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1
Artykuł dostępny w postaci pełnego tekstu - kliknij by otworzyć plik
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Studies on soluble carbohydrates in yellow lupin [Lupinus luteus L.] seeds of different age

100%
Zalewski K., Lahuta L. B.
Acta Societatis Botanicorum Poloniae
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2007
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tom 76
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nr 4
309-312
Yellow lupin seeds cv. Juno were stored under laboratory conditions for 2 month, 4, 6 and 8 years. Eighteen soluble carbohydrates were identified in embryonic axes and cotyledons of different age seeds. The concentration of soluble carbohydrates in analysed seeds ranged from 25 to 34% of dry mass. Axes contained more carbohydrates than cotyledons. Stachyose dominated in axes, and verbascose - in cotyledons. Other detected galactosides were: galactinol, galactosyl pinitols and galactosyl chiro-inositols (fagopyritols), but their content was several-fold lower than that of RFOs (in both axes and cotyledons tissues). The concentration of soluble carbohydrates indicated, that sucrose to RFOs mass ratio, or other changes in sugars composition are not indicators of seed storage.
2

Alpha-D-galactosidase activity in stored yellow lupin [Lupinus luteus L.] seeds

100%
Lahuta L. B., Gorecki R. J., Michalczyk D., Piotrowicz-Cieslak A. I.
Electronic Journal of Polish Agricultural Universities. Series Agronomy
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2000
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tom 03
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nr 1
The activity of alpha-D-galactosidase and contents of soluble saccharides were studied in ‘Juno’ yellow lupin (Lupinus luteus L.) seeds stored. Seeds harvested at three stages of maturity (15, 25, 35 days after flowering - DAF) were stored at –21°C for two years (frozen immediately after harvest) or were dried after harvest to 8% of water content and stored at +20°C for 5 and 6 years. A high alpha-D-galactosidase activity in maturing and mature seeds could have been one of the causes of decreasing viability and vigour of the seeds stored. The hydrolysis of raffinose oligosaccharides decreased the ratio of these saccharides to sucrose. The decrease in the content of raffinose oligosaccharides was accompanied by an increase in galactosyl cyclitol contents.
3
Artykuł dostępny w postaci pełnego tekstu - kliknij by otworzyć plik
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Cyclitols, galactosyl cyclitols and raffinose family oligosaccharides in Mexican wild lupin seeds

100%
Piotrowicz-Cieslak A. I., Lopez P. M. G., Gulewicz K.
Acta Societatis Botanicorum Poloniae
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2003
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tom 72
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nr 2
Ten to 16 ethanol-soluble carbohydrate components were identified in the seeds of six Mexican wild lupins. The analysed carbohydrates included: monosaccharides, disaccharides, cyclitols, galactosyl cyclitols and raffinose family oligosaccharides. Stachyose and sucrose were the main carbohydrate component in the Lupinus montanus, L. rotundiflorus, L. exaltatus, L. mexicanus and L. elegans seeds. Only trace quantities of verbascose were detected in Lupinus mexicanus seeds. The analysed seeds accumulated 38 to 78 mg/g d.m. carbohydrates. The raffinose family oligosaccharides constituted 41 to 85.2% of the identified carbohydrate component pool. The analysed Lupinus seeds contained 3 to 8 unidentified carbohydrate components.
4
Artykuł dostępny w postaci pełnego tekstu - kliknij by otworzyć plik
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Biosynthesis of raffinose family oligosaccharides and galactosyl pinitols in developing and maturing seeds of winter vetch [Vicia villosa Roth.]

80%
Lahuta L. B.
Acta Societatis Botanicorum Poloniae
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2006
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tom 75
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nr 3
219-227
Changes in the accumulation of two types of α-D-galactosides: raffinose family oligosaccharides and galactosyl pinitols were compared with changes in the activities of galactosyltransferases during winter vetch (Vicia villosa Roth.) seed development and maturation. Occurrence of galactinol and raffinose in young seeds and changes in activities of galactinol synthase and raffinose synthase during seed development indicated that formation of raffinose oligosaccharides (RFOs) preceded synthesis of galactopinitols. Although transfer of galactose residues into raffinose oligosaccharides increased as seeds were maturing, at late stages of seed maturation the accumulation of galactopinitols was preferred to that of RFOs. In the present study, activities of enzymes transferring galactose moieties from galactinol to D-pinitol forming galactopinitol A, and further transfer of galactose moieties from galactinol to mono- and di-galactopinitol A were detected throughout seed development and maturation. This is a new observation, indicating biological potential of winter vetch seeds to synthesize mono-, di- and tri-galactosides of D-pinitol in a pathway similar to RFOs. The pattern of changes in activities of stachyose synthase and enzymes synthesizing galactopinitols (named galactopinitol A synthase and ciceritol synthase) suggests that formation of stachyose, mono- and di-galactopinitol A (ciceritol) is catalyzed by one enzyme. High correlation between activities of verbascose synthase and enzyme catalyzing synthesis of tri-galactopinitol A from galactinol and ciceritol (named tri-galactopinitol A synthase) also suggests that biosynthesis of both types of tri-galactosides was catalyzed by one enzyme, but distinct from stachyose synthase. Changes in concentrations of galactosyl acceptors (sucrose and D-pinitol) can be a factor which regulates splitting of galactose moieties between both types of galactosides in winter vetch seeds.
5
Artykuł dostępny w postaci pełnego tekstu - kliknij by otworzyć plik
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Cyclitols in maturing grains of wheat, triticale and barley

