Abstract
Change in viability of border cells,activities of root cap pectin methyl esterase (PME),catalase (CAT),peroxidase (POD) and superoxide dismutase (SOD) as well as MDA content by aqueous extracts and volatile oil from Amaranthus retroflexus L.(redroot pigweed)were studied by aeroponic culture.The results showed that there was no significant effect of aqueous extracts of A.retroflexus on the growth of cucumber root,but the volatile oil significant inhibited the growth of cucumber root,and the inhibition increased with increasing concentration.The aqueous extracts first stimulated then inhibited pectin methylesterase (PME) activity,while the volatile oil stimulated PME activity.The viability of root border cells was inhibited by both aqueous extracts and volatile oil.Such inhibition was related with concentrations.With concentration increasing,MDA content and CAT activity increased,and SOD activity increased at the beginning then decreased,while POD activity was no significantly different with the control.The allelopathic effects of volatile oil from redroot pigweed were greater than aqueous extracts from this plant.
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Claims 9
Claim · model-written summary
Pigweed aqueous extract had no significant effect on cucumber root growth.
- Taxon
- cucumber
Cucumis sativuse0 - Treatment
- aqueous extracts of A.retroflexuse0
- Interactor
- A.retroflexus
Amaranthus retroflexuse0weed - Outcome
- growth of cucumber roote0
- Direction
- no significant effecte0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“there was no significant effect of aqueous extracts of A.retroflexus on the growth of cucumber root”
Claim · model-written summary
Pigweed volatile oil inhibited cucumber root growth more at higher concentrations.
- Taxon
- cucumberCucumis sativuse0
- Treatment
- volatile oile0
- Outcome
- growth of cucumber roote0
- Direction
- inhibitede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“the volatile oil significant inhibited the growth of cucumber root,and the inhibition increased with increasing concentration”
Claim · model-written summary
Aqueous extract first stimulated then inhibited PME activity.
- Treatment
- aqueous extractse0
- Outcome
- pectin methylesterase (PME) activitye0
- Direction
- first stimulated then inhibitede0
Not reportedTaxonComparator
Verbatim
e0“The aqueous extracts first stimulated then inhibited pectin methylesterase (PME) activity”
Claim · model-written summary
Volatile oil stimulated PME activity.
Not reportedTaxonComparator
Verbatim
e0“the volatile oil stimulated PME activity”
Claim · model-written summary
Aqueous extract and volatile oil inhibited root border cell viability in a concentration-related manner.
- Treatment
- aqueous extracts and volatile oile0
- Outcome
- viability of root border cellse0
- Direction
- inhibitede0
Not reportedTaxonComparator
Verbatim
e0“The viability of root border cells was inhibited by both aqueous extracts and volatile oil.Such inhibition was related with concentrations”
Claim · model-written summary
MDA content and CAT activity increased with concentration.
Not reportedTaxon
Verbatim
e0“With concentration increasing,MDA content and CAT activity increased”
Claim · model-written summary
SOD activity first increased and then decreased as concentration rose.
Not reportedTaxonTreatment
Verbatim
e0“SOD activity increased at the beginning then decreased”
Claim · model-written summary
POD activity did not differ significantly from the control.
Not reportedTaxonTreatment
Verbatim
e0“POD activity was no significantly different with the control”
Claim · model-written summary
Volatile oil had greater allelopathic effects than aqueous extracts.
- Treatment
- volatile oile0
- Interactor
- redroot pigweede0weed
- Outcome
- allelopathic effectse0
- Direction
- greatere0
- Comparator
- aqueous extractse0
Not reportedTaxon
Verbatim
e0“The allelopathic effects of volatile oil from redroot pigweed were greater than aqueous extracts from this plant”
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botanical · growth · Cucumis sativus (cucumber)Positive and negative results
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See all 111 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.