Untitled

Rengel, Zed; Römheld, Volker

doi:10.1023/a:1004799027861

Cited by 79 publications

(10 citation statements)

References 24 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…ex A.Camus), and rye (Secale cereale L.) (Zhang et al 1989;Cakmak et al 1994;Gries et al 1995;Cakmak et al 1996;Erenoglu et al 1996;Cakmak et al 1998a;Cakmak et al 1998b;Rengel 1999;Erenoglu et al 2000;Suzuki et al 2006), which reverts to control levels within 72 hours after Zn is resupplied (Zhang et al 1989). Moreover, many Zn-efficient varieties of wheat, barley, and rice have shown higher PS release rate during Zn-deficiency than the inefficient ones (Cakmak et al 1994;Cakmak et al 1996;Cakmak et al 1998a;Rengel et al 1998;Rengel and Römheld 2000;Erenoglu et al 2000;Tolay et al 2001;Widodo et al 2010;Neelam et al 2010;Daneshbakhsh et al 2013). In contrast, analogous experiments found no significant difference in PS release in Zn-deficient rice, wheat, and barley (Pedler et al 2000;Suzuki et al 2008;Widodo et al 2010), or between Zn-efficient and inefficient wheat and barley (Erenoglu et al 1996;Cakmak et al 1998b;Pedler et al 2000).…”

Section: Low-and High-affinity Transport Phenomenamentioning

confidence: 99%

Zinc Homeostasis and isotopic fractionation in plants: a review

2016

View full text Add to dashboard Cite

Aims Recent advances in mass spectrometry have demonstrated that higher plants discriminate stable Zn isotopes during uptake and translocation depending on environmental conditions and physiological status of the plant. Stable Zn isotopes have emerged as a promising tool to characterize the plants response to inadequate Zn supply. The aim of this review is to build a comprehensive model linking Zn homeostasis and Zn isotopic fractionation in plants and advance our current view of Zn homeostasis and interaction with other micronutrients. Methods The distribution of stable Zn isotopes in plants and the most likely causes of fractionation are reviewed, and the interactions with micronutrients Fe, Cu, and Ni are discussed. Results The main sources of Zn fractionation in plants are i) adsorption, ii) low- and high-affinity transport phenomena, iii) speciation, iv) compartmentalization, and v) diffusion. We propose a model for Zn fractionation during uptake and radial transport in the roots, root-to-shoot transport, and remobilization. Conclusions Future work should concentrate on better understanding the molecular mechanisms underlying the fractionations as this will be the key to future development of this novel isotope system. A combination of stable isotopes and speciation analyses might prove a powerful tool for plant nutrition and homeostasis studies

show abstract

Section: Low-and High-affinity Transport Phenomenamentioning

confidence: 99%

Zinc Homeostasis and isotopic fractionation in plants: a review

2016

View full text Add to dashboard Cite

show abstract

“…Bezostaya) were grown in hydroponic culture following the procedure described by Rengel and Römheld [35]. Shoot and roots were harvested separately, rinsed with ultrapure water, blotted dry between paper towels, and squeezed in a hydraulic press.…”

Section: Ps Metal-ps Standards and Plant Samplesmentioning

confidence: 99%

Hydrophilic interaction chromatography of small metal species in plants using sulfobetaine‐ and phosphorylcholine‐type zwitterionic stationary phases

Weber

Wirén

Hayen

2008

J of Separation Science

View full text Add to dashboard Cite

Hydrophilic interaction chromatography (HILIC) was applied for the separation of small, noncovalent metal species, and free ligands in plants, using two different zwitterionic stationary phases at pH 7.3. Ligands ranged from amino acids and phytosiderophores to organic acids and synthetic chelators like EDTA. Our results confirmed the suitability of zwitterionic stationary phases for the separation of such ligands and their metal complexes. In particular, the chromatographic behavior of phytosiderophore complexes of copper, nickel, and zinc on a sulfobetaine-type material was compared to that on a phosphorylcholine-type material under otherwise identical conditions. A compression of the usable retention range for phytosiderophore species on the latter phase was found, which can be traced back to the reversed charge orientation of the zwitterionic functionalities. Differences were also found for the integrity of more labile metal chelates during separation on the two columns. In particular, Ni-malate could only be analyzed on the sulfobetaine phase, and Cu-glutathione, Ni-aspartate, and Ni-citrate complexes were only stable on the phosphorylcholine stationary phase at pH 7.3. Ni-histidine species were only found after lowering the pH to 4-5. The identification of separated species is possible by online ESI-MS in the negative ionization mode.

show abstract

“…Bezostaya) were grown in hydroponic culture following the procedure described by Rengel and Römheld [31]. Shoots and roots were harvested separately, rinsed with ultrapure water, blotted dry between paper towels and squeezed in a hydraulic press.…”

Section: Plant Samplesmentioning

confidence: 99%

CE of phytosiderophores and related metal species in plants

et al. 2007

View full text Add to dashboard Cite

Phytosiderophores (PS) and the closely related substance nicotianamine (NA) are key substances in metal uptake into graminaceous plants. Here, the CE separation of these substances and related metal species is demonstrated. In particular, the three PS 2'-deoxymugineic acid (DMA), mugineic acid (MA), and 3-epi-hydroxymugineic acid (epi-HMA), and NA, are separated using MES/Tris buffer at pH 7.3. Moreover, three Fe(III) species of the different PS are separated without any stability problems, which are often present in chromatographic analyses. Also divalent metal species of Cu, Ni, and Zn with the ligands DMA and NA are separated with the same method. By using a special, zwitterionic CE capillary, even the separation of two isomeric Fe(III) chelates with the ligand ethylenediamine-N,N'-bis(o-hydroxyphenyl)acetic acid (EDDHA) is possible (i.e., meso-Fe(III)-EDDHA and rac-Fe(III)-EDDHA), and for fast separations of NA and respective divalent and trivalent metal species, a polymer CE microchip with suppressed EOF is described. The proposed CE method is applicable to real plant samples, and enables to detect changes of metal species (Cu-DMA, Ni-NA), which are directly correlated to biological processes.

show abstract

Untitled

Cited by 79 publications

References 24 publications

Zinc Homeostasis and isotopic fractionation in plants: a review

Zinc Homeostasis and isotopic fractionation in plants: a review

Hydrophilic interaction chromatography of small metal species in plants using sulfobetaine‐ and phosphorylcholine‐type zwitterionic stationary phases

CE of phytosiderophores and related metal species in plants

Contact Info

Product

Resources

About