80%
Lahuta L. B., Goszczynska J.
Acta Societatis Botanicorum Poloniae
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2010
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tom 79
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nr 3
In the present study, the feeding of stem-flag leaf-ear explants of wheat, triticale and barley with d-chiro-inositol and d-pinitol was used for modification of the composition of soluble carbohydrates in grains without genetic transformation of plants. Maturing grains indicated ability to uptake exogenously applied cyclitols, not occurring naturally in cereal plants, and synthesized their a-d-galactosides. The pattern of changes in soluble carbohydrates during grain maturation and germination was not disturbed by the uptake and accumulation of cyclitols. Both, d-chiro-inositol and d-pinitol as well as their a-d-galactosides can be an additional pool of soluble carbohydrates accumulated by maturing grains, without decreasing seeds viability. This is the first report indicating the possibility of introduction of cyclitols with potentially human health benefits properties into cereal grains.
6
Artykuł dostępny w postaci pełnego tekstu - kliknij by otworzyć plik
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Different effects of soil drought on soluble carbohydrates of developing Lupinus pilosus and Lupinus luteus embryos

80%
Piotrowicz-Cieslak A. I., Michalczyk D. J., Adomas B., Gorecki R. J.
Acta Societatis Botanicorum Poloniae
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2007
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tom 76
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nr 2
The aim of this study was to compare the accumulation of soluble carbohydrates in embryos of two lupin species: cultivated Lupinus luteus (cv. Juno) and wild L. pilosus, developing on plants grown under normal soil humidity and soil drought. All analysed seeds accumulated soluble carbohydrates, including: monosaccharides, sucrose, cyclitols, galactosyl cyclitols and raffinose family oligosaccharides. Soil drought caused a nearly two-fold increase of soluble carbohydrate contents in both species. L. pilosus embryos however, responded to water deficiency by increasing the accumulation of cyclitols and galactosyl cyclitols, whereas L. luteus embryos enhanced accumulation of cyclitols and raffinose family oligosaccharides.
7
Artykuł dostępny w postaci pełnego tekstu - kliknij by otworzyć plik
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Composition of seed soluble carbohydrates and ultrastructural diversity of testa in lupins from the Mediterranean Region

80%
Piotrowicz-Cieslak A. I.
Acta Societatis Botanicorum Poloniae
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2005
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tom 74
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nr 4
This article present a comparison of soluble sugar levels in seeds of Lupinus atlanticus, Lupinus cosentinii, Lupinus palaestinus and Lupinus pilosus, Lupinus hispanicus subsp. hispanicus and Lupinus luteus of Juno variety. Considering that sugars are accumulated in embryos, only the embryonic tissues were used for biochemical analyses. Additionally, the share of testa and embryo in seed tissues was evaluated. The seed-coat thickness was measured using scanning electron microscopy. The seed coat had the largest share in seeds of Lupinus pilosus and Lupinus palaestinus, and the least share in seeds of Lupinus hispanicus subsp. hispanicus and Lupinus luteus of Juno variety. In the seed of Lupinus pilosus the thickness of the seed coat was 1100 µm, while in Lupinus luteus it was 300 µm. The analysed Lupinus seeds accumulated from 73 mg/g d.m. (dry matter of seed embryo) to 155 mg of soluble sugars/g d.m. The highest quantity of oligosaccharides of the raffinose series was found in seeds of Lupinus luteus, while the lowest amount in seed of Lupinus palaestinus. Galactosyl cyclitols appeared in largest amount in seeds of Lupinus palaestinus and Lupinus pilosus, appropriately 41.93 and 33.75 mg/g dm. The lowest amount of galactosyl cyclitols appeared in Lupinus atlanticus, Lupinus cosentinii and Lupinus hispanicus.
8

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

80%
Lahuta L. B., Gorecki R. J., Horbowicz M.
Acta Physiologiae Plantarum
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2005
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tom 27
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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.
9
Artykuł dostępny w postaci pełnego tekstu - kliknij by otworzyć plik
Content available

Carbohydrates in Colobanthus quitensis and Deschampsia antarctica

80%
Piotrowicz-Cieslak A. I., Gielwanowska I., Bochenek A., Loro P., Gorecki R. J.
Acta Societatis Botanicorum Poloniae
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2005
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tom 74
|
nr 3
Eight to nineteen ethanol-soluble carbohydrate components were identified in vegetative tissues of Colobanthus quitensis and Deschampsia antarctica. The analysed carbohydrates included: monosaccharides, cyclitols, galactosyl cyclitols, raffinose family oligosaccharides, lichnose family oligosaccharides, kestose family oligosaccharides. The analysed vegetative tissues accumulated from 447 to 139 mg/g d.m. soluble carbohydrates in Colobanthus quitensis, Deschampsia antarctica respectively. The raffinose family oligosaccharides constituted 53.3% in Colobanthus quitensis of the identified soluble carbohydrate component pool. Vegetative tissues accumulated starch in Colobanthus quitensis 20.6 mg/g d.m. and 261.6 mg/g d.m. in Deschampsia antarctica. Anatomical and ultrastructural observations of vegetative part of Colobanthus quitensis and Deschmpsia antarctica revealed the presence of various ergastic materials in intercellular spaces, cell walls and protoplasts. Various parts of these plants contain insoluble, PAS positive polysaccharides in intercellular spaces and in cell walls. Chloroplasts of analysed tissues contained starch. Less starch was visible in young, growing parts of shoots of Colobanthus quitensis and Deschmpsia antarctica, more starch appears in mature, differentiated parts.
10

Ecophysiological conditions of seed dormancy of weeds from the Asteraceae family

71%
Bochenek A.
Rozprawy i Monografie. Uniwersytet Warmińsko-Mazurski w Olsztynie
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2010
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tom 155
1-126
11

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

61%
Lahuta L. B., Goszczynska J.
Zeszyty Problemowe Postępów Nauk Rolniczych
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2010
|
tom 545
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.
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