Abstract
Two experiments with the Mt. Barker strain of subterranean clover and one with the Dwalganup strain were conducted. In each experiment, increase in phosphate supply led to increases in total dry weight production. As phosphate deficiency became more acute in the Dwalganup strain, the leaf concentrations of two isoflavones, formononetin and genistein, increased as much as twofold; a third isoflavone, biochanin A, showed little change. In the Mt. Barker strain the concentrations of genistein and biochanin A increased about twofold with increasing severity of phosphate deficiency, while those of formononetin increased at least fourfold. It is suggested that isoflavone formation in clover leaves increases under phosphate deficiency, and that this is associated with increased carbon substrates in the leaf cells. The relations between isoflavone levels and oestrogenic potency are discussed. Phosphate deficiency may be indirectly related to oestrogenic potency through its influence on isoflavone levels.
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Claims 8
Claim · model-written summary
Increasing phosphate supply increased total dry weight in each clover experiment.
- Taxon
- subterranean clover
Trifolium subterraneumt0 - Treatment
- increase in phosphate supplye0
- Outcome
- total dry weight productione0
- Direction
- increasese0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“In each experiment, increase in phosphate supply led to increases in total dry weight production”
t0“subterranean clover”
Claim · model-written summary
More acute phosphate deficiency increased Dwalganup leaf formononetin concentration up to twofold.
- Taxon
- subterranean cloverTrifolium subterraneumt0
- Material
- Dwalganup straine0
- Organ / stage
- leafe0
- Treatment
- phosphate deficiencye0
- Outcome
- formononetine0
- Direction
- increasede0
- Value
- twofolde0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“As phosphate deficiency became more acute in the Dwalganup strain, the leaf concentrations of two isoflavones, formononetin and genistein, increased as much as twofold”
t0“subterranean clover”
Claim · model-written summary
More acute phosphate deficiency increased Dwalganup leaf genistein concentration up to twofold.
- Taxon
- subterranean cloverTrifolium subterraneumt0
- Material
- Dwalganup straine0
- Organ / stage
- leafe0
- Treatment
- phosphate deficiencye0
- Outcome
- genisteine0
- Direction
- increasede0
- Value
- twofolde0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“As phosphate deficiency became more acute in the Dwalganup strain, the leaf concentrations of two isoflavones, formononetin and genistein, increased as much as twofold”
t0“subterranean clover”
Claim · model-written summary
Mt. Barker genistein concentration increased about twofold as phosphate deficiency intensified.
- Taxon
- subterranean cloverTrifolium subterraneumt0
- Material
- Mt. Barker straine0
- Treatment
- phosphate deficiencye0
- Outcome
- genisteine0
- Direction
- increasede0
- Value
- twofolde0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“In the Mt. Barker strain the concentrations of genistein and biochanin A increased about twofold with increasing severity of phosphate deficiency”
t0“subterranean clover”
Claim · model-written summary
Mt. Barker biochanin A concentration increased about twofold as phosphate deficiency intensified.
- Taxon
- subterranean cloverTrifolium subterraneumt0
- Material
- Mt. Barker straine0
- Treatment
- phosphate deficiencye0
- Outcome
- biochanin Ae0
- Direction
- increasede0
- Value
- twofolde0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“In the Mt. Barker strain the concentrations of genistein and biochanin A increased about twofold with increasing severity of phosphate deficiency”
t0“subterranean clover”
Claim · model-written summary
Mt. Barker formononetin concentration increased at least fourfold as phosphate deficiency intensified.
- Taxon
- subterranean cloverTrifolium subterraneumt0
- Material
- Mt. Barker straine1
- Treatment
- phosphate deficiencye2
- Outcome
- formononetine0
- Direction
- increasede0
- Value
- at least fourfolde0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“while those of formononetin increased at least fourfold”
e1“In the Mt. Barker strain”
e2“phosphate deficiency became more acute in the Dwalganup strain”
t0“subterranean clover”
Claim · model-written summary
The authors suggest phosphate deficiency increases leaf isoflavone formation through increased cellular carbon substrates.
- Treatment
- phosphate deficiencye0
- Outcome
- isoflavone formatione0
- Qualifier
- increased carbon substrates in the leaf cellse0
TrifoliumOrganisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“isoflavone formation in clover leaves increases under phosphate deficiency, and that this is associated with increased carbon substrates in the leaf cells”
Claim · model-written summary
The authors suggest phosphate deficiency may indirectly relate to oestrogenic potency through isoflavone levels.
- Taxon
- subterranean cloverTrifolium subterraneumt0
- Treatment
- Phosphate deficiencye0
- Outcome
- oestrogenic potencye0
- Qualifier
- isoflavone levelse0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Phosphate deficiency may be indirectly related to oestrogenic potency through its influence on isoflavone levels”
t0“subterranean clover”
The same questions in other papers
phosphorus · yield · Trifolium subterraneumResults differ
15 papers in the same direction as this paper · 3 in the opposite direction
- negative
- negative
- no effect
15 papers more in this group
See all 19 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.