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001-es BibID:	BIBFORM096582
035-os BibID:	(cikkazonosító)2045 (Wos)000712114300001 (Scopus)85115853954
Első szerző:	Mikóné Hamvas Márta (biológus)
Cím:	Microcystin-LR, a Cyanobacterial Toxin, Induces DNA Strand Breaks Correlated with Changes in Specific Nuclease and Protease Activities in White Mustard (Sinapis alba) Seedlings / M-Hamvas Márta, Vasas Gábor, Beyer Dániel, Nagylaki Eszter, Máthé Csaba
Dátum:	2021
ISSN:	2223-7747
Megjegyzések:	There is increasing evidence for the induction of programmed cell death (PCD) in vascular plants by the cyanobacterial toxin microcystin?LR (MC?LR). Our aim was to detect the occurrence of PCD?related DNA strand breaks and their possible connections to specific nuclease and protease activities. DNA breaks were studied by the deoxynucleotidyl transferase mediated dUTP nick end labeling (TUNEL) method in the photoperiodically grown dicot model of white mustard (Sinapis alba). In?gel nuclease and protease activity assays showed changes in the activities of specific isoenzymes during treatments with MC?LR. Strand breaks occurred both in the developing root epidermis and cortex. Several isoenzyme activities were related to these breaks, for example: an increase in the activity of neutral 80?75 kDa, acidic high MW (100?120 kDa) and, most importantly, an increase in the activity of neutral 26?20 kDa nucleases, all of them having single? stranded DNA cleaving (SSP nuclease) activities. Increases in the activities of alkaline proteases in the 61?41 kDa range were also detected and proved to be in relation with MC?LR?induced PCD. This is one of the first pieces of evidence on the correlation of PCD?related DNA strand breaks with specific hydrolase activities in a model dicot treated with a cyanobacterial toxin known to have environmental importance.
Tárgyszavak:	Természettudományok Biológiai tudományok idegen nyelvű folyóiratközlemény külföldi lapban folyóiratcikk microcystin-LR Sinapis alba programmed cell death TUNEL SSP nuclease protease in-gel activity assay
Megjelenés:	Plants-Basel. - 10 (2021), p. 1-12. -
További szerzők:	Vasas Gábor (1975-) (biológus-vegyész) Beyer Dániel (1982-) (molekuláris biológus) Nagylaki Eszter Máthé Csaba (1966-) (biológus)
Pályázati támogatás:	119647 OTKA 120638 OTKA
Internet cím:	Szerző által megadott URL DOI Intézményi repozitóriumban (DEA) tárolt változat
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