Abstract
Segregation for tolerance to ferrous iron(Fe 2+ ) was observed in a double haploid(DH) population derived from a cross between a japonica rice cv. Azuacen and an indica rice cv. IR64 in a solution culture experiment conducted. Twenty tolerant and sensitive lines, respectively selected from the population, were used to investigate the role of ascorbate specific H 2O 2 scavenging system in the detoxification of iron in plant(Fig.1). The results indicate that iron stress significantly increases the activities of ascorbate peroxidase (AP), dehydroascorbate reductase (DR) and glutathione reductase(GR)(Table 2). The activities in the tolerant lines are higher than those in the sensitive lines,and significantly negatively correlated with relative decrease in shoot dry weight (RDS)(Table 3). The results suggest that ascorbate specific H 2O 2 scavenging system may play an important role in the detoxification of iron toxicity in rice.
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Claims 5
Claim · model-written summary
Iron stress significantly increased the activities of ascorbate peroxidase, dehydroascorbate reductase and glutathione reductase in rice.
- Taxon
- Rice
Oryza sativat0 - Treatment
- iron stresse1
- Gene
- ascorbate peroxidase (AP), dehydroascorbate reductase (DR) and glutathione reductase(GR)e1
- Outcome
- activitiese1
- Direction
- increasese1
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Tolerance to Iron Toxicity in Rice”
e1“The results indicate that iron stress significantly increases the activities of ascorbate peroxidase (AP), dehydroascorbate reductase (DR) and glutathione reductase(GR)”
Claim · model-written summary
Activities of the antioxidant enzymes were higher in tolerant rice lines than in sensitive lines.
- Taxon
- RiceOryza sativat0
- Material
- tolerant linese2
- Outcome
- activitiese2
- Direction
- highere2
- Comparator
- sensitive linese2
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Tolerance to Iron Toxicity in Rice”
e2“The activities in the tolerant lines are higher than those in the sensitive lines”
Claim · model-written summary
Antioxidant enzyme activities were significantly negatively correlated with relative decrease in shoot dry weight in rice.
- Taxon
- RiceOryza sativat0
- Gene
- ascorbate peroxidase (AP), dehydroascorbate reductase (DR) and glutathione reductase(GR)e1
- Outcome
- relative decrease in shoot dry weight (RDS)e3
- Direction
- negatively correlatede3
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Tolerance to Iron Toxicity in Rice”
e1“The results indicate that iron stress significantly increases the activities of ascorbate peroxidase (AP), dehydroascorbate reductase (DR) and glutathione reductase(GR)”
e3“significantly negatively correlated with relative decrease in shoot dry weight (RDS)”
Claim · model-written summary
The ascorbate-specific H2O2 scavenging system may play an important role in detoxification of iron toxicity in rice.
- Taxon
- riceOryza sativae5
- Outcome
- detoxification of iron toxicitye5
- Qualifier
- ascorbate specific H 2O 2 scavenging systeme5
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e5“ascorbate specific H 2O 2 scavenging system may play an important role in the detoxification of iron toxicity in rice”
Claim · model-written summary
Segregation for tolerance to ferrous iron was observed in a double haploid rice population.
- Taxon
- RiceOryza sativat0
- Material
- double haploid(DH) populatione4
- Outcome
- Segregation for tolerance to ferrous irone4
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Tolerance to Iron Toxicity in Rice”
e4“Segregation for tolerance to ferrous iron(Fe 2+ ) was observed in a double haploid(DH) population”