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001-es BibID:BIBFORM106668
Első szerző:Dobránszki Judit (biológus)
Cím:Ultrasound enhances plant growth and development by altering the DNA methylation, mRNA transcription and hormonal balance / Judit Dobránszki, Norbert Hidvégi, Andrea Gulyás, Georgina Pesti-Asbóth, Piroska Bíróné Molnár, Ildikó Forgács, Judit Remenyik
Dátum:2022
Megjegyzések:Within the framework of our project regarding the investigation of the working mechanism and usability of different physical cues/signals for influencing the growth and development of plants in an environment-soundly way, we studied the effects of ultrasound on DNA methylation, mRNA transcription and the hormonal balance of plants. Two model systems were applied, namely, ultrasonication of seeds of winter wheat (Triticum aestivum L.) and ultrasonication of in vitro explants of potato (Solanum tuberosum L.). In both systems the enhancement of the growth and development were detected. Behind this, we detected hypomethylation of the DNA associated with major pathways that have been shown to be up-regulated in mRNA transcription. Ultrasound stress altered the endogenous melatonin and auxin levels. A close relationship was evinced between the endogenous levels of the auxin (IAA) and melatonin and ascorbic acid. Melatonin had a dual role in plants, it acted as both an antioxidant and a growth regulator.
ISBN:978-963-490-468-7
Tárgyszavak:Agrártudományok Növénytermesztési és kertészeti tudományok előadáskivonat
könyvrészlet
plant biotechnology
ultrasonication
melatonin
indol acetic acid
Megjelenés:Biotechnology at the University of Debrecen - 2022 International Symposium : Abstract Book. - p. 20. -
További szerzők:Hidvégi Norbert (1986-) Gulyás Andrea (1985-) Pesti-Asbóth Georgina (1990-) (élelmiszerbiztonsági és -minőségi mérnök) Bíróné Molnár Piroska (1970-) (biokémia) Forgács Ildikó Noémi (1992-) (biológus) Gálné Remenyik Judit (1965-) (kémia tanár, okleveles vegyész)
Pályázati támogatás:TKP2021-EGA-20
Egyéb
Internet cím:Intézményi repozitóriumban (DEA) tárolt változat
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2.

001-es BibID:BIBFORM079350
Első szerző:Dobránszki Judit (biológus)
Cím:Ultrasonication of in vitro potato single node explants: Activation and recovery of antioxidant defence system and growth responses / Judit Dobránszki, Georgina Asbóth, Dávid Homoki, Piroska Bíró-Molnár, Jaime A. Teixeira da Silva, Judit Remenyik
Dátum:2017
ISSN:0981-9428
Megjegyzések:The ability to use sound or ultrasound (US) to modify plant growth in vitro, and if possible, to improve yield or productivity, would benefit horticultural scientists. In this study, potato (Solanum tuberosum L. cv. Desirée) in vitro node segments with a single leaf were exposed to US (35 kHz, 70 W, for 20 min). Morphological, physiological and biochemical parameters were measured. Treatment with US 24 h after ultrasonication temporarily accelerated shoot growth but inhibited the development and growth of roots due to a decrease in the level of AA directly after ultrasonication. At the end of the subculture period, i.e., 4 weeks after US treatment, shoot length increased 20% more than control shoots after 4 weeks, while shoot fresh weight was 24% higher than that of control shoots, representing the long-term after-effect of the US treatment. The antioxidant defence system was induced, partly by intensive plantlet growth and development from node segments, and partly by abiotic stress caused by the US treatment. Immediately (0 h) or 24 h after ultrasonication, superoxide dismutase, ascorbate peroxidase, and glutathione reductase activity increased significantly, as did the concentration of low molecular weight antioxidants (GSSG, GSH, AA, TCPa). However, there was no glutathione peroxidase activity, most likely due to the lack of selenium in the basal in vitro growth medium. Therefore, the glutathione-S-transferase path of the ascorbate-glutathione pathway was induced both by metabolic processes and by abiotic stresses and took part in the reduction of organic peroxides using glutathione. US treatment ameliorated the ratios of ascorbic acid/glutathione and reduced/oxidized glutathione, ensuring the development of plantlets with significantly improved shoot parameters, such as higher shoot length and fresh weight, by the end of the subculture period.
Tárgyszavak:Agrártudományok Élelmiszertudományok idegen nyelvű folyóiratközlemény külföldi lapban
Ascorbate peroxidase
Ascorbic acid
Glutathione-S-transferase
Shoot growth
Superoxide dismutase
Ultrasonication
Megjelenés:Plant Physiology And Biochemistry. - 121 (2017), p. 153-160. -
További szerzők:Pesti-Asbóth Georgina (1990-) (élelmiszerbiztonsági és -minőségi mérnök) Homoki Dávid (1988-) (növényorvos) Bíróné Molnár Piroska (1970-) (biokémia) Teixeira da Silva, Jaime A. Gálné Remenyik Judit (1965-) (kémia tanár, okleveles vegyész)
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DOI
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3.

001-es BibID:BIBFORM103981
035-os BibID:(cikkazonosító)979141 (WoS)000868255300001 (Scopus)85139965458
Első szerző:Pesti-Asbóth Georgina (élelmiszerbiztonsági és -minőségi mérnök)
Cím:Ultrasonication affects the melatonin and auxin levels and the antioxidant system in potato in vitro / Pesti-Asbóth Georgina, Molnár-Bíróné, Piroska, Forgács Ildikó, Remenyik Judit, Dobránszki Judit
Dátum:2022
ISSN:1664-462X
Megjegyzések:Melatonin is an ancient hormone whose physiological effects have been extensively studied in animals and human. We now know that it also plays a prominent role in the growth and development of plants. In our present experiment, the relationship between endogenous melatonin and the antioxidant system was investigated in potato plant grown in vitro. Changes in redox homeostasis under ultrasound stress were examined. The concentration of small molecule antioxidants and enzymes of the three-level antioxidant pathway was measured. ELISA method was used to determine the melatonin levels in plant tissues at each growth stage (0 h, 24 h, 48 h, 1 week, and 4 weeks after subculturing the explants) both in control and ultrasoundtreated plants. Ultrasound stress activated the three-level defense system and decreased the endogenous melatonin levels. Melatonin was able to provide protection against membrane damage caused by drastic ultrasound treatment. Melatonin at the heart of the redox network is a key component regulating various biochemical, cellular, and physiological responses. It has a dual role, as it is able to act both as a growth regulator and an antioxidant. A close relationship was evidenced between the plant hormone indole-3-acetic acid and melatonin and ascorbic acid.
Tárgyszavak:Agrártudományok Növénytermesztési és kertészeti tudományok idegen nyelvű folyóiratközlemény külföldi lapban
folyóiratcikk
redox homeostasis
endogenous melatonin
glutathione
lipid peroxidation
indole-3- acetic acid
Megjelenés:Frontiers in Plant Science. - 13 (2022), p. 1-15. -
További szerzők:Bíróné Molnár Piroska (1970-) (biokémia) Forgács Ildikó Noémi (1992-) (biológus) Dobránszki Judit (1967-) (biológus) Gálné Remenyik Judit (1965-) (kémia tanár, okleveles vegyész)
Pályázati támogatás:TKP2021-EGA-20
FIKP
Internet cím:Szerző által megadott URL
DOI
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