Paper · 2001 · Agro-environmental Protection

Effect of Herbicide Mefenacet on Response of Active Oxygen Scavenging System in Rice Plant

Cheng Zhang

8
claims
17
verbatim quotes
6
citations
1
research areas
—
Not open access

Abstract

Effects of mefenacet on response of active oxygen scavenging system in rice plant were studied. The results showed that mefenacet could cause shorten of height and root length of the plant. Contents of protein, chlorophyll and GSH were increased with the concentration of mefenacet. The contents of active oxygen, lipid oxidation products MDA and autooxidation rate were also enhanced, revealing that balance of active oxygen in the body of rice plant had been disturbed. The activities of antioxidant enzymes were induced by stress of the herbicide. CAT in leaves was sensitive to change of mefenacet, but SOD and POD in roots were more sensitive. SOD showed good relativity with the contents of MDA, which indicated that the process of scavenging active oxygen dropped behind the process of lipid oxidation induction.

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Claims 8

Intervention effectobservedoriginal resultnegativemeasured

Claim · model-written summary

Mefenacet shortened plant height and root length.

Taxon
rice plantOryza sativat0
Treatment
mefenacete0
Outcome
height and root lengthe0
Direction
shortene0

Not reportedComparator

Organisms pictured · Representative pictures of the matched species, not figures from the paper.

Oryza sativa
Oryza sativa · Taxon · picture from its Wikimedia Commons categoryDesmanthus4food · CC BY-SA 3.0 us · Wikimedia Commons ↗

Verbatim

e0

“mefenacet could cause shorten of height and root length of the plant”

✓ located verbatim in the source · abstract, characters 120–188 · show in text ↑
t0

“rice plant”

✓ located after whitespace/quote normalisation · title, characters 80–90 · show in text ↑
Associationobservedoriginal resultmeasured

Claim · model-written summary

Protein, chlorophyll and GSH contents increased with mefenacet concentration.

Taxon
rice plantOryza sativat0
Treatment
concentration of mefenacete0
Outcome
Contents of protein, chlorophyll and GSHe0
Direction
increasede0

Organisms pictured · Representative pictures of the matched species, not figures from the paper.

Oryza sativa
Oryza sativa · Taxon · picture from its Wikimedia Commons categoryDesmanthus4food · CC BY-SA 3.0 us · Wikimedia Commons ↗

Verbatim

e0

“Contents of protein, chlorophyll and GSH were increased with the concentration of mefenacet.”

✓ located verbatim in the source · abstract, characters 190–282 · show in text ↑
t0

“rice plant”

✓ located after whitespace/quote normalisation · title, characters 80–90 · show in text ↑
Intervention effectobservedoriginal resultnegativemeasured

Claim · model-written summary

Active oxygen, MDA and autooxidation rate increased under mefenacet.

Taxon
rice plantOryza sativat0
Treatment
mefenacett1
Outcome
contents of active oxygen, lipid oxidation products MDA and autooxidation ratee0
Direction
enhancede0

Not reportedComparator

Organisms pictured · Representative pictures of the matched species, not figures from the paper.

Oryza sativa
Oryza sativa · Taxon · picture from its Wikimedia Commons categoryDesmanthus4food · CC BY-SA 3.0 us · Wikimedia Commons ↗

Verbatim

e0

“The contents of active oxygen, lipid oxidation products MDA and autooxidation rate were also enhanced”

✓ located verbatim in the source · abstract, characters 283–384 · show in text ↑
t0

“rice plant”

✓ located after whitespace/quote normalisation · title, characters 80–90 · show in text ↑
t1

“mefenacet”

✓ located after whitespace/quote normalisation · title, characters 20–29 · show in text ↑
Intervention effectobservedoriginal resultmeasured

Claim · model-written summary

Herbicide stress induced antioxidant enzyme activity.

Taxon
rice plantOryza sativat0
Treatment
herbicidee0
Outcome
activities of antioxidant enzymese0
Direction
inducede0

Not reportedComparator

Organisms pictured · Representative pictures of the matched species, not figures from the paper.

