Abstract
The distribution of fucose-containing polysaccharides in apical 1-cm sections of corn (Zea mays cv. SX-17) root tips was analyzed. Fucose-containing polysaccharides were localized predominantly in the apical 1 mm of the root, i.e., in the apical initials and root cap. An analysis of the distribution of incorporated radioactive label from l-fucose[(3)H] gave similar results. After a 2-hr incubation with fucose[(3)H], label was found principally in two components, namely a water-soluble slime fraction and hemicellulose. The incorporation of fucose into the water-soluble, ethanol-insoluble fraction was primarily in the apical 1 mm of the root, whereas incorporation into a water-insoluble, potassium hydroxide-soluble fraction was in the region 2 to 5 mm behind the root cap. Addition of sucrose to the incubation medium during fucose[(3)H] incorporation reduces label uptake but increases the amount of label in the fucose-rich secreted polysaccharide. The utility of fucose as a marker for the secreted polysaccharide was confirmed by demonstrating that no appreciable metabolism of this sugar occurs.
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Claims 8
Claim · model-written summary
Fucose-containing polysaccharides were concentrated in the apical 1 mm of corn roots.
- Taxon
- corn
Zea mays subsp. mayse1 - Material
- Zea mays cv. SX-17e1
- Organ / stage
- apical initials and root cape0
- Outcome
- Fucose-containing polysaccharidese0
- Qualifier
- apical 1 mme0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Fucose-containing polysaccharides were localized predominantly in the apical 1 mm of the root, i.e., in the apical initials and root cap”
e1“corn (Zea mays cv. SX-17) root tips”
Claim · model-written summary
The distribution of incorporated radioactive l-fucose label resembled that of fucose-containing polysaccharides.
- Taxon
- cornZea mays subsp. mayse1
- Organ / stage
- root tipse1
- Outcome
- distribution of incorporated radioactive label from l-fucose[(3)H]e0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“An analysis of the distribution of incorporated radioactive label from l-fucose[(3)H] gave similar results”
e1“corn (Zea mays cv. SX-17) root tips”
Claim · model-written summary
After two hours, incorporated fucose label was mainly in water-soluble slime and hemicellulose.
- Taxon
- cornZea mays subsp. mayse1
- Outcome
- water-soluble slime fraction and hemicellulosee0
- Qualifier
- 2-hr incubatione0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“After a 2-hr incubation with fucose[(3)H], label was found principally in two components, namely a water-soluble slime fraction and hemicellulose”
e1“corn (Zea mays cv. SX-17) root tips”
Claim · model-written summary
Incorporation of fucose into the water-soluble ethanol-insoluble fraction was primarily in the apical 1 mm.
- Taxon
- cornZea mays subsp. mayse1
- Organ / stage
- apical 1 mm of the roote0
- Outcome
- incorporation of fucose into the water-soluble, ethanol-insoluble fractione0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The incorporation of fucose into the water-soluble, ethanol-insoluble fraction was primarily in the apical 1 mm of the root”
e1“corn (Zea mays cv. SX-17) root tips”
Claim · model-written summary
Incorporation into the water-insoluble potassium hydroxide-soluble fraction occurred 2 to 5 mm behind the root cap.
- Taxon
- cornZea mays subsp. mayse1
- Organ / stage
- region 2 to 5 mm behind the root cape0
- Outcome
- incorporation into a water-insoluble, potassium hydroxide-soluble fractione0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“incorporation into a water-insoluble, potassium hydroxide-soluble fraction was in the region 2 to 5 mm behind the root cap”
e1“corn (Zea mays cv. SX-17) root tips”
Claim · model-written summary
Sucrose addition reduced labeled fucose uptake.
- Taxon
- cornZea mays subsp. mayse1
- Treatment
- Addition of sucrose to the incubation mediume0
- Outcome
- label uptakee0
- Direction
- reducese0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Addition of sucrose to the incubation medium during fucose[(3)H] incorporation reduces label uptake but increases the amount of label in the fucose-rich secreted polysaccharide”
e1“corn (Zea mays cv. SX-17) root tips”
Claim · model-written summary
Sucrose addition increased labeled fucose in the fucose-rich secreted polysaccharide.
- Taxon
- cornZea mays subsp. mayse1
- Treatment
- Addition of sucrose to the incubation mediume0
- Outcome
- amount of label in the fucose-rich secreted polysaccharidee0
- Direction
- increasese0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Addition of sucrose to the incubation medium during fucose[(3)H] incorporation reduces label uptake but increases the amount of label in the fucose-rich secreted polysaccharide”
e1“corn (Zea mays cv. SX-17) root tips”
Claim · model-written summary
No appreciable metabolism of fucose occurred, supporting its use as a marker of secreted polysaccharide.
- Taxon
- cornZea mays subsp. mayse1
- Outcome
- utility of fucose as a marker for the secreted polysaccharidee0
- Qualifier
- no appreciable metabolism of this sugare0
Not reportedComparatorValue
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The utility of fucose as a marker for the secreted polysaccharide was confirmed by demonstrating that no appreciable metabolism of this sugar occurs”
e1“corn (Zea mays cv. SX-17) root tips”
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See all 12 papers →Claims are grouped by organism, treatment and what was measured or targeted. A paper counts as positive when any of its claims in the group is positive.