Abstract
Cultivar differences in root elongation under B toxic conditions were observed in barley (Hordeum vulgare L.). A significant increase in the length and width of the root meristematic zone (RMZ) was observed in Sahara 3771 (B tolerant) when it was grown under excessive B concentration, compared to when grown at adequate B supply. This coincided with an increase in cell width and cell numbers in the meristematic zone (MZ), whereas a significant decrease in the length and no significant effect on the width of the MZ was observed in Clipper (B intolerant) when it was grown under excessive B supply. This was accompanied by a decrease in cell numbers, but an increase in the length and width of individual cells present along the MZ. Excessive B concentrations led to a significantly lower osmotic potential within the cell sap of the root tip in SloopVic (B tolerant) and Sahara 3771, while the opposite was observed in Clipper. Enhanced sugar levels in the root tips of SloopVic were observed between 48 and 96 h after excess B was applied. This coincided with an increase in the root elongation rate and with a 2.7-fold increase in sucrose level within mature leaf tissue. A significant decrease in reducing sugar levels was observed in the root tips of Clipper under excessive B concentrations. This coincided with significantly lower root elongation rates and lower sucrose levels in leaf tissues. Results indicate a B tolerance mechanism associated with a complex control of sucrose levels between leaf and root tip that assist in maintaining root growth under B toxicity.
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Claims 16
Claim · model-written summary
Sahara 3771 (B tolerant) showed a significant increase in length and width of the root meristematic zone under excessive B versus adequate B.
- Taxon
- barley
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Hordeum vulgaree0 - Material
- Sahara 3771e1
- Treatment
- excessive B concentratione1
- Outcome
- length and width of the root meristematic zonee1
- Direction
- increasee1
- Comparator
- adequate B supplye1
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
.jpg?width=500)
Verbatim
e0“barley (Hordeum vulgare L.)”
e1“A significant increase in the length and width of the root meristematic zone (RMZ) was observed in Sahara 3771 (B tolerant) when it was grown under excessive B concentration, compared to when grown at adequate B supply”
Claim · model-written summary
In Sahara 3771 under excessive B, cell width and cell numbers in the meristematic zone increased.
- Taxon
- barleyHordeum vulgaree0
- Material
- Sahara 3771e1
- Treatment
- excessive B concentratione1
- Outcome
- cell width and cell numbers in the meristematic zonee1
- Direction
- increasee1
- Comparator
- adequate B supplye1
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“barley (Hordeum vulgare L.)”
e1“Sahara 3771 (B tolerant) when it was grown under excessive B concentration, compared to when grown at adequate B supply. This coincided with an increase in cell width and cell numbers in the meristematic zone (MZ)”
Claim · model-written summary
In Clipper (B intolerant) under excessive B, the length of the root meristematic zone decreased significantly.
- Taxon
- barleyHordeum vulgaree0
- Material
- Clippere1
- Organ / stage
- MZe1
- Treatment
- excessive B supplye1
- Outcome
- lengthe1
- Direction
- decreasee1
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“barley (Hordeum vulgare L.)”
e1“a significant decrease in the length and no significant effect on the width of the MZ was observed in Clipper (B intolerant) when it was grown under excessive B supply”
Claim · model-written summary
In Clipper under excessive B, the width of the meristematic zone showed no significant effect.
- Taxon
- barleyHordeum vulgaree0
- Material
- Clippere1
- Organ / stage
- MZe1
- Treatment
- excessive B supplye1
- Outcome
- widthe1
- Direction
- no significant effecte1
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“barley (Hordeum vulgare L.)”
e1“a significant decrease in the length and no significant effect on the width of the MZ was observed in Clipper (B intolerant) when it was grown under excessive B supply”
Claim · model-written summary
In Clipper under excessive B, cell numbers in the meristematic zone decreased.
- Taxon
- barleyHordeum vulgaree0
- Material
- Clippere2
- Treatment
- excessive B supplye2
- Outcome
- cell numberse1
- Direction
- decreasee1
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“barley (Hordeum vulgare L.)”
e1“This was accompanied by a decrease in cell numbers”
e2“Clipper (B intolerant) when it was grown under excessive B supply”
Claim · model-written summary
In Clipper under excessive B, individual cells along the meristematic zone increased in length and width.
- Taxon
- barleyHordeum vulgaree0
- Material
- Clippere2
- Treatment
- excessive B supplye2
- Outcome
- length and width of individual cellse1
- Direction
- increasee1
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“barley (Hordeum vulgare L.)”
e1“an increase in the length and width of individual cells present along the MZ”
e2“Clipper (B intolerant) when it was grown under excessive B supply”
Claim · model-written summary
Excessive B led to significantly lower osmotic potential in the root tip cell sap of SloopVic (B tolerant).
- Taxon
- barleyHordeum vulgaree0
- Material
- SloopVice1
- Treatment
- Excessive B concentrationse1
- Outcome
- osmotic potential within the cell sap of the root tipe1
- Direction
- lowere1
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“barley (Hordeum vulgare L.)”
e1“Excessive B concentrations led to a significantly lower osmotic potential within the cell sap of the root tip in SloopVic (B tolerant) and Sahara 3771, while the opposite was observed in Clipper”
Claim · model-written summary
Excessive B led to significantly lower osmotic potential in the root tip cell sap of Sahara 3771.
