Metal Transport in the Developing Plant Seed

2018-01-01
Healthy plant growth depends on a balanced metal homeostasis at the organ, tissue and sub-cellular levels, which is mediated principally by plasma and vacuolar membrane metal transporters. The genetic bases of metal acquisition in developing seeds has long remained poorly understood. Recent technical advances have helped circumvent the difficulties of conducting metal nutrient research on the extremely small seeds of Arabidopsis thaliana. The review presents recent advances in our understanding of seed metal homeostasis focussing on this model plant. Metals are loaded from phloem to the seed coat and must pass through the endosperm to reach the embryo. The embryo comprises several apoplastic and symplastic pathways that strictly depend on the changing physiology of the developing seed organs. Metals that reach the developing embryo fuel immediate cellular processes or accumulate in vacuoles to support forthcoming germination. In the mature embryo, metal distribution is homogeneous, with the exception of iron and manganese which localize to distinct cell layers. These metal localizations are strictly dependent on expression of specific tonoplast transporters, with putative functions that go beyond the storage of metals. Accumulating evidence indicates that they can control the timing of metal entry into the embryo.
MEMBRANE TRANSPORT IN PLANTS

Suggestions

MAGNESIUM FORTIFICATION IN CAKES BY USING DOUBLE EMULSIONS WITH LEGUME FLOURS
Kabakcı, Cansu; Şümnü, Servet Gülüm; Şahin, Serpil; Department of Food Engineering (2022-2-08)
Magnesium is a trace element that plays an important role in contraction and relaxation of muscles, enzymatic cellular reactions, production and transport of energy and protein synthesis. Magnesium fortification of food is necessary to prevent magnesium deficiency. However, magnesium addition in foods can induce chemical degradations, protein aggregation and results in unacceptable taste. In order to overcome these drawbacks, in this thesis, it was aimed to encapsulate magnesium by using water-oil-water dou...
Protein-Protein Interactions in Live Cells: Reinventing the Wheel
Son, Çağdaş Devrim (2018-12-13)
G protein-coupled receptors (GPCRs) are membrane proteins that mediate physiologicalresponse to a diverse array of stimuli. In humans, they mediate the action of hundreds ofpeptide hormones, sensory stimuli, odorants, neurotransmitters, and chemokines. GPCRs alsoare targets for ~40% of all currently marketed pharmaceuticals. These receptors traditionallybeen thought to act as monomeric units. However, recent evidence suggests that GPCRs mayform dimers as part of their normal trafficking and function. While ...
Heavy metal biosorption by white-rot fungi
Yetiş, Ülkü; Özcengiz, Gülay; Dilek, Filiz Bengü (1998-06-26)
In this study, heavy metal biosorption potentials of two white-rot fungi, Polyporous versicolor and Phanarochaete chrysosporium, which are commonly used in wastewater treatment were determined. Biosorption studies were performed for Cu(II), Cr(III), Cd(II), Ni(II) and Pb(II) at the same operational conditions and the effectiveness of both fungi at removing these heavy metals was compared. It was found that both P. versicolor and P. chrysosporium were the most effective in removing Pb(II) from aqeous solutio...
Social Capital of Social Capital Researchers
Akçomak, İbrahim Semih (2011-05-01)
Enhanced spatiotemporal selectivity in photonic sensitization of dissolved molecular oxygen is an important target for improving the potential and the practical applications of photodynamic therapy. Considering the high intracellular glutathione concentrations within cancer cells, a series of BODIPY-based sensitizers that can generate cytotoxic singlet oxygen only after glutathione-mediated cleavage of the electron-sink module were designed and synthesized. Cell culture studies not only validate our design,...
Labeling and optimization of organelle markers for co-localization with yeast GPCR dimers
Süder, İlke; Son, Çağdaş Devrim; Özen, Can; Department of Biotechnology (2013)
G-protein-coupled receptors, which are the most versatile chemical sensors, have prominent role in physiologically important cellular processes including cell growth and neurotransmission. Therefore, they are targeted by almost 50% of drugs in the market against diseases such as heart failure, neurological disorders and hypertension. It is well established phenomenon that GPCRs exist and function as dimers. Studies illustrate that dimerization may be favored for receptor activation, signal transduction, tra...
Citation Formats
S. Eroğlu, “Metal Transport in the Developing Plant Seed,” MEMBRANE TRANSPORT IN PLANTS, pp. 91–113, 2018, Accessed: 00, 2020. [Online]. Available: https://hdl.handle.net/11511/39046.