12-11-2025 09:25
Viktorie Halasu
Hello, I need help with a pale terrestric Pseudom
11-11-2025 20:16
Bohan JiaHi, lastly I have found these tiny yellow decayin
09-11-2025 13:20
Josep Torres
Hello.A tiny ascomycete, appearing as erupting gra
08-11-2025 00:29
Francois Guay
I found this species in Quebec, Canada, on herbace
Sclerotinia ou ??
jean claude chasle,
18-07-2019 23:09
Ceci est ma première demande sur le forum que je consulte régulièrement.
Elle concerne des sujets récoltés sur une planche pourrie de pin (latte) dans un lieu frais.
Au départ apothécies blanchâtres courtement stipitées devenant grises avec un stipe plus long.
Poils présents, à la marge, sur la face inférieure et sur le stipe qui émerge d'un sclérote noir.
Diamètre de 1 à 3 mm
Stipe 2-3mm de long
Spores biguttulées 4-4.5 / 2-2.5 µm
Asques 36-40 /4, Cr +, IKI très faible
Merci pour vos avis.
Jean Claude
Viktorie Halasu,
19-07-2019 00:36
Re : Sclerotinia ou ??
Hello,
this looks like Martininia panamaensis, very nice find, congratulations. From continental France?
Best regards,
Viktorie
this looks like Martininia panamaensis, very nice find, congratulations. From continental France?
Best regards,
Viktorie
jean claude chasle,
19-07-2019 08:50
Re : Sclerotinia ou ??
Hello,
Thank you so much, it looks great ...
The harvest was made in the west of mainland France
Do you know the geographical distribution of this fungus?
Best regards,
Jean Claude
Thank you so much, it looks great ...
The harvest was made in the west of mainland France
Do you know the geographical distribution of this fungus?
Best regards,
Jean Claude
Hans-Otto Baral,
19-07-2019 09:20
Re : Sclerotinia ou ??
Bonjour Jean Claude
welcome to the forum! Indeed your sample looks much the same as one from the far west of Canada which I have in my folder Martininia.
I did not compare the literature but believe these fit the type.
Interestingly, in GenBank there are two CBS sequences which differ by over 5% in the ITS. One is from Panama, the other from France (det. R.P. Korf). This might indicate that there is some specific difference between tropical and temperate populations.
I see no iodine reaction on your pic. Do you have a photo of mature asci? Are they 8-spored? because there is a var. tetraspora.
Zotto
welcome to the forum! Indeed your sample looks much the same as one from the far west of Canada which I have in my folder Martininia.
I did not compare the literature but believe these fit the type.
Interestingly, in GenBank there are two CBS sequences which differ by over 5% in the ITS. One is from Panama, the other from France (det. R.P. Korf). This might indicate that there is some specific difference between tropical and temperate populations.
I see no iodine reaction on your pic. Do you have a photo of mature asci? Are they 8-spored? because there is a var. tetraspora.
Zotto
Michel Hairaud,
19-07-2019 09:45
Re : Sclerotinia ou ??
Bonne pioche, Jean Claude !
Je t'envoie la description princeps (Martinia panamaensis ) et la recombinaison en Martininia
Amitiés
Michel
jean claude chasle,
19-07-2019 21:55
Re : Sclerotinia ou ??
Merci Zotto, merci Michel,
Il y a 8 spores dans les asques.
La reaction IKI semble peu évidente, c'est plus ou moins bleu.
Si mon interprétation est bonne, dans la description que Michel m'a envoyé le J+ est suivi d'un point d'interrogation (cf photo)
Un séquençage semble s'imposer pour savoir à quel type d'exemplaire associer cette récolte.
Amitiés
Jean Claude
Il y a 8 spores dans les asques.
La reaction IKI semble peu évidente, c'est plus ou moins bleu.
Si mon interprétation est bonne, dans la description que Michel m'a envoyé le J+ est suivi d'un point d'interrogation (cf photo)
Un séquençage semble s'imposer pour savoir à quel type d'exemplaire associer cette récolte.
Amitiés
Jean Claude
Hans-Otto Baral,
19-07-2019 22:01
Re : Sclerotinia ou ??
On your good ascus photo I would say IKI negative.
jean claude chasle,
19-07-2019 22:19
Re : Sclerotinia ou ??
Yes it's true you are right, but this one ?
Hans-Otto Baral,
20-07-2019 09:00
Re : Sclerotinia ou ??
Again negative.