Abstract
ABSTRACT Nicotinamide adenine dinucleotide phosphate (NADPH) oxidases catalyze the production of superoxide, a type of reactive oxygen species (ROS). In plants, the NADPH oxidase homologs have been identified as respiratory burst oxidase homologs (Rboh). They are involved in ROS production in response to drought stress. Three entries of tall fescue ( Festuca arundinacea Schreb.) were used for analyses in the present study: tolerant (‘Isfahan’) and sensitive (‘Quchan’) accessions to drought during the germination stage, selected from 14 wild populations in Iran, as well as ‘Barvado’ as a control. Partial sequence of the Festuca respiratory burst oxidase‐D ( FrbohD ) gene was isolated from Barvado. We compared expression levels of the FrbohD gene as well as hydrogen peroxide (H 2 O 2 ) , catalase activity and some biochemical responses among the three entries. Gene expression was evaluated for leaf and shoot samples subjected to 3, 6, and 9 d without water. The transcript level of FrbohD , H 2 O 2 content, and catalase activity increased in Quchan under drought stress. It appears that lower levels of FrbohD gene transcription and H 2 O 2 concentration in F. arundinacea leaves contributed to drought stress tolerance in Isfahan. Total protein and total soluble carbohydrate content also increased significantly in Isfahan when it was subjected to drought stress. Isfahan exhibited drought resistance through various strategies, which could serve as selection criteria for improving drought resistance in turfgrass breeding programs.
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Claims 9
Claim · model-written summary
A partial FrbohD sequence was isolated from Barvado.
- Material
- Barvadoe0
- Gene
- FrbohDe0
- Outcome
- Partial sequence of the Festuca respiratory burst oxidase‐D ( FrbohD ) genee0
FestucaNot reportedCompoundOrgan / stageInteractorInteractor roleTreatmentComparatorSettingDirectionValueQualifier
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Partial sequence of the Festuca respiratory burst oxidase‐D ( FrbohD ) gene was isolated from Barvado.”
Claim · model-written summary
FrbohD transcript level increased in Quchan during drought.
- Taxon
- Festuca arundinacea
Lolium arundinaceumt0 - Material
- Quchane0
- Treatment
- drought stresse0
- Gene
- FrbohDe0
- Outcome
- transcript level of FrbohDe0
- Direction
- increasede0
Not reportedCompoundOrgan / stageInteractorInteractor roleComparatorSettingValueQualifier
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The transcript level of FrbohD , H 2 O 2 content, and catalase activity increased in Quchan under drought stress.”
t0“Festuca arundinacea”
Claim · model-written summary
Hydrogen peroxide content increased in Quchan during drought.
- Taxon
- Festuca arundinaceaLolium arundinaceumt0
- Material
- Quchane0
- Treatment
- drought stresse0
- Outcome
- H 2 O 2 contente0
- Direction
- increasede0
Not reportedGeneCompoundOrgan / stageInteractorInteractor roleComparatorSettingValueQualifier
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The transcript level of FrbohD , H 2 O 2 content, and catalase activity increased in Quchan under drought stress.”
t0“Festuca arundinacea”
Claim · model-written summary
Catalase activity increased in Quchan during drought.
- Taxon
- Festuca arundinaceaLolium arundinaceumt0
- Material
- Quchane0
- Treatment
- drought stresse0
- Gene
- catalasee0
- Outcome
- catalase activitye0
- Direction
- increasede0
Not reportedCompoundOrgan / stageInteractorInteractor roleComparatorSettingValueQualifier
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The transcript level of FrbohD , H 2 O 2 content, and catalase activity increased in Quchan under drought stress.”
t0“Festuca arundinacea”
Claim · model-written summary
Lower FrbohD transcription in Isfahan appeared to contribute to drought tolerance.
- Taxon
- F. arundinaceaLolium arundinaceume0
- Material
- Isfahane0
- Gene
- FrbohDe0
- Outcome
- drought stress tolerancee0
Not reportedCompoundOrgan / stageInteractorInteractor roleTreatmentComparatorSettingDirectionValueQualifier
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“It appears that lower levels of FrbohD gene transcription and H 2 O 2 concentration in F. arundinacea leaves contributed to drought stress tolerance in Isfahan.”
Claim · model-written summary
Lower hydrogen peroxide concentration in Isfahan appeared to contribute to drought tolerance.
- Taxon
- F. arundinaceaLolium arundinaceume0
- Material
- Isfahane0
- Compound
- H 2 O 2e0
- Outcome
- drought stress tolerancee0
Not reportedGeneOrgan / stageInteractorInteractor roleTreatmentComparatorSettingDirectionValueQualifier
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“It appears that lower levels of FrbohD gene transcription and H 2 O 2 concentration in F. arundinacea leaves contributed to drought stress tolerance in Isfahan.”
Claim · model-written summary
Total protein and soluble carbohydrate content increased significantly in Isfahan under drought.
- Taxon
- Festuca arundinaceaLolium arundinaceumt0
- Material
- Isfahane0
- Treatment
- drought stresse0
- Outcome
- Total protein and total soluble carbohydrate contente0
- Direction
- increasede0
Not reportedGeneCompoundOrgan / stageInteractorInteractor roleComparatorSettingValueQualifier
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Total protein and total soluble carbohydrate content also increased significantly in Isfahan when it was subjected to drought stress.”
t0“Festuca arundinacea”
Claim · model-written summary
Isfahan exhibited drought resistance through multiple strategies.
- Taxon
- Festuca arundinaceaLolium arundinaceumt0
- Material
- Isfahane0
- Outcome
- drought resistancee0
Not reportedGeneCompoundOrgan / stageInteractorInteractor roleTreatmentComparatorSettingDirectionValueQualifier
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Isfahan exhibited drought resistance through various strategies, which could serve as selection criteria for improving drought resistance in turfgrass breeding programs.”
t0“Festuca arundinacea”
Claim · model-written summary
The authors propose Isfahan drought resistance strategies as selection criteria.
- Taxon
- Festuca arundinaceaLolium arundinaceumt0
- Material
- Isfahane0
- Outcome
- selection criteria for improving drought resistancee0
Not reportedGeneCompoundOrgan / stageInteractorInteractor roleTreatmentComparatorSettingDirectionValueQualifier
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Isfahan exhibited drought resistance through various strategies, which could serve as selection criteria for improving drought resistance in turfgrass breeding programs.”
t0“Festuca arundinacea”
The same questions in other papers
drought · molecular: expression · Lolium arundinaceum (tall fescue)Positive and negative results
3 papers in the same direction as this paper · 3 in the opposite direction
- positive
- positive
- positive
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See all 7 papers →drought · physiology: oxidative · Lolium arundinaceum (tall fescue)Positive and negative results
5 papers in the same direction as this paper · 1 in the opposite direction
- positive
- negative
- no effect
3 papers more in this group
See all 7 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.