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25-06-2021 11:04

Mirek Gryc

Hello One more collection sent by a colleague.I d

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Hello,I am working on this species, but I cannot f

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Castillo Joseba Castillo Joseba

De ayer sobre un tronco viejo de haya Al verlo me

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Michel Hairaud Michel Hairaud

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24-06-2021 21:15

Khomenko Igor Khomenko Igor

A few days ago I found this discomycete in Ottawa,

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Chris Yeates Chris Yeates

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04-06-2021 09:37

Christian Lechat Christian Lechat

Chers collèguesAscofrance a été fondé en 2003

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Christian Lechat Christian Lechat

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Sphaeropsis sapinea / Pinus nigra ?
Aouali Souhila, 08-06-2021 18:16
Hi,

I lately studied P. nigra pine needles suffering blight symptoms. Could this be Sphaeropsis sapinea? based on literature the conidia are not septate, however in some literature cases of one septate conidia are present too. Another possibility that I came throu is Phoma acicola? No measurings taken yet. 

Thank you.

Souhila
  • message #69065
  • message #69065
  • message #69065
  • message #69065
Chris Yeates, 08-06-2021 23:35
Chris Yeates
Re : Sphaeropsis sapinea / Pinus nigra ?
Hi

Usually 0-1 septate, but can be more in older conidia see image below (not a great photo, from some years ago, but shows the septa OK). I think you are correct if the measurements fit - a Phoma would have much smaller non-septate, colourless conidia.

Regards, Chris
  • message #69072
Aouali Souhila, 10-06-2021 14:20
Re : Sphaeropsis sapinea / Pinus nigra ?
Hi,

Thank you Chris. I'll do measurements and compare.

Best regards, Souhila.