CCL

Összesen 3 találat.
#/oldal:
Részletezés:
Rendezés:

1.

001-es BibID:BIBFORM105289
Első szerző:Barnáné Szabó Zsuzsanna
Cím:Comparison of different non-destructive phenotyping approaches to assess acute phytotoxic effects of arsenic treatments in duckweed tests / Zsuzsanna Barnáné Szabó, Muhammad Irfan, Anna Hepp, Ilona Mészáros, Viktor Oláh
Dátum:2021
Megjegyzések:We assessed the acute phytotoxic effects of arsenite (AsO3 3- ) and arsenate (AsO4 3- ) on laboratory cultures of giant duckweed (Spirodela polyrhiza) in 3 days-long treatments in order to compare different rapid, nondestructive phenotyping methods. The growth of cultures was jointly measured with the photochemical efficiency by means of in vivo chlorophyll fluorescence imaging, and the relative ratio of anthocyaninaccumulating frond surfaces via digital imaging, respectively. Our results revealed stronger phytotoxicity of arsenite (EC50=2,3-2,7 mg As l-1 ) compared to arsenate (EC50=16-22 mg As l-1 ) under the applied test conditions. The calculated effective concentrations indicated similar sensitivities of the growth- and chlorophyll fluorescence-based parameters. At lower arsenic concentrations, however, growth inhibition was more sensitive. The relative share of anthocyanic frond surfaces increased due to arsenate treatments but decreased in response to arsenite. Therefore, this parameter is less applicable in direct characterization of phytotoxicity but offer additional information on physiological effects.
ISBN:978-963-8221-82-7
Tárgyszavak:Természettudományok Biológiai tudományok előadáskivonat
könyvrészlet
arsenic
duckweed test
chlorophyll fluorescence
anthocyanin
Megjelenés:XVI. Kárpát-medencei Környezettudományi Konferencia = 16th Carpathian Basin Conference for Environmental Sciences: absztrakt kötet = abstract book / szerk. Cseresznyés Dóra, Király Csilla. - p. 240-245. -
További szerzők:Ifran, Muhammad Hepp Anna (1991-) (biotechnológus) Mészáros Ilona (1952-) (biológus) Oláh Viktor (1980-) (biológus)
Pályázati támogatás:EFOP-3.4.3-16-2016-00016
EFOP
ÚNKP-19-3-I-81
Egyéb
EFOP-3.4.3-16-2016-00012
EFOP
NKFIH-OTKA-FK-134296
Egyéb
2020-1-DE01-KA203-0057
Egyéb
GINOP-2.3.2-15-2016- 00031
GINOP
Internet cím:Szerző által megadott URL
Intézményi repozitóriumban (DEA) tárolt változat
Borító:

2.

