Wyniki wyszukiwania

1

Chlorophyll fluorescence response of corn seedlings to lead stress

100%

Gogolakova A., Sestkova E., Strba P., Bekesiova B.

Acta Physiologiae Plantarum

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2007

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tom 29

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nr 1 Suppl.

2

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Determination of the tolerance of sunflower to lead-induced stress

84%

Winska-Krysiak M., Koropacka K., Gawronski S.

Journal of Elementology

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2015

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tom 20

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nr 2

Six-week old sunflower seedlings, cv. Ogrodowy, were treated with 0, 15, 45 and 60 mg Pb dm-3, and then the content of lead and selected physiological and biochemical parameters were measured. Photosynthesis efficiency, water relations (intensity of transpiration, relative water content (RWC)) and gene-encoding metallothionein were measured three times after 24, 48 and 72 hours of exposure to Pb. The content of glutathione and lead was analysed after 72 hours’ exposure to Pb. Most of the lead uptake was accumulated in the roots, then in the stems and leaves, but when re-calculated per plant dry weight, the uptake of the metal did not depend on the lead dose applied. The highest 60 mg Pb dm-3 treatment was accompanied by a significant decrease in dry weight content. Moreover, most of the lead taken up in these plants was transported to the stems and leaves (23.6% of total lead uptake). The lead doses used in this study did not affect the intensity of photosynthesis, but a decrease in transpiration and relative water content was observed. The glutathione level in the plants varied depending on the organ examined and the Pb concentration in the treatment. The expression of the metallothionein gene HaMT1 was observed in the stems only. These results indicate that the sunflower cultivar Ogrodowy is a promising plant for phytoremediation of lead-polluted soils.

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The influence of phenylpropanoid pathway metabolites on Lupinus luteus seedlings exposed to Pb stress

84%

Izbianska K., Arasimowicz-Jelonek M., Deckert J.

BioTechnologia. Journal of Biotechnology Computational Biology and Bionanotechnology

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2013

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tom 94

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nr 3

4

Dynamics of glutathione and homoglutathione changes in legume roots during lead stress

84%

Tomaszewska B., Tukendorf A., Piechalak A.

Biological Bulletin of Poznań. Supplement

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1997

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tom 34

5

Protective role of 20-hydroxyecdysone against lead stress in Chlorella vulgaris cultures

84%

Bajguz A.

Polish Journal of Natural Sciences. Supplement

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2003

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tom 01

6

Lead stress effect on regeneration of sunflower roots in hydroponical nutrient solution and in vitro culture

84%

Strubinska J., Sniezko R.

Polish Journal of Natural Sciences. Supplement

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2003

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tom 01

7

Antioxidative defense to lead stress in subcellular compartments of pea root cells

59%

Malecka A., Jarmuszkiewicz W., Tomaszewska B.

Acta Biochimica Polonica

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2001

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tom 48

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nr 3

Lead, similar to other heavy metals and abiotic factors, causes many unfavorable changes at the subcellular and molecular levels in plant cells. An increased level of superoxide anion in Pisum sativum root cells treated with 1 mM Pb(NO3)2 evidenced oxidative stress conditions. We found increased activities of enzymatic components of the antioxidative system (catalase and superoxide dismutase) in the cytosol, mito- chondrial and peroxisomal fractions isolated from root cells of Pisum sativum grown in modified Hoagland medium in the presence of lead ions (0.5 or 1 mM). Two isoenzyme forms of superoxide dismutase (Cu,Zn-SOD and Mn-SOD) found in different subcellular compartments of pea roots were more active in Pb-treated plants than in control. Increased amount of alternative oxidase accompanied by an increased activity of this enzyme was found in mitochondria isolated from lead-treated roots. These results show that plants storing excessive amounts of lead in roots defend themselves against the harmful oxidative stress caused by this heavy metal.

Ograniczanie wyników

2 Polish Journal of Natural Sciences. Supplement

1 Acta Biochimica Polonica

1 Acta Physiologiae Plantarum

1 BioTechnologia. Journal of Biotechnology Computational Biology and Bionanotechnology

1 Biological Bulletin of Poznań. Supplement

1 Journal of Elementology

2 Tomaszewska B.

1 Arasimowicz-Jelonek M.

1 Bajguz A.

1 Bekesiova B.

1 Deckert J.

1 Gawronski S.

1 Gogolakova A.

1 Izbianska K.

1 Jarmuszkiewicz W.

1 Koropacka K.

1 Malecka A.

1 Piechalak A.

1 Sestkova E.

1 Sniezko R.

1 Strba P.

1 Strubinska J.

1 Tukendorf A.

1 Winska-Krysiak M.

1 2015

1 2013

1 2007

2 2003

1 2001