Abstract
An experiment was carried out in winter season of 1995 to study the effect of variable Mn concentration on pea (Pisum sativam L.). 'Azad' pea was grown in refined sand at 6 levels ranging from acute deficiency (0.0011 mg Mn/ litre) to excess of manganese (11 mg Mn/litre). Apart from characteristic visible symptoms of the nutrient deficiency, the phytomass and seed yield were restricted in low manganese(< 0.55 mg Mn/litre). In leaves, the concentration of chlorophyll (a and b), Hill reaction activity and activities of adenosine triphosphatase and acid phosphatase were reduced and the concentration of nitrite nitrogen and activities of polyphenol oxidase and peroxidase were elevated. In leaves and seeds, the concentratioll of manganese increased with an increase in manganese supply from severe deficiency to excess. In acute manganese deficiency the number of pods was reduced, the seeds were shrivelled and developed necrotic areas. Likewise, it was similar under the conditions of excess manganese. In seeds, the concentration of protein, sugar and starch were decreased substantially and that of phenols increased under manganese stress. In the deficiency (< 0.11 mg Mn/litre) as well as in excess (11 mg Mn/litre) of manganese the activities of acid phosphatase, ex-amylase and invertase were stimulated and that of starch phosphorylase was decreased in mature seeds.
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Claims 14
Claim · model-written summary
Low manganese restricted pea phytomass and seed yield.
- Taxon
- pea
Lathyrus oleraceuse0 - Treatment
- low manganese(< 0.55 mg Mn/litre)e1
- Outcome
- phytomass and seed yielde1
- Direction
- restrictede1
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“to study the effect of variable Mn concentration on pea (Pisum sativam L.)”
e1“Apart from characteristic visible symptoms of the nutrient deficiency, the phytomass and seed yield were restricted in low manganese(< 0.55 mg Mn/litre)”
Claim · model-written summary
Variable manganese concentration reduced chlorophyll (a and b) content and Hill reaction activity in pea leaves.
- Taxon
- peaLathyrus oleraceuse0
- Organ / stage
- leavese2
- Treatment
- variable Mn concentratione0
- Outcome
- concentration of chlorophyll (a and b), Hill reaction activitye2
- Direction
- reducede2
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“to study the effect of variable Mn concentration on pea (Pisum sativam L.)”
e2“In leaves, the concentration of chlorophyll (a and b), Hill reaction activity and activities of adenosine triphosphatase and acid phosphatase were reduced and the concentration of nitrite nitrogen and activities of polyphenol oxidase and peroxidase were elevated”
Claim · model-written summary
Variable manganese concentration reduced adenosine triphosphatase and acid phosphatase activities in pea leaves.
- Taxon
- peaLathyrus oleraceuse0
- Organ / stage
- leavese2
- Treatment
- variable Mn concentratione0
- Outcome
- activities of adenosine triphosphatase and acid phosphatasee2
- Direction
- reducede2
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“to study the effect of variable Mn concentration on pea (Pisum sativam L.)”
e2“In leaves, the concentration of chlorophyll (a and b), Hill reaction activity and activities of adenosine triphosphatase and acid phosphatase were reduced and the concentration of nitrite nitrogen and activities of polyphenol oxidase and peroxidase were elevated”
Claim · model-written summary
Variable manganese concentration elevated nitrite nitrogen concentration and polyphenol oxidase and peroxidase activities in pea leaves.
- Taxon
- peaLathyrus oleraceuse0
- Organ / stage
- leavese2
- Treatment
- variable Mn concentratione0
- Outcome
- concentration of nitrite nitrogen and activities of polyphenol oxidase and peroxidasee2
- Direction
- elevatede2
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“to study the effect of variable Mn concentration on pea (Pisum sativam L.)”
e2“In leaves, the concentration of chlorophyll (a and b), Hill reaction activity and activities of adenosine triphosphatase and acid phosphatase were reduced and the concentration of nitrite nitrogen and activities of polyphenol oxidase and peroxidase were elevated”
Claim · model-written summary
Manganese concentration in pea leaves and seeds increased with increasing manganese supply.
- Taxon
- peaLathyrus oleraceuse0
- Organ / stage
- leaves and seedse3
- Treatment
- an increase in manganese supplye3
- Outcome
- concentratioll of manganesee3
- Direction
- increasede3
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“to study the effect of variable Mn concentration on pea (Pisum sativam L.)”
e3“In leaves and seeds, the concentratioll of manganese increased with an increase in manganese supply from severe deficiency to excess”
Claim · model-written summary
Acute manganese deficiency reduced the number of pea pods.
- Taxon
- peaLathyrus oleraceuse0
- Treatment
- acute manganese deficiencye4
- Outcome
- number of podse4
- Direction
- reducede4
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“to study the effect of variable Mn concentration on pea (Pisum sativam L.)”
e4“In acute manganese deficiency the number of pods was reduced, the seeds were shrivelled and developed necrotic areas. Likewise, it was similar under the conditions of excess manganese”
Claim · model-written summary
Acute manganese deficiency left pea seeds shrivelled with necrotic areas.
