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Interactions between iron and titanium metabolism in spinach: A chlorophyll fluorescence study in hydropony
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SYSNO ASEP 0355815 Document Type J - Journal Article R&D Document Type Journal Article Subsidiary J Článek ve WOS Title Interactions between iron and titanium metabolism in spinach: A chlorophyll fluorescence study in hydropony Author(s) Cígler, Petr (UOCHB-X) RID, ORCID
Olejníčková, Julie (UEK-B) RID, SAI
Hrubý, Martin (UMCH-V) RID, ORCID
Cséfalvay, Ladislav (UEK-B) RID, SAI
Peterka, J. (CZ)
Kužel, S. (CZ)Number of authors 6 Source Title Journal of Plant Physiology. - : Elsevier - ISSN 0176-1617
Roč. 167, č. 18 (2010), s. 1592-1597Number of pages 6 s. Language eng - English Country PT - Portugal Keywords chlorophyll fluorescence ; iron ; photosynthetic apparatus ; spinach ; titanium Subject RIV CC - Organic Chemistry CEZ AV0Z40550506 - UOCHB-X (2005-2011) AV0Z40500505 - UMCH-V (2005-2011) AV0Z60870520 - UEK-B (2005-2011) UT WOS 000286484000010 DOI 10.1016/j.jplph.2010.06.021 Annotation We investigated the interconnection between the Fe uptake and the Ti intoxication in model experiment on Fe-deficient spinach plants to elucidate the mechanism of the biological activity of titanium in plants. The two different Ti (0 and 20mgL−1) and Fe (0 and 1.35mgL−1) concentrations in hydroponic medium were used in all four possible combinations. We compared chemical analysis of Ti and Fe in plants with the changes of the in vivo chlorophyll fluorescence. Although Fe and Ti concentration found in shoots of Ti-non-treated Fe-deficient plants was comparable with that in Ti-treated Fe-deficient plants, the Ti in the growth media had a negative effect on photosynthetic activity. The presence of Fe in medium significantly decreased the Ti concentration in shoots and increased the photosynthetic activity. We proposed that Ti affect components of electron transport chain containing Fe in their structure (particularly photosystem I) and decrease the photosystem II efficiency. Workplace Institute of Organic Chemistry and Biochemistry Contact asep@uochb.cas.cz ; Kateřina Šperková, Tel.: 232 002 584 ; Viktorie Chládková, Tel.: 232 002 434 Year of Publishing 2011
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