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Sclerotinia minor vs borealis
Raúl Tena Lahoz,
03-04-2011 23:00
Hola a todosI am trying to distinguish between Sclerotinia minor and Sclerotinia borealis. I know that Sclerotinia minor has 4 nucleus per spore, but I do not know how many nucleus has Sclerotinia borealis. Somebody knows that or has information about Sclerotinia borealis?
J'essaie de faire la distinction entre Sclerotinia minor et Sclerotinia borealis.
Sclerotinia minor a 4 noyaux par des spores, mais ne sais pas combien ont la Sclerotinia borealis. Ce que quelqu'un sait ou avoir des renseignements à ce sujet?
Gracias por adelantado,
Raúl
Hans-Otto Baral,
03-04-2011 23:22
Re:Sclerotinia minor vs borealis
Hola Raul
fine photo with clearly 4 nuclei. How is the macro of your Sclerotinia? How big are they? Where did you collect? Also: Are the paraphyses free of VBs? Sclerotium without host tissue?
I do not know S. borealis.
Zotto
fine photo with clearly 4 nuclei. How is the macro of your Sclerotinia? How big are they? Where did you collect? Also: Are the paraphyses free of VBs? Sclerotium without host tissue?
I do not know S. borealis.
Zotto
Raúl Tena Lahoz,
04-04-2011 09:19
Re:Sclerotinia minor vs borealis
Hi Zotto
A bit tricky, I used CombineZP ;-)
I cannot load photos now, this night I will. Diametre of apos: 1-2 mm. Sclerotia: 1-1,5 mm, without host tissue. Collected in a burnt area next to Plantago crassifolia and other grasses. No refractive guttules in paraphyses, but filled with guttules. All spores of the same length within an ascus.
Raúl
A bit tricky, I used CombineZP ;-)
I cannot load photos now, this night I will. Diametre of apos: 1-2 mm. Sclerotia: 1-1,5 mm, without host tissue. Collected in a burnt area next to Plantago crassifolia and other grasses. No refractive guttules in paraphyses, but filled with guttules. All spores of the same length within an ascus.
Raúl
Raúl Tena Lahoz,
04-04-2011 21:30
15014.pdf
Hans-Otto Baral,
09-04-2011 21:11
Re:Sclerotinia minor vs borealis
Hi Raul
Martin found the key on Sclerotinia on the web:
http://replay.waybackmachine.org/20081208042643/http://biologi.uio.no/bot/ascomycetes/Taxa/Sclerotinia.html
Here I notice that S. borealis is said to have ascospores with pointed ends, thick-walled, 14-21 x 6-9 µm. This seems to be distinctly longer than in your fungus. No info on nuclei.
So with the key I think this is S. minor.
Zotto
Martin found the key on Sclerotinia on the web:
http://replay.waybackmachine.org/20081208042643/http://biologi.uio.no/bot/ascomycetes/Taxa/Sclerotinia.html
Here I notice that S. borealis is said to have ascospores with pointed ends, thick-walled, 14-21 x 6-9 µm. This seems to be distinctly longer than in your fungus. No info on nuclei.
So with the key I think this is S. minor.
Zotto
Raúl Tena Lahoz,
10-04-2011 13:09
Re:Sclerotinia minor vs borealis
Thanks Zotto (and thanks Martin)
I give up, it must be minor. I have found an article of Shumacher a Kohn where they talk about octanucleate ascospores for Sclerotinia borealis! See page 1632:
http://www.nrcresearchpress.com/doi/pdf/10.1139/b85-224
Another article of Sclerotinia borealis with drawings and description of Groves and Bowerman:
http://www.nrcresearchpress.com/doi/pdf/10.1139/b55-047
So a "borealis" species, not mediterranean.
And finally found and article where says Plantago can be a host for Sclerotinia minor:
http://cps-scp.ca/download/cjpp-archive.1005/Vol19/CJPP19(3)272-280(1997).pdf
Raúl
I give up, it must be minor. I have found an article of Shumacher a Kohn where they talk about octanucleate ascospores for Sclerotinia borealis! See page 1632:
http://www.nrcresearchpress.com/doi/pdf/10.1139/b85-224
Another article of Sclerotinia borealis with drawings and description of Groves and Bowerman:
http://www.nrcresearchpress.com/doi/pdf/10.1139/b55-047
So a "borealis" species, not mediterranean.
And finally found and article where says Plantago can be a host for Sclerotinia minor:
http://cps-scp.ca/download/cjpp-archive.1005/Vol19/CJPP19(3)272-280(1997).pdf
Raúl