > Department of Biology > Chair Plant Physiology > Chair Plant Physiology - Univ.-Prof. Dr. Stephan Clemens
Research Institutions
Research Institutions > Research Centres
Research Institutions > Research Centres > Bayreuth Center of Ecology and Environmental Research- BayCEER
Language: English
Originates at UBT: Yes
URN: urn:nbn:de:bvb:703-epub-5006-1
Date Deposited: 14 Aug 2020 08:21
Last Modified: 14 Aug 2020 08:21


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