Journal ArticleDOI
Polyamines and amino acids in triticale plants grown on humic acids enriched nutrient solution and treated with UV-B irradiation
Iskren Sergiev,Dessislava Todorova,Zornitsa Katerova,Ida Brambilla,Sergio Mapelli,Svetlana Simova +5 more
TLDR
In this paper, the effects of UV-B irradiation and Biomin (a natural substance extracted from coal with active ingredients of Humic acids) on the content of endogenous polyamines spermine, spermidine and putrescine, and free amino acids in shoots and roots of young triticale seedlings were investigated.Abstract:
The effects of UV-B irradiation and Biomin (a natural substance extracted from coal with active ingredients of humic acids) on the content of endogenous polyamines spermine, spermidine and putrescine, and free amino acids in shoots and roots of young triticale seedlings were investigated. Biomin was added to the nutrient medium 3 days prior to UV-B irradiation. The seedlings were treated with 7.7 kJ m−2 day−1 UV-B light for 4 days. The exposure to UV-B increased total free amino acids, while Biomin application alone did not affect considerably their content. The treatment with UV-B or Biomin alone provoked augmentation of conjugated and bound polyamine (PA) fractions. Data suggest that Biomin alleviates the negative consequences of UV-B stress, manifested by the normalized amino acid and polyamine amounts in the UV-B + Biomin-treated plants. This study demonstrates the protective effect of Biomin on triticale plants against UV-B irradiation, which could be related to alterations in PAs and amino acids pools.read more
Citations
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Journal ArticleDOI
Accessions of Brazilian ginseng (Pfaffia glomerata) with contrasting anthocyanin content behave differently in growth, antioxidative defense, and 20-hydroxyecdysone levels under UV-B radiation
Sérgio Heitor Sousa Felipe,Diego Silva Batista,Kristhiano Chagas,Ludmila Nayara de Freitas Correia,Tatiane Dulcineia Silva,Evandro Alexandre Fortini,Priscila Oliveira Silva,Wagner Campos Otoni +7 more
TL;DR: It is shown that UV-B radiation is a potential elicitor for increasing 20E content in P. glomerata grown in vitro, and Notably, A43 displayed 56% more anthocyanin to the former, a possible defense againstUV-B.
Book ChapterDOI
Triticale (X Triticosecale Wittmack): Role and Responses Under Abiotic Stress
TL;DR: Triticale (X Triticosecale Wittmack) is an allotetraploid and man-made cereal generated by the initial crossing between wheat (Triticum) and rye (Secale) with an AABBRR genome, hoping to combine different indices of high yield potential and quality grain protein of wheat and high resistance to abiotic stresses of rye as mentioned in this paper .
References
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Journal ArticleDOI
Rapid determination of free proline for water-stress studies
TL;DR: In this article, a simple colorimetric determination of proline in the 0.1 to 36.0 μmoles/g range of fresh weight leaf material was presented.
Journal ArticleDOI
Proline: a multifunctional amino acid
László Szabados,Arnould Savouré +1 more
TL;DR: The compartmentalization of proline biosynthesis, accumulation and degradation in the cytosol, chloroplast and mitochondria is discussed and the role of prolines in cellular homeostasis, including redox balance and energy status, is described.
Journal ArticleDOI
Polyamines and environmental challenges : recent development
TL;DR: All the data support the view that putrescine and derived polyamines (spermidine, spermine, long-chained polyamides) may have several functions during environmental challenges.
Journal ArticleDOI
Physiological effects of humic substances on higher plants
TL;DR: The physiological effects of humic substances (HS) on some aspects of plant growth and metabolism are examined in this article, where the effect of HS on plant growth depends on the source, concentration and molecular weight humic fraction.
Journal ArticleDOI
Amino acid analysis: aqueous dimethyl sulfoxide as solvent for the ninhydrin reaction.
TL;DR: Dimethyl sulfoxide can replace the latter, volume for volume, in a ninhydrin reagent mixture that gives equal performance and has improved stability, and is recommended to replace methyl Cellosolve-containing reagents in the quantitative determination of amino acids by automatic analyzers and by the manual ninHydrin method.
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