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White tiny disco on Sphagnum
Yatsiuk Iryna,
20-10-2014 13:27
Hi there!Need help with this mysterious finding on Sphagnum leaflets.
Asci with croziers, IKI blue 48-60*9-14,5 um in size.
Spores with several small apical oil drops, non-septate, 9,2-11,5(13,2)*2,8-3,3 um
Paraphyses 1,8-2 um wide.
No visible hairs, ectal excipulum textura angularis.
Do you have any idea?
Best regrds,
Irina
Yatsiuk Iryna,
20-10-2014 13:33
Re : White tiny disco on Sphagnum
There are images of fruitbodies
and one bad picture, which however probably gives idea about ectal excipulum
and one bad picture, which however probably gives idea about ectal excipulum
Nina Filippova,
20-10-2014 13:50
Re : White tiny disco on Sphagnum
Hello Irina,
to me it looks close to Discinella schimperi, although your spores are smaller. The Sphagnum host is also different, the species was described from S. squarrosum, (but i found collections which are close morphologically from S. papillosum and S. magellanicum).
http://www.ascofrance.fr/search_forum/21673
Nina.
to me it looks close to Discinella schimperi, although your spores are smaller. The Sphagnum host is also different, the species was described from S. squarrosum, (but i found collections which are close morphologically from S. papillosum and S. magellanicum).
http://www.ascofrance.fr/search_forum/21673
Nina.
Yatsiuk Iryna,
20-10-2014 14:56
Re : White tiny disco on Sphagnum
Hi Nina,
Thank you for the answer! In your topic I've seen very interesting collection: close to D. schimperi, but with smaller spores and on other host. Well, my specimen has even smaller spores! As for the host - I showed a picture to the bryologist and he says most probabaly it is S.palustre. It was collected in a small relict bog in Kharkiv region - a refugium of boreal vegetation.
So, probably this species varies strongly depending on the host and geographic region, or, just as well, it can be other species at all...
Best regards,
Irina
Thank you for the answer! In your topic I've seen very interesting collection: close to D. schimperi, but with smaller spores and on other host. Well, my specimen has even smaller spores! As for the host - I showed a picture to the bryologist and he says most probabaly it is S.palustre. It was collected in a small relict bog in Kharkiv region - a refugium of boreal vegetation.
So, probably this species varies strongly depending on the host and geographic region, or, just as well, it can be other species at all...
Best regards,
Irina
Yatsiuk Iryna,
20-10-2014 15:54
Re : White tiny disco on Sphagnum
Also, I've read a discussion about mucilaginous cells, attacked by the fungus, and that is what I accidently found in the internet:
"In the axils between the leaves and stems are mucilage-producing papillae and it is these papillae that the fungus infects".
http://www.cpbr.gov.au/bryophyte/case-studies/hymenoscyphus-schimperi.html
Maybe it will be of some use.
"In the axils between the leaves and stems are mucilage-producing papillae and it is these papillae that the fungus infects".
http://www.cpbr.gov.au/bryophyte/case-studies/hymenoscyphus-schimperi.html
Maybe it will be of some use.
Nina Filippova,
20-10-2014 15:55
Re : White tiny disco on Sphagnum
These two my collections should be worked out, and i have sent them already to Eugene Popov (Saint-Petersburg) hoping that we will have some work with them in coming winter. I hope that there will by clarified information after comparison with the holotype of D.schimpery and probably molecular analysis will be envolved.
Nina.
Nina.
Hans-Otto Baral,
20-10-2014 18:12
Re : White tiny disco on Sphagnum
Hello Irina
how sure are you with the ascus base? Do you have photos of it? If it were simple-septate (perhaps with protuberances), then it might be Rhizoscyphus ericae as well.
I have looked at the LSU sequence of Discinella schimperi by Stenroos et al. and found it to cluster in a clade with Pezoloma ciliifera and P. atrichicola, but also not far from Hyaloscypha and Rh. ericae. Would be good to gain an ITS sequence of D. schimperi which is absent from GenBank.
Zotto
how sure are you with the ascus base? Do you have photos of it? If it were simple-septate (perhaps with protuberances), then it might be Rhizoscyphus ericae as well.
I have looked at the LSU sequence of Discinella schimperi by Stenroos et al. and found it to cluster in a clade with Pezoloma ciliifera and P. atrichicola, but also not far from Hyaloscypha and Rh. ericae. Would be good to gain an ITS sequence of D. schimperi which is absent from GenBank.
Zotto
Yatsiuk Iryna,
21-10-2014 08:59
Re : White tiny disco on Sphagnum
Hi. Zotto
Here is the photo. It was a crozier to my mind...
Irina
Here is the photo. It was a crozier to my mind...
Irina
Hans-Otto Baral,
21-10-2014 10:35
Re : White tiny disco on Sphagnum
It looks like a crozier indeed, I think it is a doubtless fusion between the hook and the basal cell. Since also the spores are rather long and narrow, it might be a relative of R. ericae?
Zotto
Zotto
Yatsiuk Iryna,
21-10-2014 14:44
Re : White tiny disco on Sphagnum
After quick search, it remains unclear to me, if R.ericae or relative species can form mycorrhiza with Sphagnum? It is reported to be symbiotic with ericoid plants and liverworts, but nothing is said about Sphagnum...
Is there there any information about this species on your CD? I didn't find it under names Hymenoscyphus/Rhizoscyphus, but maybe it is somewhere else?
Is there there any information about this species on your CD? I didn't find it under names Hymenoscyphus/Rhizoscyphus, but maybe it is somewhere else?
Best regards,
Irina
Yatsiuk Iryna,
21-10-2014 14:48
Re : White tiny disco on Sphagnum
I found an Ascofrance topic started by Nina Filippova and saw information about this species!
Hans-Otto Baral,
21-10-2014 15:18
Re : White tiny disco on Sphagnum
It is probably under Pezoloma on the DVD, at least in the online version.