data/rag/knowledge_base/Azotobacter/vinelandii.json

{
  "schema_version": "1.0",
  "level": "species",
  "genus": "Azotobacter",
  "species": "vinelandii",

  "overview": {
    "short": "Azotobacter vinelandii is a well-studied, nitrogen-fixing aerobic Gram-negative rod widely used in microbiological research.",
    "clinical_context": "Not associated with human infection; encountered in environmental or research settings."
  },

  "expected_fields": {
    "Gram Stain": "Negative",
    "Shape": "Rods",
    "Motility": "Positive",
    "Capsule": "Positive",
    "Spore Formation": "Negative",
    "Haemolysis": "Negative",
    "Haemolysis Type": "None",
    "Media Grown On": [
      "Nutrient Agar"
    ],
    "Colony Morphology": [
      "Large",
      "Mucoid",
      "Smooth"
    ],
    "Oxygen Requirement": "Aerobic",
    "Growth Temperature": "20//37",
    "Catalase": "Positive",
    "Oxidase": "Positive",
    "Indole": "Negative",
    "Urease": "Negative",
    "Citrate": "Positive",
    "Methyl Red": "Negative",
    "VP": "Negative",
    "H2S": "Negative",
    "DNase": "Negative",
    "ONPG": "Negative",
    "Coagulase": "Negative",
    "Gelatin Hydrolysis": "Variable",
    "Esculin Hydrolysis": "Negative",
    "Nitrate Reduction": "Positive",
    "NaCl Tolerant (>=6%)": "Negative",
    "Lipase Test": "Negative",
    "Lysine Decarboxylase": "Negative",
    "Ornithine Decarboxylase": "Negative",
    "Ornitihine Decarboxylase": "Negative",
    "Arginine dihydrolase": "Negative",
    "Glucose Fermentation": "Negative",
    "Lactose Fermentation": "Negative",
    "Sucrose Fermentation": "Negative",
    "Maltose Fermentation": "Negative",
    "Mannitol Fermentation": "Negative",
    "Sorbitol Fermentation": "Negative",
    "Xylose Fermentation": "Negative",
    "Rhamnose Fermentation": "Negative",
    "Arabinose Fermentation": "Negative",
    "Raffinose Fermentation": "Negative",
    "Trehalose Fermentation": "Negative",
    "Inositol Fermentation": "Negative",
    "Gas Production": "Negative",
    "TSI Pattern": "Unknown",
    "Colony Pattern": "Unknown",
    "Pigment": "Green",
    "Motility Type": "Peritrichous"
  },

  "species_markers": [
    {
      "field": "Nitrate Reduction",
      "value": "Positive",
      "importance": "medium",
      "notes": "More consistently nitrate-reducing than some other Azotobacter species."
    }
  ],

  "common_confusions": [
    {
      "genus": "Burkholderia",
      "reason": "Environmental aerobic Gram-negative rods with overlapping biochemical traits."
    }
  ],

  "when_to_question_identification": [
    "Clinical infection suggests alternative organism.",
    "Fermentative metabolism is inconsistent with A. vinelandii."
  ],

  "recommended_next_tests": [
    {
      "test": "Nitrogen fixation assay",
      "reason": "Core defining metabolic capability."
    },
    {
      "test": "MALDI-TOF MS",
      "reason": "Definitive identification of Azotobacter species."
    }
  ]
}