- Taxon
- barleyHordeum vulgaree0
- Material
- Sahara 3771e1
- Treatment
- Excessive B concentrationse1
- Outcome
- osmotic potential within the cell sap of the root tipe1
- Direction
- lowere1
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“barley (Hordeum vulgare L.)”
e1“Excessive B concentrations led to a significantly lower osmotic potential within the cell sap of the root tip in SloopVic (B tolerant) and Sahara 3771, while the opposite was observed in Clipper”
Claim · model-written summary
In Clipper the opposite osmotic potential response was observed under excessive B.
- Taxon
- barleyHordeum vulgaree0
- Material
- Clippere1
- Treatment
- Excessive B concentrationse1
- Outcome
- osmotic potential within the cell sap of the root tipe1
- Direction
- oppositee1
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“barley (Hordeum vulgare L.)”
e1“Excessive B concentrations led to a significantly lower osmotic potential within the cell sap of the root tip in SloopVic (B tolerant) and Sahara 3771, while the opposite was observed in Clipper”
Claim · model-written summary
Sugar levels in SloopVic root tips were enhanced between 48 and 96 h after excess B was applied.
- Taxon
- barleyHordeum vulgaree0
- Material
- SloopVice1
- Organ / stage
- root tipse1
- Treatment
- excess Be1
- Outcome
- sugar levelse1
- Direction
- Enhancede1
- Qualifier
- between 48 and 96 h aftere1
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“barley (Hordeum vulgare L.)”
e1“Enhanced sugar levels in the root tips of SloopVic were observed between 48 and 96 h after excess B was applied”
Claim · model-written summary
The root elongation rate of SloopVic increased under excess B.
- Taxon
- barleyHordeum vulgaree0
- Material
- SloopVice2
- Treatment
- excess Be2
- Outcome
- root elongation ratee1
- Direction
- increasee1
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“barley (Hordeum vulgare L.)”
e1“an increase in the root elongation rate”
e2“Enhanced sugar levels in the root tips of SloopVic were observed between 48 and 96 h after excess B was applied”
Claim · model-written summary
Sucrose level in mature leaf tissue of SloopVic showed a 2.7-fold increase under excess B.
- Taxon
- barleyHordeum vulgaree0
- Material
- SloopVice2
- Organ / stage
- mature leaf tissuee1
- Treatment
- excess Be2
- Outcome
- sucrose levele1
- Direction
- increasee1
- Value
- 2.7-folde1
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“barley (Hordeum vulgare L.)”
e1“a 2.7-fold increase in sucrose level within mature leaf tissue”
e2“Enhanced sugar levels in the root tips of SloopVic were observed between 48 and 96 h after excess B was applied”
Claim · model-written summary
Reducing sugar levels in Clipper root tips decreased significantly under excessive B.
- Taxon
- barleyHordeum vulgaree0
- Material
- Clippere1
- Organ / stage
- root tipse1
- Treatment
- excessive B concentrationse1
- Outcome
- reducing sugar levelse1
- Direction
- decreasee1
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“barley (Hordeum vulgare L.)”
e1“A significant decrease in reducing sugar levels was observed in the root tips of Clipper under excessive B concentrations”
Claim · model-written summary
Root elongation rates of Clipper were significantly lower under excessive B.
- Taxon
- barleyHordeum vulgaree0
- Material
- Clippere2
- Treatment
- excessive B concentrationse2
- Outcome
- root elongation ratese1
- Direction
- lowere1
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“barley (Hordeum vulgare L.)”
e1“significantly lower root elongation rates”
e2“Clipper under excessive B concentrations”
Claim · model-written summary
Sucrose levels in leaf tissues of Clipper were lower under excessive B.
- Taxon
- barleyHordeum vulgaree0
- Material
- Clippere2
- Organ / stage
- leaf tissuese1
- Treatment
- excessive B concentrationse2
- Outcome
- sucrose levelse1
- Direction
- lowere1
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“barley (Hordeum vulgare L.)”
e1“lower sucrose levels in leaf tissues”
e2“Clipper under excessive B concentrations”
Claim · model-written summary
The results indicate a B tolerance mechanism associated with complex control of sucrose levels between leaf and root tip that maintains root growth under B toxicity.
- Taxon
- barleyHordeum vulgaree0
- Compound
- sucrosee1
- Outcome
- maintaining root growth under B toxicitye1
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“barley (Hordeum vulgare L.)”
e1“a B tolerance mechanism associated with a complex control of sucrose levels between leaf and root tip that assist in maintaining root growth under B toxicity”
The same questions in other papers
boron atom · growth · Hordeum vulgare (barley)Results differ
3 papers in the same direction as this paper · 3 in the opposite direction
- positive
- positive
- positive
3 papers more in this group
See all 7 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.