Abstract
The present work has been performed to study the growth and metabolic activities of maize and broad bean plants which are shown to have a degree of sensitivity to salinity and to determine the role of amino acids proline or phenylalanine in increasing the salt tolerance of theses plants. Dry mass, water content, leaf area and photosynthetic pigment of maize and broad bean plants decreased with increasing salinity. These changes were accompanied with a drop in the contents of soluble sugars, soluble proteins and amino acids. This was accompanied by a marked increase in the proline content. When maize and broad bean plants sprayed with proline or phenylalanine the opposite effect was occurred, saccharides as well as proteins progressively increased at all sanitization levels and proline concentration significantly declined. Salinity significantly increased the sodium content in both shoots and roots of maize and broad bean plants, while a decline in the accumulation of K+, Ca++, Mg++and P was observed. Amino acids treatments markedly altered the selectivity of Na+, K+, Ca++ and P in both maize and broad bean plants. Spraying with any of either proline or phenylalanine restricted Na+ uptake and enhanced the uptake of K+, K+/Na+ ratio, Ca++ and P selectivity in maize and broad bean plants. Key words: Proline, phenylalanine, spraying, salinity, maize, broad bean.
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Claims 6
Claim · model-written summary
Salinity reduced dry mass, water content, leaf area and photosynthetic pigment in both plants.
- Taxon
- maize and broad bean plants
Vicia faba
Zea mayse0 - Treatment
- increasing salinitye0
- Outcome
- Dry mass, water content, leaf area and photosynthetic pigmente0
- Direction
- decreasede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Dry mass, water content, leaf area and photosynthetic pigment of maize and broad bean plants decreased with increasing salinity.”
Claim · model-written summary
Amino acid sprays increased saccharides and proteins under salinity.
- Taxon
- maize and broad bean plantsVicia fabaZea mayse0
- Treatment
- proline or phenylalaninee0
- Outcome
- saccharides as well as proteinse0
- Direction
- increasede0
- Qualifier
- at all sanitization levelse0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“When maize and broad bean plants sprayed with proline or phenylalanine the opposite effect was occurred, saccharides as well as proteins progressively increased at all sanitization levels and proline concentration significantly declined.”
Claim · model-written summary
Amino acid sprays significantly lowered proline concentration.
- Taxon
- maize and broad bean plantsVicia fabaZea mayse0
- Treatment
- proline or phenylalaninee0
- Outcome
- proline concentratione0
- Direction
- declinede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“When maize and broad bean plants sprayed with proline or phenylalanine the opposite effect was occurred, saccharides as well as proteins progressively increased at all sanitization levels and proline concentration significantly declined.”
Claim · model-written summary
Salinity significantly increased sodium in shoots and roots.
- Taxon
- maize and broad bean plantsVicia fabaZea mayse0
- Organ / stage
- shoots and rootse0
- Treatment
- Salinitye0
- Outcome
- sodium contente0
- Direction
- increasede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Salinity significantly increased the sodium content in both shoots and roots of maize and broad bean plants”
Claim · model-written summary
Proline or phenylalanine sprays restricted Na+ uptake.
- Taxon
- maize and broad bean plantsVicia fabaZea mayse0
- Treatment
- proline or phenylalaninee0
- Outcome
- Na+ uptakee0
- Direction
- restrictede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Spraying with any of either proline or phenylalanine restricted Na+ uptake and enhanced the uptake of K+, K+/Na+ ratio, Ca++ and P selectivity in maize and broad bean plants.”
Claim · model-written summary
Proline or phenylalanine sprays enhanced K+ uptake, K+/Na+ ratio, Ca++ and P selectivity.
- Taxon
- maize and broad bean plantsVicia fabaZea mayse0
- Treatment
- proline or phenylalaninee0
- Outcome
- uptake of K+, K+/Na+ ratio, Ca++ and P selectivitye0
- Direction
- enhancede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Spraying with any of either proline or phenylalanine restricted Na+ uptake and enhanced the uptake of K+, K+/Na+ ratio, Ca++ and P selectivity in maize and broad bean plants.”
The same questions in other papers
proline · molecular: metabolites · Zea mays (maize)Positive and negative results
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- no effect
- positive
- positive
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See all 7 papers →proline · molecular: metabolites · Vicia faba (faba bean)Results agree
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phenylalanine · molecular: metabolites · Vicia faba (faba bean)Results agree
1 paper in the same direction as this paper
- positive
phenylalanine · molecular: metabolites · Zea mays (maize)Results agree
1 paper in the same direction as this paper
- positive
proline · physiology: ion balance · Zea mays (maize)Results agree
3 papers in the same direction as this paper
- positive
- positive
- positive
proline · physiology: ion balance · Vicia faba (faba bean)Results agree
3 papers in the same direction as this paper
- positive
- positive
- positive
salinity · physiology: photosynthesis · Zea mays (maize)Results differ
57 papers in the same direction as this paper · 1 in the opposite direction
- positive
- negative
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See all 59 papers →salinity · physiology: ion balance · Vicia faba (faba bean)Positive and negative results
13 papers in the same direction as this paper · 1 in the opposite direction
- positive
- negative
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See all 15 papers →8 of 10 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.