Effect of Heavy Metals on Inhibition of Root Elongation in 23 Cultivars of Flax (Linum usitatissimum L.)

Soudek, Petr; Katrušáková, Adéla; Sedláček, Lukáš; Petrová, Šárka; Kočí, Václav; Maršík, Petr; Griga, Miroslav; Vaněk, Tomáš

doi:10.1007/s00244-010-9480-y

Cited by 49 publications

(28 citation statements)

References 23 publications

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“…They measured root length and found approximately 51% inhibition of root elongation at a Ni concentration of 0.68 mM. A similar result was obtained by Soudek et al (2010), who verified 30 to 70% inhibition of flax (Linum usitatissimum L.) root elongation at a concentration of 0.5 mM of Ni.…”

Section: Discussionsupporting

confidence: 75%

Effects of nickel on the fern Regnellidium diphyllum Lindm. (Marsileaceae)

Droste

2012

Braz. J. Biol.

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The heterosporous fern Regnellidium diphyllum occurs in southern Brazil and some adjoining localities in Uruguay and Argentina. Currently it is on the list of threatened species in the state of Rio Grande do Sul. Anthropic alterations such as the conversion of wetlands into agricultural areas or water and soil contamination by pollutants may compromise the establishment and survival of this species. Nickel (Ni) is an essential nutrient for plants but increasing levels of this metal due to pollution can cause deleterious effects especially in aquatic macrophytes. Megaspore germination tests were performed using Meyer's solution, at concentrations of 0 (control), 0.05, 0.5, 1, 5, 10, 20, 30, 50 and 100 mg L -1 of Ni. The initial development of apomictic sporophytes was studied using solutions containing 0 (control) to 4.8 mg L -1 of Ni. A significant negative relation was observed between the different Ni concentrations and the megaspore germination/ sporophyte formation rates. Primary roots, primary leaves and secondary leaves were significantly shorter at 3.2 and 4.8 mg L -1 of Ni, when compared with the treatment without this metal. At 4.8 mg L -1, leaves also presented chlorosis and necrosis. The introduction of pollutants with Ni in the natural habitat of Regnellidium diphyllum may inhibit the establishment of plants in the initial stage of development, a problem to be considered in relation to the conservation of this species.Keywords: heavy metals, megaspore, germination, sporophyte, pollution. Efeitos do níquel sobre a filicínea Regnellidium diphyllum Lindm. (Marsileaceae) ResumoA samambaia heterosporada Regnellidium diphyllum Lindm. ocorre no Sul do Brasil e em algumas localidades vizinhas no Uruguai e na Argentina. Atualmente, consta da lista de espécies ameaçadas do Estado do Rio Grande do Sul. Alterações antrópicas -tais como a conversão de áreas úmidas em áreas de agricultura ou a contaminação de água e solo por poluentes -podem comprometer o estabelecimento e a sobrevivência da espécie. Níquel (Ni) é um nutriente essencial às plantas, mas níveis aumentados desse metal, em razão da poluição, podem causar efeitos deletérios, especialmente em macrófitas aquáticas. Testes de germinação de megásporos foram realizados usando-se solução de Meyer, em concentrações de 0 (controle); 0,05; 0,5; 1; 5; 10; 20; 30; 50; 100 mg L -1 de Ni. O desenvolvimento inicial de esporófitos apomíticos foi estudado usando-se soluções contendo 0 (controle) a 4,8 mg L -1 de Ni. Relação negativa significante foi observada entre diferentes concentrações de Ni e as taxas de germinação de megásporos/formação de esporófitos. Raízes primárias e folhas primárias e secundárias foram significantemente mais curtas a 3,2 e 4,8 mg L -1 de Ni, quando comparadas ao tratamento sem esse metal. Em 4,8 mg L -1 , folhas também apresentaram clorose e necrose. A introdução de poluentes com Ni no habitat natural de Regnellidium diphyllum pode inibir o estabelecimento de plantas em estádio inicial de desenvolvimento, um problemaa a ser consider...

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Section: Discussionsupporting

confidence: 75%

Effects of nickel on the fern Regnellidium diphyllum Lindm. (Marsileaceae)

Droste

2012

Braz. J. Biol.

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“…It is well documented that heavy-metal toxicity has an effect on seed germination, plant growth, and root elongation (Soudek et al, 2010;references therein). Metal toxicity is mediated through various mechanisms.…”

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confidence: 99%

Effects of Heavy Metals on Plant Growths and Pigment Contents in Arabidopsis thaliana

Baek¹,

Han²,

Ahn³

et al. 2012

The Plant Pathology Journal

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The effect of heavy metals on seedling growth and pigment levels was studied in Arabidopsis using essential (Cu, Mn, and Zn) and non-essential metals (Pb and Hg). Generally increasing the concentrations of the metals resulted in a gradual decrease in root and shoot lengths, a decrease in chlorophylls, an increase in anthocyanins and a fluctuation in carotenoid content depending on the metal types. The toxicity of the metals decreased in the following order: Cu > Hg > Pb > Zn > Mn. Among the five metals, Cu was exceptionally toxic and the most potent inducer of anthocyanins. Pb induced the smallest quantity of anthocyanins but it was the strongest inducer of carotenoids. It suggests that the Cu-stressed Arabidopsis may use anthocyanins as its main antioxidants while the Pb-stressed Arabidopsis use carotenoids as its main protectants. All of the five metals induced an accumulation of anthocyanins. The consistent increase in anthocyanin content in the metal-stressed Arabidpsis indicates that anthocyanins play a major role in the protection against metal stresses.

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“…Nevertheless, in excess, copper can cause disorders in plant growth and development, aff ecting key enzymes and altering nitrogen metabolism (Yruela 2005;Soudek et al 2010).…”

Section: Discussionmentioning

confidence: 99%

Germination and sporophytic development of Regnellidium diphyllum Lindm. (Marsileaceae) in the presence of copper

et al. 2013

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Regnellidium diphyllum Lindm. is a heterosporous fern growing in wetlands and humid soils that are being converted to agricultural activities. Many products that are used in agriculture contain copper, resulting in surface and groundwater contamination. Germination and initial development tests were performed using Meyer's solution containing copper sulphate at concentrations of 0 (control), 1, 5, 10, 50 and 100 mg L −1 . Th e experiment was conducted in a growth chamber at 25 ± 1°C for 28 days, with a 12/12-hour light/dark cycle and a photon fl ux density of 100 μmol m −2 s −1. Th e lowest germination rate (6%) was observed at 100 mg L −1 . Primary root growth was signifi cantly reduced at ≥ 10 mg L −1 . Secondary leaves of sporophytes grown in concentrations ≥ 5 mg L −1 were progressively shorter than were those formed by the control plants. We conclude that the release of pollutants containing copper into the natural habitats of R. diphyllum can cause phytotoxicity, threatening the establishment of populations and worsening the already vulnerable conservation status of this species.

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Effect of Heavy Metals on Inhibition of Root Elongation in 23 Cultivars of Flax (Linum usitatissimum L.)

Cited by 49 publications

References 23 publications

Effects of nickel on the fern Regnellidium diphyllum Lindm. (Marsileaceae)

Effects of nickel on the fern Regnellidium diphyllum Lindm. (Marsileaceae)

Effects of Heavy Metals on Plant Growths and Pigment Contents in Arabidopsis thaliana

Germination and sporophytic development of Regnellidium diphyllum Lindm. (Marsileaceae) in the presence of copper

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