[Mycology] RE: Mycology Digest, Vol 44, Issue 2

Geis, Phil via mycology%40net.bio.net (by geis.pa from pg.com)
Wed Feb 11 15:23:34 EST 2009


The blue-greens - sorry, I don't know but the same melanins as in the dematiaceous fungi are also in A. fumigatus and some others and have the same antioxidant protective role in virulence.



-----Original Message-----
From: Baldwin, Ann M. [mailto:Ann.Baldwin from metmuseum.org] 
Sent: Wednesday, February 11, 2009 2:11 PM
To: Geis, Phil; mycology from oat.bio.indiana.edu; mycology from magpie.bio.indiana.edu
Subject: RE: Mycology Digest, Vol 44, Issue 2

Thanks, Phil.
Any thoughts about the greenish-blue colorants in Penicillium sp?  Or magenta produced by some Fusarium sp?
Ann


-----Original Message-----
From: mycology-bounces from oat.bio.indiana.edu [mailto:mycology-bounces from oat.bio.indiana.edu] On Behalf Of Geis, Phil
Sent: Wednesday, February 11, 2009 12:45 PM
To: mycology from oat.bio.indiana.edu; mycology from magpie.bio.indiana.edu
Subject: [Mycology] RE: Mycology Digest, Vol 44, Issue 2

Different pigments express different activities.  For dematiaceous fungi, the pigment melanin provides photo- and oxidant protection (both in the environment and in surviving phagocytosis).  To a limited extent - carotenoid pigments provide photoprotection and also are involved in sexuality of some fungi.

For examples:
The contribution of melanin to microbial pathogenesis JD Nosanchuk, A Casadevall - Cellular Microbiology, 2003 - Blackwell Synergy

Geis, P.A., and P.J. Szaniszlo. 1984. Carotenoid pigments and photoresistance in Wangiella dermatitidis. Mycologia 76: 270-275

Genes involved in carotene synthesis and mating in Blakeslea trispora.
Kuzina V, Ramírez-Medina H, Visser H, van Ooyen AJ, Cerdá-Olmedo E, van den Berg JA. Curr Genet. 2008 Sep;54(3):143-52. Epub 2008 Aug 2.

Certainly there are other pigments.

-----Original Message-----
From: mycology-bounces from oat.bio.indiana.edu [mailto:mycology-bounces from oat.bio.indiana.edu] On Behalf Of mycology-request from oat.bio.indiana.edu
Sent: Wednesday, February 11, 2009 12:05 PM
To: mycology from magpie.bio.indiana.edu
Subject: Mycology Digest, Vol 44, Issue 2

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Today's Topics:

   1. fungi pigmentation question (Teresa Cypher)


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Message: 1
Date: Tue, 10 Feb 2009 19:54:52 -0800 (PST)
From: Teresa Cypher <cypherbuss from yahoo.com>
Subject: [Mycology] fungi pigmentation question
To: mycology from magpie.bio.indiana.edu
Message-ID: <576395.94537.qm from web38508.mail.mud.yahoo.com>
Content-Type: text/plain; charset=iso-8859-1

Hi,

I am not sure if I am sending this to the correct address?  I got this address from a site that I visited and read an answer to a question about molds.

If there is anyone there willing to field this question, I would be so grateful.

What purpose does the color pigmentation of a mold serve?  Is it a sign of maturity?

Thanks, so very much :-)

Willow





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