Fungal Colonisations

  • Posted on: 28 September 2018
  • By: Matt Bell

Four Principle strategies employed by trees decay fungi to colonise woody tissues and the conditions required

 

Heart Rot Fungi- Many of the fungi of a heart wood rot will penetrate the stem or roots via injury or high stressed trees. Fungi can adapt to inhospitable conditions from a high or low level of C02. Heartwood fungi overtime have the ability to degrade substance which would deter hyphae such as tannings, polyphenols and resins. 

Exposed sapwood/ Ruderal- The removal of bark through injury exposes the sapwood to drying and aeration where organisms such as bacteria or non-decay fungi create ideal conditions from much more aggressive fungi to colonise and degrade the wood.

Intact sapwood/ Endophytes- Can live inside the trees tissues with out causing disease for long periods of time and will wait for the right conditons to become active, when a tree becomes stressed for a number of reasons lack of water or old age the endophytic fungi becomes active.

Saprophytes- the fungus is found living on dead or diseased wood recycling the organic materials, a large amount of fungus are Saprophytes, feeding on dead organic material, they can have water repellent properties that can prevent water from reaching the roots of plants.