Paper · 2005 · Biologia Plantarum

Nitrogen nutrition of rice plants under salinity

E. M. Abdelgadir; M. Oka; H. Fujiyama

12
claims
23
verbatim quotes
48
citations
1
research areas
✓
Open access

Abstract

Two rice (Oryza sativa L.) cultivars, Koshihikari and Pokkali, were grown in solution culture at three concentrations of NaCl or Na2SO4 [0 (S0), 50 (S1), and 100 (S2) mmol dm-3] and three N contents [0.7 (N1), 7 (N2) and 14 (N3) mmol dm-3]. Salinity significantly decreased dry matter of both cultivars. Pokkali had better growth than Koshihikari under both saline and non-saline conditions. Applications of N enhanced development of shoot dry mass under S0 and S1 treatments up to N2. Under S2, N application had no effect on shoot dry mass of both cultivars. Root dry mass of both cultivars decreased with increasing N application at S1 and S2. Shoot and root NO3-N content in both rice cultivars increased with increasing N concentration in the nutrient solutions. The absorption of NO3-N was less in Koshihikari than Pokkali plants, and also was much less in Cl- than SO4 2- salinity suggesting the antagonism between Cl- and NO3 -. In addition a significant negative correlation between concentrations of NO3-N and Cl- in the shoots or roots was observed in both cultivars

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Claims 12

Intervention effectobservedoriginal resultnegativesignificant (as stated)measured

Claim · model-written summary

Salinity significantly decreased dry matter in both rice cultivars.

Treatment
Salinitye0
Outcome
dry mattere0
Direction
decreasede0

Not reportedComparator

Organisms pictured · Representative pictures of the matched species, not figures from the paper.

Oryza sativa
Oryza sativa · Taxon · picture from its Wikimedia Commons categoryDesmanthus4food · CC BY-SA 3.0 us · Wikimedia Commons ↗

Verbatim

e0

“Salinity significantly decreased dry matter of both cultivars.”

✓ located verbatim in the source · abstract, characters 241–303 · show in text ↑
t0

“rice plants”

✓ located verbatim in the source · title, characters 22–33 · show in text ↑
Observationobservedoriginal resultpositivemeasured

Claim · model-written summary

Pokkali grew better than Koshihikari under saline and nonsaline conditions.

Material
Pokkalie0
Outcome
growthe0
Direction
bettere0
Qualifier
under both saline and non-saline conditionse0
Comparator
Koshihikarie0

Organisms pictured · Representative pictures of the matched species, not figures from the paper.

Oryza sativa
Oryza sativa · Taxon · picture from its Wikimedia Commons categoryDesmanthus4food · CC BY-SA 3.0 us · Wikimedia Commons ↗

Verbatim

e0

“Pokkali had better growth than Koshihikari under both saline and non-saline conditions.”

✓ located verbatim in the source · abstract, characters 304–391 · show in text ↑
t0

“rice plants”

✓ located verbatim in the source · title, characters 22–33 · show in text ↑
Intervention effectobservedoriginal resultpositivemeasured

Claim · model-written summary

Nitrogen application enhanced rice shoot dry mass under S0 and S1 up to N2.

Treatment
Applications of Ne0
Outcome
shoot dry masse0
Direction
enhancede0
Qualifier
under S0 and S1 treatments up to N2e0

Not reportedComparator

Organisms pictured · Representative pictures of the matched species, not figures from the paper.

Oryza sativa
Oryza sativa · Taxon · picture from its Wikimedia Commons categoryDesmanthus4food · CC BY-SA 3.0 us · Wikimedia Commons ↗

Verbatim

e0

“Applications of N enhanced development of shoot dry mass under S0 and S1 treatments up to N2.”

✓ located verbatim in the source · abstract, characters 392–485 · show in text ↑
t0

“rice plants”

✓ located verbatim in the source · title, characters 22–33 · show in text ↑
Intervention effectobservedoriginal resultno effectmeasured

Claim · model-written summary

At S2, nitrogen application had no effect on shoot dry mass of either rice cultivar.

