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Sur Lonicera
Michel RIMBAUD,
31-03-2015 17:39
En cherchant des Dasyscyphus barbatus,
j'ai remarqué cette petite chose que je crois être un hyphomycète ...
Hauteur totale 0,3-0,4mm.
1 à 5 poils septés diam.12µ terminés par une touffe de bourgeons.
Quelqu'un sait-il ce que c'est ?
Merci.
Michel
Chris Yeates,
31-03-2015 21:29
Re : Sur Lonicera
Bonsoir Michel
this is indeed a 'hyphomycete'; for any hope of an identification one would need to see conidia (there may be mature liberated ones on the surface of the twig); also important is the way in which the conidia are formed - so images at higher magnification of the apices of those conidiophores.
Unfortunately I suspect your collection may be over-mature, but it is still worthwhile perservering. Keeping the twig damp in a fridge for a week might revive it . . .
Amitiés
Chris
this is indeed a 'hyphomycete'; for any hope of an identification one would need to see conidia (there may be mature liberated ones on the surface of the twig); also important is the way in which the conidia are formed - so images at higher magnification of the apices of those conidiophores.
Unfortunately I suspect your collection may be over-mature, but it is still worthwhile perservering. Keeping the twig damp in a fridge for a week might revive it . . .
Amitiés
Chris
Michel RIMBAUD,
01-04-2015 08:34
Re : Sur Lonicera
Hello Chris,
Thnaks a lot for your advice.
I'll do that you said and retry a week further.
Amités.
Michel
Thnaks a lot for your advice.
I'll do that you said and retry a week further.
Amités.
Michel
Michel RIMBAUD,
07-04-2015 18:30
Re : Sur Lonicera
Bonjour Chris,
I put it under the microscope a 2nd time, after 1 week into a humid paper.
I saw some conidies about 3,2 x 11µ.
I guess some of them to be 1-septed.
So I believe it cannot be a Periconia.
... Cladosporium ? ... Do you have another idea ?
Friendly.
Michel
I put it under the microscope a 2nd time, after 1 week into a humid paper.
I saw some conidies about 3,2 x 11µ.
I guess some of them to be 1-septed.
So I believe it cannot be a Periconia.
... Cladosporium ? ... Do you have another idea ?
Friendly.
Michel
Joey JTan,
08-04-2015 01:13
Re : Sur Lonicera
This reminds me of Periconiella.
Have you tried making slides with cellophane tape? This works well for fungi which produce delicate chains of conidia.
Have you tried making slides with cellophane tape? This works well for fungi which produce delicate chains of conidia.
Michel RIMBAUD,
08-04-2015 08:51
Re : Sur Lonicera
Hello Joey,
No, I don't know that method with cellopan tape.
I made a new slide this morning by the classic way.
And I got this one on the net ... very similar... but not certain.
http://openi.nlm.nih.gov/detailedresult.php?img=2104745_57fig5&req=4
Thanks for your help.
Michel
No, I don't know that method with cellopan tape.
I made a new slide this morning by the classic way.
And I got this one on the net ... very similar... but not certain.
http://openi.nlm.nih.gov/detailedresult.php?img=2104745_57fig5&req=4
Thanks for your help.
Michel
Joey JTan,
08-04-2015 21:26
Re : Sur Lonicera
Hello Michel,
Here are some instructions on the cellophane tape method: http://blog.mycology.cornell.edu/2011/10/27/explore-your-world-with-tape/
It is useful for looking at fungi on surfaces (e.g.: walls or leaves) and for observing delicate chains of conidia without breaking them apart.
Here are some instructions on the cellophane tape method: http://blog.mycology.cornell.edu/2011/10/27/explore-your-world-with-tape/
It is useful for looking at fungi on surfaces (e.g.: walls or leaves) and for observing delicate chains of conidia without breaking them apart.
Chris Yeates,
08-04-2015 22:24
Re : Sur Lonicera
I think Joey's suggestion of Periconiella is a very good one. There is a useful overview of this genus in Mycological Papers 111 "Dematiaceous Hyphomycetes VIII" by Martin Ellis. Let me know if you would like a PDF . . .
A slightly different 'sticky tape method' is outlined here: http://jcm.asm.org/content/38/12/4683.short I might give it a try as I am intending this summer to concentrate on fungal parasites on living leaves including Peronosporales and - more appropriate for this forum - ascomycete anamorphs like Oidium and Ramularia and its relatives.
Cordialement
Chris
A slightly different 'sticky tape method' is outlined here: http://jcm.asm.org/content/38/12/4683.short I might give it a try as I am intending this summer to concentrate on fungal parasites on living leaves including Peronosporales and - more appropriate for this forum - ascomycete anamorphs like Oidium and Ramularia and its relatives.
Cordialement
Chris
Michel RIMBAUD,
09-04-2015 08:19
Re : Sur Lonicera
Hello Joey and Chris,
Thanks one more time for your advices and the links attached.
I've learned it, it sems to be a very simple and usefull method.
Unfortunately I'll not be able to try it on my "Periconiella" because I have thrown it out.
Yes Chris, it'd be great if you can send me the PDf you cited to michrimbaud@aol.com
Cordialement.
Michel
Thanks one more time for your advices and the links attached.
I've learned it, it sems to be a very simple and usefull method.
Unfortunately I'll not be able to try it on my "Periconiella" because I have thrown it out.
Yes Chris, it'd be great if you can send me the PDf you cited to michrimbaud@aol.com
Cordialement.
Michel
Chris Yeates,
09-04-2015 21:18
Re : Sur Lonicera
Bonsoir Michel
I have emailed it to you
Cordialement
Chris
I have emailed it to you
Cordialement
Chris
Luc Bailly,
09-04-2015 22:37
Re : Sur Lonicera
Hello Chris, hello all,
I'd be interested also in that issue of "Dematiaceous Hyphomycetes".
Thanks in advance, cheers - LUC.
I'd be interested also in that issue of "Dematiaceous Hyphomycetes".
Thanks in advance, cheers - LUC.
Chris Yeates,
09-04-2015 23:08
Re : Sur Lonicera
Bonsoir Luc
C'est fait
Cordialement
Chris
C'est fait
Cordialement
Chris