Abstract
High temperature (HT) and water deficit (WD) are frequent environmental constraints restricting plant growth and productivity. These stresses often occur simultaneously in the field, but little is known about their combined impacts on plant growth, development and physiology. We evaluated the responses of 10 Arabidopsis thaliana natural accessions to prolonged elevated air temperature (30 °C) and soil WD applied separately or in combination. Plant growth was significantly reduced under both stresses and their combination was even more detrimental to plant performance. The effects of the two stresses were globally additive, but some traits responded specifically to one but not the other stress. Root allocation increased in response to WD, while reproductive allocation, hyponasty and specific leaf area increased under HT. All the traits that varied in response to combined stresses also responded to at least one of them. Tolerance to WD was higher in small-sized accessions under control temperature and HT and in accessions with high biomass allocation to root under control conditions. Accessions that originate from sites with higher temperature have less stomatal density and allocate less biomass to the roots when cultivated under HT. Independence and interaction between stresses as well as the relationships between traits and stress responses are discussed.
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 11
Claim · model-written summary
Heat reduced plant growth.
- Taxon
- Arabidopsis
Arabidopsist0 - Treatment
- high temperaturet0
- Outcome
- Plant growthe0
- Direction
- reducede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Plant growth was significantly reduced under both stresses”
t0“Arabidopsis growth under prolonged high temperature and water deficit”
Claim · model-written summary
Water deficit reduced plant growth.
- Taxon
- ArabidopsisArabidopsist0
- Treatment
- water deficitt0
- Outcome
- Plant growthe0
- Direction
- reducede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Plant growth was significantly reduced under both stresses”
t0“Arabidopsis growth under prolonged high temperature and water deficit”
Claim · model-written summary
The combined stresses were more detrimental to plant performance.
- Taxon
- ArabidopsisArabidopsist0
- Treatment
- their combinatione0
- Outcome
- plant performancee0
- Direction
- more detrimentale0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“their combination was even more detrimental to plant performance”
t0“Arabidopsis”
Claim · model-written summary
The two stress effects were generally additive.
- Taxon
- ArabidopsisArabidopsist0
- Outcome
- globally additivee0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The effects of the two stresses were globally additive”
t0“Arabidopsis”
Claim · model-written summary
Water deficit increased root allocation.
- Taxon
- ArabidopsisArabidopsist0
- Treatment
- WDe0
- Outcome
- Root allocatione0
- Direction
- increasede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Root allocation increased in response to WD”
t0“Arabidopsis”
Claim · model-written summary
Heat increased reproductive allocation, hyponasty and specific leaf area.
- Taxon
- ArabidopsisArabidopsist0
- Treatment
- HTe0
- Outcome
- reproductive allocation, hyponasty and specific leaf areae0
- Direction
- increasede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“reproductive allocation, hyponasty and specific leaf area increased under HT”
t0“Arabidopsis”
Claim · model-written summary
All traits altered by combined stress also responded to at least one individual stress.
- Taxon
- ArabidopsisArabidopsist0
- Outcome
- responded to at least one of theme0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“All the traits that varied in response to combined stresses also responded to at least one of them”
t0“Arabidopsis”
Claim · model-written summary
Smaller accessions had higher water deficit tolerance.
- Taxon
- ArabidopsisArabidopsist0
- Material
- small-sized accessionse0
- Outcome
- Tolerance to WDe0
- Direction
- highere0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Tolerance to WD was higher in small-sized accessions under control temperature and HT”
t0“Arabidopsis”
Claim · model-written summary
Accessions with greater control root allocation had higher water deficit tolerance.
- Taxon
- ArabidopsisArabidopsist0
- Material
- accessions with high biomass allocation to roote0
- Outcome
- Tolerance to WDe0
- Direction
- highere0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Tolerance to WD was higher in small-sized accessions under control temperature and HT and in accessions with high biomass allocation to root under control conditions”
t0“Arabidopsis”
Claim · model-written summary
Accessions from warmer sites had lower stomatal density under heat.
- Taxon
- ArabidopsisArabidopsist0
- Material
- Accessions that originate from sites with higher temperaturee0
- Outcome
- stomatal densitye0
- Direction
- lesse0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Accessions that originate from sites with higher temperature have less stomatal density and allocate less biomass to the roots when cultivated under HT”
t0“Arabidopsis”
Claim · model-written summary
Accessions from warmer sites allocated less biomass to roots under heat.
- Taxon
- ArabidopsisArabidopsist0
- Material
- Accessions that originate from sites with higher temperaturee0
- Outcome
- biomass to the rootse0
- Direction
- lesse0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Accessions that originate from sites with higher temperature have less stomatal density and allocate less biomass to the roots when cultivated under HT”
t0“Arabidopsis”
The same questions in other papers
heat · growth · ArabidopsisPositive and negative results
8 papers in the same direction as this paper · 2 in the opposite direction
- positive
- positive
- negative
7 papers more in this group
See all 11 papers →drought · growth · ArabidopsisPositive and negative results
9 papers in the same direction as this paper · 2 in the opposite direction
- positive
- positive
- negative
8 papers more in this group
See all 12 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.