Abstract
Hydroponics experiment was carried out to investigate the biological effects of co-contamination with bensulfuron methyl (BSM) and cadmium on rice. Two cultivars,Yue Xiangzhan and Feng Meizhan were employed as the indicator plants,0,0.1,0.2,0.4,0.6 and 1.0 mg·L-1 of BSM and 0,5,10,50 and 300 mg·L-1 of Cd were designed. The content of Cd in the root and shoot of the rice was measured with ICP. The result indicated that with increasing cadmium concentration,the biomass of the rice,the chlorophyll content and the activity of catalases (CAT) reduced,and there were significant differences between the treatments (P0.01),but the solution conductivity increased with increasing of Cd content. The tolerance of Yue Xiangzhan to cadmium was higher than that of Feng Meizhan. 0.1~0.2 mg·L-1 BSM could relieve the toxicity of Cd,but the biomass,the chlorophyll content and the CAT activity significantly decreased when BSM exceeded 0.6 mg·L-1. However,the concentration of BSM did not affect the solution conductivity significantly. The accumulation of Cd in root was about 6-fold that in shoot. When the concentrations of Cd were 50 mg·L-1 and 300 mg·L-1,applying 0.1 mg·L-1 and 0.2 mg·L-1 BSM could decrease the uptake of Cd. However,when the applied BSM was more than 0.4 mg·L-1,the accumulation of Cd in root dramatically increased,but there was no significant difference in the Cd uptake by stem,which implied that BSM inhibited the transference of Cd from root to shoot. In conclusion,although the toxicity of Cd to the rice could be relieved when 0.1~0.2 mg·L-1 BSM were applied,it would be more serious to rice when the concentration of BSM exceeded 0.6 mg·L-1 and coexisted with Cd.
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Claims 13
Claim · model-written summary
Increasing cadmium reduced rice biomass.
- Taxon
- rice
Oryza sativae0 - Treatment
- increasing cadmium concentratione0
- Outcome
- biomasse0
- Direction
- reducede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“with increasing cadmium concentration,the biomass of the rice,the chlorophyll content and the activity of catalases (CAT) reduced,and there were significant differences between the treatments (P0.01)”
Claim · model-written summary
Increasing cadmium reduced rice chlorophyll content.
- Taxon
- riceOryza sativae0
- Treatment
- increasing cadmium concentratione0
- Outcome
- chlorophyll contente0
- Direction
- reducede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“with increasing cadmium concentration,the biomass of the rice,the chlorophyll content and the activity of catalases (CAT) reduced,and there were significant differences between the treatments (P0.01)”
Claim · model-written summary
Increasing cadmium reduced rice catalase activity.
- Taxon
- riceOryza sativae0
- Treatment
- increasing cadmium concentratione0
- Outcome
- activity of catalases (CAT)e0
- Direction
- reducede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“with increasing cadmium concentration,the biomass of the rice,the chlorophyll content and the activity of catalases (CAT) reduced,and there were significant differences between the treatments (P0.01)”
Claim · model-written summary
Solution conductivity increased with cadmium content.
- Taxon
- riceOryza sativat0
- Treatment
- Cde0
- Outcome
- solution conductivitye0
- Direction
- increasede0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“the solution conductivity increased with increasing of Cd content.”
t0“Rice”
Claim · model-written summary
Yue Xiangzhan tolerated cadmium better than Feng Meizhan.
- Taxon
- RiceOryza sativat0
- Material
- Yue Xiangzhane0
- Treatment
- cadmiume0
- Outcome
- tolerancee0
- Direction
- highere0
- Comparator
- Feng Meizhane0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The tolerance of Yue Xiangzhan to cadmium was higher than that of Feng Meizhan.”
t0“Rice”
Claim · model-written summary
Low bensulfuron methyl concentrations alleviated cadmium toxicity.
- Taxon
- RiceOryza sativat0
- Treatment
- 0.1~0.2 mg·L-1 BSMe0
- Outcome
- toxicity of Cde0
- Direction
- relievee0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“0.1~0.2 mg·L-1 BSM could relieve the toxicity of Cd”
t0“Rice”
Claim · model-written summary
BSM above 0.6 mg·L-1 significantly decreased rice biomass, chlorophyll and CAT activity.
- Taxon
- RiceOryza sativat0
- Treatment
- BSM exceeded 0.6 mg·L-1e0
- Outcome
- biomass,the chlorophyll content and the CAT activitye0
- Direction
- decreasede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“the biomass,the chlorophyll content and the CAT activity significantly decreased when BSM exceeded 0.6 mg·L-1.”
t0“Rice”
Claim · model-written summary
BSM concentration did not significantly affect solution conductivity.
- Taxon
- RiceOryza sativat0
- Treatment
- concentration of BSMe0
- Outcome
- solution conductivitye0
- Direction
- did not affecte0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“the concentration of BSM did not affect the solution conductivity significantly.”
t0“Rice”
Claim · model-written summary
Rice roots accumulated about six times as much cadmium as shoots.
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The accumulation of Cd in root was about 6-fold that in shoot.”
t0“Rice”
Claim · model-written summary
At 50 or 300 mg·L-1 Cd, applying 0.1 or 0.2 mg·L-1 BSM reduced Cd uptake.
- Taxon
- RiceOryza sativat0
- Treatment
- 0.1 mg·L-1 and 0.2 mg·L-1 BSMe0
- Outcome
- uptake of Cde0
- Direction
- decreasee0
- Qualifier
- 50 mg·L-1 and 300 mg·L-1e0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“When the concentrations of Cd were 50 mg·L-1 and 300 mg·L-1,applying 0.1 mg·L-1 and 0.2 mg·L-1 BSM could decrease the uptake of Cd.”
t0“Rice”
Claim · model-written summary
BSM above 0.4 mg·L-1 dramatically increased root Cd accumulation.
- Taxon
- RiceOryza sativat0
- Treatment
- BSM was more than 0.4 mg·L-1e0
- Outcome
- accumulation of Cd in roote0
- Direction
- increasede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“when the applied BSM was more than 0.4 mg·L-1,the accumulation of Cd in root dramatically increased”
t0“Rice”
Claim · model-written summary
BSM above 0.4 mg·L-1 did not significantly change stem Cd uptake.
- Taxon
- RiceOryza sativat0
- Treatment
- BSM was more than 0.4 mg·L-1e0
- Outcome
- Cd uptake by steme0
- Direction
- no significant differencee0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“when the applied BSM was more than 0.4 mg·L-1,the accumulation of Cd in root dramatically increased,but there was no significant difference in the Cd uptake by stem”
t0“Rice”
Claim · model-written summary
The authors inferred that BSM inhibited Cd transfer from root to shoot.
- Taxon
- RiceOryza sativat0
- Treatment
- BSMe0
- Outcome
- transference of Cd from root to shoote0
- Direction
- inhibitede0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“BSM inhibited the transference of Cd from root to shoot.”
t0“Rice”
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