Abstract
SUMMARY Effects of flooding the root system on nitrogen status, leaf chlorosis and shoot growth have been studied in barley seedlings. Within 2 days, oxygen in the soil water decreased to a low concentration (< 2%), and net uptake of nitrogen to shoots was inhibited. Simultaneously, there was a decrease in the average concentration of nitrogen in shoots, due to translocation from older leaves to younger expanding ones. These changes pieceded the onset of chlorosis of the older leaves. It is suggested that inhibition of nitrogen uptake, and the consequent redistribution of nitrogen within the shoot, are important contributory factors in the early senescence of leaves and the retarded growth of shoots in flooded plants.
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Claims 6
Claim · model-written summary
Within 2 days of flooding, oxygen in the soil water decreased to below 2%.
- Taxon
- barley
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Hordeum vulgaree0 - Treatment
- flooding the root systeme0
- Outcome
- oxygen in the soil watere1
- Direction
- decreasede1
- Value
- < 2%e1
- Qualifier
- Within 2 dayse1
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
.jpg?width=500)
Verbatim
e0“Effects of flooding the root system on nitrogen status, leaf chlorosis and shoot growth have been studied in barley seedlings”
e1“Within 2 days, oxygen in the soil water decreased to a low concentration (< 2%)”
Claim · model-written summary
Flooding inhibited net uptake of nitrogen to barley shoots.
- Taxon
- barleyHordeum vulgaree0
- Treatment
- flooding the root systeme0
- Outcome
- net uptake of nitrogen to shootse2
- Direction
- inhibitede2
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Effects of flooding the root system on nitrogen status, leaf chlorosis and shoot growth have been studied in barley seedlings”
e2“Within 2 days, oxygen in the soil water decreased to a low concentration (< 2%), and net uptake of nitrogen to shoots was inhibited”
Claim · model-written summary
Flooding decreased the average nitrogen concentration in barley shoots.
- Taxon
- barleyHordeum vulgaree0
- Treatment
- flooding the root systeme0
- Outcome
- the average concentration of nitrogen in shootse3
- Direction
- decreasee3
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Effects of flooding the root system on nitrogen status, leaf chlorosis and shoot growth have been studied in barley seedlings”
e3“Simultaneously, there was a decrease in the average concentration of nitrogen in shoots, due to translocation from older leaves to younger expanding ones”
Claim · model-written summary
The decrease in shoot nitrogen concentration in flooded barley is attributed to translocation from older leaves to younger expanding leaves.
- Taxon
- barleyHordeum vulgaree0
- Outcome
- average concentration of nitrogen in shootse3
- Qualifier
- due to translocation from older leaves to younger expanding onese3
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Effects of flooding the root system on nitrogen status, leaf chlorosis and shoot growth have been studied in barley seedlings”
e3“Simultaneously, there was a decrease in the average concentration of nitrogen in shoots, due to translocation from older leaves to younger expanding ones”
Claim · model-written summary
Onset of chlorosis of the older leaves followed the changes in nitrogen status in barley.
- Taxon
- barleyHordeum vulgaree0
- Organ / stage
- older leavese4
- Outcome
- onset of chlorosis of the older leavese4
- Qualifier
- These changes pieceded the onsete4
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Effects of flooding the root system on nitrogen status, leaf chlorosis and shoot growth have been studied in barley seedlings”
e4“These changes pieceded the onset of chlorosis of the older leaves”
Claim · model-written summary
Inhibited nitrogen uptake and nitrogen redistribution within the shoot are suggested to contribute to early leaf senescence and retarded shoot growth in flooded barley.
- Taxon
- barleyHordeum vulgaree0
- Compound
- nitrogene5
- Outcome
- early senescence of leaves and the retarded growth of shootse5
- Qualifier
- inhibition of nitrogen uptake, and the consequent redistribution of nitrogen within the shoote5
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Effects of flooding the root system on nitrogen status, leaf chlorosis and shoot growth have been studied in barley seedlings”
e5“It is suggested that inhibition of nitrogen uptake, and the consequent redistribution of nitrogen within the shoot, are important contributory factors in the early senescence of leaves and the retarded growth of shoots in flooded plants”
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- negative
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See all 9 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.