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Cachana - rudosterka krotkodzioba z Parku Narodowego Lanin

100%

Szulecka K.

Woliera

2004

nr 10

26-29

Wyprawa do Peru z World Parrot Trust

88%

Szulecka K.

Woliera

2004

nr 12

16-21

Patagonki z Patagonii

63%

Szulecka K.

Woliera

2004

nr 07-08

34-41

Jasmonic acid affects changes in the growth and some components content in alga Chlorella vulgaris

51%

Czerpak R. , Piotrowska A. , Szulecka K.

Acta Physiologiae Plantarum

2006

tom 28

nr 3

The present study was undertaken to test the influence of exogenous applied jasmonic acid upon the growth and changes in some metabo-ites levels in the cells of green alga Chlorella vulgaris Beijerinck (Chlorophyceae). It was found, that JA in algal cells acted in a concentration-dependent manner. Treatment with JA at high concentrations range of 10⁻⁵-10⁻⁴ M, resulted in the decrease in cell number and reduction of major photosynthetic pigments, monosaccharides, soluble cellular and extracellular proteins levels as well as decrease in pH of the medium. In contrast to 10⁻⁵ and 10⁻⁴ M JA, this phytohormone applied at 10⁻⁸-10⁻⁶ M induced the increase in cell number, photosynthetic pigments and monosaccharides contents, significant accumulation and extracellular secretion of soluble proteins over control and neutralization of the medium. Quantitative changes in polypeptide pattern of total cellular proteins after treatment with the optimal concentration of 10⁻⁷ M JA on the 7th day of cultivation as analyzed by SDS-PAGE, was also observed. JA induced synthesis de novo of15 specific polypeptides with molecular weight 334-16 kDa which weren’t detected in the control. The data suggest that JA plays a important role in algal growth and development.