Effects of heavy metals on seed germination and early seedling growth of Arabidopsis thaliana

Li, Weiqiang; Khan, M. Ajmal; Yamaguchi, Shinjiro; Kamiya, Yûji

doi:10.1007/s10725-005-6324-2

Cited by 197 publications

(133 citation statements)

References 15 publications

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“…However, the bean seeds germination was reduced only in the presence of Cd, while these seeds seemed to be more tolerant to Fe even at high metal concentrations. The negative effect of metals on seed germination was reported by different authors (Mathur et al, 1987;Iqbal, Mehmood, 1991;Athar, Masood, 2002;Li et al, 2005;Datta et al, 2011). Many other authors have explained the effect of metals on seeds germination as lowering of water uptake and transport (Bewley, Black, 1983;Becerril et al, 1989), or causing death or at least an embryonic damage (Wierzbicka, Obidzinska, 1998).…”

Section: Discussionmentioning

confidence: 69%

The Effect of Cd, Zn and Fe on Seed Germination and Early Seedling Growth of Wheat and Bean

Rasafi

Nouri

Bouda

et al. 2016

Ekológia (Bratislava)

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El Rasafi T., Nouri M., Bouda S., Haddioui A.: The effect of Cd, Zn and Fe on seed germination and early seedling growth of wheat and bean. Ekológia (Bratislava), Vol. 35, No. 3, p. 213-223, 2016. This study was conducted to evaluate the effect of metals on wheat and bean species. The method uses seed germination and early seedling growth of these plants in the presence of various levels (10, 50, 100, 250, 500, 750 and 1000 mg/L) of Cadmium (Cd), Iron (Fe) and Zinc (Zn). The inhibition caused by these metals was depending on the concentration used, the metal itself and the plant species. The species had reduced seed germination, root and shoot lengths, tolerance index and percentphyto-toxicity with increasing concentrations of metals. Cadmium was determined to be the most inhibitory metal on these parameters. This metal affected significantly the germination, root and shoot length of the species tested, as well as the tolerance index and percentphytotoxicity starting from 50 mg Cd/l. Under the Iron stress, in general, the inhibition of germination and root length of wheat was reduced from 500 mg Fe/l. The results showed also that the inhibitory effect of increase of Zn levels was seen in root, shoot and tolerance indices. The findings also revealed that the metal toxicity was as follow: Cd > Fe > Zn. Regarding species, the results showed that bean seemed to be more tolerant to the increase of the three metals than wheat.

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Section: Discussionmentioning

confidence: 69%

The Effect of Cd, Zn and Fe on Seed Germination and Early Seedling Growth of Wheat and Bean

Rasafi

Nouri

Bouda

et al. 2016

Ekológia (Bratislava)

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“…Commonly, the stadium of germination inside the life cycle of the plant is very well protected against various stresses. Nevertheless, after the inhibition of subsequent plant development processes, the plants become, generally, sensible to the stress by Cd (LI et al, 2005). In this study, there were no possible damages in the activities of β and α amylases, what did not compromise the respiration and did not inhibit the growth of the embryonic axis and the seed radicles (GUIMARÃES et al, 2008), thus .…”

Section: Resultsmentioning

confidence: 52%

Tolerance to cadmium in the germination and development of jack beans

Rossi¹,

Lagôa²,

Schiavinato³

2012

RCA

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Cadmium (Cd) is a metal that contaminates the environment mainly through agroindustrial, metallurgical and chemical industrial activities. It can affect mineral absorption by plants, the stomatal aperture, photosynthesis and water balance by reducing the crop yield. Aiming at the discovery of new species able to tolerate Cd, this study evaluated the germination and development of jackbean plants in the presence of Cd to determine whether there is tolerance to this metal. Seeds and seedlings of this species were grown in plastic pots containing sand with Cd concentrations of 0, 500 and 2000 µmol L -1 applied as CdCl 2 .2.5H 2 O. The experiments were conducted in a greenhouse under natural photoperiod conditions. Percent germination was close to 100% 13 days after sowing. Seedlings accumulated much of the applied Cd in the shoot and produced high biomass. No alterations to the photosynthetic apparatus were observed at the lower concentrations. This indicates that jack bean plants exhibit characteristics of tolerance to Cd and that further studies should be performed to report if this species can be used as phytoremediator. RESUMO: O cádmio (Cd) é um metal que contamina o ambiente principalmente por meio das atividades agroindustriais, metalúrgicas e químicas. Ele pode afetar a absorção de minerais pelas plantas, a abertura estomática, a fotossíntese e o balanço hídrico diminuindo a produção vegetal. Visando à descoberta de novas espécies capazes de tolerar o Cd

