Abstract
A toxin that induced chlorotic haloes (typifying haloblight disease) on primary leaves ofPhaseolus vulgaris L.(var. Canadian Wonder) was partially purified fromculture filtrates ofthecausative agent Pseudomonas phaseolicola (Burkh.) Dowson. This material wasusedtoinvestigate chlorosis induction. Haloes could onlybeinduced inthose beanleaves that wereexpanding andsynthesizi chlorophyll (Chl); thetoxin, therefore, does notpromote Chibreakdown. Ch,carotene, andxanthophyll synthesis wereinhibited insections ofgreening barley (Hordeum vulgare L.)leaves, irrespective oftheirradiance level. Inparallel experiments, thetoxin decreased thelevel of5-aminolevulinic acidbyamounts sufficient to account fortoxin-inhibition ofChisynthesis. Electron microscopy revealed nodifference between thetransformation ofetioplasts into chloroplasts in toxin-treated andcontrol tissue, despite a60%reduction inChiinthe former. Theincorporation ofI14Clacetate into lipid bygreening barley leaf sections andbyisolated Pisum sativum chloroplasts inthelight andthe darkwasinhibited about 60%bythetoxin. Thedistribution ofradioactivity amongthespectra ofacyl residues wasthesameinthecontrol andtoxintreated material. Itissuggested thatthetoxin interferes withanearly process commontothesynthesis ofdifferent lipids, including Chl.
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Claims 11
Claim · model-written summary
Haloes were induced by the toxin only in bean leaves that were expanding and synthesizing chlorophyll.
- Taxon
- Phaseolus vulgaris
Phaseolus vulgarise1 - Interactor
- Pseudomonas phaseolicolae1pathogen
- Outcome
- Haloese2
- Qualifier
- those bean leaves that were expandinge2
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e1“A toxin that induced chlorotic haloes (typifying haloblight disease) on primary leaves ofPhaseolus vulgaris L.(var. Canadian Wonder) was partially purified fromculture filtrates ofthecausative agent Pseudomonas phaseolicola (Burkh.) Dowson”
e2“Haloes could onlybeinduced inthose beanleaves that wereexpanding andsynthesizi chlorophyll (Chl); thetoxin, therefore, does notpromote Chibreakdown”
Claim · model-written summary
The toxin does not promote chlorophyll breakdown.
- Taxon
- Phaseolus vulgarisPhaseolus vulgarise1
- Treatment
- toxine2
- Outcome
- breakdowne2
- Qualifier
- does not promotee2
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e1“A toxin that induced chlorotic haloes (typifying haloblight disease) on primary leaves ofPhaseolus vulgaris L.(var. Canadian Wonder) was partially purified fromculture filtrates ofthecausative agent Pseudomonas phaseolicola (Burkh.) Dowson”
e2“Haloes could onlybeinduced inthose beanleaves that wereexpanding andsynthesizi chlorophyll (Chl); thetoxin, therefore, does notpromote Chibreakdown”
Claim · model-written summary
The toxin inhibited carotene and xanthophyll synthesis in greening barley leaf sections irrespective of irradiance level.
- Taxon
- Hordeum vulgare
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Hordeum vulgaree3 - Organ / stage
- leavese3
- Treatment
- toxine1
- Outcome
- carotene, and xanthophyll synthesise3
- Direction
- inhibitede3
- Qualifier
- irrespective of the irradiance levele3
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
.jpg?width=500)
Verbatim
e1“A toxin that induced chlorotic haloes (typifying haloblight disease) on primary leaves ofPhaseolus vulgaris L.(var. Canadian Wonder) was partially purified fromculture filtrates ofthecausative agent Pseudomonas phaseolicola (Burkh.) Dowson”
e3“Ch,carotene, andxanthophyll synthesis wereinhibited insections ofgreening barley (Hordeum vulgare L.)leaves, irrespective oftheirradiance level”
Claim · model-written summary
The toxin decreased the level of 5-aminolevulinic acid in parallel experiments.
- Taxon
- Phaseolus vulgarisPhaseolus vulgarise1
- Treatment
- toxine4
- Outcome
- level of 5-aminolevulinic acide4
- Direction
- decreasede4
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e1“A toxin that induced chlorotic haloes (typifying haloblight disease) on primary leaves ofPhaseolus vulgaris L.(var. Canadian Wonder) was partially purified fromculture filtrates ofthecausative agent Pseudomonas phaseolicola (Burkh.) Dowson”
e4“Inparallel experiments, thetoxin decreased thelevel of5-aminolevulinic acidbyamounts sufficient to account fortoxin-inhibition ofChisynthesis”
Claim · model-written summary
The decrease in 5-aminolevulinic acid was sufficient to account for the toxin inhibition of chlorophyll synthesis.
- Taxon
- Phaseolus vulgarisPhaseolus vulgarise1
- Treatment
- toxine4
- Compound
- 5-aminolevulinic acide4
- Outcome
- inhibitione4
- Qualifier
- sufficient to accounte4
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e1“A toxin that induced chlorotic haloes (typifying haloblight disease) on primary leaves ofPhaseolus vulgaris L.(var. Canadian Wonder) was partially purified fromculture filtrates ofthecausative agent Pseudomonas phaseolicola (Burkh.) Dowson”
e4“Inparallel experiments, thetoxin decreased thelevel of5-aminolevulinic acidbyamounts sufficient to account fortoxin-inhibition ofChisynthesis”
Claim · model-written summary
Electron microscopy showed no difference in etioplast-to-chloroplast transformation between toxin-treated and control tissue.
