Wyniki wyszukiwania

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Magnetic resonance imaging [MRI] as a method for determination of freezing injury in strawberry crowns

100%

Nestby R., Gribbestad I., Bjorgum R.

Acta Physiologiae Plantarum

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1997

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tom 19

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nr 4

In an experiment with controlled freezing, strawberry plants were exposed to 0, −8, −12, −16 and −20°C at a freeze and thaw rate of 2 °C/hour in March/April 1996. Crowns from the cultivar ‘Korona’ were examined using magnetic resonance imaging (MRI), showing a gradual increase of signal intensity from the centre of the crowns, as a result of the temperature drop, which might be caused by lipids. The increase in signal intensity was in accordance with the tissue browning of crowns, which increased substantially when the temperature dropped below −12 °C. A similar reaction was shown in a field experiment comparing wintercovered and not wintercovered strawberry plants. The plants which had been exposed to temperatures between −10 and −16 °C were severely injured. This demonstrates that MRI has a potential as an objective method to determine freeze injury in the field, by «calibrating» the MRI instrument to freezing profiles in controlled experiments.

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Antioxidant activity responses under freezing stress in two potato cultivars with different sensibility

86%

Mora-Herrera M., Martinez-Gutierrez R., Lopez-Delgado H.

BioTechnologia. Journal of Biotechnology Computational Biology and Bionanotechnology

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2013

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tom 94

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nr 2

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Snow mold, Typhula ishikariensis can grow at sub-lethal high temperature after freezing stress

72%

Hoshino T., Tronsmo A. M., Matsumoto N., Goda T., Ohgiya S., Ishizaki K.

Biological Bulletin of Poznań. Supplement

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1997

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tom 34

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Environmental pollution changes in membrane lipids, antioxidants and vitality of Scots pine [Pinus sylvestris L.] pollen

58%

Pukacki P. M., Chalupka W.

Acta Societatis Botanicorum Poloniae

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2003

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tom 72

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nr 2

Investigations were carried out on pollen grains of Scots pine (Pinus sylvestris L.) collected from trees at 1.5, 3, 4 km and control, 20 km from the Luboń factory producing mineral fertilisers. The percentage of germination of pollen formed close to the pollution source was ca 20% lower compared to the control pollen. Lowered vitality of the pollen was effected in changes of the structure of cytoplasmic membranes. Pollen from the polluted area contained ca 15% less total phospholipids, mainly phosphatidylcholine and phosphatytidylinositol and had a lower content of soluble proteins and less of low molecular antioxidants, such as thiols and ascorbic acid. Composition of total fatty acid in phospholipids fractions showed a significant reduction in the degree of unsaturation of fatty acids. Pollen originating from the polluted area and stored at -30°C showed considerably stronger degradation of cytoplasmic membranes than control.

Ograniczanie wyników

1 Acta Physiologiae Plantarum

1 Acta Societatis Botanicorum Poloniae

1 BioTechnologia. Journal of Biotechnology Computational Biology and Bionanotechnology

1 Biological Bulletin of Poznań. Supplement

1 Bjorgum R.

1 Chalupka W.

1 Goda T.

1 Gribbestad I.

1 Hoshino T.

1 Ishizaki K.

1 Lopez-Delgado H.

1 Martinez-Gutierrez R.

1 Matsumoto N.

1 Mora-Herrera M.

1 Nestby R.

1 Ohgiya S.

1 Pukacki P. M.

1 Tronsmo A. M.

1 2013

1 2003

2 1997

Magnetic resonance imaging [MRI] as a method for determination of freezing injury in strawberry crowns

Antioxidant activity responses under freezing stress in two potato cultivars with different sensibility

Snow mold, Typhula ishikariensis can grow at sub-lethal high temperature after freezing stress

Environmental pollution changes in membrane lipids, antioxidants and vitality of Scots pine [Pinus sylvestris L.] pollen