Abstract
ABSTRACT Albugo candida (pers.) O. Kuntze (white blister rust) is a biotrophic fungus which infects cruciferous plants including Arabidopsis thaliana (L) Heynh. We report the effect of this pathogen on the photosynthetic and carbohydrate metabolism of A. thaliana. As infection progressed A. Candida caused a reduction in the rate of photosynthesis when measured at either ambient or saturating concentrations of CO 2 . These data suggested that both chlorophyll and Rubisco were lost from regions of infected leaves, and measurements of chlorophyll, Rubisco content and activity supported these observations. The reduction in the rate of photosynthesis was not caused by closure of stomata as transpiration was unaffected by the disease. Infected leaves accumulated both soluble carbohydrates and starch. The activities of sucrose‐phosphate synthase, sucrose synthase and ADP glucose pyrophosphorylase did not change in response to infection. However, the activities of both the wall‐bound and soluble acid invertases were higher in infected leaves than in controls; a new soluble invertase isoform with a pl of 5‐1 appeared in infected leaves. The possible origin of the increase in wall‐bound and soluble invertase activities and its effect on the carbohydrate and photosynthetic metabolism of the leaf are discussed.
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Claims 7
Claim · model-written summary
Albugo candida infection reduced the rate of photosynthesis of Arabidopsis thaliana leaves at ambient and saturating CO2.
- Taxon
- Arabidopsis thaliana
Arabidopsis thalianat0 - Treatment
- infectione1
- Interactor
- A. Candidae1pathogen
- Outcome
- rate of photosynthesise1
- Direction
- reductione1
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“The effect of Albugo Candida (white blister rust) on the photosynthetic and carbohydrate metabolism of leaves of Arabidopsis thaliana”
e1“As infection progressed A. Candida caused a reduction in the rate of photosynthesis when measured at either ambient or saturating concentrations of CO 2”
Claim · model-written summary
Chlorophyll and Rubisco were suggested to be lost from infected leaf regions of Arabidopsis thaliana.
- Taxon
- Arabidopsis thalianaArabidopsis thalianat0
- Treatment
- infected leavese2
- Outcome
- chlorophyll and Rubiscoe2
- Direction
- loste2
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“The effect of Albugo Candida (white blister rust) on the photosynthetic and carbohydrate metabolism of leaves of Arabidopsis thaliana”
e2“These data suggested that both chlorophyll and Rubisco were lost from regions of infected leaves”
Claim · model-written summary
Transpiration of Arabidopsis thaliana was unaffected by the disease, so stomatal closure did not cause the photosynthesis reduction.
- Taxon
- Arabidopsis thalianaArabidopsis thalianat0
- Treatment
- the diseasee3
- Outcome
- transpiratione3
- Direction
- unaffectede3
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“The effect of Albugo Candida (white blister rust) on the photosynthetic and carbohydrate metabolism of leaves of Arabidopsis thaliana”
e3“The reduction in the rate of photosynthesis was not caused by closure of stomata as transpiration was unaffected by the disease”
Claim · model-written summary
Infected Arabidopsis thaliana leaves accumulated soluble carbohydrates and starch.
- Taxon
- Arabidopsis thalianaArabidopsis thalianat0
- Treatment
- Infected leavese4
- Outcome
- soluble carbohydrates and starche4
- Direction
- accumulatede4
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“The effect of Albugo Candida (white blister rust) on the photosynthetic and carbohydrate metabolism of leaves of Arabidopsis thaliana”
e4“Infected leaves accumulated both soluble carbohydrates and starch”
Claim · model-written summary
Infection did not change the activities of sucrose-phosphate synthase, sucrose synthase and ADP glucose pyrophosphorylase in Arabidopsis thaliana.
- Taxon
- Arabidopsis thalianaArabidopsis thalianat0
- Treatment
- infectione5
- Outcome
- activities of sucrose‐phosphate synthase, sucrose synthase and ADP glucose pyrophosphorylasee5
- Direction
- no_changeinferrede5
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“The effect of Albugo Candida (white blister rust) on the photosynthetic and carbohydrate metabolism of leaves of Arabidopsis thaliana”
e5“The activities of sucrose‐phosphate synthase, sucrose synthase and ADP glucose pyrophosphorylase did not change in response to infection”
Claim · model-written summary
Wall-bound and soluble acid invertase activities were higher in infected leaves than in controls.
- Taxon
- Arabidopsis thalianaArabidopsis thalianat0
- Treatment
- infected leavese6
- Outcome
- activities of both the wall‐bound and soluble acid invertasese6
- Direction
- highere6
- Comparator
- controlse6
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“The effect of Albugo Candida (white blister rust) on the photosynthetic and carbohydrate metabolism of leaves of Arabidopsis thaliana”
e6“the activities of both the wall‐bound and soluble acid invertases were higher in infected leaves than in controls”
Claim · model-written summary
A new soluble invertase isoform appeared in infected Arabidopsis thaliana leaves.
- Taxon
- Arabidopsis thalianaArabidopsis thalianat0
- Treatment
- infected leavese7
- Outcome
- a new soluble invertase isoforme7
- Value
- pl of 5‐1e7
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“The effect of Albugo Candida (white blister rust) on the photosynthetic and carbohydrate metabolism of leaves of Arabidopsis thaliana”
e7“a new soluble invertase isoform with a pl of 5‐1 appeared in infected leaves”
The same questions in other papers
infection · physiology: photosynthesis · Arabidopsis thaliana (thale cress)Positive and negative results
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- positive
- negative
- negative
infection · molecular: metabolites · Arabidopsis thaliana (thale cress)Positive and negative results
5 papers in the same direction as this paper · 7 in the opposite direction
- positive
- positive
- positive
9 papers more in this group
See all 13 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.