Treatment
N applicatione0
Outcome
shoot dry masse0
Direction
no effecte0
Qualifier
Under S2e0

Not reportedComparator

Organisms pictured · Representative pictures of the matched species, not figures from the paper.

Oryza sativa
Oryza sativa · Taxon · picture from its Wikimedia Commons categoryDesmanthus4food · CC BY-SA 3.0 us · Wikimedia Commons ↗

Verbatim

e0

“Under S2, N application had no effect on shoot dry mass of both cultivars.”

✓ located verbatim in the source · abstract, characters 486–560 · show in text ↑
t0

“rice plants”

✓ located verbatim in the source · title, characters 22–33 · show in text ↑
Intervention effectobservedoriginal resultnegativemeasured

Claim · model-written summary

Increasing nitrogen reduced root dry mass of both rice cultivars at S1 and S2.

Treatment
increasing N applicatione0
Outcome
Root dry masse0
Direction
decreasede0
Qualifier
at S1 and S2e0

Not reportedComparator

Organisms pictured · Representative pictures of the matched species, not figures from the paper.

Oryza sativa
Oryza sativa · Taxon · picture from its Wikimedia Commons categoryDesmanthus4food · CC BY-SA 3.0 us · Wikimedia Commons ↗

Verbatim

e0

“Root dry mass of both cultivars decreased with increasing N application at S1 and S2.”

✓ located verbatim in the source · abstract, characters 561–646 · show in text ↑
t0

“rice plants”

✓ located verbatim in the source · title, characters 22–33 · show in text ↑
Associationobservedoriginal resultmeasured

Claim · model-written summary

Shoot nitrate-N content increased with nutrient-solution nitrogen concentration in both rice cultivars.

Treatment
increasing N concentration in the nutrient solutionse0
Outcome
NO3-N contente0
Direction
increasede0

Organisms pictured · Representative pictures of the matched species, not figures from the paper.

Oryza sativa
Oryza sativa · Taxon · picture from its Wikimedia Commons categoryDesmanthus4food · CC BY-SA 3.0 us · Wikimedia Commons ↗

Verbatim

e0

“Shoot and root NO3-N content in both rice cultivars increased with increasing N concentration in the nutrient solutions.”

✓ located verbatim in the source · abstract, characters 647–767 · show in text ↑
Associationobservedoriginal resultmeasured

Claim · model-written summary

Root nitrate-N content increased with nutrient-solution nitrogen concentration in both rice cultivars.

Treatment
increasing N concentration in the nutrient solutionse0
Outcome
root NO3-N contente0
Direction
increasede0

Organisms pictured · Representative pictures of the matched species, not figures from the paper.

Oryza sativa
Oryza sativa · Taxon · picture from its Wikimedia Commons categoryDesmanthus4food · CC BY-SA 3.0 us · Wikimedia Commons ↗

Verbatim

e0

“Shoot and root NO3-N content in both rice cultivars increased with increasing N concentration in the nutrient solutions.”

✓ located verbatim in the source · abstract, characters 647–767 · show in text ↑
Observationobservedoriginal resultmeasured

Claim · model-written summary

Koshihikari absorbed less nitrate-N than Pokkali.

Material
Koshihikarie0
Outcome
absorption of NO3-Ne0
Direction
lesse0
Comparator
Pokkalie0

Organisms pictured · Representative pictures of the matched species, not figures from the paper.

Oryza sativa
Oryza sativa · Taxon · picture from its Wikimedia Commons categoryDesmanthus4food · CC BY-SA 3.0 us · Wikimedia Commons ↗

Verbatim

e0

“The absorption of NO3-N was less in Koshihikari than Pokkali plants”

✓ located verbatim in the source · abstract, characters 768–835 · show in text ↑
t0

“rice plants”

✓ located verbatim in the source · title, characters 22–33 · show in text ↑
Observationobservedoriginal resultmeasured

Claim · model-written summary

Nitrate-N absorption was lower under chloride than sulfate salinity.

