Abstract
When cucumber and turnip tissues were subjected to enzyme preparations of Botrytis cinerea and Bacterium aroideae in the presence of plasmolysing concentrations of various crystalloids, killing of cells was retarded out of all proportion to the slight retarding effect on maceration. When the tissue cells were recovered from plasmolysis they regained their sensitiveness to the toxic action. Toxicity of mercuric chloride and oxalic acid was also much reduced when cells were plasmolysed. Fractional precipitation with various proportions of acetone and over a wide range of pH gave preparations which varied in. activity from one treatment to another, but their macerating and toxic actions varied together. After partial maceration, plant tissues were much more sensitive to the toxic action of mercuric chloride or oxalic acid. This is interpreted as meaning that, before maceration is complete, the toxic principle has been able to reach the protoplastic surface and to exert a deleterious effect upon it. The evidence presented gives further support to the view that the enzyme system of the two pathogenic organisms which macerates the host cell walls also brings about death of the protoplasts.
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Claims 10
Claim · model-written summary
Plasmolysis retarded cucumber-cell killing by pathogen enzyme preparations much more than maceration.
- Taxon
- cucumber
Cucumis sativuse0 - Treatment
- plasmolysing concentrations of various crystalloidse0
- Interactor
- Botrytis cinerea
Botrytis cinereae0pathogen - Outcome
- killing of cellse0
- Direction
- retardede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“When cucumber and turnip tissues were subjected to enzyme preparations of Botrytis cinerea and Bacterium aroideae in the presence of plasmolysing concentrations of various crystalloids, killing of cells was retarded out of all proportion to the slight retarding effect on maceration.”
Claim · model-written summary
Plasmolysis retarded turnip-cell killing by pathogen enzyme preparations much more than maceration.
- Taxon
- turnip
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Brassica rapa subsp. rapae0 - Treatment
- plasmolysing concentrations of various crystalloidse0
- Interactor
- Bacterium aroideaee0pathogen
- Outcome
- killing of cellse0
- Direction
- retardede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
.jpg?width=500)
Verbatim
e0“When cucumber and turnip tissues were subjected to enzyme preparations of Botrytis cinerea and Bacterium aroideae in the presence of plasmolysing concentrations of various crystalloids, killing of cells was retarded out of all proportion to the slight retarding effect on maceration.”
Claim · model-written summary
Cells recovered from plasmolysis regained sensitivity to toxic action.
- Taxon
- cucumberCucumis sativuse1
- Outcome
- regained their sensitiveness to the toxic actione0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“When the tissue cells were recovered from plasmolysis they regained their sensitiveness to the toxic action.”
e1“cucumber and turnip tissues”
Claim · model-written summary
Plasmolysis greatly reduced toxicity of mercuric chloride to plant cells.
- Taxon
- cucumberCucumis sativuse1
- Treatment
- plasmolysede0
- Outcome
- Toxicity of mercuric chloridee0
- Direction
- reducede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Toxicity of mercuric chloride and oxalic acid was also much reduced when cells were plasmolysed.”
e1“cucumber and turnip tissues”
Claim · model-written summary
Plasmolysis greatly reduced toxicity of oxalic acid to plant cells.
- Taxon
- turnipBrassica rapa subsp. rapae1
- Treatment
- plasmolysede0
- Outcome
- oxalic acide0
- Direction
- reducede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Toxicity of mercuric chloride and oxalic acid was also much reduced when cells were plasmolysed.”
e1“cucumber and turnip tissues”
Claim · model-written summary
Acetone fractionation across pH produced enzyme preparations varying in activity, with macerating and toxic actions varying together.
- Taxon
- cucumberCucumis sativuse1
- Treatment
- Fractional precipitation with various proportions of acetonee0
- Outcome
- macerating and toxic actionse0
- Direction
- varied togethere0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Fractional precipitation with various proportions of acetone and over a wide range of pH gave preparations which varied in. activity from one treatment to another, but their macerating and toxic actions varied together.”
e1“cucumber and turnip tissues”
Claim · model-written summary
Partial maceration made plant tissues much more sensitive to mercuric chloride toxicity.
- Taxon
- cucumberCucumis sativuse1
- Treatment
- partial maceratione0
- Outcome
- toxic action of mercuric chloridee0
- Direction
- much more sensitivee0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“After partial maceration, plant tissues were much more sensitive to the toxic action of mercuric chloride or oxalic acid.”
e1“cucumber and turnip tissues”
Claim · model-written summary
Partial maceration made plant tissues much more sensitive to oxalic acid toxicity.
- Taxon
- turnipBrassica rapa subsp. rapae1
- Treatment
- partial maceratione0
- Outcome
- toxic action of mercuric chloride or oxalic acide0
- Direction
- much more sensitivee0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“After partial maceration, plant tissues were much more sensitive to the toxic action of mercuric chloride or oxalic acid.”
e1“cucumber and turnip tissues”
Claim · model-written summary
The authors interpret maceration as allowing a toxic principle to reach and damage the protoplastic surface before maceration is complete.
- Taxon
- cucumberCucumis sativuse1
- Outcome
- deleterious effecte0
- Qualifier
- toxic principle has been able to reach the protoplastic surfacee0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“before maceration is complete, the toxic principle has been able to reach the protoplastic surface and to exert a deleterious effect upon it.”
e1“cucumber and turnip tissues”
Claim · model-written summary
The authors support the view that pathogen enzymes that macerate host walls also kill protoplasts.
- Taxon
- cucumberCucumis sativuse1
- Outcome
- death of the protoplastse0
- Qualifier
- macerates the host cell wallse0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“the enzyme system of the two pathogenic organisms which macerates the host cell walls also brings about death of the protoplasts.”
e1“cucumber and turnip tissues”
The same questions in other papers
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3 papers in the same direction as this paper · 2 in the opposite direction
- positive
- positive
- no effect
2 papers more in this group
See all 6 papers →processing · molecular: metabolites · Cucumis sativus (cucumber)Positive and negative results
1 paper in the same direction as this paper · 10 in the opposite direction
- positive
- positive
- positive
8 papers more in this group
See all 12 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.