Abstract
Firstly, the secretion of sugars, protein and acid phosphatase from wheat and rice roots into surrounding medium under conditions of P and K deficiency stresses were studied.Secondly, Sephadex elution patterns of wheat root exudates labeled with uC under N, P and K deficiency treatments were compared.P deficiency treatment induced acid phosphatase activity in medium, in spite of the decrease in the secretion of total sugars and pro tein from roots into medium, whereas no such increase was observed in K deficiency stress.Secretion of high molecular fraction of !cc compounds from roots was accelerated by P deficiency stress, probably being associated with the presence of phosphatase activity in the medium.Activity of acid phosphatase secreted from P-deficient roots corresponded to nearly one half of the rate of P absorption by normal plant.
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Claims 5
Claim · model-written summary
P deficiency induced acid phosphatase activity in the medium around wheat and rice roots.
- Taxon
- wheat and rice
Oryza sativa
Triticum aestivume1 - Treatment
- P deficiencye2
- Outcome
- acid phosphatase activity in mediume2
- Direction
- inducede2
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e2“P deficiency treatment induced acid phosphatase activity in medium”
e1“the secretion of sugars, protein and acid phosphatase from wheat and rice roots into surrounding medium”
Claim · model-written summary
P deficiency decreased the secretion of total sugars and protein from wheat and rice roots into the medium.
- Taxon
- wheat and riceOryza sativaTriticum aestivume1
- Treatment
- P deficiencye2
- Outcome
- secretion of total sugars and pro teine3
- Direction
- decreasee3
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e3“in spite of the decrease in the secretion of total sugars and pro tein from roots into medium”
e2“P deficiency treatment induced acid phosphatase activity in medium”
e1“the secretion of sugars, protein and acid phosphatase from wheat and rice roots into surrounding medium”
Claim · model-written summary
K deficiency did not induce an increase of acid phosphatase activity in the medium around wheat and rice roots.
- Taxon
- wheat and riceOryza sativaTriticum aestivume1
- Treatment
- K deficiency stresse4
- Outcome
- acid phosphatase activity in mediume2
- Direction
- no such increasee4
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e4“whereas no such increase was observed in K deficiency stress”
e2“acid phosphatase activity in medium”
e1“the secretion of sugars, protein and acid phosphatase from wheat and rice roots into surrounding medium”
Claim · model-written summary
P deficiency accelerated the secretion of the high molecular fraction of labelled compounds from wheat roots.
- Taxon
- wheatTriticum aestivume6
- Treatment
- P deficiency stresse5
- Outcome
- Secretion of high molecular fraction of !cc compoundse5
- Direction
- acceleratede5
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e5“Secretion of high molecular fraction of !cc compounds from roots was accelerated by P deficiency stress”
e6“Sephadex elution patterns of wheat root exudates labeled with uC under N, P and K deficiency treatments were compared”
e1“the secretion of sugars, protein and acid phosphatase from wheat and rice roots into surrounding medium”
Claim · model-written summary
Acid phosphatase secreted from P-deficient roots corresponded to nearly one half of the rate of P absorption by normal plants.
- Taxon
- wheat and riceOryza sativaTriticum aestivume1
- Outcome
- Activity of acid phosphatase secreted from P-deficient rootse7
- Value
- nearly one halfe7
- Comparator
- rate of P absorption by normal plante7
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e7“Activity of acid phosphatase secreted from P-deficient roots corresponded to nearly one half of the rate of P absorption by normal plant”
e1“the secretion of sugars, protein and acid phosphatase from wheat and rice roots into surrounding medium”
The same questions in other papers
potassium · soil: biology · Triticum aestivum (wheat)Positive and negative results
1 paper in the same direction as this paper · 1 in the opposite direction
This paper is about lacking the nutrient, so it counts the other way round here.
- positive
- negative
potassium · soil: biology · Oryza sativa (rice)Positive and negative results
1 paper in the same direction as this paper · 8 in the opposite direction
This paper is about lacking the nutrient, so it counts the other way round here.
- positive
- positive
- positive
6 papers more in this group
See all 10 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.