Plant Growth Promoting Characteristics in Some Flavobacterium spp. Isolated from Soils of Iran
Bibliographic record
Abstract
Plant growth promoting rhizobacteria (PGPR) is referred to a heterogeneous group of beneficial rhizospherebacteria that could enhance plant yield through one or more mechanisms. Flavobacterium has been noted asPGPR in almost all review articles. However, there are a few studies regarding plant growth promotion imposedby them. Some of Plant growth promoting characteristics such as Phosphate solubilizing capacity, ability to useof 1-Amino Cyclopropan-1-Carboxylate (ACC) as sole nitrogen source and production of auxin, siderophore,salicylic acid, chitinase and hydrogen cyanide were evaluated in forty-four flavobacteria isolated fromrhizosphere of wheat. Results showed that none of the isolates were able to produce siderophore, salicylic acidand chitinase and they were not able to use ACC as well. Determining the siderophore showed that none isolatesdid not grow on Chrome Azurol S (CAS) Agar medium. The results of this part were further analyzed usingCAS Agar Diffusion (CASAD) method, but the results were also negative. HCN production was observed in allisolates, but in lowest limit. Thirty-four isolates were capable to solubilize insoluble inorganic Phosphate (P)sources. The average rate of P-solubilization was 3.54 ?g Pml-1, ranging from zero to 37.48 ?gPml-1. There wasa significant negative correlation (r = -0.81**) between solubilized P and the final pH of the growth medium. Inthis study, all the isolates were able to produce auxin, ranging from 0.27 to 12.03 ?gml-1 averaged by 2.03.Considering the ability of the isolates to produce auxin and for P-solubilization, it is necessary to evaluate theireffect on growth and yield of different crop plants.
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How this classification was reachedexpand
Full frame machine prediction
Teacher imitationNot calibrated prevalence, not ground truth. Human validation pending. The Gemma side is a direct model label for every work in the frame, read from the title-only record. The Codex side is a classifier learned from the 10,348 direct Codex labels and calibrated to design-weighted sample rates; fields without enough sample support carry no Codex call. Candidate is the union of the two sides; consensus is their intersection. These outputs are machine_predicted_unvalidated and are not human labels.
Distilled classifier scores by category (both heads)
| Category | Codex | Gemma |
|---|---|---|
| Metaresearch | 0.000 | 0.000 |
| Meta-epidemiology (narrow) | 0.000 | 0.000 |
| Meta-epidemiology (broad) | 0.000 | 0.000 |
| Bibliometrics | 0.001 | 0.001 |
| Science and technology studies | 0.000 | 0.000 |
| Scholarly communication | 0.000 | 0.000 |
| Open science | 0.000 | 0.000 |
| Research integrity | 0.000 | 0.000 |
| Insufficient payload (model declined to judge) | 0.000 | 0.000 |
Machine scores (provisional)
The two teacher heads of the student model, read on this work. A score orders the frame for review; it never asserts a category, and the validation status ships verbatim with every row.
Baseline scores from an immature model (maturity gate not passed, 7 training rounds). Scores rank; they never assert a category.
score_only:v0-immature-baseline · verbatim from the scoring run: score_only means the number may rank works, and no category label ships from itClassification
machine, unvalidatedMachine predicted; a candidate call from one source (direct Gemma or distilled Codex), not a consensus.
How this classification was reached, model by model and score by score, is at the end of the page under "How this classification was reached".