DC pole | Wartość | Język |
dc.contributor.author | Rudnicka, Małgorzata | - |
dc.contributor.author | Ludynia, Michał | - |
dc.contributor.author | Karcz, Waldemar | - |
dc.date.accessioned | 2019-01-08T08:45:26Z | - |
dc.date.available | 2019-01-08T08:45:26Z | - |
dc.date.issued | 2019 | - |
dc.identifier.citation | Frontiers in Plant Science, Vol. 9 (2019), Art. No. 1940 | pl_PL |
dc.identifier.issn | 1664-462X | - |
dc.identifier.uri | http://hdl.handle.net/20.500.12128/7647 | - |
dc.description.abstract | Naphthazarin (5,8-dihydroxy-1,4-naphthoquinone, DHNQ) is a naturally occurring
1,4-naphthoquinone derivative. In this study, we focused on elucidating the toxic effect
of this secondary metabolite on the growth of plant cells. The dose–response curves that
were obtained for the effects of DHNQ on endogenous and IAA-induced growth in maize
coleoptile segments differ in shape; in the first case, it is linear, while in the presence of
auxin it is bell-shaped with the maximum at 1 mM. It was found that DHNQ at almost all
concentrations studied, when added to the incubation medium inhibited endogenous
growth (excluding naphthazarin at 0.001 mM) as well as growth in the presence of
IAA. Simultaneous measurements of the growth and external medium pH of coleoptile
segments indicated that DHNQ diminished or eliminated proton extrusion at all of the
concentrations that were used. Interestingly, the oxidative stress in maize coleoptile cells,
which was measured as hydrogen peroxide (H2O2) production, catalase activity, redox
activity and malondialdehyde (MDA) content, increased at the lower concentrations
of DHNQ (<1 mM), thus suggesting a specific character of its action. It was also
found that naphthazarin at concentration higher than 0.1 mM caused the depolarization
of the membrane potential (Em). An analysis of the organization and anisotropy of
the cortical microtubules showed that naphthazarin at all of the concentrations that
were studied changed the IAA-induced transverse microtubule reorientation to an
oblique reorientation. Our results indicate that naphthazarin diminished the growth of
maize coleoptile cells by a broad spectrum of its toxic effects, thereby suggesting
that naphthazarin might be a hypothetical component of new bioherbicides and
biopesticides. | pl_PL |
dc.language.iso | en | pl_PL |
dc.rights | Uznanie autorstwa 3.0 Polska | * |
dc.rights.uri | http://creativecommons.org/licenses/by/3.0/pl/ | * |
dc.subject | naphthazarin | pl_PL |
dc.subject | IAA | pl_PL |
dc.subject | maize | pl_PL |
dc.subject | growth | pl_PL |
dc.subject | oxidative stress | pl_PL |
dc.title | The Effect of Naphthazarin on the Growth, Electrogenicity, Oxidative Stress, and Microtubule Array in Z. mays Coleoptile Cells Treated With IAA | pl_PL |
dc.type | info:eu-repo/semantics/article | pl_PL |
dc.relation.journal | Frontiers in Plant Science | pl_PL |
dc.identifier.doi | 10.3389/fpls.2018.01940 | - |
Pojawia się w kolekcji: | Artykuły (WNP)
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