- Taxon
- peaLathyrus oleraceuse0
- Organ / stage
- seedse4
- Treatment
- acute manganese deficiencye4
- Outcome
- seedse4
- Direction
- shrivellede4
- Qualifier
- developed necrotic arease4
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“to study the effect of variable Mn concentration on pea (Pisum sativam L.)”
e4“In acute manganese deficiency the number of pods was reduced, the seeds were shrivelled and developed necrotic areas. Likewise, it was similar under the conditions of excess manganese”
Claim · model-written summary
Excess manganese had a similar effect on pea pod number as acute manganese deficiency.
- Taxon
- peaLathyrus oleraceuse0
- Treatment
- conditions of excess manganesee4
- Outcome
- number of podse4
- Direction
- similare4
- Comparator
- acute manganese deficiencye4
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“to study the effect of variable Mn concentration on pea (Pisum sativam L.)”
e4“In acute manganese deficiency the number of pods was reduced, the seeds were shrivelled and developed necrotic areas. Likewise, it was similar under the conditions of excess manganese”
Claim · model-written summary
Manganese stress decreased protein, sugar and starch concentrations in pea seeds.
- Taxon
- peaLathyrus oleraceuse0
- Organ / stage
- seedse5
- Treatment
- manganese stresse5
- Outcome
- protein, sugar and starche5
- Direction
- decreasede5
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“to study the effect of variable Mn concentration on pea (Pisum sativam L.)”
e5“In seeds, the concentration of protein, sugar and starch were decreased substantially and that of phenols increased under manganese stress”
Claim · model-written summary
Manganese stress increased phenol concentration in pea seeds.
- Taxon
- peaLathyrus oleraceuse0
- Organ / stage
- seedse5
- Treatment
- manganese stresse5
- Outcome
- phenolse5
- Direction
- increasede5
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“to study the effect of variable Mn concentration on pea (Pisum sativam L.)”
e5“In seeds, the concentration of protein, sugar and starch were decreased substantially and that of phenols increased under manganese stress”
Claim · model-written summary
Manganese deficiency stimulated acid phosphatase, ex-amylase and invertase activities in mature pea seeds.
- Taxon
- peaLathyrus oleraceuse0
- Organ / stage
- mature seedse6
- Treatment
- deficiency (< 0.11 mg Mn/litre)e6
- Outcome
- activities of acid phosphatase, ex-amylase and invertasee6
- Direction
- stimulatede6
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“to study the effect of variable Mn concentration on pea (Pisum sativam L.)”
e6“In the deficiency (< 0.11 mg Mn/litre) as well as in excess (11 mg Mn/litre) of manganese the activities of acid phosphatase, ex-amylase and invertase were stimulated and that of starch phosphorylase was decreased in mature seeds”
Claim · model-written summary
Excess manganese stimulated acid phosphatase, ex-amylase and invertase activities in mature pea seeds.
- Taxon
- peaLathyrus oleraceuse0
- Organ / stage
- mature seedse6
- Treatment
- excess (11 mg Mn/litre)e6
- Outcome
- activities of acid phosphatase, ex-amylase and invertasee6
- Direction
- stimulatede6
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“to study the effect of variable Mn concentration on pea (Pisum sativam L.)”
e6“In the deficiency (< 0.11 mg Mn/litre) as well as in excess (11 mg Mn/litre) of manganese the activities of acid phosphatase, ex-amylase and invertase were stimulated and that of starch phosphorylase was decreased in mature seeds”
Claim · model-written summary
Manganese deficiency decreased starch phosphorylase activity in mature pea seeds.
- Taxon
- peaLathyrus oleraceuse0
- Organ / stage
- mature seedse6
- Treatment
- deficiency (< 0.11 mg Mn/litre)e6
- Outcome
- starch phosphorylasee6
- Direction
- decreasede6
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“to study the effect of variable Mn concentration on pea (Pisum sativam L.)”
e6“In the deficiency (< 0.11 mg Mn/litre) as well as in excess (11 mg Mn/litre) of manganese the activities of acid phosphatase, ex-amylase and invertase were stimulated and that of starch phosphorylase was decreased in mature seeds”
Claim · model-written summary
Excess manganese decreased starch phosphorylase activity in mature pea seeds.
- Taxon
- peaLathyrus oleraceuse0
- Organ / stage
- mature seedse6
- Treatment
- excess (11 mg Mn/litre)e6
- Outcome
- starch phosphorylasee6
- Direction
- decreasede6
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“to study the effect of variable Mn concentration on pea (Pisum sativam L.)”
e6“In the deficiency (< 0.11 mg Mn/litre) as well as in excess (11 mg Mn/litre) of manganese the activities of acid phosphatase, ex-amylase and invertase were stimulated and that of starch phosphorylase was decreased in mature seeds”
The same questions in other papers
manganese atom · yield · Lathyrus oleraceus (pea)Results differ
7 papers in the same direction as this paper · 1 in the opposite direction
- no effect
- positive
- positive
5 papers more in this group
See all 9 papers →manganese atom · physiology: pigments · Lathyrus oleraceus (pea)Positive and negative results
1 paper in the same direction as this paper · 2 in the opposite direction
- positive
- positive
- negative
manganese atom · quality: protein · Lathyrus oleraceus (pea)Positive and negative results
1 paper in the same direction as this paper · 2 in the opposite direction
- positive
- positive
- negative
manganese atom · molecular: metabolites · Lathyrus oleraceus (pea)Results agree
2 papers in the same direction as this paper
- negative
- negative
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.