TY  - JOUR
AU  - Vega, Isis
AU  - Nikolic, Miroslav
AU  - Pontigo, Sofia
AU  - Godoy, Karina
AU  - de, La Luz Mora, Maria
AU  - Cartes, Paula
PY  - 2019
UR  - http://rimsi.imsi.bg.ac.rs/handle/123456789/1195
AB  - Aluminum (Al) toxicity is one of the main growth and yield limiting factors for barley grown on acid soils. Silicon (Si) ameliorates Al toxicity as well as it promotes the phenolic compounds production that have antioxidant or structural role. We evaluated the time-dependent kinetics of Al and Si uptake and the impact of Si on the production of antioxidant- or structural- phenols in barley cultivars at the short-term. Two barley cultivars with contrasting Al tolerance (Hordeum vulgare 'Sebastian', Al tolerant; and H. vulgare 'Scarlett', Al sensitive), exposed to either -Al (0 mM) or +Al (0.2 mM) nutrient solutions without Si (-Si) or with 2 mM (+Si) were cultured for 48 h. Aluminum and Si concentration decreased in plants at all harvest times when Al and Si were simultaneously supplied; this effect was more noticeable in 'Scarlett'. Nevertheless, Si influenced the antioxidant system of barley irrespective of the Al tolerance of the cultivar, decreasing oxidative damage and enhancing radical scavenging activity, the production of phenolic compounds, and lignin accumulation in barley with short-term exposure to Al.
PB  - MDPI, Basel
T2  - Agronomy-Basel
T1  - Silicon Improves the Production of High Antioxidant or Structural Phenolic Compounds in Barley Cultivars under Aluminum Stress
IS  - 7
VL  - 9
DO  - 10.3390/agronomy9070388
ER  - 

@article{
author = "Vega, Isis and Nikolic, Miroslav and Pontigo, Sofia and Godoy, Karina and de, La Luz Mora, Maria and Cartes, Paula",
year = "2019",
abstract = "Aluminum (Al) toxicity is one of the main growth and yield limiting factors for barley grown on acid soils. Silicon (Si) ameliorates Al toxicity as well as it promotes the phenolic compounds production that have antioxidant or structural role. We evaluated the time-dependent kinetics of Al and Si uptake and the impact of Si on the production of antioxidant- or structural- phenols in barley cultivars at the short-term. Two barley cultivars with contrasting Al tolerance (Hordeum vulgare 'Sebastian', Al tolerant; and H. vulgare 'Scarlett', Al sensitive), exposed to either -Al (0 mM) or +Al (0.2 mM) nutrient solutions without Si (-Si) or with 2 mM (+Si) were cultured for 48 h. Aluminum and Si concentration decreased in plants at all harvest times when Al and Si were simultaneously supplied; this effect was more noticeable in 'Scarlett'. Nevertheless, Si influenced the antioxidant system of barley irrespective of the Al tolerance of the cultivar, decreasing oxidative damage and enhancing radical scavenging activity, the production of phenolic compounds, and lignin accumulation in barley with short-term exposure to Al.",
publisher = "MDPI, Basel",
journal = "Agronomy-Basel",
title = "Silicon Improves the Production of High Antioxidant or Structural Phenolic Compounds in Barley Cultivars under Aluminum Stress",
number = "7",
volume = "9",
doi = "10.3390/agronomy9070388"
}

Vega, I., Nikolic, M., Pontigo, S., Godoy, K., de, L. L. M. M.,& Cartes, P.. (2019). Silicon Improves the Production of High Antioxidant or Structural Phenolic Compounds in Barley Cultivars under Aluminum Stress. in Agronomy-Basel
MDPI, Basel., 9(7).
https://doi.org/10.3390/agronomy9070388

Vega I, Nikolic M, Pontigo S, Godoy K, de LLMM, Cartes P. Silicon Improves the Production of High Antioxidant or Structural Phenolic Compounds in Barley Cultivars under Aluminum Stress. in Agronomy-Basel. 2019;9(7).
doi:10.3390/agronomy9070388 .

Vega, Isis, Nikolic, Miroslav, Pontigo, Sofia, Godoy, Karina, de, La Luz Mora, Maria, Cartes, Paula, "Silicon Improves the Production of High Antioxidant or Structural Phenolic Compounds in Barley Cultivars under Aluminum Stress" in Agronomy-Basel, 9, no. 7 (2019),
https://doi.org/10.3390/agronomy9070388 . .

