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001-es BibID:	BIBFORM121343
035-os BibID:	(Scopus)85188906269 (WoS)001193317300001
Első szerző:	Bácsi István (biológus)
Cím:	Salinity tolerance and desalination properties of a Haematococcus lacustris strain from eastern Hungary / István Bácsi, Aida Figler, Edina Simon, Majd Muwafaq Yaqoob, Kamilla Márton, Viktória B-Béres
Dátum:	2024
ISSN:	1664-302X
Megjegyzések:	Nowadays the increasing amount of saline wastewaters has given rise to various biological desalination processes, among which the application possibilities of microalgae represents a priority research area. Next to "real" aquatic species (members of phytoplankton or phytobenthon), species from ephemeral aquatic habitats or aeroterrestrial algae also could be good candidates of research studying salt tolerance or desalination ability, since salinity stress is often referred as "physiological drought" and species from ephemeral habitats can be characterized by high drought tolerance. In this study, the salinity tolerance, salt and nutrient removal ability of a Haematococcus lacustris strain from eastern Hungary were investigated. Vegetative cells showed low salt tolerance, survival was ensured by the formation of cysts up to a sodium-chloride concentration of 2,000 mg l?1. Although relatively moderate (a max. 30%) conductivity reduction and chloride removal were observed, notable (nearly 100%) nitrate and phosphate removal occurred even in the presence of 2,000 mg l?1 NaCl. Carotenoid accumulation was observed earlier and in higher extent in salt treated cultures than in drying out ones, although the amount of astaxanthin-esters was significantly higher in the cultures of drying out experiment than in the corresponding cultures of salt treatment characterized with similar chloride content. Our results suggest that algae isolates from ephemeral aquatic habitats endangered by regular drying out (exposed to special salt stress), could have notable salt tolerance and consequently successful applicability in nutrient removal processes from slightly saline wastewaters. The accumulation of valuable metabolites (such as astaxanthin) as a response to salinity stress, could enhance the economic value of the biomass. Copyright ? 2024 Bácsi, Figler, Simon, Yaqoob, Márton and B-Béres.
Tárgyszavak:	Természettudományok Biológiai tudományok idegen nyelvű folyóiratközlemény külföldi lapban folyóiratcikk cyst formation cyst maturation drying out Haematococcus ion removal salt-treatment
Megjelenés:	Frontiers in Microbiology. - 15 (2024), p. 1-15. -
További szerzők:	Figler Aida (1993-) (okleveles hidrobiológus) Simon Edina (1981-) (ökológus) Yaqoob, Majd Muwafaq Márton Kamilla (1995-) (tanszéki mérnök) B-Béres Viktória (1981-) (biológus)
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001-es BibID:	BIBFORM098746
035-os BibID:	(cikkazonosító)2112 (WoS)000644099500001 (Scopus)85106221660
Első szerző:	Figler Aida (okleveles hidrobiológus)
Cím:	Effects of Nutrient Content and Nitrogen to Phosphorous Ratio on the Growth, Nutrient Removal and Desalination Properties of the Green Alga Coelastrum morus on a Laboratory Scale / Figler Aida, Márton Kamilla, B-Béres Viktória, Bácsi István
Dátum:	2021
ISSN:	1996-1073
Megjegyzések:	In wastewater, nutrient concentrations and salinity vary substantially, however, the optimal N:P ratio for the treatment using microalgae is not well described. In this study, the effects of higher and lower nitrate and phosphate contents and N:P ratios on growth, nutrient removal ability and halotolerance of the common green alga Coelastrum morus were investigated in model solutions. The results suggest that high nitrate content (above 100 mg L-1) with a similarly high phosphate concentration (resulting low N:P ratio) is not favorable for growth. The studied isolate can be considered as a halotolerant species, showing remarkable growth up to 1000 mg L?1 NaCl and it seems that despite the negative effects on growth, higher nutrient content contributes to higher halotolerance. A significant amount of nitrate removal was observed in media with different nutrient contents and N:P ratios with different salt concentrations. High N:P ratios favor phosphate removal, which is more inhibited by increasing NaCl concentration than nitrate uptake. Overall, with a relatively higher nutrient content and a favorable (5 or higher) N:P ratio, a common green algal species such as C. morus could be a promising candidate next to species from the Chlorellaceae and Scenedesmaceae families.
Tárgyszavak:	Természettudományok Biológiai tudományok idegen nyelvű folyóiratközlemény külföldi lapban folyóiratcikk green alga nutrient content N:P ratio salt tolerance nutrient removal salt content reduction
Megjelenés:	Energies. - 14 : 8 (2021), p. 1-16. -
További szerzők:	Márton Kamilla (1995-) (tanszéki mérnök) B-Béres Viktória (1981-) (biológus) Bácsi István (1977-) (biológus)
Pályázati támogatás:	NKFIH FK 131 917 Egyéb
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001-es BibID:	BIBFORM082389
035-os BibID:	(cikkazonosító)2527 (Wos)000507378600100 (Scopus)85085000484
Első szerző:	Figler Aida (okleveles hidrobiológus)
Cím:	Salt Tolerance and Desalination Abilities of Nine Common Green Microalgae Isolates / Figler Aida, B-Béres Viktória, Dobronoki Dalma, Márton Kamilla, Nagy Sándor Alex, Bácsi István
Dátum:	2019
ISSN:	2073-4441
Megjegyzések:	Abstract: In recent years, decline of freshwater resources has been recognized as one of the main environmental problems on global level. In addition to the increasing extent of primary salinization due to climate change, secondary salinization caused by human interventions is also a significantly increasing problem, therefore, the development of various chemical-free, biological desalination and removal procedures will become increasingly important. In the present study, the salinity tolerance, salinity, and nutrient reducing ability of nine common freshwater microalgae species from the genera Chlorella, Chlorococcum, Desmodesmus, Scenedesmus, and Monoraphidium were investigated. Our results proved that the studied green microalgae species are halotolerant ones, which are able to proliferate in environments with high salt concentrations. Furthermore, most of the species were able to reduce conductivity and remove significant amounts of chloride (up to 39%) and nutrients (more than 90% nitrate). The results proved that nitrate removal of the studied species was not influenced by salt concentration, only indirectly via growth inhibition. However, the results also highlighted that N:P ratio of the medium has primarily importance in satisfactory phosphorous removal. It can be concluded that assemblages of the studied microalgae species could be able to adapt to changing conditions even of salt-rich wastewaters and improve water quality during bioremediation processes.
Tárgyszavak:	Természettudományok Környezettudományok idegen nyelvű folyóiratközlemény külföldi lapban folyóiratcikk green microalgae salt tolerance conductivity reduction nutrient removal
Megjelenés:	Water. - 11 : 12(2019), p. 1-17. -
További szerzők:	B-Béres Viktória (1981-) (biológus) Dobronoki Dalma (1992-) (hidrobiológus) Márton Kamilla (1995-) (tanszéki mérnök) Nagy Sándor Alex (1956-) (hidrobiológus) Bácsi István (1977-) (biológus)
Pályázati támogatás:	GINOP-2.2.1-15-2016-00029 GINOP GINOP-2.3.2-15-2016-00019 GINOP NKFIH-1150-6/2019 Egyéb
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