Abstract
A procedure is described for obtaining a large number of nodules (approximately 1000) on a hydroponically grown soybean plant after a brief exposure to Rhizobium japonicum. This procedure was used to study the effect of medium nitrate upon nodulation of the soybean plant. It was found that nitrate, at concentrations equal to or greater than 2.0 mM, restricted nodule development but did not inhibit appreciably the activity or synthesis of nitrogenase in those few nodules that were formed.
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 3
Claim · model-written summary
Brief Rhizobium japonicum exposure produced approximately 1000 nodules on hydroponic soybean.
- Taxon
- soybean
Glycine maxe0 - Treatment
- brief exposure to Rhizobium japonicume0
- Interactor
- Rhizobium japonicume0symbiont
- Outcome
- nodulese0
- Value
- approximately 1000e0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“A procedure is described for obtaining a large number of nodules (approximately 1000) on a hydroponically grown soybean plant after a brief exposure to Rhizobium japonicum”
Claim · model-written summary
Nitrate at 2.0 mM or higher restricted soybean nodule development.
- Taxon
- SoybeanGlycine maxt0
- Treatment
- nitrate, at concentrations equal to or greater than 2.0 mMe0
- Outcome
- nodule developmente0
- Direction
- restrictede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“nitrate, at concentrations equal to or greater than 2.0 mM, restricted nodule development”
t0“Soybean Plants”
Claim · model-written summary
Nitrate did not appreciably inhibit nitrogenase activity or synthesis in the nodules that formed.
- Taxon
- SoybeanGlycine maxt0
- Treatment
- Nitratet1
- Gene
- nitrogenasee0
- Outcome
- activity or synthesis of nitrogenasee0
- Direction
- did not inhibit appreciablye0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“did not inhibit appreciably the activity or synthesis of nitrogenase in those few nodules that were formed”
t0“Soybean Plants”
t1“Nodulation of Hydroponically Grown Soybean Plants and Inhibition of Nodule Development by Nitrate”
The same questions in other papers
nitrogen · symbiosis · Glycine max (soybean)Positive and negative results
86 papers in the same direction as this paper · 59 in the opposite direction
- positive
- positive
- positive
142 papers more in this group
See all 146 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.