001-es BibID:BIBFORM118729
035-os BibID:(cikkazonosító)100405
Első szerző:Oláh Viktor (biológus)
Cím:Frond-level analyses reveal functional heterogeneity within heavy metal-treated duckweed colonies / Viktor Oláh, Kamilla Kosztankó, Muhammad Irfan, Zsuzsanna Barnáné Szabó, Marcel A. K Jansen, Sándor Szabó, Ilona Mészáros
Dátum:2024
ISSN:2667-064X
Megjegyzések:Duckweeds (Lemnaceae) rapidly produce clonal populations that make them ideal models in plant physiological and ecotoxicological research. Yet, despite their genetic homogeneity, duckweed colonies are clusters of successively produced fronds with different ontogenetic states, and this heterogeneity has rarely been studied. We analyzed frond-level photosynthetic responses of three duckweed species (Spirodela polyrhiza, Landoltia punctata and Lemna minor) to hexavalent chromium and nickel by means of chlorophyll fluorescence imaging. Our aim was to test whether fronds, or frond zones in their different developmental stages respond differently to heavy metal stress. Different response patterns were found for the three tested species. Young fronds of S. polyrhiza were more sensitive to chromate but less affected by nickel compared to mature ones, while in La. punctata the opposite was found. In Le. minor cultures, young fronds were more sensitive to both heavy metals compared to mature ones. Within-frond patterns indicated that chromate inhibited the marginal frond regions strongest. In La. punctata and Le. minor, nickel was most detrimental in the developing frond regions. In contrast, in S. polyrhiza the middle zone of both young and mature fronds was affected strongest by nickel. The observed patterns suggest that internal redistribution of toxicants plays a key role in shaping duckweed responses. Results highlight that ontogenetically different parts of duckweed plants respond differently to environmental stimuli. Since duckweed-based impact studies and economical applications rely strongly on the interactions between the duckweed colony and its environment, frond-, and within-frond level analysis of duckweed responses comprise a unique tool to reveal uptake, re-distribution and mode of action of environmentally relevant substances.
Tárgyszavak:Természettudományok Biológiai tudományok idegen nyelvű folyóiratközlemény külföldi lapban
folyóiratcikk
békalencse
frond
ontogenezis
klorofill fluoreszcencia leképezés
nehézfém stressz
Megjelenés:Plant Stress. - 11 (2024), p.1-11. -
További szerzők:Kosztankó Kamilla Irfan, Muhammad Barnáné Szabó Zsuzsanna (2000-) Jansen, Marcel A. K. Szabó Sándor Mészáros Ilona (1952-) (biológus)
Pályázati támogatás:FK 134296
OTKA
ÚNKP-23-5
Egyéb
Internet cím:Szerző által megadott URL
DOI
Intézményi repozitóriumban (DEA) tárolt változat
Borító:

3.

001-es BibID:BIBFORM107750
035-os BibID:(cikkazonosító)180 (WOS)000909169600001 (Scopus)85145834280
Első szerző:Oláh Viktor (biológus)
Cím:Species- and Metal-Specific Responses of the Ionome of Three Duckweed Species under Chromate and Nickel Treatments / Viktor Oláh, Muhammad Irfan, Zsuzsanna Barnáné Szabó, Zsófi Sajtos, Ágota Zsófia Ragyák, Boglárka Döncző, Marcel A. K. Jansen, Sándor Szabó, Ilona Mészáros
Dátum:2023
ISSN:2223-7747
Megjegyzések:In this study, growth and ionomic responses of three duckweed species were analyzed, namely Lemna minor, Landoltia punctata, and Spirodela polyrhiza, were exposed for short-term periods to hexavalent chromium or nickel under laboratory conditions. It was found that different duckweed species had distinct ionomic patterns that can change considerably due to metal treatments. The results also show that, because of the stress-induced increase in leaf mass-to-area ratio, the studied species showed different order of metal uptake efficiency if plant area was used as unit of reference instead of the traditional dry weight-based approach. Furthermore, this study revealed that mu XRF is applicable in mapping elemental distributions in duckweed fronds. By using this method, we found that within-frond and within-colony compartmentation of metallic ions were strongly metal- and in part species-specific. Analysis of duckweed ionomics is a valuable approach in exploring factors that affect bioaccumulation of trace pollutants by these plants. Apart from remediating industrial effluents, this aspect will gain relevance in food and feed safety when duckweed biomass is produced for nutritional purposes.
Tárgyszavak:Természettudományok Biológiai tudományok idegen nyelvű folyóiratközlemény külföldi lapban
folyóiratcikk
Megjelenés:Plants-Basel. - 12 : 1 (2023), p. 1-16. -
További szerzők:Irfan, Muhammad Barnáné Szabó Zsuzsanna (2000-) Sajtos Zsófi (1994-) (kémikus) Ragyák Ágota Döncző Boglárka (1987-) (biológiatanár-földrajztanár) Jansen, Marcel A. K. Szabó Sándor Mészáros Ilona (1952-) (biológus)
Pályázati támogatás:FK 134296
OTKA
2.3.3-15-2016-00029
GINOP
Internet cím:Szerző által megadott URL
DOI
Intézményi repozitóriumban (DEA) tárolt változat
Borító:
Rekordok letöltése1