Jump to content
Tommy Hutchinson

Comparing visual inspection of trees and molecular analysis of internal wood tissues for the diagnosis of wood decay fungi

Recommended Posts

Some interesting information on how successful fungal /decay detection by VTA is:

 

ACADEMIC.OUP.COM

Abstract. The extent to which the presence of wood decay fungi in standing trees is underestimated when diagnosis is based on the visual inspection of trees wa

 

 

Share this post


Link to post
Share on other sites

Interesting...thanks for sharing.  The main takehome point for me is that between 15 - 58% of trees tested by PCR had decay fungi present (a smaller number than I would have thought), but if it is latent in the sapwood or effectively compartmentalised it doesn't pose an immediate issue for the tree.  Fruiting bodies are an indication that a particular decay fungi is present and active in the tree and probably has been for a while, and obvs should be seriously appraised, but their presence/absence is only one strand of VTA, which looks at the tree, and its' responses to a number of different factors, as a whole.

  • Like 2

Share this post


Link to post
Share on other sites

What's interesting is that fungi are allways present, they never will not be. They're just waiting for the environment to change so they can switch from latent to active. I think trees are more complex than we give them credit for. Just look into the numbers of life that live in their leaves (phyllosphere), it's insane! 

 

Ultimately arborsits would like to know the full extent of the structural damage caused by fungi. We're getting closer and an arborists approach must be holistic. However, not everyone has all the detection equipment to use to help assist a more holistic and accurate decision, this can, and still does mean premature deaths of trees. 

 

 

Share this post


Link to post
Share on other sites

The Pyhllosphere! :-)

 

'The surface area of the phyllosphere is approximately twice as great as the land surface area, and this environment provides a habitat for numerous microorganisms that colonize leaf surfaces (where they mostly form aggregates) and the spaces inside leaves.'

 

https://nph.onlinelibrary.wiley.com/doi/full/10.1111/nph.15054

Edited by Tommy Hutchinson

Share this post


Link to post
Share on other sites

Look how cool this is: 

 

Figure 1.
Why spatial scales matter. To illustrate the situation that most microbes find themselves on leaf surfaces, assume a human subject on the island of Trinidad, which has similar proportions to a human as a bean leaf to a bacterium. Assuming that the human cannot move, has no vision, nor sense of hearing and is left only with its sense of touch and sense of smell, the immediate surrounding becomes vitally important. In other words, that human will not be able to perceive any other part of the island. This is comparable to how individual single‐celled microbes perceive a leaf. Without sufficient amounts of water, free movement of bacteria is restricted and they only perceive signals, such as sugars, amino acids or volatiles, diffusing to their occupied site. Thereby, the microhabitat conditions drive the experience and behaviour of individual bacteria.

 

nph15054-fig-0001-m (1).jpg

  • Like 1

Share this post


Link to post
Share on other sites

Join the conversation

You can post now and register later. If you have an account, sign in now to post with your account.
Note: Your post will require moderator approval before it will be visible.

Guest
Reply to this topic...

×   Pasted as rich text.   Paste as plain text instead

  Only 75 emoji are allowed.

×   Your link has been automatically embedded.   Display as a link instead

×   Your previous content has been restored.   Clear editor

×   You cannot paste images directly. Upload or insert images from URL.


  • Featured Adverts

About

Arbtalk.co.uk is a hub for the arboriculture industry in the UK.  
If you're just starting out and you need business, equipment, tech or training support you're in the right place.  If you've done it, made it, got a van load of oily t-shirts and have decided to give something back by sharing your knowledge or wisdom,  then you're welcome too.
If you would like to contribute to making this industry more effective and safe then welcome.
Just like a living tree, it'll always be a work in progress.
Please have a look around, sign up, share and contribute the best you have.

See you inside.

The Arbtalk Team

Follow us

×
×
  • Create New...

Important Information

We have placed cookies on your device to help make this website better. You can adjust your cookie settings, otherwise we'll assume you're okay to continue.