Abstract
Enzymatically isolated mesophyll cells of peanut (Archis hypogeae L.) and callus-derived cell suspensions of peanut and soybean (Glycine max (L.) Merrill) were assessed for their usefulness in studies of the toxicity and (or) mode of action of two bipyridilium herbicides (diquat and paraquat) and of perfluidone. Isolated mesophyll cells were very useful for rapid analyses of photosynthetic inhibition by 1 or 10 μM concentrations of the bipyridiliums. Cells treated with perfluidone were not affected. The growth of nonphotosynthetic callus-derived peanut cell suspensions was inhibited strongly either in the light or in the dark at 1 and 10 μM concentrations of either bipyridilium compound. Growth was slowed in cells treated with 0.1 μM diquat but not paraquat. In contrast, callus-derived soybean cell suspensions grew well in 1 μM diquat or paraquat; 10 μM of either herbicide strongly inhibited growth.Ultrastructural analyses of isolated mesophyll cells were of limited usefulness in assessing herbicide toxicity and mode of action because both untreated and treated enzymatically isolated peanut mesophyll cells had damaged membranes with extensive lipid deposits. In contrast, callus-derived soybean cell suspensions of both treated and untreated cells were undamaged for up to 6 days so that reduced growth of the cultures was not caused by destruction of organelles.
Abstract from the paper’s OpenAlex record, shown for indexing and research. Copyright remains with the authors or the publisher. Read at the source ↗
The text the model read, with the source record’s inline markup (italics, sub- and superscripts) rendered and its character entities decoded; quote offsets refer to the raw text.
Claims 11
Claim · model-written summary
Isolated peanut mesophyll cells enabled rapid analysis of photosynthetic inhibition by bipyridiliums.
- Taxon
- peanut
Arachis hypogaeae1 - Outcome
- rapid analyses of photosynthetic inhibitione0
- Value
- 1 or 10 μMe0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Isolated mesophyll cells were very useful for rapid analyses of photosynthetic inhibition by 1 or 10 μM concentrations of the bipyridiliums”
e1“mesophyll cells of peanut”
Claim · model-written summary
Perfluidone did not affect the isolated mesophyll cells.
- Taxon
- peanutArachis hypogaeae1
- Treatment
- perfluidonee0
- Outcome
- Cellse0
- Direction
- not affectede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Cells treated with perfluidone were not affected”
e1“mesophyll cells of peanut”
Claim · model-written summary
Diquat at 1 and 10 μM strongly inhibited peanut cell suspension growth in light and dark.
- Taxon
- peanutArachis hypogaeae0
- Treatment
- diquate1
- Outcome
- growth of nonphotosynthetic callus-derived peanut cell suspensionse0
- Direction
- inhibited stronglye0
- Value
- 1 and 10 μMe0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The growth of nonphotosynthetic callus-derived peanut cell suspensions was inhibited strongly either in the light or in the dark at 1 and 10 μM concentrations of either bipyridilium compound”
e1“(diquat and paraquat)”
Claim · model-written summary
Paraquat at 1 and 10 μM strongly inhibited peanut cell suspension growth in light and dark.
- Taxon
- peanutArachis hypogaeae0
- Treatment
- paraquate1
- Outcome
- growth of nonphotosynthetic callus-derived peanut cell suspensionse0
- Direction
- inhibited stronglye0
- Value
- 1 and 10 μMe0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The growth of nonphotosynthetic callus-derived peanut cell suspensions was inhibited strongly either in the light or in the dark at 1 and 10 μM concentrations of either bipyridilium compound”
e1“(diquat and paraquat)”
Claim · model-written summary
Diquat at 0.1 μM slowed peanut cell growth.
- Taxon
- peanutArachis hypogaeae1
- Treatment
- 0.1 μM diquate0
- Outcome
- Growthe0
- Direction
- slowede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Growth was slowed in cells treated with 0.1 μM diquat but not paraquat”
e1“peanut cell suspensions”
Claim · model-written summary
Paraquat at 0.1 μM did not slow peanut cell growth.
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Growth was slowed in cells treated with 0.1 μM diquat but not paraquat”
e1“peanut cell suspensions”
Claim · model-written summary
Soybean cell suspensions grew well in 1 μM diquat.
- Taxon
- soybean
Glycine maxe0 - Treatment
- 1 μM diquate0
- Outcome
- callus-derived soybean cell suspensionse0
- Direction
- grew welle0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“callus-derived soybean cell suspensions grew well in 1 μM diquat or paraquat”
Claim · model-written summary
Soybean cell suspensions grew well in 1 μM paraquat.
- Taxon
- soybeanGlycine maxe0
- Treatment
- paraquate0
- Outcome
- callus-derived soybean cell suspensionse0
- Direction
- grew welle0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“callus-derived soybean cell suspensions grew well in 1 μM diquat or paraquat”
Claim · model-written summary
Diquat at 10 μM strongly inhibited soybean cell growth.
- Taxon
- soybeanGlycine maxe0
- Treatment
- 10 μM of either herbicidee0
- Outcome
- growthe0
- Direction
- strongly inhibitede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“callus-derived soybean cell suspensions grew well in 1 μM diquat or paraquat; 10 μM of either herbicide strongly inhibited growth”
Claim · model-written summary
Ultrastructural analysis of isolated peanut mesophyll cells was of limited use because membranes were damaged in controls and treatments.
- Taxon
- peanutArachis hypogaeae0
- Outcome
- limited usefulness in assessing herbicide toxicity and mode of actione0
- Comparator
- untreated and treatede0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Ultrastructural analyses of isolated mesophyll cells were of limited usefulness in assessing herbicide toxicity and mode of action because both untreated and treated enzymatically isolated peanut mesophyll cells had damaged membranes with extensive lipid deposits”
Claim · model-written summary
Soybean cell suspensions remained undamaged up to six days, so reduced growth was not due to organelle destruction.
- Taxon
- soybeanGlycine maxe0
- Outcome
- undamagede0
- Qualifier
- up to 6 dayse0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“callus-derived soybean cell suspensions of both treated and untreated cells were undamaged for up to 6 days so that reduced growth of the cultures was not caused by destruction of organelles”
The same questions in other papers
paraquat · growth · Glycine max (soybean)Results differ
3 papers in the same direction as this paper · 4 in the opposite direction
- no effect
- negative
- negative
4 papers more in this group
See all 8 papers →paraquat · growth · Arachis hypogaea (peanut)Results agree
6 papers in the same direction as this paper
- negative
- negative
- negative
3 papers more in this group
See all 7 papers →herbicide · growth · Glycine max (soybean)Positive and negative results
61 papers in the same direction as this paper · 60 in the opposite direction
- positive
- positive
- positive
118 papers more in this group
See all 122 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.