Oryza sativa
Oryza sativa · Taxon · picture from its Wikimedia Commons categoryDesmanthus4food · CC BY-SA 3.0 us · Wikimedia Commons ↗

Verbatim

e0

“The activities of antioxidant enzymes were induced by stress of the herbicide.”

✓ located verbatim in the source · abstract, characters 472–550 · show in text ↑
t0

“rice plant”

✓ located after whitespace/quote normalisation · title, characters 80–90 · show in text ↑
Associationobservedoriginal resultmeasured

Claim · model-written summary

Leaf CAT was sensitive to mefenacet changes.

Taxon
rice plantOryza sativat0
Organ / stage
leavese0
Treatment
mefenacete0
Gene
CATe0
Outcome
sensitivee0

Not reportedDirection

Organisms pictured · Representative pictures of the matched species, not figures from the paper.

Oryza sativa
Oryza sativa · Taxon · picture from its Wikimedia Commons categoryDesmanthus4food · CC BY-SA 3.0 us · Wikimedia Commons ↗

Verbatim

e0

“CAT in leaves was sensitive to change of mefenacet”

✓ located verbatim in the source · abstract, characters 551–601 · show in text ↑
t0

“rice plant”

✓ located after whitespace/quote normalisation · title, characters 80–90 · show in text ↑
Observationobservedoriginal resultmeasured

Claim · model-written summary

Root SOD and POD were more sensitive to mefenacet than leaf CAT.

Taxon
rice plantOryza sativat0
Organ / stage
rootse0
Gene
SOD and PODe0
Outcome
more sensitivee0
Comparator
CAT in leavese0

Organisms pictured · Representative pictures of the matched species, not figures from the paper.

Oryza sativa
Oryza sativa · Taxon · picture from its Wikimedia Commons categoryDesmanthus4food · CC BY-SA 3.0 us · Wikimedia Commons ↗

Verbatim

e0

“CAT in leaves was sensitive to change of mefenacet, but SOD and POD in roots were more sensitive.”

✓ located verbatim in the source · abstract, characters 551–648 · show in text ↑
t0

“rice plant”

✓ located after whitespace/quote normalisation · title, characters 80–90 · show in text ↑
Associationobservedoriginal resultmeasured

Claim · model-written summary

SOD correlated with MDA content.

Taxon
rice plantOryza sativat0
Gene
SODe0
Outcome
good relativity with the contents of MDAe0

Not reportedDirection

Organisms pictured · Representative pictures of the matched species, not figures from the paper.

Oryza sativa
Oryza sativa · Taxon · picture from its Wikimedia Commons categoryDesmanthus4food · CC BY-SA 3.0 us · Wikimedia Commons ↗

Verbatim

e0

“SOD showed good relativity with the contents of MDA”

✓ located verbatim in the source · abstract, characters 649–700 · show in text ↑
t0

“rice plant”

✓ located after whitespace/quote normalisation · title, characters 80–90 · show in text ↑
Mechanismauthor interpretationoriginal resultmeasured

Claim · model-written summary

Authors inferred active oxygen scavenging lagged lipid oxidation induction.

Taxon
rice plantOryza sativat0
Outcome
scavenging active oxygen dropped behind the process of lipid oxidation inductione0
Qualifier
process of lipid oxidation inductione0

Organisms pictured · Representative pictures of the matched species, not figures from the paper.

Oryza sativa
Oryza sativa · Taxon · picture from its Wikimedia Commons categoryDesmanthus4food · CC BY-SA 3.0 us · Wikimedia Commons ↗

Verbatim

e0

“the process of scavenging active oxygen dropped behind the process of lipid oxidation induction”

✓ located verbatim in the source · abstract, characters 723–818 · show in text ↑
t0

“rice plant”

✓ located after whitespace/quote normalisation · title, characters 80–90 · show in text ↑

mefenacet · growth · Oryza sativa (rice)Positive and negative results

2 papers: 1 positive, 1 negative or no effect

1 in the opposite direction

  1. positive
See all 2 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.