Evaluation of biological activity of new synthetic brassinolide analogs

• Autorzy: Vlasankova E. , Kohout L. , Klems M. , Eder J. , Reinohl V. , Hradilik J.
• Języki publikacji: EN

Abstrakty

EN

The responses of plants to exogenous treatment with new synthetic brassinosteroids (BRs) were assessed and compared with the activity of natural 24-epibrassinolide (24-EPI). Morphological experiments on plants of pea and flax showed that the boundary between stimulatory and inhibitory concentrations of individual BRs and 24-EPI used is very narrow and differs also with the plant species. Moreover brassinosteroids can exhibit effects similar to various other plant hormones. This was proven also in our experiments, where auxin, anti-auxin and cytokinin like effects were achieved by BRs application. One of the explanations of the different morphological effects could be the influence of brassinosteroid application on the level of endogenous hormones. There are changes in the levels of indole-3-acetic acid, 6-benzylaminopurine, trans-zeatin and dihydrozeatin in rape and wheat plants caused by BR 4 and 24-EPI application, but there is no general trend explaining unequivocally their influence. The fact that all tested BRs significantly increased the dry weight accumulation in comparison with non-treated reference rape plants can be accounted for the known BRs characteristics to avoid biotic stresses.

• Wydawca: -
• Czasopismo: Acta Physiologiae Plantarum
• Rocznik: 2009
• Tom: 31
• Numer: 5
• Opis fizyczny: p.987-993,fig.,ref.

Twórcy

autor

Vlasankova E.

• Department of Plant Biology, Faculty of Agronomy, Mendel University of Agriculture and Forestry in Brno, Zemedelska 1, 613 00 Brno, Czech Republic

autor

Kohout L.

• Institute of Organic Chemistry and Biochemistry, Academy of Sciences of the Chech Republic, Fleming sq.2, 166 10 Prague, Czech Republic

autor

Klems M.

• Department of Plant Biology, Faculty of Agronomy, Mendel University of Agriculture and Forestry in Brno, Zemedelska 1, 613 00 Brno, Czech Republic

autor

Eder J.

• Institute of Experimental Botany, Academy of Sciences of the Czech Republic, Rozvojova 135, 165 02 Prague, Czech Republic

autor

Reinohl V.

• Department of Plant Biology, Faculty of Agronomy, Mendel University of Agriculture and Forestry in Brno, Zemedelska 1, 613 00 Brno, Czech Republic

autor

Hradilik J.

• Department of Plant Biology, Faculty of Agronomy, Mendel University of Agriculture and Forestry in Brno, Zemedelska 1, 613 00 Brno, Czech Republic

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