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“…O endosperma age como mecanismo de resistência da germinação às condições ambientais adversas (Bisognin et al, 2005). O tegumento da semente e o endosperma também protegem o embrião contra a ação tóxica de metais (Li et al, 2005) e a permeabilidade varia entre espécies (Kranner & Colville, 2011). Assim, sementes pobres em endosperma se tornam mais suscetíveis às condições do meio principalmente nos primeiros estágios de desenvolvimento, como as da espécie empregada neste estudo.…”

Section: Resultsunclassified

Fitotoxicidade e citogenotoxicidade da água e sedimento de córrego urbano em bioensaio com Lactuca sativa

Rodrigues

Barbosa

Pazin

et al. 2013

Rev. bras. eng. agríc. ambient.

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RESUMOObjetivou-se, com este trabalho, avaliar a influência espacial e temporal da fitotoxicidade e da citogenotoxicidade da água e do sedimento de córrego urbano quanto às características germinativas e de crescimento inicial de Lactuca sativa. Amostras de água e de sedimento foram coletadas em 5 pontos do Córrego do Pântano (Alfenas, Minas Gerais), no período de outubro de 2010 a julho de 2011 e as concentrações dos metais Cd, Pb e Zn foram quantificadas. Os ensaios de fitotoxicidade e de citogenotoxicidade foram realizados com as amostras de água e extratos aquosos dos sedimentos. Os parâmetros avaliados foram taxa de germinação, comprimento de raízes, biomassa fresca e seca, índice mitótico e a frequência de anormalidades cromossômicas. Constataram-se maiores concentrações de Cd e Pb nas amostras de água coletadas nos meses com a ocorrência de precipitações pluviométricas. Água e sedimento apresentaram efeito fitotóxico sobre germinação, biomassa fresca e seca de Lactuca sativa. O comprimento de raízes foi estimulado e apenas as amostras de água reduziram o índice mitótico. Evidenciou-se, também, variação temporal significativa relacionada com o regime pluviométrico apenas para o teste de fitotoxicidade. Palavras-chave: alface, toxicidade, sazonalidadePhytotoxicity and cytogenotoxicity of water and sediment of urban stream in bioassay with Lactuca sativa ABSTRACT The aim of this study was to evaluate the spatial and temporal influence of the phytotoxicity and cytogenotoxicity of water and sediment of urban stream on the germination and initial growth of Lactuca sativa. Samples were collected from water and sediment at five sites of the Pântano Stream (Alfenas, Minas Gerais) during the period from October 2010 to July 2011. The concentrations of the metals Cd, Pb and Zn were quantified. Moreover, phytotoxicity and cytogenotoxicity were tested with samples of water and aqueous extracts of sediments. The evaluated end points were the germination rate, root length, fresh and dry weight, mitotic index and frequency of chromosomal abnormalities. Higher levels of Cd and Pb were verified in water samples collected during the rainy months. Water and sediment showed phytotoxic effect on germination, fresh weight and dry weight of Lactuca sativa. Root length was stimulated and only samples of water reduced the mitotic index. Significant temporal variation related to rainfall was observed only for phytotoxicity tests.

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Effects of heavy metals on seed germination and early seedling growth of Arabidopsis thaliana

Cited by 197 publications

References 15 publications

The Effect of Cd, Zn and Fe on Seed Germination and Early Seedling Growth of Wheat and Bean

The Effect of Cd, Zn and Fe on Seed Germination and Early Seedling Growth of Wheat and Bean

Tolerance to cadmium in the germination and development of jack beans

Fitotoxicidade e citogenotoxicidade da água e sedimento de córrego urbano em bioensaio com Lactuca sativa

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