Geotropic fungi

[David Humphries]

Geotropism or Gravitropism, describes the reiteration of a fruiting body due to gravity, in reaction to it's host having shifted from verticle to horizontal.

 

Fallen over, for example.

 

I'm interested in seeing what species of Fungi people have seen doing this.

 

Heres a couple from me.

 

1st, Psueudotrametes gibbosa - lumpy bracket, that was on a fallen Birch

 

2nd, Piptoporus betulinus - Razor strop, again on fallen Birch

 

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Edited February 25, 2010 by Monkey-D

[SJH]

Is this any use to you?

 

[Tony Croft aka hamadryad]

Good thread david, some awsome examples

[David Humphries]

Nice Gano SJH

Is it on Birch?

 

 

Tony, I don't believe you haven't got something pictorish to contribute.

 

Get them up here

 

Or are you saving them for sommit

 

 

 

I saw huge numbers of Fomes on Beech last October in Spain, can't believe I didn't come across any geotropes, it's the classic n'all

 

 

 

 

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Edited February 25, 2010 by Monkey-D

[slack ma girdle]

I thought that goetropism was the action of roots, i.e. they grow down into the earth. The oposite to phototropism, where plants grow towards the sun.

Although i am renowned for getting things wrong.

P.S. the top two photo look like they come from outer space.

Edited February 25, 2010 by slack ma girdle
Halfwit

[David Humphries]

Term covers both

 

 

 

Have also heard it refered to as gravitropism, but not sure if this is technically correct

 

 

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[nepia]

I thought that goetropism was the action of roots, i.e. they grow down into the earth. The oposite to phototropism, where plants grow towards the sun.

Although i am renowned for getting things wrong.

P.S. the top two photo look like they come from outer space.

 

 

Likewise, in fact my A-level biology (only Nuffield, not real biology:sneaky2:) made (most) roots positively geotropic and (most) shoots negatively geotropic. That's why whichever way up you sandwich your broad bean between the blotting paper and the jamjar the root will always go downwards and the shoot upwards.

More usefully you can increase the flowering of many plants, e.g. roses, by tying down laterals to invoke the geotropic development of flowering vertical shoots.

[SJH]

I think it was on Birch.

[arb culture]

Term covers both

 

 

 

Have also heard it refered to as gravitropism, but not sure if this is technically correct

 

 

.

 

After digging out the dusty text books I can tell you that both geotropism and gravitropism are correct (or at least they were in 1981).

 

If you want to get even more precise, your fungi might even be exhibiting diagravitropic or perhaps even plagiogravitropic (depending on the angle) reiterative growth.

 

[David Humphries]

After digging out the dusty text books I can tell you that both geotropism and gravitropism are correct (or at least they were in 1981).

 

If you want to get even more precise, your fungi might even be exhibiting diagravitropic or perhaps even plagiogravitropic (depending on the angle) reiterative growth.

 

 

Thanks for the input,

which dusty tomes would these be AC ?

 

 

 

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