Vitronectin-like protein is a first line of defense against lanthanum (III) stress in Arabidopsis leaf cells

Yang, Qing; Wang, Lihong; He, Jun; Li, Xiaodong; Tong, Wenjun; Yang, Zhenbiao; Zhou, Qing; Huang, Xiaohua

doi:10.1016/j.envexpbot.2016.05.011

Cited by 22 publications

(5 citation statements)

References 60 publications

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“…The present study found that the semi-permeable layer of switchgrass was stained yellow with aniline blue [39], which demonstrated that its main chemical composition should be suberin. Quantum chemical calculations can provide information at the molecular level, and many studies [40] demonstrate that metal ions can be bound to chemical components of seed by coordinate covalent bonds or H-bonds. Based upon the suberin macromolecular structure proposed by Graca and Santos [20], our quantum chemical calculations suggest that the suberin molecule had a layered structure, and [La(H 2 O) 8 ] 3+ could not penetrate it because the intervals between adjacent carbon chains were very small.…”

Section: Discussionmentioning

confidence: 99%

The mechanism behind lack-of-effect of lanthanum on seed germination of switchgrass

2019

PLoS ONE

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Switchgrass ( Panicum virgatum L.) is a perennial warm-season C 4 grass identified as a model species for bioenergy feedstock production. Lanthanum (La) as a rare earth element can stimulate the physiological processes of plant growth. The purpose of this study was to investigate the effect of lanthanum on seed germination of switchgrass. However, no significant differences in seed germination were found. The energy dispersive X-ray analysis showed that abundant lanthanum deposits resided on the pericarp and testa of the seed while few lanthanum deposits were present on the aleurone and endosperm. This phenomenon demonstrates that a semi-permeable layer, which could restrict or impede solute exchange, while allowing the permeability of internal and external water and gas, may be located between the testa and aleurone. Light microscopy and histochemical analysis revealed that the main chemical composition of the semi-permeable layer would be expected to be suberin because the layer was stained yellow with aniline blue. The quantum chemical calculations predict that the intervals between adjacent carbon chains in suberin molecule are so small that lanthanum ([La(H 2 O) 8 ] 3+ ) cannot pass through the suberin molecule. In conclusion, the seed germination of switchgrass is not affected by lanthanum because the semi-permeable layer restricts the penetration of lanthanum into the embryo.

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Section: Discussionmentioning

confidence: 99%

The mechanism behind lack-of-effect of lanthanum on seed germination of switchgrass

2019

PLoS ONE

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“…(Guo et al, 1996 ), and a REE-binding peptide also from coral fern (Wang et al, 2003 ). Recent studies showed that REEs lanthanum and terbium can activate plant endocytosis and their entrance to cells by endocytosis (Wang et al, 2014 , 2016 ; Yang et al, 2016 ). REEs in soil solutions and their contents in plant tissues are much lower than Ti (Tyler, 2004 ).…”

Section: Ti Translocation In Plantsmentioning

confidence: 99%

Titanium as a Beneficial Element for Crop Production

et al. 2017

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Titanium (Ti) is considered a beneficial element for plant growth. Ti applied via roots or leaves at low concentrations has been documented to improve crop performance through stimulating the activity of certain enzymes, enhancing chlorophyll content and photosynthesis, promoting nutrient uptake, strengthening stress tolerance, and improving crop yield and quality. Commercial fertilizers containing Ti, such as Tytanit and Mg-Titanit, have been used as biostimulants for improving crop production; however, mechanisms underlying the beneficial effects still remain unclear. In this article, we propose that the beneficial roles Ti plays in plants lie in its interaction with other nutrient elements primarily iron (Fe). Fe and Ti have synergistic and antagonistic relationships. When plants experience Fe deficiency, Ti helps induce the expression of genes related to Fe acquisition, thereby enhancing Fe uptake and utilization and subsequently improving plant growth. Plants may have proteins that either specifically or nonspecifically bind with Ti. When Ti concentration is high in plants, Ti competes with Fe for ligands or proteins. The competition could be severe, resulting in Ti phytotoxicity. As a result, the beneficial effects of Ti become more pronounced during the time when plants experience low or deficient Fe supply.

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“…Lanthanum is first anchored on the plasma membrane in the form of nanoscale particles (Wang et al, 2014 ). Importantly, vitronectin-like protein (VN) is an anchoring site and binding target for La found on the plasma membrane of Arabidopsis leaf cells, and VN may act as a defense mechanism to resist the entry of La into plant cells (Yang et al, 2016 ). Once anchored on the plasma membrane, La may enter the cell by endocytosis, and a portion of it is released into the cytoplasm, self-assembled, and formed into nanoscale clusters.…”

Section: Introductionmentioning

confidence: 99%

Lanthanum Affects Bell Pepper Seedling Quality Depending on the Genotype and Time of Exposure by Differentially Modifying Plant Height, Stem Diameter and Concentrations of Chlorophylls, Sugars, Amino Acids, and Proteins

et al. 2017

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Lanthanum (La) is considered a beneficial element, capable of inducing hormesis. Hormesis is a dose-response relationship phenomenon characterized by low-dose stimulation and high-dose inhibition. Herein we tested the effect of 0 and 10 μM La on growth and biomolecule concentrations of seedlings of four sweet bell pepper (Capsicum annuum L.) varieties, namely Sven, Sympathy, Yolo Wonder, and Zidenka. Seedling evaluations were performed 15 and 30 days after treatment applications (dat) under hydroponic greenhouse conditions. Seedling height was significantly increased by La, growing 20% taller in Yolo Wonder plants, in comparison to the control. Similarly, La significantly enhanced shoot diameter, with increases of 9 and 9.8% in measurements performed 15 and 30 dat, respectively, as compared to the control. Likewise, La-treated seedlings had a higher number of flower buds than the control. An increase in the number of leaves because of La application was observed in Yolo Wonder seedlings, both 15 and 30 dat, while leaf area was augmented in this variety only 30 dat. Nevertheless, La did not affect dry biomass accumulation. La effects on biomolecule concentration were differential over time. In all varieties, La stimulated the biosynthesis of chlorophyll a, b and total 15 dat, though 30 dat only the varieties Sympathy and Yolo Wonder showed enhanced concentrations of these molecules because of La. Total soluble sugars increased in La-treated seedlings 30 dat. Interestingly, while most varieties exposed to La showed a reduction in amino acid concentration 15 dat, the opposite trend was observed 30 dat. Importantly, in all varieties evaluated, La stimulated soluble protein concentration 30 dat. It is important to note that while chlorophyll concentrations increased in all varieties exposed to La, both 15 and 30 dat, those of soluble sugars and proteins consistently increased only 30 dat, but not 15 dat. Our results confirm that La may improve seedling quality by enhancing some growth parameters and biomolecule concentrations, depending on the genotype, and time of exposure.

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Vitronectin-like protein is a first line of defense against lanthanum (III) stress in Arabidopsis leaf cells

Cited by 22 publications

References 60 publications

The mechanism behind lack-of-effect of lanthanum on seed germination of switchgrass

The mechanism behind lack-of-effect of lanthanum on seed germination of switchgrass

Titanium as a Beneficial Element for Crop Production

Lanthanum Affects Bell Pepper Seedling Quality Depending on the Genotype and Time of Exposure by Differentially Modifying Plant Height, Stem Diameter and Concentrations of Chlorophylls, Sugars, Amino Acids, and Proteins

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