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Title:Vpliv svinca in selena na ozkolistni koščec (Berula erecta Huds.) v in vitro pogojih
Authors:ID Rižnik, Tadeja (Author)
ID Ambrožič-Dolinšek, Jana (Mentor) More about this mentor... New window
ID Mechora, Špela (Comentor)
Files:.pdf MAG_Riznik_Tadeja_2017.pdf (1,32 MB)
MD5: 27F799663E3DA9ECE44728A841ACF028
 
Language:Slovenian
Work type:Master's thesis/paper
Typology:2.09 - Master's Thesis
Organization:FNM - Faculty of Natural Sciences and Mathematics
Abstract:Veliko območij v Sloveniji in na Zemlji je močno onesnaženih s svincem (Pb). Za reševanje težav, povezanih s Pb je dobro poznati, katere rastline so sposobne rasti na tovrstnih območjih in ali so primerne za fitoremediacijo onesnaženih tal. Selen naj bi imel nekatere pozitivne učinke na rastline. Vpliv svinca in interakcije svinca ter selena na rast in razvoj makrofita vrste Berula erecta smo spremljali glede na spremembo rastnih parametrov, fotokemično učinkovitost PS II, vsebnost fotosintetskih pigmentov, antocianov, vsebnost težkih kovin v tkivih in vsebnost glutationa ter cisteina v tkivih rastlin. Rastline so rastle v Murashige in Skoog mediju z dodanimi raztopinami 10 mg Pb L-1 in 50 mg Pb L-1 (Pb dodan v obliki Pb(NO3)2), kot tudi 10 mg Pb L-¹ v interakciji z 0,1 mg Se L-¹ in 50 mg Pb L-¹ v interakciji z 0,1 mg Se L-¹ (Se dodan v obliki Na2SeO3). Dodatek Pb zaviralno deluje na rast rastline v višino in na rast korenin, vzpodbuja pa rast stolonov in brstov. Pri kombinaciji svinca in selena je bilo opaziti podobne trende. S podaljševanjem časa izpostavljenosti so se na rastlinah pokazali vse bolj negativni učinki Pb, je pa opazno izboljšanje fitnesa rastline ob dodatku selena glede na nekatere parametre (vsebnost fotosinteznih pigmentov, antocianov).
Keywords:Svinec, selen, Berula erecta, rastni parametri, fotokemična učinkovitost, pigmenti.
Place of publishing:Maribor
Publisher:[T. Rižnik]
Year of publishing:2017
PID:20.500.12556/DKUM-66325 New window
UDC:581.5:582.795(043.2)
COBISS.SI-ID:23270408 New window
NUK URN:URN:SI:UM:DK:RXF3ILPN
Publication date in DKUM:16.08.2017
Views:1925
Downloads:266
Metadata:XML DC-XML DC-RDF
Categories:FNM
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Secondary language

Language:English
Title:The effect of lead and selenium on Berula erecta (Huds.) in in vitro conditions
Abstract:There are many areas on Earth, including Slovenia, that are contaminated with lead. This is why, it is important to know which plant species are capable to survive in contaminated areas and could prove useful for phytoremediation of contaminated soil. Selenium has some beneficial effects on plants. The effect of exposure of Berula erecta to different concentrations of lead (Pb) and lead in interaction with selenium (Se) was measured through the determination of growth parameters, photochemical efficiency, content of photosynthetic pigments, anthocyanins, content of heavy metals and glutathione and cysteine in tissues. Plants grew in vitro in Murashige and Skoog medium with addition of 10 mg Pb L-1 and 50 mg Pb L-1 (as Pb(NO3)2) and also 10 mg Pb L-¹ in interaction with 0,1 mg Se L-¹ and 50 mg Pb L-¹ in interaction with 0,1 mg Se L-¹ (as Na2SeO3). Pb in both concentrations suppressed the height of plants, the development of new roots and the length of roots, but it stimulated the development of stolons and buds. The similar trends were observed in Pb in interaction with Se. By prolonging the exposure of B. erecta to Pb, its negative effects were more pronounced. Se improves the fitness of plants, according to the observed parameters (content of photosynthetic pigments, anthocyanins).
Keywords:Lead, selenium, Berula erecta, growth parameters, photochemical efficiency, pigments.


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