The trisaccharide fraction of some monocotyledons

Bacon, J. S. D.

doi:10.1042/bj0730507

Cited by 69 publications

(21 citation statements)

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“…In addition to Asparagus officinalis and Leucojum spp., members of tbe Liliaceae and Gramineae contain botb isokestose and neokestose (Darbysbire & Henry, 1978a;Sbiomi et al, 1976;Bacon, 1959), and some grasses also contain traces of kestose (Bacon, 1959). Tbe bigber oligosaccbarides from sucb plants may also occur as multiple series.…”

Section: -2mentioning

confidence: 99%

“…Tbe bigber oligosaccbarides from sucb plants may also occur as multiple series. Bacon (1959) suggested tbat individual size classes of fructans from Lolium perenne and Allium cepa could be resolved into multiple forms by cbarcoal/celite column cbromatograpby and, in Lolium temulentum, separation by thin layer cbromatograpby (TLC) indicates tbe presence of two oligosaccbaride series, one apparently based upon isokestose and tbe otber unidentified (Pollock, 1982a). Tbe bigb molecular weight polymer from L. temulentum does not contain tbe [i-\,2 linkages cbaracteristic of tbe isokestose series (C. J. Pollock & R. Horgan, unpublisbed observations) but the range of size over wbicb botb series are found bas not been determined.…”

Section: -2mentioning

confidence: 99%

“…Separation methods were based upon the differential solubility of fructans of different sizes in ethanol, and it proved difficult to obtain pure preparations which were free from sucrose and yet representative of the size distribution of the native polymer (Pollock, 1984a). The development of separation techniques based upon paper chromatography (Bacon, 1959), gel permeation chromatography (GPC) (Darbyshire & Henry, 1978a) and high performance liquid chromatography (HPLC) (Pollock, 1982a) has assisted the understanding of the structural relationships between fructans of different sizes, but the limited range of plant species for which detailed information is available has tended to concentrate attention upon the simplest and most easily characterized forms.…”

Section: Chemical and Physical Propertiesmentioning

confidence: 99%

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Tansley Review No. 5 Fructans and the Metabolism of Sucrose in Vascular Plants

1986

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SUMMARY The occurrence, structure and metabolism of fructose polymers in tissues of vascular plants are discussed in relation to the metabolism of sucrose. Distinctions are made between long‐term and short‐term storage of such polymers and the regulatory mechanisms which govern accumulation are examined. The roles of various fructosyltransferases in the synthesis of the different fructan structures from sucrose are outlined. The potential selective advantages of the possession of fructan metabolism in different species are assessed with reference to possible roles as cryoprotectants, in osmotic control and as storage carbohydrates whose metabolism can continue at low temperatures (0 to 5°C). It is concluded that the complexity and variety of fructan structures and of the associated enzyme systems has resulted in an incomplete understanding of their physiology and biochemistry, but their significance as an alternative storage polysaccharide in both leaves and storage organs should not be underestimated.

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Section: -2mentioning

confidence: 99%

Section: -2mentioning

confidence: 99%

Section: Chemical and Physical Propertiesmentioning

confidence: 99%

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Tansley Review No. 5 Fructans and the Metabolism of Sucrose in Vascular Plants

1986

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“…Fructose-ohgomers (fructo-oligosaccharides (DP 3-c. 10)) together with glucose, fructose and sucrose are contained in onion, which is one of the most widely distributed liliaceous plants in the world (Bacon, 1957(Bacon, , 1959Bose & Shrivastava, 1961;Darbyshire & Henry, 1978). The distribution of fructo-oligosaccharides in onion leaf-bases has been studied, and fructo-oligosaccharide contents were found to be higher in younger leaf-bases (inner) than in older (outer) leaf-bases (Bacon, 1959;Darbyshire & Henry, 1978).…”

Section: Introductionmentioning

confidence: 99%

Fructo‐oligosaccharide content and fructosyltransferase activity during growth of onion bulbs

1997

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SUMMARYTbe accumulation of fructo-oligosaccbarides and tbe activities of fructosyltransferase (sucrose: sucrose lpfructosyltransferase (SST), l^-fructosyltransferase (lp-FT) and 6fj-fructosyltransferase (6g-FT)) in tbe bulbs of tbree onion cultivars were investigated from June to September 1993. Tbe total fructo-oligosaccbaride content increased from June until August, tben decreased in September, except in one cultivar. Tbe levels of neokestose and its related tetrasaccbarides (lp,6Q-di-/5-D-fructofuranosyl sucrose and 6(j(l-y5-D-fructofuranosyl)2Sucrose) were bigber tban tbose of 1-kestose and nystose tbrougbout growtb. Tbe activities of 6(j-FT, l^-FT and SST were bigb in June and July, tben decreased; SST activity was very low in September. Tbe activity ratios of 6g-FT to lj,-FT varied between 1-86 and 2-65 over tbe growtb period. Two trisaccbarides, tbree tetrasaccbarides and four pentasaccbarides were identified, togetber witb a mixture of bexa-and beptasaccbarides, all of wbicb were syntbesized in vitro from 0-1 M sucrose by an enzyme preparation of onion bulbs barvested in August. Octa-and nonasaccbarides otber tban tbe saccbarides formed from sucrose were also syntbesized from O'l M 1-kestose or 0-1 M neokestose. All tbe saccbarides produced from sucrose, 1-kestose or neokestose by tbe crude enzyme prepared from onion bulbs were identical to tbe saccbarides occurring naturally in onion bulbs.

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“…4) (Bacon, 1959;Boscher, 1969), tandis que le galactose et le xylose ont été identifiés dans certains glycosides (Starke et Herrmann, 1976;Harmatha et al, 1987). Le saccharose est connu comme étant très stimulant, de même que, à un degré moindre, le glucose et le fructose (Bernays et Simpson, 1982;Ladd, 1986 (House, 1974).…”

Section: Introductionunclassified