Abstract
The alteration of sugar level responsible for the development of a poplar leaf rust, caused by Melampsora larici-populina Kleb., was investigated.In diseased leaves, before visible symptoms appeared, sugar alterations occurred rapidly upon infection. Total content of sugar and sugar alcohol in the diseased leaves increased after inoculation. The amount of arabitol in rusted leaves differed remarkably and this may be attributable to the presence of mycelium in the tissue, though the possibility that arabitol occurs in the host cannot be excluded.The most interesting result was observed in the correlation between the content of sucrose and an unknown substance. The lower level of sucrose was reached at an earlier stage of infection, when the maximum concentration of the unknown substance was detected.
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Claims 4
Claim · model-written summary
Sugar alterations occurred rapidly in diseased poplar leaves before visible symptoms.
- Organ / stage
- leavese0
- Interactor
- Melampsora larici-populina Kleb.t0pathogen
- Outcome
- sugar alterationse0
- Qualifier
- before visible symptoms appearede0
PopulusOrganisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“In diseased leaves, before visible symptoms appeared, sugar alterations occurred rapidly upon infection.”
t0“poplar leaves at periodic intervals following inoculation with Melampsora larici-populina Kleb.”
Claim · model-written summary
Total sugar and sugar alcohol content increased in diseased poplar leaves after inoculation.
- Organ / stage
- leavese0
- Treatment
- inoculationt0
- Interactor
- Melampsora larici-populina Kleb.t0pathogen
- Outcome
- Total content of sugar and sugar alcohole0
- Direction
- increasede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Total content of sugar and sugar alcohol in the diseased leaves increased after inoculation.”
t0“poplar leaves at periodic intervals following inoculation with Melampsora larici-populina Kleb.”
Claim · model-written summary
Arabitol amount differed remarkably in rusted poplar leaves.
- Organ / stage
- rusted leavese0
- Interactor
- Melampsora larici-populina Kleb.t0pathogen
- Outcome
- amount of arabitole0
- Direction
- differed remarkablye0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The amount of arabitol in rusted leaves differed remarkably”
t0“poplar leaves at periodic intervals following inoculation with Melampsora larici-populina Kleb.”
Claim · model-written summary
The unknown substance reached maximum concentration when sucrose was at a lower level early in infection.
- Interactor
- Melampsora larici-populina Kleb.t0pathogen
- Compound
- sucrosee0
- Outcome
- maximum concentration of the unknown substancee0
- Direction
- maximume0
- Qualifier
- at an earlier stage of infectione0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The lower level of sucrose was reached at an earlier stage of infection, when the maximum concentration of the unknown substance was detected.”
t0“poplar leaves at periodic intervals following inoculation with Melampsora larici-populina Kleb.”
The same questions in other papers
inoculation · molecular: metabolites · Populus (poplar)Positive and negative results
1 paper in the same direction as this paper · 5 in the opposite direction
- positive
- positive
- positive
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.