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19-03-2021 17:37

Quijada Luis

I am trying to get a photo of alive paraphyses of

19-03-2021 14:49

Mirek Gryc

Hello everyone.I am studying this species for the

19-03-2021 12:12

Stefan Blaser

Hello everybody, With this collection I ended up

27-12-2019 16:58

Michel RIMBAUD

Hello forum,Does somebody could send me a key for

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Trouvés sur Corylus. Asques IKI-, bituniqués.

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UZUN Yasin UZUN Yasin

Hi to all. Could someone please send me these lite

19-03-2021 08:09

Stefan Blaser

Hello everybody, I need some Input on this one:

14-03-2021 17:46

William de Jong

Hi,Today I found a very small asco a dead leave of

01-03-2021 18:33

Blasco Rafael Blasco Rafael

Hola, He encontrado estas muestras sobre Juglans

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Garcia Susana

Hola, Estoy muy despistada con este ascomiceto. N

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Gibberella sp? on Acer.
Mirek Gryc, 22-03-2021 14:23

Hi.
Many times I found species from this kind but have usually missed conidiophores. This time, however, both forms occur at the same time almost in every sample collected so I think conidiophores belongs to this species.
I looked through all the available articles on Gibberella but nothing could match. Finally, I found a drawing of Gibberella intricans, Wollenweber, H.W. Fusaria Autographic Delineata, EDN 3: I, 660-1100: 810 (1930).
In principle, all features match my collection.
Initially measured the spores overripe, I did not fit their width. I found a less mature fruiter whose spores with sizes correspond to those from the engravings.
Relevant note is that the spores are in most 3-septata (rarely 5-septata).

Spores;
(27.7) 27.8 - 31.2 (31.5) × (5.3) 5.9 - 7.3 (7.5) µm
Q = (3.9) 3.94 - 5.27 (5.3) ;
Me = 29.1 × 6.6 µm ; Qe = 4.4
Conidia
31.3 - 37.2 × 4.6 - 4.89 (4.9) µm
Q = (6.8) 6.84 - 7.6 ;
Me = 33.7 × 4.7 µm ; Qe = 7.2


However, I am wondering a very poor reaction to KOH?
What is your opinion on it?
greetings
Mirek

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Bernard Declercq, 22-03-2021 17:49
Bernard Declercq
Re : Gibberella sp? on Acer.
Hi Mirec,

This is clearly a Fusarium ss. str.(syn.: Gibberella).
Compare with lignicolous species Fusarium lateritium Nees, ascospores as well as 3(5)-septate conidia seem to match.

Bernard
Mirek Gryc, 22-03-2021 19:43
Re : Gibberella sp? on Acer.
Hi Bernard.
Again, I had to look a bit of literature about it and compare my.
It seems to me that you are right. Features very good fit to the genre that you offered.
Thank you very much
Mirek