Abstract
Young Phragmites plants were grown in two cocktails of monocarboxylic acids (C(1)-C(5)) at pH 6, where the concentration of each acid was innocuous and the total undissociated (potentially toxic) concentrations were 0.35 mmol/L and 0.42 mmol/L. Rice plants were subjected to 1.5 mmol/L acetic acid at pH 4.5 (undissociated concentration = 1.05 mmol/L). In Phragmites, each cocktail curtailed root growth especially and induced premature shoot senescence. In both species, after 3-5 d of treatment, radial oxygen loss (ROL) from apical regions of adventitious roots, and from Phragmites laterals, was reduced to very low values and associated with cell wall lignification and suberization in the surface cell layers. At later stages of treatment, rice responded to acetic acid in similar ways to Phragmites, with the development of intercellular and callus type occlusions in the gas space system, vascular blockages, and the failure of laterals to emerge. The results are relevant to the supply of oxygen from Phragmites roots to sediments for the phytopurification of waste waters, to the efflux of methane and carbon dioxide from wetlands, and to rice cultivation.
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Claims 7
Claim · model-written summary
Monocarboxylic acid cocktails curtailed root growth in Phragmites.
- Taxon
- Phragmites
Phragmitese1 - Treatment
- two cocktails of monocarboxylic acidse0
- Outcome
- root growthe1
- Direction
- curtailede1
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Young Phragmites plants were grown in two cocktails of monocarboxylic acids (C(1)-C(5)) at pH 6”
e1“In Phragmites, each cocktail curtailed root growth especially and induced premature shoot senescence”
Claim · model-written summary
Monocarboxylic acid cocktails induced premature shoot senescence in Phragmites.
- Taxon
- PhragmitesPhragmitese1
- Treatment
- two cocktails of monocarboxylic acidse0
- Outcome
- premature shoot senescencee1
- Direction
- inducede1
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Young Phragmites plants were grown in two cocktails of monocarboxylic acids (C(1)-C(5)) at pH 6”
e1“In Phragmites, each cocktail curtailed root growth especially and induced premature shoot senescence”
Claim · model-written summary
Radial oxygen loss from apical regions of rice adventitious roots was reduced to very low values.
- Taxon
- Rice
Oryza sativae3 - Treatment
- 1.5 mmol/L acetic acid at pH 4.5e3
- Outcome
- radial oxygen loss (ROL) from apical regions of adventitious rootse2
- Direction
- reducede2
- Value
- very low valuese2
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e2“In both species, after 3-5 d of treatment, radial oxygen loss (ROL) from apical regions of adventitious roots, and from Phragmites laterals, was reduced to very low values and associated with cell wall lignification and suberization in the surface cell layers”
e3“Rice plants were subjected to 1.5 mmol/L acetic acid at pH 4.5”
Claim · model-written summary
Radial oxygen loss from Phragmites laterals was reduced.
- Taxon
- PhragmitesPhragmitese2
- Treatment
- two cocktails of monocarboxylic acidse0
- Outcome
- radial oxygen loss (ROL)e2
- Direction
- reducede2
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Young Phragmites plants were grown in two cocktails of monocarboxylic acids (C(1)-C(5)) at pH 6”
e2“In both species, after 3-5 d of treatment, radial oxygen loss (ROL) from apical regions of adventitious roots, and from Phragmites laterals, was reduced to very low values and associated with cell wall lignification and suberization in the surface cell layers”
Claim · model-written summary
Reduced radial oxygen loss in Phragmites is associated with cell wall lignification and suberization in surface cell layers.
- Taxon
- PhragmitesPhragmitese2
- Outcome
- radial oxygen loss (ROL)e2
- Qualifier
- cell wall lignification and suberization in the surface cell layerse2
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e2“In both species, after 3-5 d of treatment, radial oxygen loss (ROL) from apical regions of adventitious roots, and from Phragmites laterals, was reduced to very low values and associated with cell wall lignification and suberization in the surface cell layers”
Claim · model-written summary
Reduced radial oxygen loss in rice is associated with cell wall lignification and suberization in surface cell layers.
- Taxon
- RiceOryza sativae3
- Outcome
- radial oxygen loss (ROL)e2
- Qualifier
- cell wall lignification and suberization in the surface cell layerse2
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e2“In both species, after 3-5 d of treatment, radial oxygen loss (ROL) from apical regions of adventitious roots, and from Phragmites laterals, was reduced to very low values and associated with cell wall lignification and suberization in the surface cell layers”
e3“Rice plants were subjected to 1.5 mmol/L acetic acid at pH 4.5”
Claim · model-written summary
At later stages, acetic acid caused occlusions, vascular blockages and failure of laterals to emerge in rice, similarly to Phragmites.
- Taxon
- riceOryza sativae4
- Treatment
- acetic acide4
- Outcome
- intercellular and callus type occlusions in the gas space system, vascular blockages, and the failure of laterals to emergee4
- Comparator
- Phragmitese4
Not reportedDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e4“At later stages of treatment, rice responded to acetic acid in similar ways to Phragmites, with the development of intercellular and callus type occlusions in the gas space system, vascular blockages, and the failure of laterals to emerge”
The same questions in other papers
acetic acid · growth · Oryza sativa (rice)Positive and negative results
3 papers in the same direction as this paper · 2 in the opposite direction
- no effect
- no effect
- positive
2 papers more in this group
See all 6 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.