Abstract
The effects of Hg2+and Cr3+ interaction on O2.-and MAD and antioxidant enzyme systems of Vallisneria spiralis L were discussed.The results showed that the function of Hg2+ and Cr3+ and combined pollution made change of O2.-and MAD content in Vallisneria spiralis L.The toxicity of combined pollution was heavier than those of single pollution.With the increasing of the concentration of Hg2+ and Cr3+,accumulation of O2.-and MAD were stimulated in lower level but decreased afterwards.The crest value of O2.-appeared earlier than MAD.The activities of SOD and POD also raised first and dropped then.The activities of CAT raised a little at first and dropped afterwards.It was concluded that antioxidant enzyme systems may be regarded as a protecting function of plants and having effect in antioxidation.
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Claims 6
Claim · model-written summary
Combined Hg2+ and Cr3+ pollution was more toxic than single pollution.
- Taxon
- Vallisneria spiralis L
Vallisneria spiralise0 - Treatment
- combined pollutione0
- Outcome
- toxicitye0
- Direction
- heaviere0
- Comparator
- single pollutione0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Vallisneria spiralis L.The toxicity of combined pollution was heavier than those of single pollution”
Claim · model-written summary
O2.- and MAD accumulated at lower metal concentrations and then decreased.
- Taxon
- Vallisneria spiralis LVallisneria spiralist0
- Treatment
- Hg2+ and Cr3+e0
- Outcome
- accumulation of O2.-and MADe0
- Direction
- stimulated in lower level but decreased afterwardse0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Vallisneria spiralis L”
e0“With the increasing of the concentration of Hg2+ and Cr3+,accumulation of O2.-and MAD were stimulated in lower level but decreased afterwards”
Claim · model-written summary
The O2.- peak occurred earlier than the MAD peak.
- Taxon
- Vallisneria spiralis LVallisneria spiralist0
- Outcome
- crest value of O2.-e0
- Direction
- earliere0
- Comparator
- MADe0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Vallisneria spiralis L”
e0“The crest value of O2.-appeared earlier than MAD”
Claim · model-written summary
SOD and POD activities first rose and then fell.
- Taxon
- Vallisneria spiralis LVallisneria spiralist0
- Treatment
- Hg2+ and Cr3+e0
- Outcome
- activities of SOD and PODe0
- Direction
- raised first and dropped thene0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Vallisneria spiralis L”
e0“With the increasing of the concentration of Hg2+ and Cr3+,accumulation of O2.-and MAD were stimulated in lower level but decreased afterwards.The crest value of O2.-appeared earlier than MAD.The activities of SOD and POD also raised first and dropped then”
Claim · model-written summary
CAT activity rose slightly at first and then fell.
- Taxon
- Vallisneria spiralis LVallisneria spiralist0
- Outcome
- activities of CATe0
- Direction
- raised a little at first and dropped afterwardse0
Not reportedTreatmentComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Vallisneria spiralis L”
e0“The activities of CAT raised a little at first and dropped afterwards”
Claim · model-written summary
The authors interpreted antioxidant enzyme systems as a protective antioxidant function.
- Taxon
- Vallisneria spiralis LVallisneria spiralist0
- Outcome
- protecting function of plantse0
- Qualifier
- antioxidant enzyme systemse0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Vallisneria spiralis L”
e0“antioxidant enzyme systems may be regarded as a protecting function of plants and having effect in antioxidation”