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16-04-2013 16:32

Nicolas VAN VOOREN Nicolas VAN VOOREN

Here is a collection of Orbilia crenatomarginata t

15-04-2013 22:31

Joop van der Lee Joop van der Lee

Found on cow dung.A circular shaped fruitbody (66.

16-04-2013 00:02

Esquivel-Rios Eduardo

Hi All.Black mildew in Andira sp. (Fabaceae) from

11-04-2013 03:21

Roland Labbé

Bonjour !Voici un Orbilia probable de la région d

14-04-2013 15:32

hannie wijers

Could this be a Podospora decipiens be? Found on h

13-04-2013 19:48

Nicolas VAN VOOREN Nicolas VAN VOOREN

Bonsoir.Trouvé ce jour, sur bois de feuillu, dÃ

11-04-2013 09:52

Salvador Tello

Hola a todos.Esta Scutellinia la he encontrado hac

13-04-2013 12:37

Yannick Mourgues Yannick Mourgues

Avec Squamarina cartilaginea sur sol calcaire (ter

13-04-2013 11:45

Yannick Mourgues Yannick Mourgues

Bonjour à tous.Toutes petites sphères noires à

09-04-2013 08:38

Stefan Blaser

Hello everybody I would appreciate any advice on

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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