scholarly journals Molecular Dissection of Variation in Carbohydrate Metabolism Related to Water-Soluble Carbohydrate Accumulation in Stems of Wheat

2007 ◽  
Vol 146 (2) ◽  
pp. 441-454 ◽  
Author(s):  
Gang-Ping Xue ◽  
C. Lynne McIntyre ◽  
Colin L.D. Jenkins ◽  
Donna Glassop ◽  
Anthony F. van Herwaarden ◽  
...  
Keyword(s):  
Carbohydrate Metabolism ◽  
Water Soluble ◽  
Soluble Carbohydrate ◽  
Molecular Dissection ◽  
Carbohydrate Accumulation ◽  
Water Soluble Carbohydrate

Overexpression of TaCML20 , a calmodulin‐like gene, enhances water soluble carbohydrate accumulation and yield in wheat

2018 ◽  
Vol 165 (4) ◽  
pp. 790-799 ◽  
Author(s):  
Sundaravelpandian Kalaipandian ◽  
Gang‐Ping Xue ◽  
Anne L. Rae ◽  
Donna Glassop ◽  
Graham D. Bonnett ◽  
...  
Keyword(s):  
Water Soluble ◽  
Soluble Carbohydrate ◽  
Carbohydrate Accumulation ◽  
Water Soluble Carbohydrate

Genotypic variation in water-soluble carbohydrate accumulation in wheat

2006 ◽  
Vol 33 (9) ◽  
pp. 799 ◽  
Author(s):  
Sari A. Ruuska ◽  
Greg J. Rebetzke ◽  
Anthony F. van Herwaarden ◽  
Richard A. Richards ◽  
Neil A. Fettell ◽  
...  
Keyword(s):  
Genotypic Variation ◽  
Dry Weight ◽  
Grain Filling ◽  
Water Soluble ◽  
Soluble Carbohydrates ◽  
Soluble Carbohydrate ◽  
Broad Sense Heritability ◽  
Carbohydrate Accumulation ◽  
Sequential Mechanism ◽  
Water Soluble Carbohydrate

The water-soluble carbohydrate (WSC) that accumulates in the stems of wheat during growth can be an important contributor to grain filling, particularly under conditions when assimilation is limited, such as during end-of-season drought. WSC concentration was measured at anthesis across a diverse set of wheat genotypes over multiple environments. Environmental differences in WSC concentration were large (means for the set ranging between 108 and 203 mg g–1 dry weight), and there were significant and repeatable differences in WSC accumulation among genotypes (means ranging from 112 to 213 mg g–1 dry weight averaged across environments), associated with large broad-sense heritability (H = 0.90 ± 0.12). These results suggest that breeding for high WSC should be possible in wheat. The composition of the WSC, examined in selected genotypes, indicated that the variation in total WSC was attributed mainly to variation in the fructan component, with the other major soluble carbohydrates, sucrose and hexose, varying less. The degree of polymerisation (DP) of fructo-oligosaccharides was up to ~13 in samples where higher levels of WSC were accumulated, owing either to genotype or environment, but the higher DP components (DP > 6) were decreased in samples of lower total WSC. The results are consistent with fructan biosynthesis occurring via a sequential mechanism that is dependent on the availability of sucrose, and differences in WSC contents of genotypes are unlikely to be due to major mechanistic differences.

Linked gene networks involved in nitrogen and carbon metabolism and levels of water-soluble carbohydrate accumulation in wheat stems

2011 ◽  
Vol 11 (4) ◽  
pp. 585-597 ◽  
Author(s):  
C. Lynne McIntyre ◽  
Rosanne E. Casu ◽  
Allan Rattey ◽  
M. Fernanda Dreccer ◽  
Jason W. Kam ◽  
...  
Keyword(s):  
Carbon Metabolism ◽  
Gene Networks ◽  
Water Soluble ◽  
Soluble Carbohydrate ◽  
Carbohydrate Accumulation ◽  
Linked Gene ◽  
Water Soluble Carbohydrate

Characterisation of the WSC fraction of six species of temperate pasture grass

2004 ◽  
Vol 32 ◽  
pp. 247-248
Author(s):  
J. C. Ince ◽  
A. C. Longland ◽  
A. J. Cairns ◽  
M. Moore–Colyer
Keyword(s):  
Perennial Ryegrass ◽  
Water Soluble ◽  
Italian Ryegrass ◽  
Soluble Carbohydrate ◽  
Meadow Fescue ◽  
Pasture Grass ◽  
Pasture Grasses ◽  
Optimal Health ◽  
Water Soluble Carbohydrate ◽  
Field Plots

The carbohydrate (CHO) fraction of pasture grasses is a major source of energy for many domestic herbivores. However, the amounts, and types, of the water–soluble carbohydrate (WSC) fraction (i.e. glucose, fructose, sucrose, and polymers of sucrose and fructose, the fructans) present in such grasses, varies with species and environmental conditions. As the WSC constitute a highly digestible, energy yielding fraction of grasses, it is important to be able to measure their levels in a sward so that the diets of pastured animals may be designed to elicit optimal health and productivity. The aim of this study was to characterise the WSC profile of six UK pasture grasses, and to develop a technique for extracting the fructan portion of the WSC.Six species of UK pasture grasses [Cocksfoot (C), Timothy (T), Meadow Fescue (M), Italian Ryegrass (IR), Perennial Ryegrass (PR) and Hybrid Ryegrass (HR)] were grown in experimental field plots at IGER.

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