Abstract
When a single, rooted leaf of dwarf bean (Phaseolus vulgaris, var. humilis Edogawa) was grown in a phosphate-deficient condition in light, expansion of the leaf stopped earlier than the increase in the volume of the root. These results indicate that the use of the assimilate for leaf expansion stops early in comparison to the transport of the assimilate to the roots, when the external supply of phosphate is discontinued. After transfer to the phosphate-deficient condition, the photosynthetic capacity increased for several days, then decreased. On the 12th day after transfer, the photosynthetic capacity reached its lowest level. When phosphate was added to the roots at an early stage of phosphorus deficiency, photosynthesis showed little recovery during the first 3 hr alter the addition, but it recovered largely between 3 and 48 hr. But, at a later deficient stage, it was restored largely during the first 3 hr, as well as being maintained between 3 and 48 hr. This immediate recovery of photosynthesis within 3 hr after the addition of phosphate increased largely in spite of decreasing photosynthesis in the plants subjected to progressive phosphorus-deficient stress.
Abstract from the paper’s OpenAlex record, shown for indexing and research. Copyright remains with the authors or the publisher. Read at the source ↗
The text the model read, with the source record’s inline markup (italics, sub- and superscripts) rendered and its character entities decoded; quote offsets refer to the raw text.
Claims 8
Claim · model-written summary
Under phosphate deficiency, leaf expansion stopped before root volume ceased increasing.
Verbatim
e0“When a single, rooted leaf of dwarf bean (Phaseolus vulgaris, var. humilis Edogawa) was grown in a phosphate-deficient condition in light, expansion of the leaf stopped earlier than the increase in the volume of the root.”
Claim · model-written summary
Photosynthetic capacity initially increased after transfer to phosphate deficiency.
- Taxon
- dwarf beant0
- Treatment
- phosphate-deficient conditione0
- Outcome
- photosynthetic capacitye0
- Direction
- increasede0
- Qualifier
- for several dayse0
Not reportedComparator
Verbatim
e0“After transfer to the phosphate-deficient condition, the photosynthetic capacity increased for several days, then decreased.”
t0“Dwarf Bean”
Claim · model-written summary
Photosynthetic capacity later decreased after phosphate deficiency.
- Taxon
- dwarf beant0
- Treatment
- phosphate-deficient conditione0
- Outcome
- photosynthetic capacitye0
- Direction
- decreasede0
- Qualifier
- thene0
Not reportedComparator
Verbatim
e0“After transfer to the phosphate-deficient condition, the photosynthetic capacity increased for several days, then decreased.”
t0“Dwarf Bean”
Claim · model-written summary
Photosynthetic capacity was lowest on day 12 after transfer.
Verbatim
e0“On the 12th day after transfer, the photosynthetic capacity reached its lowest level.”
t0“Dwarf Bean”
Claim · model-written summary
Early phosphate resupply produced little photosynthetic recovery in the first three hours.
- Taxon
- dwarf beant0
- Treatment
- phosphate was added to the rootse0
- Outcome
- photosynthesise0
- Direction
- little recoverye0
- Qualifier
- early stage of phosphorus deficiencye0
Not reportedComparator
Verbatim
e0“When phosphate was added to the roots at an early stage of phosphorus deficiency, photosynthesis showed little recovery during the first 3 hr alter the addition, but it recovered largely between 3 and 48 hr.”
t0“Dwarf Bean”
Claim · model-written summary
Early phosphate resupply produced large photosynthetic recovery from three to 48 hours.
- Taxon
- dwarf beant0
- Treatment
- phosphate was added to the rootse0
- Outcome
- photosynthesise0
- Direction
- recovered largelye0
- Qualifier
- between 3 and 48 hre0
Not reportedComparator
Verbatim
e0“When phosphate was added to the roots at an early stage of phosphorus deficiency, photosynthesis showed little recovery during the first 3 hr alter the addition, but it recovered largely between 3 and 48 hr.”
t0“Dwarf Bean”
Claim · model-written summary
Late phosphate resupply largely restored photosynthesis within three hours.
Not reportedTreatmentComparator
Verbatim
e0“photosynthesis showed little recovery during the first 3 hr alter the addition, but it recovered largely between 3 and 48 hr. But, at a later deficient stage, it was restored largely during the first 3 hr, as well as being maintained between 3 and 48 hr.”
t0“Dwarf Bean”
Claim · model-written summary
After late resupply, restored photosynthesis was maintained through 48 hours.
Verbatim
e0“photosynthesis showed little recovery during the first 3 hr alter the addition, but it recovered largely between 3 and 48 hr. But, at a later deficient stage, it was restored largely during the first 3 hr, as well as being maintained between 3 and 48 hr.”
t0“Dwarf Bean”
The same questions in other papers
phosphorus · physiology: photosynthesis · Phaseolus vulgaris (common bean)Positive and negative results
8 papers in the same direction as this paper · 3 in the opposite direction
This paper is about lacking the nutrient, so it counts the other way round here.
- negative
- negative
- negative
8 papers more in this group
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.