Claim · model-written summary
When Douglas-fir seedlings and rhizosphere bacteria from the same geographic site were pooled, shoot branch number and root dry weight increased significantly relative to uninoculated controls.
- Taxon
- Douglas-fir
Pseudotsuga menziesiie0 - Treatment
- treatments of Douglas-fir seedlings and rhizosphere bacteria that originated from the same geographic sitee0
- Interactor
- rhizosphere bacteriae0other
- Outcome
- shoot branch number and root dry weighte0
- Direction
- increasese0
- Comparator
- uninoculated controlse0
Not reportedMaterialGeneCompoundOrgan / stageSecond interactorSecond interactor roleSettingValueQualifier
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“When treatments of Douglas-fir seedlings and rhizosphere bacteria that originated from the same geographic site were pooled and compared with uninoculated controls, significant increases in shoot branch number and root dry weight were also detected”
Title
C. P. Chanway; F. B. Holl Canadian Journal of Botany 1994. doi:10.1139/b94-077
Other claims from this paper (8)
- Intervention effect Seed inoculation with either Pseudomonas aureofaciens K23 or Arthrobacter oxydans N74 stimulated the rate of Douglas-fir seedling emergence; the effect was not ecotype specific.
- Intervention effect Inoculation did not affect germination percentage of Douglas-fir.
- Intervention effect Arthrobacter oxydans strain N74 significantly stimulated seedling branching and enhanced root and shoot dry weight of the Williams Lake Douglas-fir ecotype.
- Intervention effect Arthrobacter oxydans strain N74 had no significant stimulatory effect on growth of the Chilliwack Douglas-fir ecotype.
- Intervention effect Pseudomonas aureofaciens strain K23 significantly stimulated shoot branching and root dry weight of Chilliwack Douglas-fir.
- Intervention effect Pseudomonas aureofaciens strain K23 had no significant stimulatory effect on growth of Williams Lake Douglas-fir.
- Intervention effect No significant difference in seedling growth from uninoculated controls was found when Douglas-fir seedlings and rhizosphere bacteria from different sites were pooled.
- Mechanism The authors hypothesize that plant-microbe specificity may be an important component of Douglas-fir interactions with beneficial rhizosphere bacteria in the field.