Abstract
SO2(sulfur dioxide) and PAHs(polycyclic aromatic hydrocarbons) are two typical environmental pollutants found at the same time in Shanxi industrial and mining areas.They have a great impact on the regional soil environment.In this study,seed germination,plant height,root elongation and biomass of maize in soils contaminated by SO2 and PAHs with different concentrations were studied to reveal the ecological toxicities of combined pollution.The results indicated that seed germination was slightly improved by the single pollution of SO2.Plant height,root elongation and biomass were slightly improved at lower concentrations(10-100 mg kg-1),while inhibited at higher concentrations(500-1 000 mg kg-1).The single pollution of PAHs had no significant effect on seed germination.Plant height,root elongation and biomass were also slightly improved at lower concentrations(1-10 mg kg-1),while inhibited at higher concentrations(50-100 mg kg-1).Under the combined pollution conditions,seed germination was inhibited at higher concentrations of SO2-PAHs,but no significant difference was found when compared with the control.Plant height,root elongation and total biomass of maize were slightly stimulated in case of low concentrations of SO2and low concentrations of PAHs,while they were all inhibited in case of high concentrations.It suggested that the toxicities of combined pollution of SO2 and PAHs gradually increased with increasing concentration of SO2 and PAHs.By using the stepwise regression method,it was showed that plant height or root elongation of maize seedlings was subject to the combined effect of PAHs and SO2.Meanwhile,PAHs was the main factor which affected the total biomass of maize seedlings under combined pollution conditions.
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Claims 12
Claim · model-written summary
SO2 alone slightly improved maize seed germination.
Zea maysNot reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“seed germination was slightly improved by the single pollution of SO2”
t0“Maize”
Claim · model-written summary
Low SO2 concentrations slightly improved maize height, root elongation and biomass.
- Treatment
- lower concentrations(10-100 mg kg-1)e0
- Outcome
- Plant height,root elongation and biomasse0
- Direction
- improvede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Plant height,root elongation and biomass were slightly improved at lower concentrations(10-100 mg kg-1)”
t0“Maize”
Claim · model-written summary
High SO2 concentrations inhibited maize height, root elongation and biomass.
- Treatment
- higher concentrations(500-1 000 mg kg-1)e0
- Outcome
- Plant height,root elongation and biomasse0
- Direction
- inhibitede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Plant height,root elongation and biomass were slightly improved at lower concentrations(10-100 mg kg-1),while inhibited at higher concentrations(500-1 000 mg kg-1)”
t0“Maize”
Claim · model-written summary
PAHs alone had no significant effect on maize seed germination.
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The single pollution of PAHs had no significant effect on seed germination”
t0“Maize”
Claim · model-written summary
Low PAH concentrations slightly improved maize height, root elongation and biomass.
- Treatment
- lower concentrations(1-10 mg kg-1)e0
- Outcome
- Plant height,root elongation and biomasse0
- Direction
- improvede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Plant height,root elongation and biomass were also slightly improved at lower concentrations(1-10 mg kg-1)”
t0“Maize”
Claim · model-written summary
High PAH concentrations inhibited maize height, root elongation and biomass.
- Treatment
- higher concentrations(50-100 mg kg-1)e0
- Outcome
- Plant height,root elongation and biomasse0
- Direction
- inhibitede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Plant height,root elongation and biomass were also slightly improved at lower concentrations(1-10 mg kg-1),while inhibited at higher concentrations(50-100 mg kg-1)”
t0“Maize”
Claim · model-written summary
High combined SO2 and PAH concentrations inhibited maize germination, without a significant difference from control.
- Treatment
- higher concentrations of SO2-PAHse0
- Outcome
- seed germinatione0
- Direction
- inhibitede0
- Comparator
- controle0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“seed germination was inhibited at higher concentrations of SO2-PAHs,but no significant difference was found when compared with the control”
t0“Maize”
Claim · model-written summary
Low combined concentrations stimulated maize height, root elongation and biomass.
- Treatment
- low concentrations of SO2and low concentrations of PAHse0
- Outcome
- Plant height,root elongation and total biomasse0
- Direction
- stimulatede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Plant height,root elongation and total biomass of maize were slightly stimulated in case of low concentrations of SO2and low concentrations of PAHs”
Claim · model-written summary
High combined concentrations inhibited maize height, root elongation and biomass.
- Treatment
- high concentrationse0
- Outcome
- Plant height,root elongation and total biomasse0
- Direction
- inhibitede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Plant height,root elongation and total biomass of maize were slightly stimulated in case of low concentrations of SO2and low concentrations of PAHs,while they were all inhibited in case of high concentrations”
Claim · model-written summary
Combined pollution toxicity rose with SO2 and PAH concentration.
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“toxicities of combined pollution of SO2 and PAHs gradually increased with increasing concentration of SO2 and PAHs”
t0“Maize”
Claim · model-written summary
Maize seedling height or root elongation was jointly affected by PAHs and SO2.
Not reportedDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“plant height or root elongation of maize seedlings was subject to the combined effect of PAHs and SO2”
Claim · model-written summary
PAHs was the main factor affecting maize seedling biomass under combined pollution.
Not reportedDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“PAHs was the main factor which affected the total biomass of maize seedlings under combined pollution conditions”
The same questions in other papers
polycyclic arene · growth · Zea mays (maize)Positive and negative results
1 in the opposite direction
- negative
pollution · growth · Zea mays (maize)Positive and negative results
3 papers in the same direction as this paper · 13 in the opposite direction
- negative
- no effect
- negative
13 papers more in this group
See all 17 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.