Abstract
Potato is a globally important, highly heat-susceptible crop species. We investigated the effects of prolonged exposure to elevated temperatures and exogenous salicylic acid (SA) on microplant growth and heat-shock response (HSR) in three unrelated potato genotypes/cultivars. Long-term exposure to 29 °C (mild heat stress) caused a significant reduction in the number of surviving explants and shoot morphometric parameters in heat-sensitive genotypes, while exposure to 26 °C (warming) caused only a decline in shoot growth. Interestingly, 26 °C-temperature treatment stimulated root growth in some investigated genotypes, indicating a difference between favorable temperatures for potato shoot and root growth. SA showed a protective effect regarding potato shoot growth at 26 °C. At 29 °C, this effect was genotype-dependent. SA did not affect the number of roots and inhibited root elongation at all temperature treatments, indicating the difference between shoot and root responses to applied SA concentration. Although HSR is mainly considered rapid and short-lived, elevated transcript levels of most investigated HSFs and HSPs were detected after three weeks of heat stress. Besides, two StHSFs and StHSP21 showed elevated expression at 26 °C, indicating extreme potato heat-susceptibility and significance of HSR during prolonged warming. SA effects on HSFs and HSPs expression were minor and alterable.
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Claims 11
Claim · model-written summary
Long exposure to 29 °C reduced explant survival and shoot morphometric parameters in heat-sensitive potato genotypes.
- Taxon
- Potato
Solanum tuberosumt0 - Material
- heat-sensitive genotypese0
- Treatment
- 29 °Ce0
- Outcome
- number of surviving explants and shoot morphometric parameterse0
- Direction
- reductione0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Long-term exposure to 29 °C (mild heat stress) caused a significant reduction in the number of surviving explants and shoot morphometric parameters in heat-sensitive genotypes”
t0“Potato Microplants”
Claim · model-written summary
Exposure to 26 °C reduced shoot growth.
- Taxon
- PotatoSolanum tuberosumt0
- Treatment
- 26 °Ce0
- Outcome
- shoot growthe0
- Direction
- declinee0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“exposure to 26 °C (warming) caused only a decline in shoot growth”
t0“Potato Microplants”
Claim · model-written summary
The 26 °C treatment stimulated root growth in some genotypes.
- Taxon
- PotatoSolanum tuberosumt0
- Treatment
- 26 °C-temperature treatmente0
- Outcome
- root growthe0
- Direction
- stimulatede0
- Qualifier
- some investigated genotypese0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“26 °C-temperature treatment stimulated root growth in some investigated genotypes”
t0“Potato Microplants”
Claim · model-written summary
Salicylic acid protected potato shoot growth at 26 °C.
- Taxon
- potatoSolanum tuberosume0
- Treatment
- exogenous salicylic acide1
- Outcome
- shoot growthe0
- Direction
- protectivee0
- Qualifier
- 26 °Ce0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“SA showed a protective effect regarding potato shoot growth at 26 °C”
e1“exogenous salicylic acid (SA)”
Claim · model-written summary
At 29 °C the salicylic acid shoot response depended on genotype.
- Taxon
- PotatoSolanum tuberosumt0
- Treatment
- SAe1
- Outcome
- shoot growthe1
- Qualifier
- genotype-dependente0
Not reportedDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“At 29 °C, this effect was genotype-dependent”
e1“SA showed a protective effect regarding potato shoot growth at 26 °C”
t0“Potato Microplants”
Claim · model-written summary
Salicylic acid did not affect root number.
- Taxon
- PotatoSolanum tuberosumt0
- Treatment
- SAe0
- Outcome
- number of rootse0
- Direction
- did not affecte0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“SA did not affect the number of roots”
t0“Potato Microplants”
Claim · model-written summary
Salicylic acid inhibited root elongation at all temperature treatments.
- Taxon
- PotatoSolanum tuberosumt0
- Treatment
- SAe0
- Outcome
- root elongatione0
- Direction
- inhibitede0
- Qualifier
- all temperature treatmentse0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“SA did not affect the number of roots and inhibited root elongation at all temperature treatments”
t0“Potato Microplants”
Claim · model-written summary
Most investigated heat shock factors and proteins had elevated transcripts after three weeks of heat stress.
- Taxon
- PotatoSolanum tuberosumt0
- Treatment
- heat stresse0
- Gene
- HSFs and HSPse0
- Outcome
- transcript levelse0
- Direction
- elevatede0
- Qualifier
- after three weekse0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“elevated transcript levels of most investigated HSFs and HSPs were detected after three weeks of heat stress”
t0“Potato Microplants”
Claim · model-written summary
Two StHSFs showed elevated expression at 26 °C.
- Taxon
- PotatoSolanum tuberosumt0
- Treatment
- 26 °Ce0
- Gene
- StHSFse0
- Outcome
- expressione0
- Direction
- elevatede0
- Value
- twoe0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“two StHSFs and StHSP21 showed elevated expression at 26 °C”
t0“Potato Microplants”
Claim · model-written summary
StHSP21 showed elevated expression at 26 °C.
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“StHSP21 showed elevated expression at 26 °C”
t0“Potato Microplants”
Claim · model-written summary
Salicylic acid had minor and variable effects on heat shock factor and protein expression.
- Taxon
- PotatoSolanum tuberosumt0
- Treatment
- SAe0
- Outcome
- HSFs and HSPs expressione0
- Qualifier
- minor and alterablee0
Not reportedComparatorDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“SA effects on HSFs and HSPs expression were minor and alterable”
t0“Potato Microplants”
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See all 16 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.