Fructans in crested wheatgrass leaves

Crested wheatgrass is an important cool-season grass that has become naturalized in many semiarid regions of the western U.S. It provides ground cover and reduces soil erosion caused by water and wind. Additionally, crested wheatgrass produces important forage for livestock and wildlife on 6 to 8 mi...

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Bibliographic Details
Published in:Journal of plant physiology 2003-08, Vol.160 (8), p.843-849
Main Authors: Jerry Chatterton, N., Harrison, Philip A.
Format: Article
Language:English
Subjects:
Agropyron
Agropyron - chemistry
Agropyron cristatum
Animal and plant ecology
Animal Feed
Animal, plant and microbial ecology
Animals
Autoecology
biochemical pathways
biofurcose
Biological and medical sciences
biosynthesis
carbohydrates
conservation plants
crested wheatgrass
fructan biosynthetic pathways
fructan structures
fructans
Fructans - analysis
Fundamental and applied biological sciences. Psychology
grass
grasses
ground cover plants
Hydrolysis
inulin
kestotetraose
leaves
levan
methylation
plant extracts
Plant Leaves - chemistry
Plants and fungi
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Summary:Crested wheatgrass is an important cool-season grass that has become naturalized in many semiarid regions of the western U.S. It provides ground cover and reduces soil erosion caused by water and wind. Additionally, crested wheatgrass produces important forage for livestock and wildlife on 6 to 8 million hectars of western rangeland. It is well adapted to semiarid cold desert regions because of its cool temperature growth and drought tolerance. Understanding the biosynthesis of fructans in crested wheatgrass is important because of their likely role in both cool temperature growth and drought tolerance. Recent research described a major gene (6-SFT) in crested wheatgrass that is involved in fructan biosynthesis. 1-kestotriose, the major DP 3 fructan in crested wheatgrass, serves as the substrate for the two major DP 4 fructans, 1&6-kestotetraose and 1,1-kestotetraose. The three major DP 5 fructans are 1&6,1-kestopentaose, 1,1&6-kestopentaose and 1,1,1-kestopentaose. The major DP 6 fructan is 1&6;1&6-kestohexaose. We postulate that 1&6;1&6-kestohexaose is synthesized from the addition of a fructose to 1&6,1-kestopentaose. This paper provides structures of the various DP 3, 4, 5 and 6 fructan types produced by crested wheatgrass and provides suggested biosynthetic pathways for all major fructan linkage types present.
ISSN:0176-1617
1618-1328
DOI:10.1078/0176-1617-01127