Abstract
The ABA-deficient wilty pea (Pisum sativum L.) and its wild-type (WT) were grown at two levels of nitrogen supply (0.5 and 5.0 mM) for 5-6 weeks from sowing, to determine whether leaf ABA status altered the leaf growth response to N deprivation. Plants were grown at high relative humidity to prevent wilting of the wilty peas. Irrespective of N supply, expanding wilty leaflets had ca 50% less ABA than WT leaflets but similar ethylene evolution rates. Fully expanded wilty leaflets had lower relative water contents (RWC) and were 10-60% smaller in area (according to the node of measurement) than WT leaflets. However, there were no genotypic differences in plant relative leaf expansion rate (RLER). Growth of both genotypes at 0.5 mM N increased the RWC of fully expanded leaflets, but did not alter ethylene evolution or ABA concentration of expanding leaflets. Plants grown at 0.5 mM N showed a 20-30% reduction in RLER, which was similar in magnitude in both wilty and WT peas. Thus,leaf ABA status did not alter the leaf growth response to N deprivation.
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Claims 9
Claim · model-written summary
Expanding wilty leaflets had about 50% less ABA than wild-type leaflets at both nitrogen supplies.
- Taxon
- pea
Lathyrus oleraceust0 - Material
- wiltye0
- Organ / stage
- expanding wilty leafletse0
- Outcome
- ABAe0
- Direction
- lesse0
- Value
- ca 50%e0
- Comparator
- WT leafletse0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Irrespective of N supply, expanding wilty leaflets had ca 50% less ABA than WT leaflets”
t0“wild-type peas”
Claim · model-written summary
Expanding wilty and wild-type leaflets had similar ethylene evolution rates.
- Taxon
- peasLathyrus oleraceust0
- Material
- wiltye0
- Outcome
- ethylene evolution ratese0
- Direction
- similare0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“expanding wilty leaflets had ca 50% less ABA than WT leaflets but similar ethylene evolution rates”
t0“ABA-deficient and wild-type peas”
Claim · model-written summary
Fully expanded wilty leaflets had lower relative water content than wild type.
- Taxon
- peaLathyrus oleraceust0
- Material
- wiltye0
- Organ / stage
- Fully expanded wilty leafletse0
- Outcome
- relative water contents (RWC)e0
- Direction
- lowere0
- Comparator
- WT leafletse0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Fully expanded wilty leaflets had lower relative water contents (RWC) and were 10-60% smaller in area (according to the node of measurement) than WT leaflets”
t0“wild-type peas”
Claim · model-written summary
Fully expanded wilty leaflets were 10-60% smaller in area than wild type.
- Taxon
- peaLathyrus oleraceust0
- Material
- wiltye0
- Outcome
- areae0
- Direction
- smallere0
- Value
- 10-60%e0
- Comparator
- WT leafletse0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Fully expanded wilty leaflets had lower relative water contents (RWC) and were 10-60% smaller in area (according to the node of measurement) than WT leaflets”
t0“wild-type peas”
Claim · model-written summary
Plant relative leaf expansion rate did not differ between genotypes.
- Taxon
- peaLathyrus oleraceust0
- Outcome
- plant relative leaf expansion rate (RLER)e0
- Direction
- no genotypic differencese0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“there were no genotypic differences in plant relative leaf expansion rate (RLER)”
t0“wild-type peas”
Claim · model-written summary
Low nitrogen increased relative water content in expanded leaflets of both genotypes.
- Taxon
- peaLathyrus oleraceust0
- Treatment
- 0.5 mM Ne0
- Outcome
- RWC of fully expanded leafletse0
- Direction
- increasede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Growth of both genotypes at 0.5 mM N increased the RWC of fully expanded leaflets”
t0“wild-type peas”
Claim · model-written summary
Low nitrogen did not alter ethylene evolution in expanding leaflets.
- Taxon
- peaLathyrus oleraceust0
- Treatment
- 0.5 mM Ne0
- Outcome
- ethylene evolutione0
- Direction
- did not altere0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Growth of both genotypes at 0.5 mM N increased the RWC of fully expanded leaflets, but did not alter ethylene evolution or ABA concentration of expanding leaflets”
t0“wild-type peas”
Claim · model-written summary
Low nitrogen did not alter ABA concentration in expanding leaflets.
- Taxon
- peaLathyrus oleraceust0
- Treatment
- 0.5 mM Ne0
- Outcome
- ABA concentratione0
- Direction
- did not altere0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Growth of both genotypes at 0.5 mM N increased the RWC of fully expanded leaflets, but did not alter ethylene evolution or ABA concentration of expanding leaflets”
t0“wild-type peas”
Claim · model-written summary
At 0.5 mM nitrogen, relative leaf expansion rate fell 20-30% similarly in both genotypes.
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Plants grown at 0.5 mM N showed a 20-30% reduction in RLER, which was similar in magnitude in both wilty and WT peas”
The same questions in other papers
nitrogen · growth · Lathyrus oleraceus (pea)Positive and negative results
15 papers in the same direction as this paper · 19 in the opposite direction
- positive
- positive
- positive
31 papers more in this group
See all 35 papers →nitrogen · physiology: hormones · Lathyrus oleraceus (pea)Results agree
2 papers in the same direction as this paper
- no effect
- no effect
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.