Abstract
To provide an insight into the mechanism of interspecific interactions mediated by allelochemicals, cucumber and figleaf gourd seedlings were compared on their response to cinnamic acid, an autotoxin from root exudates of cucumber. Reactive oxygen species metabolism and plasma membrane H(+)-ATPase activity were examined in roots upon exposure to cinnamic acid. This exposure resulted in significant increases in activities of NADPH oxidase, superoxide dismutase, guaiacol peroxidase, and catalase, as well as in O(2)(.-) production and H(2)O(2) content, in cucumber roots but not in figleaf gourd roots. Notably, the cucumber roots produced significant amount of reactive oxygen species (ROS) immediately after cinnamic acid treatment, consequently increasing membrane peroxidation, decreasing membrane H(+)-ATPase activity, and losing root viability. By contrast, no such changes were observed in figleaf gourd roots. All these results indicated that there was an interspecies difference in the recognition of allelochemicals, which induced oxidative stress accompanied by root cell death in cucumber, an autotoxic plant, but not in figleaf gourd, a cucumber relative.
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Claims 7
Claim · model-written summary
Cinnamic acid significantly increased NADPH oxidase, superoxide dismutase and guaiacol peroxidase activities in cucumber roots.
- Taxon
- cucumber
Cucumis sativuse0 - Organ / stage
- rootse0
- Treatment
- exposuree0
- Outcome
- activities of NADPH oxidase, superoxide dismutase, guaiacol peroxidasee0
- Direction
- increasese0
- Comparator
- figleaf gourd rootse0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“This exposure resulted in significant increases in activities of NADPH oxidase, superoxide dismutase, guaiacol peroxidase, and catalase, as well as in O(2)(.-) production and H(2)O(2) content, in cucumber roots but not in figleaf gourd roots.”
Claim · model-written summary
Cinnamic acid significantly increased catalase activity and reactive oxygen species production and content in cucumber roots, unlike figleaf gourd roots.
- Taxon
- cucumberCucumis sativuse0
- Organ / stage
- rootse0
- Treatment
- exposuree0
- Outcome
- catalase, as well as in O(2)(.-) production and H(2)O(2) contente0
- Direction
- increasese0
- Comparator
- figleaf gourd rootse0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“This exposure resulted in significant increases in activities of NADPH oxidase, superoxide dismutase, guaiacol peroxidase, and catalase, as well as in O(2)(.-) production and H(2)O(2) content, in cucumber roots but not in figleaf gourd roots.”
Claim · model-written summary
Cucumber roots produced a significant amount of reactive oxygen species immediately after cinnamic acid treatment.
- Taxon
- cucumberCucumis sativuse0
- Organ / stage
- rootse0
- Treatment
- cinnamic acid treatmente0
- Outcome
- reactive oxygen species (ROS)e0
- Qualifier
- immediatelye0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“the cucumber roots produced significant amount of reactive oxygen species (ROS) immediately after cinnamic acid treatment”
Claim · model-written summary
Cinnamic acid treatment increased membrane peroxidation in cucumber roots.
- Taxon
- cucumberCucumis sativuse0
- Treatment
- cinnamic acid treatmente0
- Outcome
- membrane peroxidatione0
- Direction
- increasinge0
- Comparator
- figleaf gourd rootse0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“the cucumber roots produced significant amount of reactive oxygen species (ROS) immediately after cinnamic acid treatment, consequently increasing membrane peroxidation, decreasing membrane H(+)-ATPase activity, and losing root viability. By contrast, no such changes were observed in figleaf gourd roots.”
Claim · model-written summary
Cinnamic acid treatment decreased membrane H(+)-ATPase activity in cucumber roots.
- Taxon
- cucumberCucumis sativuse0
- Treatment
- cinnamic acid treatmente0
- Outcome
- membrane H(+)-ATPase activitye0
- Direction
- decreasinge0
- Comparator
- figleaf gourd rootse0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“the cucumber roots produced significant amount of reactive oxygen species (ROS) immediately after cinnamic acid treatment, consequently increasing membrane peroxidation, decreasing membrane H(+)-ATPase activity, and losing root viability. By contrast, no such changes were observed in figleaf gourd roots.”
Claim · model-written summary
Cinnamic acid treatment caused a loss of cucumber root viability, with no such change in figleaf gourd roots.
- Taxon
- cucumberCucumis sativuse0
- Treatment
- cinnamic acid treatmente0
- Outcome
- root viabilitye0
- Direction
- losinge0
- Comparator
- figleaf gourd rootse0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“the cucumber roots produced significant amount of reactive oxygen species (ROS) immediately after cinnamic acid treatment, consequently increasing membrane peroxidation, decreasing membrane H(+)-ATPase activity, and losing root viability. By contrast, no such changes were observed in figleaf gourd roots.”
Claim · model-written summary
The authors infer that the two species differ in allelochemical recognition, with oxidative stress and root cell death induced in cucumber but not figleaf gourd.
- Taxon
- cucumberCucumis sativuse0
- Outcome
- oxidative stress accompanied by root cell deathe0
- Qualifier
- interspecies difference in the recognition of allelochemicalse0
- Comparator
- figleaf gourde0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“there was an interspecies difference in the recognition of allelochemicals, which induced oxidative stress accompanied by root cell death in cucumber, an autotoxic plant, but not in figleaf gourd”
The same questions in other papers
cinnamic acid · growth · Cucumis sativus (cucumber)Positive and negative results
8 papers in the same direction as this paper · 1 in the opposite direction
- positive
- negative
- negative
6 papers more in this group
See all 10 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.