Abstract
Abstract Crown rot (CR; Fusarium pseudograminearum ) is a serious disease in winter cereals. Soil type, temperature, nutrients, water availability and stubble‐borne inoculum levels play major roles in determining disease severity. This paper reports the impact of two different watering regimes on the disease severity and gas exchange of F . pseudograminearum infected bread wheat for the first time. Fusarium pseudograminearum inoculated and noninoculated genotypes with different susceptibility to CR were watered to either field capacity or a reduced watering regime in three controlled environment experiments. Rate of photosynthesis, stomatal conductance, internal CO 2 concentration and transpiration rate were measured using a portable photosynthesis system, together with disease severity of leaf sheaths at 28 days after planting. Significant differences in disease severity were reported between watering treatments with reduction in CR symptoms in the partially resistant genotypes in the reduced water treatment. Photosynthesis, stomatal conductance and transpiration rate were significantly decreased across most genotypes when inoculated with F . pseudograminearum . Differences in gas exchange between inoculum treatments were more evident in plants watered to field capacity. Water availability has been reported to be one of the crucial factors for initiating F . pseudograminearum infection and subsequent development of CR disease. This research demonstrates significant variation in genotype‐related responses to the complex interactions of F . pseudograminearum infection and water treatment, with a negative impact of both limited soil water availability and CR disease severity on plant gas exchange in bread wheat.
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Claims 6
Claim · model-written summary
Reduced watering reduced crown rot symptoms in partially resistant genotypes.
- Taxon
- wheat
Triticum aestivumt0 - Material
- partially resistant genotypese0
- Treatment
- reduced water treatmente0
- Interactor
- Fusarium pseudograminearumFusarium pseudograminearumt1pathogen
- Outcome
- CR symptomse0
- Direction
- reductione0
- Comparator
- field capacitye1
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“reduction in CR symptoms in the partially resistant genotypes in the reduced water treatment”
e1“watered to either field capacity or a reduced watering regime”
t0“wheat”
t1“Fusarium pseudograminearum”
Claim · model-written summary
Inoculation significantly decreased photosynthesis, stomatal conductance and transpiration rate in most genotypes.
- Taxon
- wheatTriticum aestivumt0
- Treatment
- inoculated with F . pseudograminearume0
- Interactor
- F . pseudograminearumFusarium pseudograminearume0pathogen
- Outcome
- Photosynthesis, stomatal conductance and transpiration ratee0
- Direction
- decreasede0
- Comparator
- noninoculatede1
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Photosynthesis, stomatal conductance and transpiration rate were significantly decreased across most genotypes when inoculated with F . pseudograminearum .”
e1“noninoculated genotypes”
t0“wheat”
Claim · model-written summary
Gas exchange differences between inoculum treatments were more evident at field capacity.
- Taxon
- wheatTriticum aestivumt0
- Treatment
- inoculum treatmentse0
- Interactor
- Fusarium pseudograminearumFusarium pseudograminearumt1pathogen
- Outcome
- gas exchangee0
- Direction
- more evidente0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Differences in gas exchange between inoculum treatments were more evident in plants watered to field capacity.”
t0“wheat”
t1“Fusarium pseudograminearum”
Claim · model-written summary
Genotypes varied significantly in their response to infection and watering treatment.
- Taxon
- wheatTriticum aestivumt0
- Interactor
- F . pseudograminearumFusarium pseudograminearume0pathogen
- Outcome
- genotype‐related responsese0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“significant variation in genotype‐related responses to the complex interactions of F . pseudograminearum infection and water treatment”
t0“wheat”
Claim · model-written summary
Limited soil water availability negatively affected gas exchange.
- Taxon
- bread wheatTriticum aestivume0
- Treatment
- limited soil water availabilitye0
- Outcome
- plant gas exchangee0
- Direction
- negative impacte0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“a negative impact of both limited soil water availability and CR disease severity on plant gas exchange in bread wheat”
Claim · model-written summary
Crown rot disease severity negatively affected gas exchange.
- Taxon
- bread wheatTriticum aestivume0
- Interactor
- Fusarium pseudograminearumFusarium pseudograminearumt0pathogen
- Outcome
- plant gas exchangee0
- Direction
- negative impacte0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“a negative impact of both limited soil water availability and CR disease severity on plant gas exchange in bread wheat”
t0“Fusarium pseudograminearum”
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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.