1993
DOI: 10.1111/j.1469-8137.1993.tb03757.x
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Fructan exohydrolase from grasses

Abstract: SUMMARYIn grasses, fructan reserves are mobilized from vegetative plant parts during seasonal growth, after defoliation during grazing and from stems during seed filling. Well-illuminated leaves show a diurnal pattern of fruetan accumulation during the light and mobilization during the dark. In expanding leaves, fructans are accumulated in cells of the elongation zone and when mobilized are considered to contribute assimilate for synthetic processes. Even in leaves which do not contain high fructan concentrati… Show more

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Cited by 54 publications
(40 citation statements)
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References 73 publications
(171 reference statements)
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“…The current findings in relation to water stress and the earlier observations concerned with the response to a change in the source-sink balance (Willenbrink et al, 1998) tend to support the suggestion by Schnyder (1993) that the onset of carbon (C) loss from the stem fructan pools requires the induction of FEH as observed in other grass species. However there were similar changes in the activity of INV and this enzyme could also be involved in fructan metabolism (Simpson & Bonnett, 1993).…”
Section: mentioning
confidence: 87%
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“…The current findings in relation to water stress and the earlier observations concerned with the response to a change in the source-sink balance (Willenbrink et al, 1998) tend to support the suggestion by Schnyder (1993) that the onset of carbon (C) loss from the stem fructan pools requires the induction of FEH as observed in other grass species. However there were similar changes in the activity of INV and this enzyme could also be involved in fructan metabolism (Simpson & Bonnett, 1993).…”
Section: mentioning
confidence: 87%
“…The overall sucrose content did not appear to fall and on this basis a sucrose control system (Simpson & Bonnett, 1993) appears not to be operating. However sucrose concentration might vary widely between different tissues in the stem, often occurring in greatest amounts in the vascular tissue (Wardlaw, 1990 ;Hendrix, 1995 ;Verscht et al, 1998).…”
Section: mentioning
confidence: 93%
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“…Our results suggest the invertase activity is similarly sensitive to inhibition by pyridoxal (64 % inhibition by 10 mol m −$ ) as true invertases. Some invertases also have fructan exohydrolase activity (FEH) Simpson and Bonnett, 1993) although sucrose inhibitable FEH without invertase activity has been characterized . The activity of the P. platyphylla enzyme against fructan has not yet been determined so its possible role in fructan breakdown needs further investigation.…”
Section: Response Of Soluble Carbohydrates To Desiccation Water Strementioning
confidence: 99%