TY  - JOUR
AU  - Ribera-Fonseca, Alejandra
AU  - Rumpel, Cornelia
AU  - de, la Luz Mora, Maria
AU  - Nikolic, Miroslav
AU  - Cartes, Paula
PY  - 2018
UR  - http://rimsi.imsi.bg.ac.rs/handle/123456789/1147
AB  - Evidence indicates that silicon (Si) alleviates diverse stresses by improving the antioxidant capacity and phenolics metabolism of plants. We assessed the effect of sodium silicate (Na2SiO3) and calcium silicate (CaSiO3) on Si and aluminium (Al) uptake, antioxidant performance and phenolics (with antioxidant or structural function) of ryegrass cultivated on an acid Andisol under greenhouse conditions. Ryegrass was treated with either sodium silicate or calcium silicate at gradually increasing doses (250, 500 and 1000mg Si kg(-1) soil). Yield and concentrations of Si and Al were measured in roots and two shoot cuts. At the first cut, phenols, antioxidant enzymes, antioxidant capacity, lipid peroxidation and lignin production and composition were also determined. Ryegrass supplied with sodium silicate exhibited the highest Si content. Root Si was closely correlated with Al or Si:Al ratio. Shoot Si uptake increased total phenols and activities of antioxidant enzymes (CAT, APX and POD), but reduced lipid peroxidation. Silicon also changed the lignin production and composition in shoots at the highest sodium silicate dose. Silicon uptake reduced the deleterious effect of soil acidity in ryegrass. Sodium silicate had the greatest influence on the antioxidant system through enhancement of phenols production and antioxidant enzyme activation. Peroxidase activity appears to be associated with increased lignin biosynthesis in plants supplied with sodium silicate.
PB  - Csiro Publishing, Clayton
T2  - Crop & Pasture Science
T1  - Sodium silicate and calcium silicate differentially affect silicon and aluminium uptake, antioxidant performance and phenolics metabolism of ryegrass in an acid Andisol
EP  - 215
IS  - 2
SP  - 205
VL  - 69
DO  - 10.1071/CP17202
ER  - 

@article{
author = "Ribera-Fonseca, Alejandra and Rumpel, Cornelia and de, la Luz Mora, Maria and Nikolic, Miroslav and Cartes, Paula",
year = "2018",
abstract = "Evidence indicates that silicon (Si) alleviates diverse stresses by improving the antioxidant capacity and phenolics metabolism of plants. We assessed the effect of sodium silicate (Na2SiO3) and calcium silicate (CaSiO3) on Si and aluminium (Al) uptake, antioxidant performance and phenolics (with antioxidant or structural function) of ryegrass cultivated on an acid Andisol under greenhouse conditions. Ryegrass was treated with either sodium silicate or calcium silicate at gradually increasing doses (250, 500 and 1000mg Si kg(-1) soil). Yield and concentrations of Si and Al were measured in roots and two shoot cuts. At the first cut, phenols, antioxidant enzymes, antioxidant capacity, lipid peroxidation and lignin production and composition were also determined. Ryegrass supplied with sodium silicate exhibited the highest Si content. Root Si was closely correlated with Al or Si:Al ratio. Shoot Si uptake increased total phenols and activities of antioxidant enzymes (CAT, APX and POD), but reduced lipid peroxidation. Silicon also changed the lignin production and composition in shoots at the highest sodium silicate dose. Silicon uptake reduced the deleterious effect of soil acidity in ryegrass. Sodium silicate had the greatest influence on the antioxidant system through enhancement of phenols production and antioxidant enzyme activation. Peroxidase activity appears to be associated with increased lignin biosynthesis in plants supplied with sodium silicate.",
publisher = "Csiro Publishing, Clayton",
journal = "Crop & Pasture Science",
title = "Sodium silicate and calcium silicate differentially affect silicon and aluminium uptake, antioxidant performance and phenolics metabolism of ryegrass in an acid Andisol",
pages = "215-205",
number = "2",
volume = "69",
doi = "10.1071/CP17202"
}

Ribera-Fonseca, A., Rumpel, C., de, l. L. M. M., Nikolic, M.,& Cartes, P.. (2018). Sodium silicate and calcium silicate differentially affect silicon and aluminium uptake, antioxidant performance and phenolics metabolism of ryegrass in an acid Andisol. in Crop & Pasture Science
Csiro Publishing, Clayton., 69(2), 205-215.
https://doi.org/10.1071/CP17202

Ribera-Fonseca A, Rumpel C, de LLMM, Nikolic M, Cartes P. Sodium silicate and calcium silicate differentially affect silicon and aluminium uptake, antioxidant performance and phenolics metabolism of ryegrass in an acid Andisol. in Crop & Pasture Science. 2018;69(2):205-215.
doi:10.1071/CP17202 .

Ribera-Fonseca, Alejandra, Rumpel, Cornelia, de, la Luz Mora, Maria, Nikolic, Miroslav, Cartes, Paula, "Sodium silicate and calcium silicate differentially affect silicon and aluminium uptake, antioxidant performance and phenolics metabolism of ryegrass in an acid Andisol" in Crop & Pasture Science, 69, no. 2 (2018):205-215,
https://doi.org/10.1071/CP17202 . .

