Abstract
1. The concentration of chlorophyll decreased and the concentration of alpha-amino nitrogen and the absolute and specific activity of peptidase increased in disks of tobacco leaf incubated on water in darkness at 25 degrees . 2. Although 6-furfurylaminopurine (kinetin) applied to the disks inhibited the increase in activity of peptidase after 4 days, this effect was too slow to account for the significant inhibition of increase in alpha-amino nitrogen after 24hr. 3. Treating with kinetin also delayed loss of chlorophyll and soluble protein, though not until 4 and 8 days respectively. 4. The only significant effect of treating disks prepared from tobacco plants deficient in nitrogen with kinetin for 8 days was to inhibit the increase in alpha-amino nitrogen. 5. Adding kinetin (5mmum to 5mum) in vitro did not affect the activity of peptidase extracted from tobacco leaf.
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Claims 8
Claim · model-written summary
Chlorophyll concentration decreased in tobacco leaf disks incubated on water in darkness.
- Taxon
- tobacco leaf
Nicotiana tabacume0 - Outcome
- concentration of chlorophylle0
- Direction
- decreasede0
- Qualifier
- incubated on water in darknesse0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The concentration of chlorophyll decreased and the concentration of alpha-amino nitrogen and the absolute and specific activity of peptidase increased in disks of tobacco leaf incubated on water in darkness at 25 degrees”
Claim · model-written summary
Alpha-amino nitrogen concentration increased in tobacco leaf disks incubated on water in darkness.
- Taxon
- tobacco leafNicotiana tabacume0
- Outcome
- concentration of alpha-amino nitrogene0
- Direction
- increasede0
- Qualifier
- incubated on water in darknesse0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The concentration of chlorophyll decreased and the concentration of alpha-amino nitrogen and the absolute and specific activity of peptidase increased in disks of tobacco leaf incubated on water in darkness at 25 degrees”
Claim · model-written summary
Absolute and specific peptidase activity increased in tobacco leaf disks incubated on water in darkness.
- Taxon
- tobacco leafNicotiana tabacume0
- Outcome
- absolute and specific activity of peptidasee0
- Direction
- increasede0
- Qualifier
- incubated on water in darknesse0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The concentration of chlorophyll decreased and the concentration of alpha-amino nitrogen and the absolute and specific activity of peptidase increased in disks of tobacco leaf incubated on water in darkness at 25 degrees”
Claim · model-written summary
Kinetin inhibited the increase in peptidase activity after 4 days.
- Taxon
- tobacco leafNicotiana tabacume0
- Treatment
- 6-furfurylaminopurine (kinetin)e1
- Outcome
- activity of peptidasee1
- Direction
- inhibitede1
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The concentration of chlorophyll decreased and the concentration of alpha-amino nitrogen and the absolute and specific activity of peptidase increased in disks of tobacco leaf incubated on water in darkness at 25 degrees”
e1“6-furfurylaminopurine (kinetin) applied to the disks inhibited the increase in activity of peptidase after 4 days”
Claim · model-written summary
Kinetin significantly inhibited the increase in alpha-amino nitrogen after 24 hours.
- Taxon
- tobacco leafNicotiana tabacume0
- Treatment
- 6-furfurylaminopurine (kinetin)e1
- Outcome
- increase in alpha-amino nitrogene2
- Direction
- inhibitione2
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The concentration of chlorophyll decreased and the concentration of alpha-amino nitrogen and the absolute and specific activity of peptidase increased in disks of tobacco leaf incubated on water in darkness at 25 degrees”
e1“6-furfurylaminopurine (kinetin) applied to the disks inhibited the increase in activity of peptidase after 4 days”
e2“this effect was too slow to account for the significant inhibition of increase in alpha-amino nitrogen after 24hr”
Claim · model-written summary
Kinetin delayed loss of chlorophyll and soluble protein, though not until 4 and 8 days.
- Taxon
- tobacco leafNicotiana tabacume0
- Treatment
- Treating with kinetine3
- Outcome
- loss of chlorophyll and soluble proteine3
- Direction
- delayede3
- Qualifier
- not until 4 and 8 days respectivelye3
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The concentration of chlorophyll decreased and the concentration of alpha-amino nitrogen and the absolute and specific activity of peptidase increased in disks of tobacco leaf incubated on water in darkness at 25 degrees”
e3“Treating with kinetin also delayed loss of chlorophyll and soluble protein, though not until 4 and 8 days respectively”
Claim · model-written summary
In nitrogen-deficient tobacco leaf disks, kinetin for 8 days was the only significant effect, inhibiting the increase in alpha-amino nitrogen.
- Taxon
- tobacco plantsNicotiana tabacume4
- Material
- tobacco plants deficient in nitrogene4
- Treatment
- with kinetin for 8 dayse4
- Outcome
- increase in alpha-amino nitrogene4
- Direction
- inhibite4
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e4“The only significant effect of treating disks prepared from tobacco plants deficient in nitrogen with kinetin for 8 days was to inhibit the increase in alpha-amino nitrogen”
Claim · model-written summary
Adding kinetin in vitro did not affect peptidase activity extracted from tobacco leaf.
- Taxon
- tobacco leafNicotiana tabacume5
- Treatment
- Adding kinetin (5mmum to 5mum) in vitroe5
- Outcome
- activity of peptidasee5
- Direction
- did not affecte5
- Setting
- in vitroe5
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e5“Adding kinetin (5mmum to 5mum) in vitro did not affect the activity of peptidase extracted from tobacco leaf”
The same questions in other papers
kinetin · physiology: pigments · Nicotiana tabacum (tobacco)Positive and negative results
1 paper in the same direction as this paper · 4 in the opposite direction
- negative
- negative
- no effect
2 papers more in this group
See all 6 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.