Sugar Alcohols

Bieleski, R. L.

doi:10.1007/978-3-642-68275-9_5

Cited by 109 publications

(100 citation statements)

References 93 publications

Supporting

Mentioning

Contrasting

Unclassified

Order By: Relevance

“…In Rosaceae, photosynthesis-derived carbohydrates are transported mainly as sorbitol 23,24 . Compared with other plant genomes, apple has considerably more copies of key genes related to sorbitol metabolism.…”

Section: G T a A C C G G T T G T A C C T A G C T A G A C G T A A C mentioning

confidence: 99%

The genome of the domesticated apple (Malus × domestica Borkh.)

et al. 2010

View full text Add to dashboard Cite

Section: G T a A C C G G T T G T A C C T A G C T A G A C G T A A C mentioning

confidence: 99%

The genome of the domesticated apple (Malus × domestica Borkh.)

et al. 2010

View full text Add to dashboard Cite

“…Sorbitol is a major phloem-transported carbohydrate and component of the non-structural carbohydrates present in apple trees, first identified in 1968 (Bieleski 1969(Bieleski , 1982. Reducing sugar assays were used in many earlier studies but these are not sensitive to the sorbitol component.…”

Section: Introductionmentioning

confidence: 99%

Changes in non‐structural carbohydrate concentration in 1‐year‐old shoots of ‘Braeburn’ apple(Malus domestica)over two consecutive years

McQueen

Minchin

Silvester

2004

New Zealand Journal of Crop and Horticultural Science

View full text Add to dashboard Cite

This paper presents patterns of change in non-structural carbohydrate concentrations of 1-year-old shoots over a 2-year period for 'Braeburn' apple trees (Malus domestica) growing in the Waikato region of New Zealand. Carbohydrates analysed by enzymatic analysis included starch, sorbitol, sucrose, glucose, and fructose. Sorbitol concentrations were found to be higher than starch for most periods of the year and sorbitol comprised the majority of the total carbohydrates. Starch concentrations were never completely depleted, even during periods of rapid growth. These patterns of carbohydrate change were similar to those reported from Northern Hemisphere studies for a variety of deciduous fruit tree species, indicating that carbohydrate changes in New Zealand trees are comparable with trees worldwide, despite the long period of leaf retention after harvest in New Zealand.

show abstract

“…These results show that MCPR and, thus, mannitol synthesis are closely associated with the distribution of photosynthetic carbon metabolism in celery leaves. The principal role of MCPR is, therefore, in the assimilation of carbon being exported from the chloroplast, and i t seems unlikely that this enzyme plays even an indirect role in phloem loading of mannitol.The acyclic sugar alcohols (polyols) are second only to the sugars as principal products of carbon assimilation and account for an estimated 30% of global primary production (Bieleski, 1982). In a11 polyol-producing higher plants studied to date, Suc is also a major photoassimilate.…”

mentioning

confidence: 99%

“…The acyclic sugar alcohols (polyols) are second only to the sugars as principal products of carbon assimilation and account for an estimated 30% of global primary production (Bieleski, 1982). In a11 polyol-producing higher plants studied to date, Suc is also a major photoassimilate.…”

mentioning

confidence: 99%

Mannose-6-Phosphate Reductase, a Key Enzyme in Photoassimilate Partitioning, Is Abundant and Located in the Cytosol of Photosynthetically Active Cells of Celery (Apium graveolens L.) Source Leaves

1993

View full text Add to dashboard Cite

991 64-4238 (V.R.F.)Mannitol, a major photosynthetic product and transport carbohydrate in many plants, accounts for approximately 50% of the carbon fixed by celery (Apium graveolens 1.) leaves. Previous subfractionation studies of celery leaves indicated that the enzymes for mannitol synthesis were located in the cytosol, but these data are inconsistent with that published for the sites of sugar alcohol synthesis in other families and taxa, including apple (Malus) and a brown alga (fucus). Using antibodies to a key synthetic enzyme, NADPH-dependent mannose-6-phosphate reductase (MCPR), and immunocytochemical techniques, we have resolved both the intercellular and intracellular sites of mannitol synthesis. In leaves, MCPR was found only in cells containing ribulose-l,5-bisphosphate carboxylase/oxygenase. MCPR was almost exclusively cytosolic in these cells, with the nucleus being the only organelle to show labeling. The key step in transport carbohydrate biosynthesis that is catalyzed by MCPR displays no apparent preferential association with vascular tissues or with the bundle sheath. These results show that MCPR and, thus, mannitol synthesis are closely associated with the distribution of photosynthetic carbon metabolism in celery leaves. The principal role of MCPR is, therefore, in the assimilation of carbon being exported from the chloroplast, and i t seems unlikely that this enzyme plays even an indirect role in phloem loading of mannitol.The acyclic sugar alcohols (polyols) are second only to the sugars as principal products of carbon assimilation and account for an estimated 30% of global primary production (Bieleski, 1982). In a11 polyol-producing higher plants studied to date, Suc is also a major photoassimilate. In some species, sucrosyl-oligosaccharides (eg. raffinose) are found in the phloem sap in addition to the polyol and SUC. The nature of primary production and transport in higher plant polyol producers raises fundamental questions as to why such an apparently complex system has evolved when Suc alone performs adequately in many other species. Questions are also raised as to how carbon partitioning into polyols and other primary products is regulated at a biochemical, cellular, and tissue level. Celery (Apium graveolens L.) is a fine model in which to study such questions, because mature leaves

show abstract

Sugar Alcohols

Cited by 109 publications

References 93 publications

The genome of the domesticated apple (Malus × domestica Borkh.)

The genome of the domesticated apple (Malus × domestica Borkh.)

Changes in non‐structural carbohydrate concentration in 1‐year‐old shoots of ‘Braeburn’ apple(Malus domestica)over two consecutive years

Mannose-6-Phosphate Reductase, a Key Enzyme in Photoassimilate Partitioning, Is Abundant and Located in the Cytosol of Photosynthetically Active Cells of Celery (Apium graveolens L.) Source Leaves

Contact Info

Product

Resources

About