blue stain fungi

Overview
blue stain fungus
Photo by Honey Fae (Farah)
 

There are between 100 and 250 species of sap staining fungi, and they are divided into three groups. One of these groups is known as blue stain fungi. It is an informal grouping of various species of sac fungi (Ascomycota) that cause blue discoloration in the heartwood of trees without destroying the wood. The fungi are from the genera Ceratocystis, Ophiostoma, Ceratocystiopsis, and Grosmannia. They do not form a single taxonomic group because they do not descend from a common ancestor. Not all species in those genera cause blue staining.

Blue stain fungi damages the living tree by clogging the vascular system, leading to decline and premature death of the tree. The damage caused to the wood is merely aesthetic. The discoloration makes the wood undesirable and less profitable but does not weaken the wood.

 
           
 
Description
 
 

Blue stain fungi spores are carried to a living tree on the body of a wood boring beetle. Their thread-like cells (hyphae) produce dark melanin on their walls to protect them from light, drought, and the tree’s own defenses. Blue discoloration spreads from the wound on the outside through the heartwood in a wedge-shaped pattern following the spread of the fungus.

Boxelder trees produce a brilliant red stain in the wood as a response to the fungus.

 
     
 
Distribution
 
 

Distribution Map

 

Sources

24, 26, 29, 30, 77.

 
  8/22/2022      
         
 
Taxonomy
 
  Kingdom Fungi (fungi)  
  Subkingdom Dikarya  
  Phylum Ascomycota (sac fungi)  
       
 

Subordinate Taxa

 
 

Genus Ceratocystiopsis

Genus Ceratocystis

Genus Grosmannia

Genus Ophiostoma

 
       
 

Synonyms

 
 

 

 
       
 

Common Names

 
 

blue stain fungi

blue stain fungi

 

 

 

 

 

 

 

 

 

 

 

Glossary

Hypha

A thread-like cell of a fungus that is the main mode of vegetative growth: the basic structural unit of a multicellular fungus. Plural: hyphae. Collectively, the hyphae of a fungus is the mycelium.

 
 
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Honey Fae (Farah)

 
 

This fungi changes colors through its stages.

 
    blue stain fungus   blue stain fungus  
           
 
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Other Videos
 
  Blue Stain Fungus
ampsonjim295
 
   
 
About

Dec 17, 2012

Blue stain fungus caused by mountain pine beetle

 

 

Camcorder

 
 
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  Honey Fae (Farah)
5/1/2022

Location: Hennepin County

blue stain fungus

 
  Honey Fae (Farah)
4/10/2022

Location: Hennepin County

blue stain fungus

 
           
 
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Created: 8/22/2022

Last Updated:

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