DC pole | Wartość | Język |
dc.contributor.author | Kurtyka, Renata | - |
dc.contributor.author | Kita, Andrzej | - |
dc.contributor.author | Karcz, Waldemar | - |
dc.date.accessioned | 2019-06-11T10:24:59Z | - |
dc.date.available | 2019-06-11T10:24:59Z | - |
dc.date.issued | 2011 | - |
dc.identifier.citation | Archives of Environmental Contamination and Toxicology, Vol. 61 (2011), s. 568-577 | pl_PL |
dc.identifier.issn | 1432-0703 | - |
dc.identifier.issn | 0090-4341 | - |
dc.identifier.uri | http://hdl.handle.net/20.500.12128/9440 | - |
dc.description.abstract | The effects of cadmium (Cd; 0.1–1000 lM)
and fusicoccin (FC) on growth, Cd2? content, and membrane
potential (Em) in maize coleoptile segments were
studied. In addition, the Em changes and accumulation of
Cd and calcium (Ca) in coleoptile segments treated with
Cd2? combined with 1 lM FC or 30 mM tetraethylammonium
(TEA) chloride (K?-channel blocker) were also
determined. In this study, the effects of Ca2?-channel
blockers [lanthanum (La) and verapamil (Ver)] on growth
and content of Cd2? and Ca2? in coleoptile segments were
also investigated. It was found that Cd at high concentrations
(100 and 1000 lM) significantly inhibited endogenous
growth of coleoptile segments and simultaneously
measured proton extrusion. FC combined with Cd2?
counteracted the toxic effect of Cd2? on endogenous
growth and significantly decreased Cd2? content (not the
case for Cd2? at the highest concentration) in coleoptile
segments. Addition of Cd to the control medium caused
depolarization of Em, the extent of which was dependent on
Cd concentration and time of treatment with Cd2?.
Hyperpolarization of Em induced by FC was suppressed in
the presence of Cd2? at 1000 lM but not Cd2? at 100 lM.
It was also found that treatment of maize coleoptile segments
with 30 mM TEA chloride caused hyperpolarization
of Em and decreased Cd2? content in coleoptile segments, suggesting that, in the same way as for FC, accumulation of
Cd2? was dependent on plasma membrane (PM) hyperpolarization.
Similar to FC, TEA chloride also decreased
Ca2? content in coleoptile segments. La and Ver combined
with Cd2? (100 lM) significantly decreased Cd content in
maize coleoptile segments, but only La completely abolished
the toxic effect of Cd2? on endogenous growth and
growth in the presence of FC. Taken together, these results
suggest that the mechanism by which FC counteracts the
toxic effect of Cd2? (except at 1000 lM Cd2?) on the
growth of maize coleoptile segments involves both stimulation
of PM H?-ATPase activity by FC as well as Cd2?-
permeable, voltage-dependent Ca channels, which are
blocked by FC and TEA chloride-induced PM hyperpolarization. | pl_PL |
dc.language.iso | en | pl_PL |
dc.rights | Uznanie autorstwa-Użycie niekomercyjne 3.0 Polska | * |
dc.rights.uri | http://creativecommons.org/licenses/by-nc/3.0/pl/ | * |
dc.subject | Cadmium (Cd) | pl_PL |
dc.subject | heavy metals | pl_PL |
dc.subject | phytotoxicity | pl_PL |
dc.subject | fusicoccin (FC) | pl_PL |
dc.subject | counteraction the toxic effects | pl_PL |
dc.title | Fusicoccin counteracts the toxic effect of cadmium on the growth of maize coleoptile segments | pl_PL |
dc.type | info:eu-repo/semantics/article | pl_PL |
dc.identifier.doi | 10.1007/s00244-011-9662-2 | - |
Pojawia się w kolekcji: | Artykuły (WNP)
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