Claim · model-written summary
Increasing inoculum density did not improve nitrogenase positive tubes or activity variation.
- Taxon
- wheat
Triticum aestivumt0 - Treatment
- inoculum densitye0
- Outcome
- percentage of nitrogenase-positive tubese0
- Direction
- did not increasee0
Not reportedComparator
Verbatim
e0“Increasing the concentration of yeast extract or the inoculum density, adding NaOH solution in the side arm of Pankhurst tubes to absorb CO 2 , and vernalizing the seeds did not increase the percentage of nitrogenase-positive tubes and did not decrease variation in acetylene-reducing activity.”
t0“wheat”
Title
Devender K. Jain; R. J. Rennie Canadian Journal of Microbiology 1986. doi:10.1139/m86-058
Other claims from this paper (10)
- Observation Wheat seedlings varied greatly in inducing acetylene reducing activity in root associated bacteria.
- Observation Several wheat seedlings failed to induce nitrogenase in Bacillus strains.
- Observation Several wheat seedlings failed to induce nitrogenase in Azospirillum brasilense.
- Intervention effect Increasing yeast extract concentration did not increase nitrogenase positive tubes or decrease activity variation.
- Intervention effect Adding NaOH did not improve nitrogenase positive tubes.
- Intervention effect Vernalizing seeds did not improve nitrogenase positive tubes.
- Intervention effect Raising incubation temperature from 25 to 27 °C induced nitrogenase in Bacillus.
- Intervention effect Raising incubation temperature to 27 °C did not induce nitrogenase in Azospirillum.
- Intervention effect At 30 °C nitrogenase was induced in Azospirillum strains.
- Recommendation Authors conclude that the spermosphere model is impractical for screening wheat nitrogenase induction unless genetically uniform lines control variation.