Potato genetically modified by 14-3-3 protein repressio in growing rat diets. Part I: Chemical composition and digestibility of nutrients

• Autorzy: Kosieradzka I. , Sawosz E. , Szopa J. , Vasko V.

Warianty tytułu

PL

Ziemniaki genetycznie modyfikowane przez represje bialka 14-3-3 w dietach rosnacych szczurow. Czesc I: Sklad chemiczny i strawnosc skladnikow pokarmowych

• Języki publikacji: EN

Abstrakty

EN

A study was undertaken to assess the nutritional value of tubers of transgenic lines of potato cv. Desiree with repression of a and c isoforms of 14-3-3 proteins obtained by means of antisense transformations. Isoforms of 14-3-3 protein are responsible for metabolism of carbohydrates, amino acids and calcium. Repression of that protein, i.e. reduction of its synthesis in a potato plant, results in: a decrease in total protein content of tuber with a slight but favourable change in the amino acid profile, enhanced synthesis of starch, small differentiation in contents of minerals – diminished concentrations of Fe, P, and Ca. The 30% addition of dried transgenic potato tubers with repression of isoform a, c as well as a and c of 14-3-3 protein was found not to affect values of digestibility coefficients of nutrients. Repression of 14-3-3 protein was demonstrated to affect diversification of the chemical composition of tuber and contents of nutrients only to a small extent, without diminishing the nutritional value of potato tubers.

PL

Oceniano wartość pokarmową bulw transgenicznych linii ziemniaka odmiany Desiree z represją izoform a i c białka 14-3-3 uzyskanych poprzez transformacje antysensowe. Izoformy białka 14-3-3 są odpowiedzialne za metabolizm węglowodanów aminokwasów i wapnia. Efektem represji tego białka, redukcji poziomu jego syntezy w roślinie ziemniaka jest: zmniejszenie zawartości białka ogólnego w bulwie z niewielką ale korzystną zmianą profilu aminokwasowego, wzrost syntezy skrobi, niewielkie zróżnicowanie zawartości składników mineralnych – zmniejszenie koncentracji Fe, P, Ca. Nie stwierdzono wpływu 30% dodatku suszu z bulw ziemniaków transgenicznych z represją izoformy a, c oraz a i c białka 14-3-3 na wartość współczynników strawności składników pokarmowych. Represja białka 14-3-3 wpłynęła w niewielkim stopniu na zróżnicowanie składu chemicznego bulwy i zawartość składników pokarmowych nie zmniejszając wartości odżywczej bulw ziemniaków.

Słowa kluczowe

EN

chemical composition; nutrient; nutritional value; digestibility; genetically modified potato; diet; rat; potato

• Wydawca: -
• Czasopismo: Polish Journal of Food and Nutrition Sciences
• Rocznik: 2008
• Tom: 58
• Numer: 1
• Opis fizyczny: p.125-129,fig.,ref.

Twórcy

autor

Kosieradzka I.

• Warsaw University of Life Sciences, Ciszewskiego 8, 02-786 Warsaw, Poland

autor

Sawosz E.

autor

Szopa J.

autor

Vasko V.

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