Abstract
in solution reduce root growth and root hair development in soybean [Glycine max (L.) Merr.]. Calcium (Ca) ameliorates to a certain extent the toxic effects of Al on root growth, but the interactive effects of Ca and Al on root hair development are not known. In the absence of added Al in solution culture, Ca concentration over the range 500-2000 μM had little effect on root growth or root hair development of soybean cv. Fitzroy. Where the sum of the activities of the monomeric Al species was 2 μM, taproot elongation and lateral root development of soybean was suppressed in solution with 500 μM Ca. The length of the root hair zone was only 10% of that in plants not exposed to Al, and scanning electron microscopy revealed a low density of root hairs. Increasing the Ca concentration to 2000 μM largely overcame these deleterious effects. The results are discussed in relation to the role of root hairs as infection sites for Bradyrhizobium, and the known effects of Al in suppressing nodulation in soybean.
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Claims 5
Claim · model-written summary
Without aluminium, calcium from 500 to 2000 μM had little effect on root growth or root hair development.
- Taxon
- soybean
Glycine maxe0 - Material
- Fitzroye0
- Treatment
- Ca concentration over the range 500-2000 μMe0
- Outcome
- root growth or root hair developmente0
- Direction
- little effecte0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“In the absence of added Al in solution culture, Ca concentration over the range 500-2000 μM had little effect on root growth or root hair development of soybean cv. Fitzroy.”
Claim · model-written summary
At 2 μM aluminium species and 500 μM calcium, taproot elongation and lateral root development were suppressed.
- Taxon
- soybeanGlycine maxe0
- Treatment
- monomeric Al species was 2 μMe0
- Outcome
- taproot elongation and lateral root developmente0
- Direction
- suppressede0
- Qualifier
- 500 μM Cae0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Where the sum of the activities of the monomeric Al species was 2 μM, taproot elongation and lateral root development of soybean was suppressed in solution with 500 μM Ca.”
Claim · model-written summary
With aluminium, the root hair zone was 10% of that without aluminium.
- Taxon
- soybeanGlycine maxt0
- Treatment
- Ale0
- Outcome
- length of the root hair zonee0
- Direction
- onlye0
- Value
- 10%e0
- Comparator
- plants not exposed to Ale0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The length of the root hair zone was only 10% of that in plants not exposed to Al”
t0“soybean [Glycine max (L.) Merr.]”
Claim · model-written summary
Scanning electron microscopy showed low root hair density under aluminium.
- Taxon
- soybeanGlycine maxt0
- Outcome
- low density of root hairse0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“scanning electron microscopy revealed a low density of root hairs”
t0“soybean [Glycine max (L.) Merr.]”
Claim · model-written summary
Increasing calcium to 2000 μM largely overcame aluminium damage to roots and root hairs.
- Taxon
- soybeanGlycine maxt0
- Treatment
- Increasing the Ca concentration to 2000 μMe0
- Outcome
- deleterious effectse0
- Direction
- largely overcamee0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Increasing the Ca concentration to 2000 μM largely overcame these deleterious effects.”
t0“soybean [Glycine max (L.) Merr.]”
The same questions in other papers
calcium atom · growth · Glycine max (soybean)Results differ
8 papers in the same direction as this paper · 26 in the opposite direction
This paper is about lacking the nutrient, so it counts the other way round here.
- positive
- no effect
- positive
31 papers more in this group
See all 35 papers →aluminium atom · growth · Glycine max (soybean)Results differ
27 papers in the same direction as this paper · 16 in the opposite direction
- positive
- no effect
- positive
40 papers more in this group
See all 44 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.