Temat: carbohydrate level - Katalog OPAC zbiorów

Skocz do pozycji: 1.

Tytuł:: Seasonal patterns of free proline and carbohydrate levels in cherry laurel (Prunus laurocerasus) and ivy (Hederea helix) leaves and resistance to freezing and water deficit
Autorzy:: Bandurska, H
Plachta, M.
Woszczyk, M.
Powiązania:: https://bibliotekanauki.pl/articles/41593.pdf
Data publikacji:: 2009
Wydawca:: Polska Akademia Nauk. Instytut Dendrologii PAN
Tematy:: evergreen shrub
woody plant
seasonal change
temperature
climate
water-soluble carbohydrate
proline
free proline
carbohydrate level
leaf
cherry laurel
Prunus laurocerasus
ivy
Hedera helix
freezing resistance
water deficit
resistance
Opis:: Seasonal changes in the levels of water-soluble carbohydrates, free proline and tolerance to freezing and water deficit were studied in leaves of cherry laurel (Prunus laurocerasus) and ivy (Hedera helix). Frost and water deficit tolerance was estimated based on the measurement of electrical conductivity of aqueous media containing leaf discs that were previously treated with frost (–7°C) or polyethylene glycol solution (PEG 600), respectively. Carbohydrate content in leaves of examined species changed differently throughout the measurement period. In laurel leaves the highest carbohydrate level was found in February, while it was lowest in June. In contrast, in ivy leaves the highest carbohydrate content was recorded during summer (June, July), while the lowest in February. However, a lack of correlation between soluble carbohydrate level and membrane injury index was shown in this study. Free proline content in leaves of investigated species was the highest in early spring, i.e. April. The lowest level of free proline in laurel leaves was found in July, September and October, but in ivy from July to February. A negative correlation between proline content and membrane injury index observed in frost and PEG treated leaves of both species suggest that this amino acid may have resulted on membrane protection.
Źródło:: Dendrobiology; 2009, 62; 3-9
1641-1307
Pojawia się w:: Dendrobiology
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 2.

Tytuł:: The response of maize seedlings to salt stress under increasing levels of phosphorus
Autorzy:: Sacala, E.
Demczuk, A.
Grzys, E.
Powiązania:: https://bibliotekanauki.pl/articles/1189785.pdf
Data publikacji:: 2016
Wydawca:: Uniwersytet Warmińsko-Mazurski w Olsztynie / Polskie Towarzystwo Magnezologiczne im. Prof. Juliana Aleksandrowicza
Tematy:: plant response
seedling
maize
salt stress
phosphorus level
salinity
carbohydrate
protein
chlorophyll
carotenoid
Opis:: This study was conducted to evaluate the combined effect of increasing doses of phosphate and moderate salinity on the growth and some biochemical parameters of maize seedlings. The experiments were carried out on the maize variety KB 1902 grown in hydroponic cultures under controlled conditions. Salt stress was induced by 50 mmol dm-3 NaCl at three levels of KH2PO4 (in mmol dm-3): 1.0 (standard dose in a nutrient solution), 0.25 (decreased dose), 2.0 (increased dose). After 7 days of cultivation, the plants were harvested, growth parameters were examined and assessments were made of the concentrations of photosynthetic pigments, total protein, soluble carbohydrates and free phosphate. Salt stress caused a significant reduction in the fresh and dry weight of plants, ranging from 33-45% in comparison to the plants grown without NaCl, irrespective of external phosphate concentrations. Concentrations of photosynthetic pigments and total proteins were unaffected by salinity, regardless of the external phosphorus levels. The two higher concentrations of Pi (1.0 and 2.0 mmol dm-3) in the saline nutrient medium resulted in a marked accumulation of phosphorus in the leaves of maize, whereas the lowest level of Pi (1/4 of the standard dose in the nutrient solution) had no effect on the phosphorus content. Both the increased (2 P) and decreased (1/4 P) phosphorus concentration in the external medium induced a significant increase in the content of soluble carbohydrates in the leaves of maize grown under salt stress. In brief, the response of the maize variety KB 1902 to NaCl stress at the initial stage of growth was not found to have been modified by the examined doses of phosphorus, and there was no relationship between NaCl and the increasing doses of phosphate.
Źródło:: Journal of Elementology; 2016, 21, 1; 185-194
1644-2296
Pojawia się w:: Journal of Elementology
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 3.

Tytuł:: The response of maize seedlings to salt stress under increasing levels of phosphorus
Autorzy:: Sacala, E.
Demczuk, A.
Grzys, E.
Powiązania:: https://bibliotekanauki.pl/articles/15037.pdf
Data publikacji:: 2016
Wydawca:: Uniwersytet Warmińsko-Mazurski w Olsztynie / Polskie Towarzystwo Magnezologiczne im. Prof. Juliana Aleksandrowicza
Tematy:: plant response
seedling
maize
salt stress
phosphorus level
salinity
carbohydrate
protein
chlorophyll
carotenoid
Opis:: This study was conducted to evaluate the combined effect of increasing doses of phosphate and moderate salinity on the growth and some biochemical parameters of maize seedlings. The experiments were carried out on the maize variety KB 1902 grown in hydroponic cultures under controlled conditions. Salt stress was induced by 50 mmol dm-3 NaCl at three levels of KH2PO4 (in mmol dm-3): 1.0 (standard dose in a nutrient solution), 0.25 (decreased dose), 2.0 (increased dose). After 7 days of cultivation, the plants were harvested, growth parameters were examined and assessments were made of the concentrations of photosynthetic pigments, total protein, soluble carbohydrates and free phosphate. Salt stress caused a significant reduction in the fresh and dry weight of plants, ranging from 33-45% in comparison to the plants grown without NaCl, irrespective of external phosphate concentrations. Concentrations of photosynthetic pigments and total proteins were unaffected by salinity, regardless of the external phosphorus levels. The two higher concentrations of Pi (1.0 and 2.0 mmol dm-3) in the saline nutrient medium resulted in a marked accumulation of phosphorus in the leaves of maize, whereas the lowest level of Pi (1/4 of the standard dose in the nutrient solution) had no effect on the phosphorus content. Both the increased (2 P) and decreased (1/4 P) phosphorus concentration in the external medium induced a significant increase in the content of soluble carbohydrates in the leaves of maize grown under salt stress. In brief, the response of the maize variety KB 1902 to NaCl stress at the initial stage of growth was not found to have been modified by the examined doses of phosphorus, and there was no relationship between NaCl and the increasing doses of phosphate.
Źródło:: Journal of Elementology; 2016, 21, 1
1644-2296
Pojawia się w:: Journal of Elementology
Dostawca treści:: Biblioteka Nauki

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