Exogenously applied 20-hydroxyecdysone increases the net photosynthetic rate but does not affect the photosynthetic electron transport or the content of photosynthetic pigments in Tetragonia tetragonioides L.

• Autorzy: Hola D. , Kocova M. , Rothova O. , Tumova L. , Kalmar M. , Macek T.
• Języki publikacji: EN

Abstrakty

EN

Phytoecdysteroids are steroid compounds present in many plant species (sometimes in rather large amounts), but their biological role is still far from being clear. We have found that the exogenous application of 20-hydroxyecdysone (20E) to leaves of Tetragonia tetragonioides L. causes stimulation of its net photosynthetic rate (P N) but does not positively affect the photosynthetic electron transport or the content of photosynthetic pigments. The increase in P N was observed shortly after 20E treatment and was statistically significant during the 4th and 6th hours after treatment but not later, which could be perhaps caused by a strictly short-term window of opportunity for ecdysteroids to significantly affect photosynthetic processes. To our knowledge, these results are the first to suggest a new potential biological function of phytoecdysteroids—regulation of photosynthesis.

• Wydawca: -
• Czasopismo: Acta Physiologiae Plantarum
• Rocznik: 2013
• Tom: 35
• Numer: 12
• Opis fizyczny: p.3489-3495,fig.,ref.

Twórcy

autor

Hola D.

• Department of Genetics and Microbiology, Faculty of Science, Charles University in Prague, Vinicˇna´ 5, 12844 Prague 2, Czech Republic

autor

Kocova M.

• Department of Genetics and Microbiology, Faculty of Science, Charles University in Prague, Vinicˇna´ 5, 12844 Prague 2, Czech Republic

autor

Rothova O.

• Department of Genetics and Microbiology, Faculty of Science, Charles University in Prague, Vinicˇna´ 5, 12844 Prague 2, Czech Republic

autor

Tumova L.

• Department of Genetics and Microbiology, Faculty of Science, Charles University in Prague, Vinicˇna´ 5, 12844 Prague 2, Czech Republic

autor

Kalmar M.

• Department of Biochemistry and Microbiology, Faculty of Food and Biochemical Technology,Institute of Chemical Technology Prague, Technicka´ 5, 16628 Prague 6, Czech Republic

autor

Macek T.

• Department of Biochemistry and Microbiology, Faculty of Food and Biochemical Technology Institute of Chemical Technology Prague, Technicka´ 5, 16628 Prague 6, Czech Republic

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