Describe the change
Water-soaked, soft or disintegrating tissue.
Bacterial diseases
Bacterial soft rot and tissue collapse
Wet, collapsing tissue is a reason to separate produce and investigate timing. It can be a primary infection or secondary decay after injury.
Organism / cause: Several organisms; Burkholderia gladioli pv. agaricicola is one researched example
Where this evidence applies: Symptom differential. The cited Burkholderia evidence includes Agaricus bitorquis; it is not the cause of every soft rot on this crop list.
Picture → observation → next check
A visual guide to your observations
- Bruising or colour change
Ask whether it appeared before picking, during handling or in storage. A brown area is not automatically bacterial blotch.
- Moisture inside a pack
Record condensation, temperature changes and elapsed time. Do not use a visual match to release a suspect lot.
- Time, temperature and lot
Link harvest, packing and transport records so affected produce can be traced and assessed.
Keep another explanation open
Heat or chilling injury followed by secondary decay.
Collect one useful piece of evidence
Reconstruct the harvest-to-storage timeline.
A visual match is only a starting point. A laboratory must identify the organism and interpret whether it caused the primary damage.
01 · Observe
What you may see
- Water-soaked, soft or disintegrating tissue.
- Rapid deterioration during growing, packing or storage.
No verified reusable diagnostic photograph is included for this entry. The illustration above explains observation context, not a confirmed disease specimen. Consult the original source figures where available.
02 · Compare
What can look similar
- Heat or chilling injury followed by secondary decay.
- Fungal rot and physical crushing.
How it may arise or move
Damaged wet tissue and contaminated equipment can sustain contamination; the initial cause may be earlier than visible collapse.
03 · Check
Collect evidence before changing the crop
- Reconstruct the harvest-to-storage timeline.
- Compare temperature records, condensation and package damage.
What confirmation needs: A laboratory must identify the organism and interpret whether it caused the primary damage.
Use the field record and sampling checklist →04 · Respond
What to do next
- Hold affected lots from sale; do not taste to assess acceptability.
- Separate crop-disease diagnosis from food-safety release decisions.
These are investigation and containment steps, not a guaranteed cure. Do not eat, sell or distribute suspect material on the strength of a visual match. Do not culture unknown contaminants or experiment with pesticides in a growing room.
05 · Learn
Reduce recurrence
- Reduce physical injury and maintain the species-appropriate handling chain.
- Clean contact surfaces and trace every packing lot.
After intervention, compare new affected units, crop condition and inspection results against the same recorded baseline. A lack of visible growth does not, by itself, verify decontamination or food safety.
Read the stage-by-stage prevention plan →Evidence & sources
Research examples support a differential, not a universal pathogen assignment.
- Bioactive and Structural Metabolites of Pseudomonas and Burkholderia Species Causal Agents of Cultivated Mushrooms Diseases ↗
Research review, PMC · 2008
Used for: Bacterial soft rot and yellowing; Burkholderia gladioli pv. agaricicola in Agaricus bitorquis.
Limit: Research taxonomy and mechanism, not evidence that all soft rot is this organism.
- Genomic Characterisation of Mushroom Pathogenic Pseudomonads and Their Interaction with Bacteriophages ↗
Research article, PMC · 2020
Used for: P. agarici gill disease and P. tolaasii blotch distinctions.
Limit: Experimental phage results are not a farm treatment protocol.
Compare related explanations
Food & worker safety
Postharvest spoilage, bruising and ageing
Separate when damage started from when someone noticed it. That distinction prevents a storage problem being mislabelled as a growing-room disease.
Harvest, packing, transport and storage; a crop can deteriorate after leaving a healthy room.
Signs, checks & response →Food & worker safety
Foodborne contamination is not the same as crop disease
A healthy-looking mushroom is not proof of food safety. A crop-disease photo guide cannot detect Listeria, Salmonella or unacceptable residues.
All edible-mushroom food chains; enoki outbreak evidence is a specific example, not a claim about every crop.
Signs, checks & response →Environmental disorders
Heat stress, chilling injury and temperature excursions
A room-air reading can miss a hot substrate core. Equally, a cold chain suitable for button mushrooms must not be assumed suitable for paddy straw.
Substrate, crop and storage temperatures must be interpreted separately for each species.
Signs, checks & response →