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02-11-2014 19:11

Alain BRISSARD

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02-11-2014 07:33

Beñat Jeannerot Beñat Jeannerot

Adio to all,Sorry to use again this method to foun

02-11-2014 16:04

Beñat Jeannerot Beñat Jeannerot

Adio to all,A question to Germans.I've seen a sign

01-11-2014 22:20

Zuzana Sochorová (Egertová) Zuzana Sochorová (Egertová)

Good evening, can this be something different than

27-10-2014 20:09

Peter Thompson

Hello Everyone,I have found a Gibberella species w

31-10-2014 14:59

Bernard Declercq Bernard Declercq

Hi there,Collected on water-soaked rotten wood of

31-10-2014 14:16

Garcia Susana

Hi:With this I do not know correctly interpret wha

31-10-2014 10:33

Gilbert MOYNE

Bonjour;Encore besoin de faire appel à votre bon

07-10-2014 17:19

Malcolm  Greaves Malcolm Greaves

Can someone help with this Scutellinia. Found a gr

30-10-2014 16:34

Alex Akulov Alex Akulov

Fungicolous hyphomycete on Lasiosphaeria strigosa

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Myrothecium causing Sphagnum infection
Nina Filippova, 25-10-2014 17:28
Dear colleagues,

There are not may pathogens of Sphagnum species and therefore it is interesting to find the signs of Sphagnum damage caused by fungal infection. I have found one anamorphic species in my collection which was not recognized before, and i hoping now that it could be assigned at least to its generic position.

Preliminary it was identified as Myrothecium cf. roridum. This taxon is reported from different plant litters and as parasitic on some hosts (but not on Sphagnum) by Domsch (2007). Still, it is common soil saprotroph, and was reported by some authors from peat in peatlands.

12.07.2013, Khanty-Mansiysk town, Western Siberia; 60,89263N 68,67715E
Graminoid-Sphagnum hollows in ombrotrophic bog, on living plats of Sphagnum balticum, S. jensenii, seems parasitizing on these plants. The fungus caused infectious spots 10 and more cm in diameter where Sphagnum looked faded. Such infectious spots were quite regularly met in this year (e.g. not rare event) and the attacked Sphagnum was not weakened by any damage (in natural undisturbed conditions).

Conidiogenous cells bottle-shaped, 4-5 in cluster, mean size 17 x 3 mk; conidia fusoid (upper) to cylindrical (lower in chain), hyaline, in chains, connected by thin constriction, with hyaline appendages, 5.7 (5.1–7.3) x 1.8 (1.5–2) mk (n=13).

Could you direct me to the close morphologically genera and species there could be? I could not find also the key (Tulloch, M. Genus Myrothecium Tode ex FR Mycol. Pap. 130. 1972).

There are some not very detailed photos below. Nina.
  • message #31810
Walter Gams, 25-10-2014 17:47
Walter Gams
Re : Myrothecium causing Sphagnum infection
Dear Nina, You may ssend me a culture to my home address at Molenweg 15, 3743 CK Baarn, Netherlands. I shall look at it  microscopically and deposit the strain at CBS, where a molecular analysis will be made. But this may take several weeks.
Best wishes Walter Gams
Nina Filippova, 25-10-2014 17:52
Re : Myrothecium causing Sphagnum infection
Thanks Walter, i will answer you in private.