Abstract
Abstract Rice root elongation was markedly inhibited by the solution extracted from flooded soil incubated with wheat straw. The toxicity was mainly due to the ether extractable fractions under acidic conditions. The following organic acids were detected in the ether extract of the soil solution: aliphatic acids; formic, acetic, propionic, butylic, and iso-valeric acids; aromatic acids; benzoic, 2-phenylpropionic, and 3-phenylpropionic acids. In another experiment, the soil solution from the field amended with wheat straw contained 2-hydroxybenzoic acid and the aromatic acids described above. The results of a bioassay with aromatic acids for rice seedlings showed that 2-phenylpropionic and 3-phenylpropionic acids exerted a severe inhibitory effect, which reduced rice root elongation by 73.3 and 30.7%, respectively at 4×10−5M.
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Claims 6
Claim · model-written summary
Solution from flooded soil with wheat straw markedly inhibited rice root elongation.
- Taxon
- Rice
Oryza sativae0 - Treatment
- solution extracted from flooded soil incubated with wheat strawe0
- Outcome
- root elongatione0
- Direction
- inhibitede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Rice root elongation was markedly inhibited by the solution extracted from flooded soil incubated with wheat straw”
Claim · model-written summary
The acidic ether extractable fractions accounted for most toxicity.
- Taxon
- riceOryza sativat0
- Outcome
- toxicitye0
- Qualifier
- ether extractable fractions under acidic conditionse0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The toxicity was mainly due to the ether extractable fractions under acidic conditions”
t0“rice root elongation”
Claim · model-written summary
The soil solution contained identified aliphatic and aromatic acids.
- Taxon
- riceOryza sativat0
- Outcome
- organic acids were detectede0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The following organic acids were detected in the ether extract of the soil solution: aliphatic acids; formic, acetic, propionic, butylic, and iso-valeric acids; aromatic acids; benzoic, 2-phenylpropionic, and 3-phenylpropionic acids”
t0“rice root elongation”
Claim · model-written summary
Field soil solution amended with wheat straw contained 2-hydroxybenzoic acid and the stated aromatic acids.
- Taxon
- riceOryza sativat0
- Outcome
- contained 2-hydroxybenzoic acid and the aromatic acidse0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“the soil solution from the field amended with wheat straw contained 2-hydroxybenzoic acid and the aromatic acids described above”
t0“rice root elongation”
Claim · model-written summary
2-phenylpropionic acid reduced rice root elongation by 73.3% at 4×10−5M.
- Taxon
- riceOryza sativae0
- Treatment
- 2-phenylpropionice0
- Outcome
- rice root elongatione0
- Direction
- reducede0
- Value
- 73.3e0
- Qualifier
- 4×10−5Me0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“2-phenylpropionic and 3-phenylpropionic acids exerted a severe inhibitory effect, which reduced rice root elongation by 73.3 and 30.7%, respectively at 4×10−5M”
Claim · model-written summary
3-phenylpropionic acid reduced rice root elongation by 30.7% at 4×10−5M.
- Taxon
- riceOryza sativae0
- Treatment
- 3-phenylpropionic acidse0
- Outcome
- rice root elongatione0
- Direction
- reducede0
- Value
- 30.7%e0
- Qualifier
- 4×10−5Me0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“2-phenylpropionic and 3-phenylpropionic acids exerted a severe inhibitory effect, which reduced rice root elongation by 73.3 and 30.7%, respectively at 4×10−5M”
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