Abstract
A chilling episode of a few hours damaged root ammonium absorption in a cultivated tomato ( Lycopersicon esculentum cv. T‐5), but not in a wild congener from high altitudes ( Lycopersicon hirsutum LA1778). In the cultivar, ammonium influx was strongly temperature dependent and showed the residual effects of chilling, whereas ammonium efflux was nearly temperature invariant and showed no persistent effects. A 2 h exposure to 5 °C significantly depressed subsequent ammonium absorption at 20 °C, and about 12 h at 20 °C was required for recovery. For both the cultivated and wild species, rerooted cuttings were slightly less sensitive to chilling than seedlings. The relative inhibition (mean ± SE) of ammonium absorption before and after chilling was 58·4 ± 2·5% for the cultivated species and 29·0 ± 9·1% for the wild species. The F 1 hybrid between the species showed a relative inhibition of 52·4 ± 3·6%, suggesting that chilling sensitivity may be dominant. In a backcross of the hybrid to L. esculentum , the phenotypic distribution of the relative inhibition of ammonium absorption indicated that this trait is segregating.
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Claims 12
Claim · model-written summary
A brief chilling episode damaged root ammonium absorption in cultivated tomato.
- Taxon
- tomato
Solanum lycopersicume0 - Material
- Lycopersicon esculentum cv. T‐5e0
- Treatment
- chilling episode of a few hourse0
- Outcome
- root ammonium absorptione0
- Direction
- damagede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“A chilling episode of a few hours damaged root ammonium absorption in a cultivated tomato ( Lycopersicon esculentum cv. T‐5)”
Claim · model-written summary
The same chilling episode did not damage absorption in the wild congener.
- Taxon
- tomatoSolanum lycopersicumt0
- Material
- Lycopersicon hirsutum LA1778e0
- Treatment
- chillingt0
- Direction
- no_changeinferrede0
Not reportedComparatorOutcome
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“but not in a wild congener from high altitudes ( Lycopersicon hirsutum LA1778).”
t0“chilling sensitivity of root ammonium influx in a cultivated and wild tomato”
Claim · model-written summary
Cultivar ammonium influx was strongly temperature dependent and retained chilling effects.
- Taxon
- tomatoSolanum lycopersicumt0
- Material
- cultivare0
- Treatment
- chillinge0
- Outcome
- ammonium influxe0
- Qualifier
- strongly temperature dependente0
Not reportedDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“In the cultivar, ammonium influx was strongly temperature dependent and showed the residual effects of chilling”
t0“tomato”
Claim · model-written summary
Cultivar ammonium efflux was nearly temperature invariant and had no persistent chilling effect.
- Taxon
- tomatoSolanum lycopersicumt0
- Material
- cultivatedt0
- Treatment
- chillingt0
- Outcome
- ammonium effluxe0
- Direction
- no persistent effectse0
- Qualifier
- nearly temperature invariante0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“ammonium efflux was nearly temperature invariant and showed no persistent effects.”
t0“chilling sensitivity of root ammonium influx in a cultivated and wild tomato”
Claim · model-written summary
Two hours at 5 °C significantly depressed later ammonium absorption at 20 °C.
- Taxon
- tomatoSolanum lycopersicumt0
- Treatment
- 2 h exposure to 5 °Ce0
- Outcome
- subsequent ammonium absorptione0
- Direction
- depressede0
- Value
- 5 °Ce0
- Qualifier
- at 20 °Ce0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“A 2 h exposure to 5 °C significantly depressed subsequent ammonium absorption at 20 °C”
t0“tomato”
Claim · model-written summary
Recovery of absorption after chilling required about 12 hours at 20 °C.
- Taxon
- tomatoSolanum lycopersicumt0
- Outcome
- recoverye0
- Value
- about 12 he0
- Qualifier
- at 20 °Ce0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“about 12 h at 20 °C was required for recovery.”
t0“tomato”
Claim · model-written summary
Rerooted cuttings of both species were slightly less chilling-sensitive than seedlings.
- Taxon
- tomatoSolanum lycopersicumt0
- Material
- rerooted cuttingse0
- Outcome
- sensitive to chillinge0
- Direction
- less sensitivee0
- Comparator
- seedlingse0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“For both the cultivated and wild species, rerooted cuttings were slightly less sensitive to chilling than seedlings.”
t0“tomato”
Claim · model-written summary
Cultivated tomato ammonium absorption was inhibited by 58·4 ± 2·5% after chilling.
- Taxon
- tomatoSolanum lycopersicumt0
- Material
- cultivated speciese0
- Treatment
- chillinge0
- Outcome
- relative inhibition (mean ± SE) of ammonium absorptione0
- Value
- 58·4 ± 2·5%e0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The relative inhibition (mean ± SE) of ammonium absorption before and after chilling was 58·4 ± 2·5% for the cultivated species”
t0“tomato”
Claim · model-written summary
Wild tomato ammonium absorption was inhibited by 29·0 ± 9·1% after chilling.
- Taxon
- tomatoSolanum lycopersicumt0
- Material
- wild speciese0
- Treatment
- chillingt0
- Outcome
- root ammonium influxt0
- Value
- 29·0 ± 9·1%e0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“29·0 ± 9·1% for the wild species.”
t0“chilling sensitivity of root ammonium influx in a cultivated and wild tomato”
Claim · model-written summary
The F1 hybrid showed 52·4 ± 3·6% relative inhibition of ammonium absorption.
- Taxon
- tomatoSolanum lycopersicumt0
- Material
- F 1 hybride0
- Outcome
- relative inhibitione0
- Value
- 52·4 ± 3·6%e0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The F 1 hybrid between the species showed a relative inhibition of 52·4 ± 3·6%”
t0“tomato”
Claim · model-written summary
Hybrid inhibition suggests chilling sensitivity may be dominant.
- Taxon
- tomatoSolanum lycopersicumt0
- Outcome
- chilling sensitivitye0
- Qualifier
- may be dominante0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“suggesting that chilling sensitivity may be dominant.”
t0“tomato”
Claim · model-written summary
Backcross inhibition phenotypes indicated segregation of chilling sensitivity.
- Taxon
- L. esculentumSolanum lycopersicume0
- Material
- backcross of the hybride0
- Outcome
- this trait is segregatinge0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“In a backcross of the hybrid to L. esculentum , the phenotypic distribution of the relative inhibition of ammonium absorption indicated that this trait is segregating.”
The same questions in other papers
cold · nutrient: content · Solanum lycopersicum (tomato)Positive and negative results
5 papers in the same direction as this paper · 4 in the opposite direction
- negative
- negative
- positive
6 papers more in this group
See all 10 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.