Influence of lead on the development of lupin seedlings and ultrastructural localization of this metal in the roots

Woźny, Adam; Zatorska, Benigna; Młodzianowski, Fortunat

doi:10.5586/asbp.1982.031

Cited by 28 publications

(3 citation statements)

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“…The distribution of lead deposits in the meristematic cells of A. cepa roots was similar to that described by other authors (Gzyl et al 1997; Wierzbicka 1995; Woźny et al 1982). Great number of lead deposits in cell walls and vacuoles confirms that this metal is neutralised by immobilisation in those structures (Krzesłowska et al 2010; Wierzbicka 1995, 1998).…”

Section: Discussionsupporting

confidence: 90%

“…Lead deposits were noticed predominately in the cell walls, where they were apparently chelated and bound tightly with middle lamellar polysaccharides as it had been reported previously (Antosiewicz and Wierzbicka 1999; Krzesłowska et al 2009; Tung and Tample 1996; Wierzbicka 1998). Plant cell wall is regarded as one of the main sites for lead deposition and detoxification (Baranowska-Morek and Wierzbicka 2004; Jarvis and Leung 2002; Wierzbicka 1987a, b, 1998; Woźny et al 1982). The occurrence of lead deposits in dictyosomal vesicles, endoplasmic reticulum or plasmalemma observed in the examined material is also connected with the mechanisms of metal exclusion from cell metabolism (Wierzbicka 1995, 1998).…”

Section: Discussionmentioning

confidence: 99%

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The effect of pre-incubation of Allium cepa L. roots in the ATH-rich extract on Pb uptake and localization

Glińska

Gapińska

2012

Protoplasma

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The positive influence of anthocyanin (ATH) on toxic metal-treated plant material is well documented; however, it is still not explained if it is caused by changes in element absorption and distribution. Therefore, detailed analysis of the effect of the ATH-rich extract from red cabbage leaves on Pb uptake and localization at morphological, anatomical and ultrastructural level was the goal of this study. Two-day-old adventitious roots of Allium cepa L. (cv. Polanowska) were treated for 2 h with the aqueous solution of Pb(NO3)2 at the concentration of 100 μM with or without preliminary incubation in the anthocyanin-rich extract from Brassica oleracea L. var. capitata rubra leaves (250 μM, 3 h). The red cabbage extract did not change the total Pb uptake but it enhanced the translocation of accumulated metal from roots to shoots. Within the pretreated roots, more Pb was deposited in their basal part and definitely smaller amount of the metal was bound in the apoplast of the outer layers of cortex cells. The ultrastructural analysis (transmission electron microscopy and X-ray microanalysis) revealed that the ATH-rich extract lowered the number of Pb deposits in intracellular spaces, cell wall and cytoplasm of root meristematic cells as well as in such organelles important to cell metabolism as mitochondria, plastids and nucleus. The Pb deposits were preferably localised in those vacuoles where ATH also occurred. This sequestration of Pb in vacuoles is probably responsible for reduction of metal cytotoxicity and consequently could lead to better plant growth.

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Section: Discussionsupporting

confidence: 90%

Section: Discussionmentioning

confidence: 99%

The effect of pre-incubation of Allium cepa L. roots in the ATH-rich extract on Pb uptake and localization

Glińska

Gapińska

2012

Protoplasma

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“…In contrast, different concentrations of cadmium chloride (CdCl 2 ) decreased the germination percentage and the germination rate index (GRI) of cowpea (Vigna unguiculata L.) (AI-Rumaih et al 2001). Similarly, the inhibitory and toxic effects of lead on the germination of seeds of Lupinus luteus (Wozny et al 1982) and pea (Pisum sativum) (Wierzbicka and Obidzinska 1998) and cadmium on pea (Smiri 2011) are reported. In yet another study, Atici et al (2005) observed that lead and zinc significantly delayed and impeded the germination of chickpea (Cicer arietinum cv.…”

Section: Legume Germination Under Metal Stressmentioning

confidence: 99%

Toxic Effects of Heavy Metals on Germination and Physiological Processes of Plants

Wani

Khan

Zaidi

2012

Toxicity of Heavy Metals to Legumes and Bioremediation

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Pollution of the environment by toxic metals in recent years has accelerated dramatically due to rapid industrial progress. Heavy metals when taken up in amounts in excess of the normal concentration produce lethal effects on plants, on microbes, and directly or indirectly on the human health. Deleterious impact of metals on plants includes the reduction in germinability of seeds, inactivation of enzymes, damage to cells by acting as antimetabolites, or formation of precipitates or chelates with essential metabolites. Heavy metals also show unconstructive effects on other physiological processes like photosynthesis, gaseous exchange, water relations, and mineral/nutrient absorption by plants. These adverse effects may be due to the generation of reactive oxygen species which may cause oxidative stress. The impact of heavy metals on germination of legume seeds and different physiological events of plants with special reference to leguminous plants grown in distinct agroecological niches is highlighted.

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Molecular Mechanism of Lead Toxicity and Tolerance in Plants

Srivastava¹,

Srivastava²

2023

Environmental Science and Engineering

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Influence of lead on the development of lupin seedlings and ultrastructural localization of this metal in the roots

Cited by 28 publications

References 0 publications

The effect of pre-incubation of Allium cepa L. roots in the ATH-rich extract on Pb uptake and localization

The effect of pre-incubation of Allium cepa L. roots in the ATH-rich extract on Pb uptake and localization

Toxic Effects of Heavy Metals on Germination and Physiological Processes of Plants

Molecular Mechanism of Lead Toxicity and Tolerance in Plants

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