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24-06-2025 22:29

Danny Newman Danny Newman

Hello AscoFrance, I have recently photographed, c

24-06-2025 14:00

Warre Van Caenegem

I'm currently in Croatia doing fieldwork that is n

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Francois Guay Francois Guay

Hi, I found this tiny sulfur yellow asco growing o

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Enrique Rubio Enrique Rubio

I would like to hear your opinion on this Scutelli

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DirkW DirkW

Dear friends,anyone out there with this paper?:DOU

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Henk Remijn

Good day,In a burned forest near Hulst on the bord

21-06-2025 22:27

David Chapados David Chapados

Hi,Is this a Calycina? C. herbarum?Growing on an h

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Josep Torres Josep Torres

Hello.Small, blackish, mucronated surface grains s

11-06-2025 16:26

Jason Karakehian Jason Karakehian

Hi everyone, I am looking for the following protol

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Fusarium
Hans-Otto Baral, 23-05-2010 21:30
Hans-Otto BaralIn Arcon, le Gué de la Chaux, on attached Pinus sylv. twig in ca. 1 m above ground, grew this Fusarium. Sporodochia 0.6-1 mm diam.

Is it possible to recognize a teleomorph genus, or a species?

Zotto
  • message #11579
Hans-Otto Baral, 23-05-2010 21:32
Hans-Otto Baral
Re:Fusarium
Conida ca. *28-34 x 3.8-4.4 µm
  • message #11580
Christian Lechat, 24-05-2010 06:56
Christian Lechat
Re:Fusarium
Hi Zotto,
your Fusarium resembles to Fusarium circinatum = Gibberella circinata known on Pinus.
Unfortunately, it is impossible to determine this fungus without cultivating it, we have to know if it produces microconidia.
Regards,
Christian
Hans-Otto Baral, 30-06-2010 10:56
Hans-Otto Baral
Re:Fusarium
Hi Christian

you know I made a culture of thsi fungus, which grew quite rapidly. After adding acetic acid to it (you recommended tartaric acid) I obtained abundant conidia. There are mainly the large ones but some are small and only 1-septate. Dies that help?

Zotto
  • message #12152
Christian Lechat, 30-06-2010 15:47
Christian Lechat
Re:Fusarium
Hi Zotto,
on your photo I see conidia 0-4-septate and I would like to know if there are some conidia 5-septate in your culture. Could you please to send us an image of conidiogenesis from aerial mycelium and another from sporodochia.
Cheers,
Christian
Hans-Otto Baral, 30-06-2010 16:16
Hans-Otto Baral
Re:Fusarium
The conidia are mainly 3-4-septate, but I saw a few with 5 septa, see here.

The conidiophores in culture are difficult to photograph, the images are quite bad.
  • message #12163
Hans-Otto Baral, 30-06-2010 16:19
Hans-Otto Baral
Re:Fusarium
Here is a section of the sporodochia
  • message #12164
Hans-Otto Baral, 30-06-2010 16:19
Hans-Otto Baral
Re:Fusarium
Detail (see also near the beginning
  • message #12165
Christian Lechat, 30-06-2010 17:53
Christian Lechat
Re:Fusarium
size of conidia fits rather well with F. circinatum according to the scale bar on your third photo but it is very difficult to say which species of Fusarium it is without a complete description.
Maybe Gary will have an opinion?
Christian