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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

100%

Lahuta L. B., Gorecki R. J., Horbowicz M.

Acta Physiologiae Plantarum

2005

tom 27

nr 4A

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.

Mini atlas chwastow

75%

Agrochemia

1995

nr 02

19-20

Ograniczanie wyników

1 Acta Physiologiae Plantarum

1 Agrochemia

1 Gorecki R. J.

1 Horbowicz M.

1 Lahuta L. B.

1 2005

1 1995

Wyniki wyszukiwania

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

Mini atlas chwastow