Abstract
A study was made of chages in the activities of enzymes related to the biosynthesis of aromatic compounds in etiolated mung bean seedlings during their growth. Shikimate: NADP oxidoreductase activity in the root-shoot axes increased rapidly to attain its highest activity the 4th day after sowing, and remained at that level over the experimental period of 7 days. 5-Dehydroquinate hydro-lyase activity continuously increased for at least 7 days. In the cotyledons, a gradual decrease in the activities of these enzymes occurred. Phenylalanine ammonia-lyase activity in root-shoot axes gradually increased showing a maximum on the 6th day. The highest specific activity, on a protein basis, of this enzyme was seen in the initial stage of growth. In the cotyledons, a rise in total activity appeared on the 2nd day. Tyrosine ammonia-lyase activity was very low as compared with phenylalanine ammonia-lyase. The enzyme activities of light-germinated seedlings were compared to those of dark-germinated seedlings on the 7th day. Light had practically no significant effect on the appearance of shikimate: NADP oxidoreductase and 5-dehydroquinate hydro-lyase activities. On the other hand, a marked effect from the light on the rise of phenylalanine ammonia-lyase and tyrosine ammonia-lyase activities was found, especially in the epicotyl-plumules. The results are discussed with respect to the metabolism of alicyclic acids such as shikimic acid in the developing mung bean seedlings.
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Claims 9
Claim · model-written summary
Shikimate:NADP oxidoreductase activity in root-shoot axes of mung bean rose rapidly to a peak on the 4th day after sowing.
- Taxon
- mung bean
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Vigna radiatae0 - Organ / stage
- root-shoot axese1
- Gene
- Shikimate: NADP oxidoreductasee1
- Outcome
- activitye1
- Direction
- increasede1
- Qualifier
- highest activity the 4th day after sowinge1
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
.jpg?width=500)
Verbatim
e0“in etiolated mung bean seedlings during their growth”
e1“Shikimate: NADP oxidoreductase activity in the root-shoot axes increased rapidly to attain its highest activity the 4th day after sowing, and remained at that level over the experimental period of 7 days”
Claim · model-written summary
5-Dehydroquinate hydro-lyase activity in mung bean seedlings increased for at least 7 days.
- Taxon
- mung beanVigna radiatae0
- Gene
- 5-Dehydroquinate hydro-lyasee2
- Outcome
- activitye2
- Direction
- increasede2
- Qualifier
- for at least 7 dayse2
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“in etiolated mung bean seedlings during their growth”
e2“5-Dehydroquinate hydro-lyase activity continuously increased for at least 7 days”
Claim · model-written summary
Enzyme activities in cotyledons of mung bean seedlings decreased gradually.
- Taxon
- mung beanVigna radiatae0
- Organ / stage
- cotyledonse3
- Outcome
- activitiese3
- Direction
- decreasee3
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“in etiolated mung bean seedlings during their growth”
e3“In the cotyledons, a gradual decrease in the activities of these enzymes occurred”
Claim · model-written summary
Phenylalanine ammonia-lyase activity in root-shoot axes of mung bean rose gradually to a maximum on the 6th day.
- Taxon
- mung beanVigna radiatae0
- Organ / stage
- root-shoot axese4
- Gene
- Phenylalanine ammonia-lyasee4
- Outcome
- activitye4
- Direction
- increasede4
- Qualifier
- a maximum on the 6th daye4
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“in etiolated mung bean seedlings during their growth”
e4“Phenylalanine ammonia-lyase activity in root-shoot axes gradually increased showing a maximum on the 6th day”
Claim · model-written summary
The specific activity of phenylalanine ammonia-lyase was highest in the initial stage of growth.
- Taxon
- mung beanVigna radiatae0
- Gene
- Phenylalanine ammonia-lyasee4
- Outcome
- specific activitye5
- Direction
- higheste5
- Qualifier
- in the initial stage of growthe5
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“in etiolated mung bean seedlings during their growth”
e4“Phenylalanine ammonia-lyase activity in root-shoot axes gradually increased showing a maximum on the 6th day”
e5“The highest specific activity, on a protein basis, of this enzyme was seen in the initial stage of growth”
Claim · model-written summary
Phenylalanine ammonia-lyase total activity in cotyledons of mung bean rose on the 2nd day.
- Taxon
- mung beanVigna radiatae0
- Organ / stage
- cotyledonse6
- Gene
- Phenylalanine ammonia-lyasee4
- Outcome
- total activitye6
- Direction
- risee6
- Qualifier
- on the 2nd daye6
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“in etiolated mung bean seedlings during their growth”
e4“Phenylalanine ammonia-lyase activity in root-shoot axes gradually increased showing a maximum on the 6th day”
e6“In the cotyledons, a rise in total activity appeared on the 2nd day”
Claim · model-written summary
Tyrosine ammonia-lyase activity in mung bean was very low compared with phenylalanine ammonia-lyase.
- Taxon
- mung beanVigna radiatae0
- Gene
- Tyrosine ammonia-lyasee7
- Outcome
- activitye7
- Direction
- very lowe7
- Comparator
- phenylalanine ammonia-lyasee7
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“in etiolated mung bean seedlings during their growth”
e7“Tyrosine ammonia-lyase activity was very low as compared with phenylalanine ammonia-lyase”
Claim · model-written summary
Light had no significant effect on the appearance of shikimate:NADP oxidoreductase and 5-dehydroquinate hydro-lyase activities.
- Taxon
- mung beanVigna radiatae0
- Treatment
- Lighte1
- Gene
- shikimate: NADP oxidoreductase and 5-dehydroquinate hydro-lyasee1
- Outcome
- appearance of shikimate: NADP oxidoreductase and 5-dehydroquinate hydro-lyase activitiese1
- Direction
- no significant effecte1
- Comparator
- dark-germinated seedlingse2
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“in etiolated mung bean seedlings during their growth”
e1“Light had practically no significant effect on the appearance of shikimate: NADP oxidoreductase and 5-dehydroquinate hydro-lyase activities”
e2“The enzyme activities of light-germinated seedlings were compared to those of dark-germinated seedlings on the 7th day”
Claim · model-written summary
Light markedly increased phenylalanine and tyrosine ammonia-lyase activities in mung bean, especially in epicotyl-plumules.
- Taxon
- mung beanVigna radiatae0
- Organ / stage
- epicotyl-plumulese3
- Treatment
- lighte3
- Gene
- phenylalanine ammonia-lyase and tyrosine ammonia-lyasee3
- Outcome
- activitiese3
- Direction
- risee3
- Comparator
- dark-germinated seedlingse2
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“in etiolated mung bean seedlings during their growth”
e2“The enzyme activities of light-germinated seedlings were compared to those of dark-germinated seedlings on the 7th day”
e3“a marked effect from the light on the rise of phenylalanine ammonia-lyase and tyrosine ammonia-lyase activities was found, especially in the epicotyl-plumules”
The same questions in other papers
light · molecular: metabolites · Vigna radiata (mung bean)Positive and negative results
4 papers in the same direction as this paper · 8 reporting no difference from an alternative
- positive
- positive
- positive
9 papers more in this group
See all 13 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.