Abstract
Drought dramatically affects plant growth and crop yield, but previous studies primarily examined responses to drought during vegetative development. Here, to study responses to drought during reproductive development, we grew Arabidopsis thaliana plants with limited water, under conditions that allowed the plants to initiate and complete reproduction. Drought treatment from just after the onset of flowering to seed maturation caused an early arrest of floral development and sterility. After acclimation, plants showed reduced fertility that persisted throughout reproductive development. Floral defects included abnormal anther development, lower pollen viability, reduced filament elongation, ovule abortion, and failure of flowers to open. Drought also caused differential expression of 4153 genes, including flowering time genes flowering locus t, suppressor of overexpression of CO1, and leafy, genes regulating anther and pistil development, and stress-related transcription factors. Mutant phenotypes of hypersensitivity to drought and fewer differentially expressed genes suggest that dehydration response element B1A may have an important function in drought response in flowers. A more severe filament elongation defect under drought in myb21 plants demonstrated that appropriate stamen development requires MYB domain protein 21 under drought conditions. Our study reveals a regulatory cascade in reproductive responses and acclimation under drought.
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Claims 11
Claim · model-written summary
Drought from flowering onset to seed maturation caused early floral developmental arrest.
- Taxon
- Arabidopsis thaliana
Arabidopsis thalianae1 - Treatment
- Drought treatmente0
- Outcome
- early arrest of floral developmente0
Not reportedComparatorDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Drought treatment from just after the onset of flowering to seed maturation caused an early arrest of floral development and sterility.”
e1“Arabidopsis thaliana plants”
Claim · model-written summary
Drought from flowering onset to seed maturation caused sterility.
- Taxon
- Arabidopsis thalianaArabidopsis thalianae1
- Treatment
- Drought treatmente0
- Outcome
- sterilitye0
Not reportedComparatorDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Drought treatment from just after the onset of flowering to seed maturation caused an early arrest of floral development and sterility.”
e1“Arabidopsis thaliana plants”
Claim · model-written summary
After drought acclimation, fertility remained reduced throughout reproductive development.
- Taxon
- Arabidopsis thalianaArabidopsis thalianae1
- Outcome
- fertilitye0
- Direction
- reducede0
- Qualifier
- After acclimatione0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“After acclimation, plants showed reduced fertility that persisted throughout reproductive development.”
e1“Arabidopsis thaliana plants”
Claim · model-written summary
Drought produced abnormal anther development and lower pollen viability.
- Taxon
- Arabidopsis thalianaArabidopsis thalianae2
- Treatment
- Drought treatmente1
- Outcome
- abnormal anther development, lower pollen viabilitye0
Not reportedComparatorDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Floral defects included abnormal anther development, lower pollen viability, reduced filament elongation, ovule abortion, and failure of flowers to open.”
e1“Drought treatment from just after the onset of flowering”
e2“Arabidopsis thaliana plants”
Claim · model-written summary
Drought reduced filament elongation.
- Taxon
- Arabidopsis thalianaArabidopsis thalianae2
- Treatment
- Drought treatmente1
- Outcome
- filament elongatione0
- Direction
- reducede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“reduced filament elongation”
e1“Drought treatment from just after the onset of flowering”
e2“Arabidopsis thaliana plants”
Claim · model-written summary
Drought caused ovule abortion and failure of flowers to open.
- Taxon
- Arabidopsis thalianaArabidopsis thalianae2
- Treatment
- Drought treatmente1
- Outcome
- ovule abortion, and failure of flowers to opene0
Not reportedComparatorDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“ovule abortion, and failure of flowers to open”
e1“Drought treatment from just after the onset of flowering”
e2“Arabidopsis thaliana plants”
Claim · model-written summary
Drought differentially expressed 4153 genes, including flowering, reproductive and stress genes.
- Taxon
- Arabidopsis thalianaArabidopsis thalianae1
- Treatment
- Droughte0
- Outcome
- differential expressione0
- Value
- 4153 genese0
Not reportedComparatorDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Drought also caused differential expression of 4153 genes, including flowering time genes flowering locus t, suppressor of overexpression of CO1, and leafy, genes regulating anther and pistil development, and stress-related transcription factors.”
e1“Arabidopsis thaliana plants”
Claim · model-written summary
Dehydration response element B1A mutant phenotypes showed drought hypersensitivity.
- Taxon
- Arabidopsis thalianaArabidopsis thalianae1
- Gene
- dehydration response element B1Ae0
- Outcome
- hypersensitivity to droughte0
Not reportedDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Mutant phenotypes of hypersensitivity to drought and fewer differentially expressed genes suggest that dehydration response element B1A may have an important function in drought response in flowers.”
e1“Arabidopsis thaliana plants”
Claim · model-written summary
Dehydration response element B1A mutants had fewer differentially expressed genes.
- Taxon
- Arabidopsis thalianaArabidopsis thalianae1
- Gene
- dehydration response element B1Ae0
- Outcome
- differentially expressed genese0
- Direction
- fewere0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Mutant phenotypes of hypersensitivity to drought and fewer differentially expressed genes suggest that dehydration response element B1A may have an important function in drought response in flowers.”
e1“Arabidopsis thaliana plants”
Claim · model-written summary
Drought caused a more severe filament elongation defect in myb21 plants.
- Taxon
- Arabidopsis thalianaArabidopsis thalianae1
- Material
- myb21e0
- Treatment
- droughte0
- Outcome
- filament elongation defecte0
- Direction
- more severee0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“A more severe filament elongation defect under drought in myb21 plants”
e1“Arabidopsis thaliana plants”
Claim · model-written summary
The authors infer that MYB domain protein 21 is required for appropriate stamen development during drought.
- Taxon
- Arabidopsis thalianaArabidopsis thalianae1
- Gene
- MYB domain protein 21e0
- Outcome
- appropriate stamen developmente0
- Qualifier
- under drought conditionse0
Not reportedDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“appropriate stamen development requires MYB domain protein 21 under drought conditions”
e1“Arabidopsis thaliana plants”
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See all 17 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.