Abstract
Nineteen Arabidopsis accessions grown at low (LOW N) and high (HIGH N) nitrate supplies were labelled using (15)N to trace nitrogen remobilization to the seeds. Effects of genotype and nutrition were examined. Nitrate availability affected biomass and yield, and highly modified the nitrogen concentration in the dry remains. Surprisingly, variations of one-seed dry weight (DW(1S)) and harvest index (HI) were poorly affected by nutrition. Nitrogen harvest index (NHI) was highly correlated with HI and showed that nitrogen use efficiency (NUE) was increased at LOW N. Nitrogen remobilization efficiency (NRE), as (15)N partitioning in seeds ((15)NHI), was also higher at LOW N. The relative specific abundance (RSA) in seeds and whole plants indicated that the (14)NO(3) absorbed post-labelling was mainly allocated to the seeds (SEEDS) at LOW N, but to the dry remains (DR) at HIGH N. Nitrogen concentration (N%) in the DR was then 4-fold higher at HIGH N compared with LOW N, whilst N% in seeds was poorly modified. Although NHI and (15)NHI were highly correlated to HI, significant variations in NUE and NRE were identified using normalization to HI. New insights provided in this report are helpful for the comprehension of NUE and NRE concepts in Arabidopsis as well as in crops and especially in Brassica napus.
Abstract from the paper’s OpenAlex record; open copy licensed cc-by-nc. Read at the source ↗
The text the model read, with the source record’s inline markup (italics, sub- and superscripts) rendered and its character entities decoded; quote offsets refer to the raw text.
Claims 12
Claim · model-written summary
Nitrate availability affected biomass and yield.
- Taxon
- Arabidopsis thaliana
Arabidopsis thalianat0 - Treatment
- Nitrate availabilitye0
- Outcome
- biomass and yielde0
Not reportedComparatorDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Nitrate availability affected biomass and yield, and highly modified the nitrogen concentration in the dry remains.”
t0“Arabidopsis thaliana”
Claim · model-written summary
Nitrate availability highly modified nitrogen concentration in dry remains.
- Taxon
- Arabidopsis thalianaArabidopsis thalianat0
- Organ / stage
- dry remainse0
- Treatment
- Nitrate availabilitye0
- Outcome
- nitrogen concentratione0
Not reportedComparatorDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Nitrate availability affected biomass and yield, and highly modified the nitrogen concentration in the dry remains.”
t0“Arabidopsis thaliana”
Claim · model-written summary
Nutrition poorly affected one-seed dry weight and harvest index.
- Taxon
- Arabidopsis thalianaArabidopsis thalianat0
- Treatment
- nutritione0
- Outcome
- one-seed dry weight (DW(1S)) and harvest index (HI)e0
- Qualifier
- poorly affectede0
Not reportedComparatorDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Surprisingly, variations of one-seed dry weight (DW(1S)) and harvest index (HI) were poorly affected by nutrition.”
t0“Arabidopsis thaliana”
Claim · model-written summary
Nitrogen harvest index was highly correlated with harvest index.
- Taxon
- Arabidopsis thalianaArabidopsis thalianat0
- Outcome
- Nitrogen harvest indexe0
- Comparator
- HIe0
Not reportedDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Nitrogen harvest index (NHI) was highly correlated with HI”
t0“Arabidopsis thaliana”
Claim · model-written summary
Nitrogen use efficiency increased at low nitrogen supply.
- Taxon
- Arabidopsis thalianaArabidopsis thalianat0
- Treatment
- LOW Ne0
- Outcome
- nitrogen use efficiencye0
- Direction
- increasede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“nitrogen use efficiency (NUE) was increased at LOW N”
t0“Arabidopsis thaliana”
Claim · model-written summary
Nitrogen remobilization efficiency was higher at low nitrogen supply.
- Taxon
- Arabidopsis thalianaArabidopsis thalianat0
- Treatment
- LOW Ne0
- Outcome
- Nitrogen remobilization efficiencye0
- Direction
- highere0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Nitrogen remobilization efficiency (NRE), as (15)N partitioning in seeds ((15)NHI), was also higher at LOW N.”
t0“Arabidopsis thaliana”
Claim · model-written summary
Post-labelling nitrate was mainly allocated to seeds at low nitrogen supply.
- Taxon
- Arabidopsis thalianaArabidopsis thalianat0
- Treatment
- LOW Ne0
- Outcome
- mainly allocated to the seedse0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“the (14)NO(3) absorbed post-labelling was mainly allocated to the seeds (SEEDS) at LOW N, but to the dry remains (DR) at HIGH N.”
t0“Arabidopsis thaliana”
Claim · model-written summary
Post-labelling nitrate was allocated to dry remains at high nitrogen supply.
- Taxon
- Arabidopsis thalianaArabidopsis thalianat0
- Treatment
- HIGH Ne0
- Outcome
- dry remainse0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“the (14)NO(3) absorbed post-labelling was mainly allocated to the seeds (SEEDS) at LOW N, but to the dry remains (DR) at HIGH N.”
t0“Arabidopsis thaliana”
Claim · model-written summary
Nitrogen concentration in dry remains was fourfold higher at high nitrogen supply than low supply.
- Taxon
- Arabidopsis thalianaArabidopsis thalianat0
- Organ / stage
- DRe0
- Treatment
- HIGH Ne0
- Outcome
- Nitrogen concentratione0
- Direction
- highere0
- Value
- 4-folde0
- Comparator
- LOW Ne0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Nitrogen concentration (N%) in the DR was then 4-fold higher at HIGH N compared with LOW N, whilst N% in seeds was poorly modified.”
t0“Arabidopsis thaliana”
Claim · model-written summary
Seed nitrogen concentration was poorly modified by nitrogen supply.
- Taxon
- Arabidopsis thalianaArabidopsis thalianat0
- Treatment
- HIGH Ne0
- Outcome
- N% in seedse0
- Qualifier
- poorly modifiede0
- Comparator
- LOW Ne0
Not reportedDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Nitrogen concentration (N%) in the DR was then 4-fold higher at HIGH N compared with LOW N, whilst N% in seeds was poorly modified.”
t0“Arabidopsis thaliana”
Claim · model-written summary
Nitrogen partitioning index was highly correlated with harvest index.
- Taxon
- Arabidopsis thalianaArabidopsis thalianat0
- Outcome
- (15)NHIe0
- Comparator
- HIe0
Not reportedDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Although NHI and (15)NHI were highly correlated to HI, significant variations in NUE and NRE were identified using normalization to HI.”
t0“Arabidopsis thaliana”
Claim · model-written summary
Normalization to harvest index identified significant variations in nitrogen use and remobilization efficiencies.
- Taxon
- Arabidopsis thalianaArabidopsis thalianat0
- Outcome
- variations in NUE and NREe0
- Qualifier
- using normalization to HIe0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“significant variations in NUE and NRE were identified using normalization to HI.”
t0“Arabidopsis thaliana”
The same questions in other papers
nitrogen · nutrient: content · Arabidopsis thaliana (thale cress)Positive and negative results
2 papers in the same direction as this paper · 3 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.