Liečivé rastliny v meniacich sa environmentálnych podmienkach

Vliv biotických a abiotických stresorů na vlastnosti rostlin 11.5.2005
The influence of erythromycin and kinetin on the content of
photosynthetic pigments in Sinapis alba L. cotyledons
Key words: chlorophyll, erythromycin, karotenoids, kinetin, Sinapis alba L., senescence
Summary
The erythromycin inhibits the proteosynthesis in chloroplasts. This process which is
conected with a decrease of photosynthetic pigments in leaves accelerates the senescence. On the
other side kinetin stimulates the synthesis of chlorophyll and makes the senescence lower. The
aplication of kinetin diminishes the erythromycin infuence.
Our results show that the chlorophyll content calculated to the fresh mass decreased by an
aplication of erythromycin. However this dependance was not the same for a dry mass. In the
majority of observed variants kinetin assuages the influence of erythromycine. This fact confirms
the increased content of photosynthetic pigments. This tendency was the most remarkable in the
variant of erythromycin 10 -4 M + kinetín 10 -4 M, where the content of chlorophylls increased about
43%.
Poďakovanie
Uvedené výsledky sú podporované grantovou agentúrou VEGA No 1/0003/03.
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