Abstract
Metabolism and phytotoxicity of bentazon by suspension-cultured cells of soybean and velvetleaf were compared. Growth of suspension cells of both species was reduced when the cells were exposed to increasing concentrations of bentazon. However, soybean plants were tolerant and velvetleaf plants were susceptible to postemergence applications of bentazon. After incubation with 1 μM 14 C-bentazon for 6 h, soybean and velvetleaf cells in the log phase of the culture growth cycle contained similar levels of 14 C (6 nmol/g fresh weight). Of the total 14 C in the soybean cells, 57 to 92% was present as the glucosyl conjugates of 6-OH- and 8-OH-bentazon with the remainder present as bentazon; the percentage depended on the phase of the culture growth cycle. Bentazon metabolism was greatest in the stationary phase of growth. Thin, transverse sections of soybean hypocotyl metabolized bentazon to the same two metabolites as soybean suspension cells did. The ratio of 6-O-glucosyl-bentazon to 8-O-glucosyl-bentazon was always greater than 1:1 for both the hypocotyl sections and the suspension cells. Bentazon metabolites were not detected in the velvetleaf cells, the velvetleaf hypocotyl sections, or the media of either species. Soybean suspension-cultured cells appear to be a valid and advantageous system for studying the hydroxylation and glucosylation of bentazon, the primary reactions believed to be responsible for detoxication of the herbicide in tolerant plants.
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Claims 12
Claim · model-written summary
Increasing bentazon concentrations reduced suspension-cell growth in soybean.
- Taxon
- Soybean
Glycine maxt0 - Treatment
- increasing concentrations of bentazone0
- Outcome
- Growth of suspension cellse0
- Direction
- reducede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Soybean (Glycine max)”
e0“Growth of suspension cells of both species was reduced when the cells were exposed to increasing concentrations of bentazon.”
Claim · model-written summary
Increasing bentazon concentrations reduced suspension-cell growth in velvetleaf.
- Taxon
- Velvetleaf
Abutilon theophrastit0 - Treatment
- increasing concentrations of bentazone0
- Outcome
- Growth of suspension cellse0
- Direction
- reducede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Velvetleaf (Abutilon theophrasti)”
e0“Growth of suspension cells of both species was reduced when the cells were exposed to increasing concentrations of bentazon.”
Claim · model-written summary
Soybean plants were tolerant to postemergence bentazon.
- Taxon
- SoybeanGlycine maxt0
- Treatment
- postemergence applications of bentazone0
- Outcome
- tolerante0
Not reportedDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Soybean (Glycine max)”
e0“However, soybean plants were tolerant and velvetleaf plants were susceptible to postemergence applications of bentazon.”
Claim · model-written summary
Velvetleaf plants were susceptible to postemergence bentazon.
- Taxon
- VelvetleafAbutilon theophrastit0
- Treatment
- postemergence applications of bentazone0
- Outcome
- susceptiblee0
Not reportedDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Velvetleaf (Abutilon theophrasti)”
e0“However, soybean plants were tolerant and velvetleaf plants were susceptible to postemergence applications of bentazon.”
Claim · model-written summary
Log-phase cells contained about 6 nmol/g fresh weight of 14 C after bentazon incubation.
- Taxon
- SoybeanGlycine maxt0
- Organ / stage
- cells in the log phasee0
- Outcome
- levels of 14 Ce0
- Value
- 6 nmol/g fresh weighte0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Soybean (Glycine max)”
e0“soybean and velvetleaf cells in the log phase of the culture growth cycle contained similar levels of 14 C (6 nmol/g fresh weight).”
Claim · model-written summary
Log-phase cells contained about 6 nmol/g fresh weight of 14 C after bentazon incubation.
- Taxon
- VelvetleafAbutilon theophrastit0
- Organ / stage
- cells in the log phasee0
- Outcome
- levels of 14 Ce0
- Value
- 6 nmol/g fresh weighte0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Velvetleaf (Abutilon theophrasti)”
e0“soybean and velvetleaf cells in the log phase of the culture growth cycle contained similar levels of 14 C (6 nmol/g fresh weight).”
Claim · model-written summary
In soybean cells, 57 to 92% of 14 C was glucosyl conjugates of 6-OH- and 8-OH-bentazon, depending on growth phase.
- Taxon
- SoybeanGlycine maxt0
- Outcome
- glucosyl conjugates of 6-OH- and 8-OH-bentazone0
- Value
- 57 to 92%e0
- Qualifier
- the percentage depended on the phase of the culture growth cyclee0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Soybean (Glycine max)”
e0“Of the total 14 C in the soybean cells, 57 to 92% was present as the glucosyl conjugates of 6-OH- and 8-OH-bentazon with the remainder present as bentazon; the percentage depended on the phase of the culture growth cycle.”
Claim · model-written summary
Bentazon metabolism was greatest in the stationary phase.
- Taxon
- SoybeanGlycine maxt0
- Organ / stage
- stationary phase of growthe0
- Outcome
- Bentazon metabolisme0
- Direction
- greateste0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Soybean (Glycine max)”
e0“Bentazon metabolism was greatest in the stationary phase of growth.”
Claim · model-written summary
Soybean hypocotyl sections formed the same two bentazon metabolites as suspension cells.
- Taxon
- SoybeanGlycine maxt0
- Organ / stage
- soybean hypocotyle0
- Outcome
- metabolized bentazon to the same two metabolitese0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Soybean (Glycine max)”
e0“Thin, transverse sections of soybean hypocotyl metabolized bentazon to the same two metabolites as soybean suspension cells did.”
Claim · model-written summary
The 6-O to 8-O glucosyl-bentazon ratio exceeded 1:1 in hypocotyl sections and suspension cells.
- Taxon
- SoybeanGlycine maxt0
- Outcome
- ratio of 6-O-glucosyl-bentazon to 8-O-glucosyl-bentazone0
- Value
- greater than 1:1e0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Soybean (Glycine max)”
e0“The ratio of 6-O-glucosyl-bentazon to 8-O-glucosyl-bentazon was always greater than 1:1 for both the hypocotyl sections and the suspension cells.”
Claim · model-written summary
Bentazon metabolites were undetected in velvetleaf cells and hypocotyl sections.
- Taxon
- VelvetleafAbutilon theophrastit0
- Outcome
- Bentazon metabolites were not detected in the velvetleaf cells, the velvetleaf hypocotyl sectionse0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Velvetleaf (Abutilon theophrasti)”
e0“Bentazon metabolites were not detected in the velvetleaf cells, the velvetleaf hypocotyl sections, or the media of either species.”
Claim · model-written summary
Bentazon metabolites were undetected in media of either species.
- Taxon
- SoybeanGlycine maxt0
- Outcome
- Bentazon metabolites were not detectede0
- Qualifier
- media of either speciese0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Soybean (Glycine max)”
e0“Bentazon metabolites were not detected in the velvetleaf cells, the velvetleaf hypocotyl sections, or the media of either species.”
The same questions in other papers
bentazone · growth · Glycine max (soybean)Positive and negative results
3 papers in the same direction as this paper · 2 in the opposite direction
- negative
- positive
- positive
2 papers more in this group
See all 6 papers →bentazone · growth · Abutilon theophrasti (velvetleaf)Results agree
1 paper in the same direction as this paper
- negative
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.