TY  - JOUR
AU  - Pontigo, Sofia
AU  - Ribera, Alejandra
AU  - Gianfreda, Liliana
AU  - de, la Luz Mora, Maria
AU  - Nikolic, Miroslav
AU  - Cartes, Paula
PY  - 2015
UR  - http://rimsi.imsi.bg.ac.rs/handle/123456789/836
AB  - So far, considerable advances have been achieved in understanding the mechanisms of Si uptake and transport in vascular plants. This review presents a comprehensive update about this issue, but also provides the new insights into the role of Si against mineral stresses that occur in acid soils. Such information could be helpful to understand both the differential Si uptake ability as well as the benefits of this mineral element on plants grown under acidic conditions. Silicon (Si) has been widely recognized as a beneficial element for many plant species, especially under stress conditions. In the last few years, great efforts have been made to elucidate the mechanisms involved in uptake and transport of Si by vascular plants and recently, different Si transporters have been identified. Several researches indicate that Si can alleviate various mineral stresses in plants growing under acidic conditions, including aluminium (Al) and manganese (Mn) toxicities as well as phosphorus (P) deficiency all of which are highly detrimental to crop production. This review presents recent findings concerning the influence of uptake and transport of Si on mineral stress under acidic conditions because a knowledge of this interaction provides the basis for understanding the role of Si in mitigating mineral stress in acid soils. Currently, only four Si transporters have been identified and there is little information concerning the response of Si transporters under stress conditions. More investigations are therefore needed to establish whether there is a relationship between Si transporters and the benefits of Si to plants subjected to mineral stress. Evidence presented suggests that Si supply and its subsequent accumulation in plant tissues could be exploited as a strategy to improve crop productivity on acid soils.
PB  - Springer, New York
T2  - Planta
T1  - Silicon in vascular plants: uptake, transport and its influence on mineral stress under acidic conditions
EP  - 37
IS  - 1
SP  - 23
VL  - 242
DO  - 10.1007/s00425-015-2333-1
ER  - 

@article{
author = "Pontigo, Sofia and Ribera, Alejandra and Gianfreda, Liliana and de, la Luz Mora, Maria and Nikolic, Miroslav and Cartes, Paula",
year = "2015",
abstract = "So far, considerable advances have been achieved in understanding the mechanisms of Si uptake and transport in vascular plants. This review presents a comprehensive update about this issue, but also provides the new insights into the role of Si against mineral stresses that occur in acid soils. Such information could be helpful to understand both the differential Si uptake ability as well as the benefits of this mineral element on plants grown under acidic conditions. Silicon (Si) has been widely recognized as a beneficial element for many plant species, especially under stress conditions. In the last few years, great efforts have been made to elucidate the mechanisms involved in uptake and transport of Si by vascular plants and recently, different Si transporters have been identified. Several researches indicate that Si can alleviate various mineral stresses in plants growing under acidic conditions, including aluminium (Al) and manganese (Mn) toxicities as well as phosphorus (P) deficiency all of which are highly detrimental to crop production. This review presents recent findings concerning the influence of uptake and transport of Si on mineral stress under acidic conditions because a knowledge of this interaction provides the basis for understanding the role of Si in mitigating mineral stress in acid soils. Currently, only four Si transporters have been identified and there is little information concerning the response of Si transporters under stress conditions. More investigations are therefore needed to establish whether there is a relationship between Si transporters and the benefits of Si to plants subjected to mineral stress. Evidence presented suggests that Si supply and its subsequent accumulation in plant tissues could be exploited as a strategy to improve crop productivity on acid soils.",
publisher = "Springer, New York",
journal = "Planta",
title = "Silicon in vascular plants: uptake, transport and its influence on mineral stress under acidic conditions",
pages = "37-23",
number = "1",
volume = "242",
doi = "10.1007/s00425-015-2333-1"
}

Pontigo, S., Ribera, A., Gianfreda, L., de, l. L. M. M., Nikolic, M.,& Cartes, P.. (2015). Silicon in vascular plants: uptake, transport and its influence on mineral stress under acidic conditions. in Planta
Springer, New York., 242(1), 23-37.
https://doi.org/10.1007/s00425-015-2333-1

Pontigo S, Ribera A, Gianfreda L, de LLMM, Nikolic M, Cartes P. Silicon in vascular plants: uptake, transport and its influence on mineral stress under acidic conditions. in Planta. 2015;242(1):23-37.
doi:10.1007/s00425-015-2333-1 .

Pontigo, Sofia, Ribera, Alejandra, Gianfreda, Liliana, de, la Luz Mora, Maria, Nikolic, Miroslav, Cartes, Paula, "Silicon in vascular plants: uptake, transport and its influence on mineral stress under acidic conditions" in Planta, 242, no. 1 (2015):23-37,
https://doi.org/10.1007/s00425-015-2333-1 . .