Silicon alleviates antimony phytotoxicity in giant reed (Arundo donax L.)

Shetty, Rajpal; Vidya, Chirappurathu Sukumaran-Nair; Weidinger, Marieluise; Vaculík, Marek

doi:10.1007/s00425-021-03756-4

Cited by 11 publications

(5 citation statements)

References 57 publications

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“…We observed a negative interaction between Si and Sb in WT, with Si absorption being reduced by 50% in the presence of Sb in roots and shoots, while Sb concentration remained constant in roots but decreased in shoots. This contrasts with studies that found Si inhibited absorption of Sb [ 41 ], As [ 42 ], Se [ 43 ] and Cd [ 32 ]. Reduced Si concentration in Sb + Si treatment of WT could be due to Sb and Si competing for the same absorption site, or Sb was discovered to be very toxic to WT plants with increased MDA content in roots and decreased root biomass, causing oxidative damage to the root and eventually reducing Si uptake.…”

Section: Discussioncontrasting

confidence: 78%

Do Antimonite and Silicon Share the Same Root Uptake Pathway by Lsi1 in Sorghum bicolor L. Moench?

Vidya

Shetty

Bokor

et al. 2023

Plants

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A study was conducted to further develop our understanding of antimony (Sb) uptake in plants. Unlike other metal(loid)s, such as silicon (Si), the mechanisms of Sb uptake are not well understood. However, SbIII is thought to enter the cell via aquaglyceroporins. We investigated if the channel protein Lsi1, which aids in Si uptake, also plays a role in Sb uptake. Seedlings of WT sorghum, with normal silicon accumulation, and its mutant (sblsi1), with low silicon accumulation, were grown in Hoagland solution for 22 days in the growth chamber under controlled conditions. Control, Sb (10 mg Sb L−1), Si (1mM) and Sb + Si (10 mg Sb L−1 + 1 mM Si) were the treatments. After 22 days, root and shoot biomass, the concentration of elements in root and shoot tissues, lipid peroxidation and ascorbate levels, and relative expression of Lsi1 were determined. When mutant plants were exposed to Sb, they showed almost no toxicity symptoms compared to WT plants, indicating that Sb was not toxic to mutant plants. On the other hand, WT plants had decreased root and shoot biomass, increased MDA content and increased Sb uptake compared to mutant plants. In the presence of Sb, we also found that SbLsi1 was downregulated in the roots of WT plants. The results of this experiment support the role of Lsi1 in Sb uptake in sorghum plants.

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Section: Discussioncontrasting

confidence: 78%

Do Antimonite and Silicon Share the Same Root Uptake Pathway by Lsi1 in Sorghum bicolor L. Moench?

Vidya

Shetty

Bokor

et al. 2023

Plants

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“…Additionally, the Sb levels in ramie roots and leaves were also inhibited by silicic acid addition. Similarly, previous studies illustrated that the application of Si in rice reduced Sb accumulation and limited Sb translocation to shoots in rice (Oryza sativa L.) [44], giant reed (Arundo donax L.) [45], and maize (Zea mays L.) [46]. On the one hand, the Si-induced reduction in Sb contents in ramie tissues could be attributed to the competition between Sb and Si for the same uptake channels.…”

Section: Sbiii Analogs On Sbiii Uptake By Ramiesupporting

confidence: 58%

“…On the one hand, the Si-induced reduction in Sb contents in ramie tissues could be attributed to the competition between Sb and Si for the same uptake channels. On the other hand, it might be because Si could mitigate the toxicity of Sb and enhance the lignification of root structures, potentially restricting the translocation of Sb [45]. Different from AsIII, glycerol, and silicic acid, the addition of glucose had no significant effect on Sb concentrations in the roots and leaves.…”

Section: Sbiii Analogs On Sbiii Uptake By Ramiementioning

confidence: 97%

Effects of Transporter Inhibitors and Chemical Analogs on the Uptake of Antimonite and Antimonate by Boehmeria nivea L.

