Abstract
Four plant species (Zea mays, Lolium italicum, Phaseolus vulgaris, and Pisum sativum) were grown either with full nutrient supply or with calcium, potassium, or nitrogen deficiency. After 4–6 weeks the shoots were analysed for their content of K+, Ca2+, Mg2+, and Na+, of total anions, and of organic acids. The qualitative pattern of organic acid components, characteristic of each species, remained, with few exceptions, unchanged by deficiency treatments. Striking differences were detected in the total acid content and in the quantities of the respective main organic acid components, especially in potassium-deficient plants. These changes showed strong correlations with alterations of cation excess and demonstrate that aconitate in Zea mays, malonate in Phaseolus vulgaris, and citrate in Pisum sativum contribute to charge balance.
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Claims 9
Claim · model-written summary
In Zea mays, the qualitative pattern of organic acid components stayed unchanged under mineral deficiency, with few exceptions.
- Treatment
- calcium, potassium, or nitrogen deficiencye1
- Outcome
- qualitative pattern of organic acid componentse2
- Qualifier
- with few exceptionse2
- Comparator
- full nutrient supplye1
Not reportedDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e1“Four plant species (Zea mays, Lolium italicum, Phaseolus vulgaris, and Pisum sativum) were grown either with full nutrient supply or with calcium, potassium, or nitrogen deficiency”
e2“The qualitative pattern of organic acid components, characteristic of each species, remained, with few exceptions, unchanged by deficiency treatments”
Claim · model-written summary
In Lolium italicum, the qualitative pattern of organic acid components stayed unchanged under mineral deficiency, with few exceptions.
- Taxon
- Lolium italicum
Lolium multiflorume1 - Treatment
- calcium, potassium, or nitrogen deficiencye1
- Outcome
- qualitative pattern of organic acid componentse2
- Qualifier
- with few exceptionse2
- Comparator
- full nutrient supplye1
Not reportedDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e1“Four plant species (Zea mays, Lolium italicum, Phaseolus vulgaris, and Pisum sativum) were grown either with full nutrient supply or with calcium, potassium, or nitrogen deficiency”
e2“The qualitative pattern of organic acid components, characteristic of each species, remained, with few exceptions, unchanged by deficiency treatments”
Claim · model-written summary
In Phaseolus vulgaris, the qualitative pattern of organic acid components stayed unchanged under mineral deficiency, with few exceptions.
- Taxon
- Phaseolus vulgaris
Phaseolus vulgarise1 - Treatment
- calcium, potassium, or nitrogen deficiencye1
- Outcome
- qualitative pattern of organic acid componentse2
- Qualifier
- with few exceptionse2
- Comparator
- full nutrient supplye1
Not reportedDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e1“Four plant species (Zea mays, Lolium italicum, Phaseolus vulgaris, and Pisum sativum) were grown either with full nutrient supply or with calcium, potassium, or nitrogen deficiency”
e2“The qualitative pattern of organic acid components, characteristic of each species, remained, with few exceptions, unchanged by deficiency treatments”
Claim · model-written summary
In Pisum sativum, the qualitative pattern of organic acid components stayed unchanged under mineral deficiency, with few exceptions.
- Taxon
- Pisum sativum
Lathyrus oleraceuse1 - Treatment
- calcium, potassium, or nitrogen deficiencye1
- Outcome
- qualitative pattern of organic acid componentse2
- Qualifier
- with few exceptionse2
- Comparator
- full nutrient supplye1
Not reportedDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e1“Four plant species (Zea mays, Lolium italicum, Phaseolus vulgaris, and Pisum sativum) were grown either with full nutrient supply or with calcium, potassium, or nitrogen deficiency”
e2“The qualitative pattern of organic acid components, characteristic of each species, remained, with few exceptions, unchanged by deficiency treatments”
Claim · model-written summary
Mineral deficiency produced striking differences in total acid content and main organic acid components, especially in potassium-deficient plants.
- Taxon
- Zea mays, Lolium italicum, Phaseolus vulgaris, and Pisum sativumPhaseolus vulgarisLathyrus oleraceusLolium multiflorum
Zea mayse1 - Treatment
- calcium, potassium, or nitrogen deficiencye1
- Outcome
- total acid contente3
- Qualifier
- especially in potassium-deficient plantse3
- Comparator
- full nutrient supplye1
Not reportedDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e1“Four plant species (Zea mays, Lolium italicum, Phaseolus vulgaris, and Pisum sativum) were grown either with full nutrient supply or with calcium, potassium, or nitrogen deficiency”
e3“Striking differences were detected in the total acid content and in the quantities of the respective main organic acid components, especially in potassium-deficient plants”
Claim · model-written summary
Organic acid changes under mineral deficiency correlated strongly with alterations of cation excess.
- Taxon
- Zea mays, Lolium italicum, Phaseolus vulgaris, and Pisum sativumPhaseolus vulgarisLathyrus oleraceusLolium multiflorumZea mayse1
- Treatment
- calcium, potassium, or nitrogen deficiencye1
- Outcome
- alterations of cation excesse4
Not reportedDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e1“Four plant species (Zea mays, Lolium italicum, Phaseolus vulgaris, and Pisum sativum) were grown either with full nutrient supply or with calcium, potassium, or nitrogen deficiency”
e4“These changes showed strong correlations with alterations of cation excess”
Claim · model-written summary
Aconitate contributes to charge balance in Zea mays.
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e5“aconitate in Zea mays, malonate in Phaseolus vulgaris, and citrate in Pisum sativum contribute to charge balance”
Claim · model-written summary
Malonate contributes to charge balance in Phaseolus vulgaris.
- Taxon
- Phaseolus vulgarisPhaseolus vulgarise5
- Compound
- malonatee5
- Outcome
- charge balancee5
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e5“aconitate in Zea mays, malonate in Phaseolus vulgaris, and citrate in Pisum sativum contribute to charge balance”
Claim · model-written summary
Citrate contributes to charge balance in Pisum sativum.
- Taxon
- Pisum sativumLathyrus oleraceuse5
- Compound
- citratee5
- Outcome
- charge balancee5
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e5“aconitate in Zea mays, malonate in Phaseolus vulgaris, and citrate in Pisum sativum contribute to charge balance”
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See all 11 papers →calcium atom · molecular: metabolites · Lolium multiflorum (Italian ryegrass)Results agree
1 paper in the same direction as this paper
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nitrogen · molecular: metabolites · Phaseolus vulgaris (common bean)Results differ
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This paper is about lacking the nutrient, so it counts the other way round here.
- positive
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See all 11 papers →potassium · molecular: metabolites · Lathyrus oleraceus (pea)Positive and negative results
3 reporting no difference from an alternative
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potassium · molecular: metabolites · Phaseolus vulgaris (common bean)Positive and negative results
6 reporting no difference from an alternative
- positive
- positive
- positive
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See all 7 papers →nitrogen · molecular: metabolites · Lathyrus oleraceus (pea)Positive and negative results
6 papers 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
11 papers more in this group
See all 15 papers →8 of 12 groups shown: named compounds and organisms first, then groups whose results differ (checked claim by claim), then those with positive and negative results, then the smaller groups.
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.