Treatment
Cl-e0
Outcome
absorption of NO3-Ne1
Direction
much lesse0
Comparator
SO4 2- salinitye0

Organisms pictured · Representative pictures of the matched species, not figures from the paper.

Oryza sativa
Oryza sativa · Taxon · picture from its Wikimedia Commons categoryDesmanthus4food · CC BY-SA 3.0 us · Wikimedia Commons ↗

Verbatim

e0

“and also was much less in Cl- than SO4 2- salinity suggesting the antagonism between Cl- and NO3 -.”

✓ located verbatim in the source · abstract, characters 837–936 · show in text ↑
e1

“The absorption of NO3-N was less in Koshihikari than Pokkali plants”

✓ located verbatim in the source · abstract, characters 768–835 · show in text ↑
t0

“Nitrogen nutrition of rice plants under salinity”

✓ located verbatim in the source · title, characters 0–48 · show in text ↑
Mechanismauthor interpretationoriginal resultnegativemeasured

Claim · model-written summary

The authors suggest chloride antagonizes nitrate absorption.

Outcome
antagonism between Cl- and NO3 -e0
Qualifier
suggesting the antagonism between Cl- and NO3 -e0

Organisms pictured · Representative pictures of the matched species, not figures from the paper.

Oryza sativa
Oryza sativa · Taxon · picture from its Wikimedia Commons categoryDesmanthus4food · CC BY-SA 3.0 us · Wikimedia Commons ↗

Verbatim

e0

“Cl- than SO4 2- salinity suggesting the antagonism between Cl- and NO3 -.”

✓ located verbatim in the source · abstract, characters 863–936 · show in text ↑
t0

“rice plants”

✓ located verbatim in the source · title, characters 22–33 · show in text ↑
Associationobservedoriginal resultsignificant (as stated)measured

Claim · model-written summary

Shoot nitrate-N and chloride concentrations were significantly negatively correlated in both rice cultivars.

Organ / stage
shootse0
Outcome
concentrations of NO3-N and Cl- in the shootse0
Direction
negativee0

Organisms pictured · Representative pictures of the matched species, not figures from the paper.

Oryza sativa
Oryza sativa · Taxon · picture from its Wikimedia Commons categoryDesmanthus4food · CC BY-SA 3.0 us · Wikimedia Commons ↗

Verbatim

e0

“a significant negative correlation between concentrations of NO3-N and Cl- in the shoots or roots was observed in both cultivars”

✓ located verbatim in the source · abstract, characters 949–1077 · show in text ↑
t0

“rice plants”

✓ located verbatim in the source · title, characters 22–33 · show in text ↑
Associationobservedoriginal resultsignificant (as stated)measured

Claim · model-written summary

Root nitrate-N and chloride concentrations were significantly negatively correlated in both rice cultivars.

Organ / stage
rootse0
Outcome
concentrations of NO3-N and Cl- in the shoots or rootse0
Direction
negativee0

Organisms pictured · Representative pictures of the matched species, not figures from the paper.

Oryza sativa
Oryza sativa · Taxon · picture from its Wikimedia Commons categoryDesmanthus4food · CC BY-SA 3.0 us · Wikimedia Commons ↗

Verbatim

e0

“a significant negative correlation between concentrations of NO3-N and Cl- in the shoots or roots was observed in both cultivars”

✓ located verbatim in the source · abstract, characters 949–1077 · show in text ↑
t0

“rice plants”

✓ located verbatim in the source · title, characters 22–33 · show in text ↑

salinity · growth · Oryza sativa (rice)Positive and negative results

296 papers: 37 positive, 259 negative or no effect

258 papers in the same direction as this paper · 37 in the opposite direction

  1. negative
  2. positive
  3. positive

292 papers more in this group

See all 296 papers →

nitrogen · growth · Oryza sativa (rice)Positive and negative results

511 papers: 402 positive, 109 negative or no effect

108 papers in the same direction as this paper · 402 in the opposite direction

  1. positive
  2. positive
  3. positive

507 papers more in this group

See all 511 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.