High concentrations of D-pinitol or D-chiro-inositol inhibit the biosynthesis of raffinose family oligosaccharides in maturing smooth tare [Vicia tetrasperma [L.] Schreb.] seeds

• Autorzy: Lahuta L B , Gorecki R.J. , Horbowicz M.
• Języki publikacji: EN

Abstrakty

EN

In the present study we have investigated the effect of exogenous cyclitols on accumulation of their galactosides and raffinose family oligosaccharides (RFOs) in maturing smooth tare (Vicia tetrasperma [L.] Schreb) seeds. Feeding D-pinitol to pods of smooth tare increased the amount of free D-pinitol and its galactosides: galactopinitol A, galactopinitol B, di- and trigalactopinitol A in seeds. Similarly, feeding D-chiro-inositol, which does not occur naturally in Vicia seeds, resulted in the transport of this cyclitol in the seed, and caused accumulation of high levels of D-chiro-inositol galactosides (fagopyritol B1, B2 and B3). Accumulation of both cyclitols and their galactosides drastically reduced accumulation of verbascose and, to a lesser extent, stachyose and di-galactosyl- myo-inositol. Feeding D-chiro-inositol also decreased accumulation of di- and tri-galactosyl pinitols, naturally occurring in seeds. Inhibition of RFOs accumulation by elevated levels of free cyclitols indicates competition between biosynthesis of both types galactosides, and similarity of both biosynthetic pathways in smooth tare seeds.

Słowa kluczowe

EN

plant physiology; Vicia tetrasperma; D-chiro-inositol; smooth tare; maturing seed; D-pinitol; oligosaccharide; biosynthesis; cyclitol; seed; fagopyritol; galactopinitol; concentration; biotechnology; high concentration

• Wydawca: -
• Czasopismo: Acta Physiologiae Plantarum
• Rocznik: 2005
• Tom: 27
• Numer: 4A
• Opis fizyczny: p.505-513,fig.,ref.

Twórcy

autor

Lahuta L B

• University of Warmia and Mazury, Oczapowskiego 1A, 10-957 Olsztyn, Poland

autor

Gorecki R.J.

autor

Horbowicz M.

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