Abstract
Resistant and susceptible cotton cultivars when infected with Fusarium vasinfectum showed a reduced rate of photosynthesis as determined by O 2 evolution and 14 CO 2 fixation by their leaf tissues. The infected leaves exhibited a lower starch content and a slight, but consistent, reduction in total chlorophyll and chlorophyll b. There was no direct correlation between loss of chlorophyll and the low rate of photosynthesis. Chlorophyllase activity was enhanced in the infected leaves. Fusaric acid reduced the rate of photosynthesis of cotton cultivars slightly, whereas crude and dialysed culture filtrates brought about marked reduction in photosynthetic rates. The possible role of a hitherto unidentified toxin in wilt pathogenesis is suggested.
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Claims 9
Claim · model-written summary
Fusarium infection reduced photosynthesis in resistant and susceptible cotton.
- Taxon
- cotton
Gossypium hirsutume0 - Treatment
- infected with Fusarium vasinfectume0
- Interactor
- Fusarium vasinfectume0pathogen
- Outcome
- rate of photosynthesise0
- Direction
- reducede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Resistant and susceptible cotton cultivars when infected with Fusarium vasinfectum showed a reduced rate of photosynthesis as determined by O 2 evolution and 14 CO 2 fixation by their leaf tissues”
Claim · model-written summary
Infected leaves had lower starch content.
- Taxon
- cottonGossypium hirsutumt0
- Organ / stage
- leavese0
- Treatment
- infectede0
- Outcome
- starch contente0
- Direction
- lowere0
FusariumNot reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The infected leaves exhibited a lower starch content”
t0“cotton”
e1“Resistant and susceptible cotton cultivars when infected with Fusarium vasinfectum showed a reduced rate of photosynthesis as determined by O 2 evolution and 14 CO 2 fixation by their leaf tissues”
Claim · model-written summary
Infected leaves had slightly reduced total chlorophyll and chlorophyll b.
- Taxon
- cottonGossypium hirsutumt0
- Treatment
- infectede1
- Outcome
- total chlorophyll and chlorophyll be0
- Direction
- reductione0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“a slight, but consistent, reduction in total chlorophyll and chlorophyll b”
t0“cotton”
e1“Resistant and susceptible cotton cultivars when infected with Fusarium vasinfectum showed a reduced rate of photosynthesis as determined by O 2 evolution and 14 CO 2 fixation by their leaf tissues”
Claim · model-written summary
Chlorophyll loss was not directly correlated with low photosynthesis.
- Taxon
- cottonGossypium hirsutumt0
- Compound
- chlorophylle0
- Outcome
- rate of photosynthesise0
- Direction
- no direct correlatione0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“There was no direct correlation between loss of chlorophyll and the low rate of photosynthesis”
t0“cotton”
Claim · model-written summary
Chlorophyllase activity increased in infected leaves.
- Taxon
- cottonGossypium hirsutumt0
- Treatment
- infectede0
- Gene
- Chlorophyllasee0
- Outcome
- Chlorophyllase activitye0
- Direction
- enhancede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Chlorophyllase activity was enhanced in the infected leaves”
t0“cotton”
e1“Resistant and susceptible cotton cultivars when infected with Fusarium vasinfectum showed a reduced rate of photosynthesis as determined by O 2 evolution and 14 CO 2 fixation by their leaf tissues”
Claim · model-written summary
Fusaric acid slightly reduced photosynthesis.
- Taxon
- cottonGossypium hirsutume0
- Treatment
- Fusaric acide0
- Outcome
- rate of photosynthesise0
- Direction
- reducede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Fusaric acid reduced the rate of photosynthesis of cotton cultivars slightly”
Claim · model-written summary
Crude culture filtrate markedly reduced photosynthesis.
- Taxon
- cottonGossypium hirsutumt0
- Treatment
- crudee0
- Outcome
- photosynthetic ratese0
- Direction
- reductione0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“crude and dialysed culture filtrates brought about marked reduction in photosynthetic rates”
t0“cotton”
Claim · model-written summary
Dialysed culture filtrate markedly reduced photosynthesis.
- Taxon
- cottonGossypium hirsutumt0
- Treatment
- dialysed culture filtratese0
- Outcome
- photosynthetic ratese0
- Direction
- reductione0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“crude and dialysed culture filtrates brought about marked reduction in photosynthetic rates”
t0“cotton”
Claim · model-written summary
An unidentified toxin may contribute to wilt pathogenesis.
- Taxon
- cottonGossypium hirsutumt0
- Outcome
- wilt pathogenesise0
- Qualifier
- hitherto unidentified toxine0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The possible role of a hitherto unidentified toxin in wilt pathogenesis is suggested”
t0“cotton”
The same questions in other papers
infection · physiology: photosynthesis · Gossypium hirsutum (cotton)Positive and negative results
3 papers in the same direction as this paper · 2 in the opposite direction
- positive
- positive
- negative
2 papers more in this group
See all 6 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.