Lu,

Peng,

Wang

et al. 2023

Toxics

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Antimony (Sb) is a non-essential metalloid that can be taken up by plants from contaminated soils and thus enter the food chain and threaten human health. Boehmeria nivea L. (ramie) is a promising phytoremediation plant for Sb-polluted soils. However, the mechanisms of antimonite (SbIII) and antimonate (SbV) uptake by ramie remain unclear. In this study, a hydroponic system was established to investigate how different substances affect the uptake of SbIII or SbV by ramie, including an energy inhibitor (malonic acid), an aquaglyceroporin inhibitor (silver nitrate), an SbV analog (phosphate—PV), and SbIII analogs (arsenite—AsIII, glycerol, silicic acid—Si, and glucose). The results indicated that ramie primarily transported Sb by increasing the Sb concentration in the bleeding sap, rather than increasing the weight of the bleeding sap. After 16 h of Sb exposure, the absolute amount of transported Sb from the roots to the aboveground parts was 1.90 times higher under SbIII than under SbV. The addition of malonic acid significantly inhibited the uptake of SbV but had limited effects on SbIII, indicating that SbV uptake was energy dependent. PV addition significantly reduced SbV uptake, while the addition of AsIII, glycerol, and Si obviously inhibited SbIII uptake. This suggested that the uptake of SbV might be via low-affinity P transporters and SbIII might use aquaglyceroporins. These findings deepen the understanding of Sb uptake pathways in ramie, contribute to a better comprehension of Sb toxicity mechanisms in ramie, and establish a foundation for identifying the most effective Sb uptake pathways, which could further improve the efficiency of phytoremediation of Sb-polluted soils.

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“…Si supported the antioxidant defence system and thus reduced oxidative stress symptoms, and although Si did not reduce Sb content in roots, it considerably restricted Sb translocation to shoot. Shetty et al (2021) attributed the blocked Sb translocation to root lignification, which was observed to a greater extent in Si-treated plants of Arundo donax. Moreover, enhanced photosynthetic pigments and overall photosynthetic yield were described.…”

Section: Antimonymentioning

confidence: 96%

Silicon nanoparticles vs trace elements toxicity: Modus operandi and its omics bases

Mukarram,

Ahmad,

Choudhary

et al. 2024

Front. Plant Sci.

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Phytotoxicity of trace elements (commonly misunderstood as ‘heavy metals’) includes impairment of functional groups of enzymes, photo-assembly, redox homeostasis, and nutrient status in higher plants. Silicon nanoparticles (SiNPs) can ameliorate trace element toxicity. We discuss SiNPs response against several essential (such as Cu, Ni, Mn, Mo, and Zn) and non-essential (including Cd, Pb, Hg, Al, Cr, Sb, Se, and As) trace elements. SiNPs hinder root uptake and transport of trace elements as the first line of defence. SiNPs charge plant antioxidant defence against trace elements-induced oxidative stress. The enrolment of SiNPs in gene expressions was also noticed on many occasions. These genes are associated with several anatomical and physiological phenomena, such as cell wall composition, photosynthesis, and metal uptake and transport. On this note, we dedicate the later sections of this review to support an enhanced understanding of SiNPs influence on the metabolomic, proteomic, and genomic profile of plants under trace elements toxicity.

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Silicon alleviates antimony phytotoxicity in giant reed (Arundo donax L.)

Cited by 11 publications

References 57 publications

Do Antimonite and Silicon Share the Same Root Uptake Pathway by Lsi1 in Sorghum bicolor L. Moench?

Do Antimonite and Silicon Share the Same Root Uptake Pathway by Lsi1 in Sorghum bicolor L. Moench?

Effects of Transporter Inhibitors and Chemical Analogs on the Uptake of Antimonite and Antimonate by Boehmeria nivea L.

Silicon nanoparticles vs trace elements toxicity: Modus operandi and its omics bases

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