Diaphorte ?? - Forum ASCOFrance

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Diaphorte ??

Blasco Rafael, 04-11-2020 09:04

Hola, he recogido unas muestras sobre Cirsium sp. pienso en Gnomonia o Diaphorte pero no se cual puede ser.
Sobre ramitas de Cirsium sp
Sumergidos en la madera
Cuellos largos de 0,63--0,85 x 0,11--0,13
Esporas 12--14 x 3,6--4 (15x4,3)
Algunas de las esporas se estrechan en el centro
Ascas 43--46 x 8
J- ????
Rfaael

Stoykov Dimitar, 05-11-2020 07:09

Re : Diaphorte ??

Hallo Rafael,

To some extent it looks similar to D. eres s.l., in spitespore appendages are not visible. Biguttulate spores, slightly constricted at septa.
Pseudostromatic tissues could help in assuming Diaporthe genus. But long beaks Gnomonia is also possible, if there is a species reported on similar hosts.
We know as of 2008 molecular studies are crucial for species/genera indentification.

Regards,

Dimitar

Blasco Rafael, 05-11-2020 10:48

Re : Diaphorte ??

Gracias Stoykov
Las esporas son todas de 4 gutulas, con iki se ven de uno a tres septos.
He mirado si tenian apendices pero no veo en ninguna espora, por lo que pienso que no tienen
Un saludo
Rafael

Stoykov Dimitar, 05-11-2020 11:17

Re : Diaphorte ??

In Wehmeyer (1933) there is a variety of D. pardalota on Cirsium stems, but with conic and shorter beaks, but after mentioning of 3-septate spores suggests your record could be something new. Breviappendix has similar appearance of the beaks above host.

Best,

Dimitar

Blasco Rafael, 05-11-2020 11:38

Re : Diaphorte ??

Gracias, preparo otras muestras en rojo congo para asegurar que no hay apendices y comento
Rafael

Blasco Rafael, 05-11-2020 13:02

Re : Diaphorte ??

Parece que no hay apendices
Rafael