Abstract
Arabidopsis seedlings are highly sensitive to low oxygen and they die rapidly when exposed to anoxia. Tolerance to anoxia depends on the ability to efficiently use carbohydrates through the fermentative pathway, as highlighted by the lower tolerance displayed by a mutant devoid of alcohol dehydrogenase. Other mechanisms of tolerance are also possible and may include a role for heat-induced genes. In fact, heat shock proteins (HSPs) are induced by anoxia. This suggests that there may be a cross-adaptation mechanism between heat and anoxic stress, and in this work, we studied the acclimation of Arabidopsis seedlings both to low oxygen and heat. The results show that seedlings subjected to hypoxia or heat pretreatment survive anoxia much better. Interestingly, we also observed an increased anoxia tolerance in heat-treated alcohol dehydrogenase (adh) mutant plants. On the other hand, anoxic pretreatment does not confer tolerance to heat stress. The success of the induction of HSPs by anoxia is in direct relation to the amount of sucrose available, and this in turn relates to how well seedlings will survive under anoxia. HSP transcripts were also detected during seed development and germination, two hypoxia-prone processes, suggesting that hypoxia-induced HSP expression is physiologically relevant.
Abstract from the paper’s OpenAlex record, shown for indexing and research. Copyright remains with the authors or the publisher. 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 7
Claim · model-written summary
Hypoxia pretreatment improved seedling survival under anoxia.
- Taxon
- Arabidopsis
Arabidopsise1 - Treatment
- hypoxiae0
- Outcome
- survive anoxiae0
- Direction
- much bettere0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“seedlings subjected to hypoxia or heat pretreatment survive anoxia much better”
e1“Arabidopsis seedlings are highly sensitive”
Claim · model-written summary
Heat pretreatment improved seedling survival under anoxia.
- Taxon
- ArabidopsisArabidopsise1
- Treatment
- heat pretreatmente0
- Outcome
- survive anoxiae0
- Direction
- much bettere0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“seedlings subjected to hypoxia or heat pretreatment survive anoxia much better”
e1“Arabidopsis seedlings are highly sensitive”
Claim · model-written summary
Heat treatment increased anoxia tolerance of adh mutants.
- Taxon
- ArabidopsisArabidopsise1
- Material
- alcohol dehydrogenase (adh) mutant plantse0
- Treatment
- heat-treatede0
- Outcome
- anoxia tolerancee0
- Direction
- increasede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“increased anoxia tolerance in heat-treated alcohol dehydrogenase (adh) mutant plants”
e1“Arabidopsis seedlings are highly sensitive”
Claim · model-written summary
Anoxic pretreatment did not confer heat tolerance.
- Taxon
- ArabidopsisArabidopsise1
- Treatment
- anoxic pretreatmente0
- Outcome
- tolerance to heat stresse0
- Direction
- does not confere0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“anoxic pretreatment does not confer tolerance to heat stress”
e1“Arabidopsis seedlings are highly sensitive”
Claim · model-written summary
Anoxia induced heat shock proteins.
- Taxon
- ArabidopsisArabidopsise1
- Gene
- heat shock proteins (HSPs)e0
- Outcome
- heat shock proteins (HSPs)e0
- Direction
- inducede0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“heat shock proteins (HSPs) are induced by anoxia”
e1“Arabidopsis seedlings are highly sensitive”
Claim · model-written summary
Anoxia induction of HSPs related to sucrose availability and seedling survival.
- Taxon
- ArabidopsisArabidopsise1
- Gene
- HSPse0
- Compound
- sucrosee0
- Outcome
- success of the induction of HSPs by anoxiae0
Not reportedDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The success of the induction of HSPs by anoxia is in direct relation to the amount of sucrose available, and this in turn relates to how well seedlings will survive under anoxia”
e1“Arabidopsis seedlings are highly sensitive”
Claim · model-written summary
HSP transcripts were detected during seed development and germination.
- Taxon
- ArabidopsisArabidopsise1
- Organ / stage
- seed development and germinatione0
- Gene
- HSPe0
- Outcome
- HSP transcripts were also detectede0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“HSP transcripts were also detected during seed development and germination”
e1“Arabidopsis seedlings are highly sensitive”
The same questions in other papers
flooding · survival · ArabidopsisPositive and negative results
1 in the opposite direction
- negative
heat · survival · ArabidopsisPositive and negative results
1 paper in the same direction as this paper · 3 in the opposite direction
- negative
- negative
- negative
1 paper more in this group
See all 5 papers →flooding · disease · ArabidopsisPositive and negative results
1 paper in the same direction as this paper · 4 in the opposite direction
- no effect
- positive
- positive
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.