17-09-2024 17:33
Pierre-Yves JulienRécolte le 03/09/2024 lors de la Session Zone Alp
17-09-2024 15:31
Bernard Declercq
Hello,I am looking for following paper:IMI Descrip
17-09-2024 02:12
B Shelbourne
• Macro and habitat seems like Hymenoscyphus s.l
06-09-2024 16:23
Andgelo Mombert
Bonjour,J'ai trouvé cette semaine Caesiodiscus po
15-09-2024 12:51
B Shelbourne
• Macro and habitat suggest Cyathicula.• Confi
08-10-2019 21:31
Jason Karakehian
Hi AscoFrance community, Does anyone have a PDF
08-09-2024 21:31
B Shelbourne
• Stromatised substrate and macro like genus Rut
13-09-2024 07:19
Thierry Blondelle
BonjourDans le genre Trichobolus, quelles sont les
Calycina conorum
Yannick Mourgues,
01-02-2008 23:49
Bonsoir.J'ai observé que Calycina conorum rougissait fortement à la blessure. Est-ce que l'un d'entre vous saurait pourquoi ? Quelle est la réaction chimique responsable de cela ?
I have watched that Calycina conorum becomes strongly reddening when hurted. Do you know why ? What is the chemical process ?
Merci par avance.
Yannick
Perz Piotr,
02-02-2008 09:39
Re:Calycina conorum
Hi Yannick
I thint this is oxidation of VBs i paraphyses, marginal- & excipulum cells.
Pimpek
I thint this is oxidation of VBs i paraphyses, marginal- & excipulum cells.
Pimpek
Hans-Otto Baral,
02-02-2008 11:38
Re:Calycina conorum
Yes, it is a wide-spread property in Helotiales and always the result of oxidation of refractive vacuoles. Typical of Lachnum, Bryoscyphus, some of Calycina etc. I think it has to do with benzol rings in which the double bindings change through oxidation and therefore get coloured. It is always a lethal process so that redbrown paraphysis or hair cells are never coloured as long as they are alive.
We have so important vital characters like VBs and we know so little about thier chemical background. It would be an interesting field of research for chemistry.
Zotto
We have so important vital characters like VBs and we know so little about thier chemical background. It would be an interesting field of research for chemistry.
Zotto