- Taxon
- Phaseolus vulgarisPhaseolus vulgarise1
- Treatment
- toxin-treatede5
- Outcome
- transformation of etioplasts into chloroplastse5
- Direction
- no_changeinferrede5
- Comparator
- control tissuee5
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e1“A toxin that induced chlorotic haloes (typifying haloblight disease) on primary leaves ofPhaseolus vulgaris L.(var. Canadian Wonder) was partially purified fromculture filtrates ofthecausative agent Pseudomonas phaseolicola (Burkh.) Dowson”
e5“Electron microscopy revealed nodifference between thetransformation ofetioplasts into chloroplasts in toxin-treated andcontrol tissue, despite a60%reduction inChiinthe former”
Claim · model-written summary
The toxin reduced the Chi level by 60% in toxin-treated tissue.
- Taxon
- Phaseolus vulgarisPhaseolus vulgarise1
- Treatment
- toxin-treatede5
- Outcome
- Chie5
- Direction
- reductione5
- Value
- 60%e5
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e1“A toxin that induced chlorotic haloes (typifying haloblight disease) on primary leaves ofPhaseolus vulgaris L.(var. Canadian Wonder) was partially purified fromculture filtrates ofthecausative agent Pseudomonas phaseolicola (Burkh.) Dowson”
e5“Electron microscopy revealed nodifference between thetransformation ofetioplasts into chloroplasts in toxin-treated andcontrol tissue, despite a60%reduction inChiinthe former”
Claim · model-written summary
The toxin inhibited incorporation of 14C acetate into lipid by about 60% in greening barley leaf sections in the light and the dark.
- Taxon
- barleyHordeum vulgaree6
- Organ / stage
- leaf sectionse6
- Treatment
- toxine6
- Outcome
- incorporation of I14Clacetate into lipide6
- Direction
- inhibitede6
- Value
- about 60%e6
- Qualifier
- in the light and the darke6
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e6“Theincorporation ofI14Clacetate into lipid bygreening barley leaf sections andbyisolated Pisum sativum chloroplasts inthelight andthe darkwasinhibited about 60%bythetoxin”
Claim · model-written summary
The toxin inhibited incorporation of 14C acetate into lipid by about 60% in isolated pea chloroplasts in the light and the dark.
- Taxon
- Pisum sativum
Lathyrus oleraceuse6 - Organ / stage
- chloroplastse6
- Treatment
- toxine6
- Outcome
- incorporation of I14Clacetate into lipide6
- Direction
- inhibitede6
- Value
- about 60%e6
- Qualifier
- in the light and the darke6
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e6“Theincorporation ofI14Clacetate into lipid bygreening barley leaf sections andbyisolated Pisum sativum chloroplasts inthelight andthe darkwasinhibited about 60%bythetoxin”
Claim · model-written summary
The distribution of radioactivity among acyl residue spectra was the same in control and toxin-treated material.
- Taxon
- Phaseolus vulgarisPhaseolus vulgarise1
- Treatment
- toxine7
- Outcome
- distribution of radioactivitye7
- Direction
- no_changeinferrede7
- Qualifier
- among the spectra of acyl residuese7
- Comparator
- controle7
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e1“A toxin that induced chlorotic haloes (typifying haloblight disease) on primary leaves ofPhaseolus vulgaris L.(var. Canadian Wonder) was partially purified fromculture filtrates ofthecausative agent Pseudomonas phaseolicola (Burkh.) Dowson”
e7“Thedistribution ofradioactivity amongthespectra ofacyl residues wasthesameinthecontrol andtoxintreated material”
Claim · model-written summary
The toxin is suggested to interfere with an early process common to the synthesis of different lipids, including chlorophyll.
- Taxon
- Phaseolus vulgarisPhaseolus vulgarise1
- Treatment
- toxine7
- Outcome
- synthesis of different lipidse7
- Qualifier
- an early process common to the synthesise7
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e1“A toxin that induced chlorotic haloes (typifying haloblight disease) on primary leaves ofPhaseolus vulgaris L.(var. Canadian Wonder) was partially purified fromculture filtrates ofthecausative agent Pseudomonas phaseolicola (Burkh.) Dowson”
e7“Itissuggested thatthetoxin interferes withanearly process commontothesynthesis ofdifferent lipids, including Chl”
The same questions in other papers
pathogen product · molecular: metabolites · Hordeum vulgare (barley)Positive and negative results
2 papers in the same direction as this paper · 1 in the opposite direction
- positive
- negative
- negative
pathogen product · molecular: metabolites · Lathyrus oleraceus (pea)Results agree
1 paper in the same direction as this paper
- negative
pathogen product · molecular: metabolites · Phaseolus vulgaris (common bean)Results agree
2 papers in the same direction as this paper
- no effect
- no effect
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.