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Wpływ egzogennych cyklitoli na skład cukrowców rozpuszczalnych i jakość fizjologiczną dojrzewających ziarniaków żyta ozimego (Secale cereale L. odmiany Picasso)

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Warianty tytułu
Effect of exogenous cyclitols on the composition of soluble carbohydrates and physiological quality of maturing rye (Secale cereale L. cv. Picasso) grains
Języki publikacji
Badano wpływ dokarmiania dojrzewających ziarniaków żyta egzogennymi cyklitolami - D-pinitolem i D-chiro-inozytolem na akumulację cukrowców rozpuszczalnych podczas wysychania eksplantatów, desykacji ziarniaków i ich przyspieszonego starzenia się. Wykazano, że cyklitole, naturalnie nieobecne w zbożach, mogą docierać z tkanek wegetatywnych do ziarniaków, a D-chiro-inozytol może być włączany w szlak biosyntezy α-D-galaktozydów, osłabiając wytwarzanie rafinozy. Pobieranie i akumulacja cyklitoli nie wywołują zaburzeń w profilu zmian cukrowców rozpuszczalnych zarówno podczas dojrzewania jak i desykacji oraz starzenia się ziarniaków. Ziarniaki gromadzące cyklitole mogą wykazywać niższą tolerancję na szybką desykację, niż ziarniaki kontrolne. Nie wykazano istotnego wpływu cyklitoli na odporność ziarniaków na test przyspieszonego starzenia się.
The effect of maturing rye explants fed with exogenously cyclitols: D-pinitol and D-chiro-inositol on the accumulation of soluble carbohydrates during explants drying, grains desiccation and grains accelerated ageing was investigated. Results indicated that cyclitols, naturally not occurring in cereals, can be transported through vegetative tissues into developing grains and D-chiro-Inositol could be incorporated into α-D-galactosides biosynthetic pathway thus decreasing the accumulation of raffinose. The pattern of changes in soluble carbohydrates during grains maturation, desiccation or ageing is not disturbed by cyclitols uptake and accumulation. Grains containing new cyclitols can be less tolerant to fast desiccation, than the control grains. Cyclitols are not involved in grain resistance to the accelerated ageing.
Opis fizyczny
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