Green coated Dothideo - Forum ASCOFrance

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Green coated Dothideo

Adam Polhorský, 09-04-2016 17:15

Hello,

this fungus (0,9-1,2mm) was found abundantly on a dead fallen branches of Quercus sp., often hiding under bark. I am not aware of genus/species with such colouring- assume its not artificial.

Spores: hyaline dictyospores with 7 horizontal and 1 vertical septa
(18) 20-30 (32) x 8-12µm

Thank you for your help,
Adam

Salvador Tello, 09-04-2016 21:54

Re : Green coated Dothideo

Hola Adam.

Creo que su hongo puede ser Thyronectria, aunque habría que mirar algunas cosas más, como Paráfisis apicales, paredes de los peritecios, reacción en KOH, etc. En ramas de Quercus ilex crece T. giennensis con esporas que se podrían ajustar a sus medidas, pero son de color marrón-verdoso.

Tal vez le pueda ayudar Walter Jaklitsch.

Saludos.
Salvador.

Gernot Friebes, 09-04-2016 23:47

Re : Green coated Dothideo

Hi Adam,

have a look at this publication on the genus mentioned by Salvador, containing a key, descriptions, and illustrations: http://www.ncbi.nlm.nih.gov/pmc/articles/PMC4312933/

Best wishes,
Gernot

Adam Polhorský, 10-04-2016 12:50

Re : Green coated Dothideo

Thank you very much Salvador and Gernot! I read through the paper and microscopicaly Thyronectria rhodochlora is a good fit, but host is different. Seems to be a difficult genus, Hermann Voglmayr will take a closer look.

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