Re: [IAWA Forum] ? inclusions in ray cells

From: Gerald Elgert <is423@juno.com>
Subject: Re: [IAWA Forum] ? inclusions in ray cells
Date: Thu, 22 Jun 2006 01:18:52 -0400

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Top of Thread: [IAWA Forum] ? inclusions in ray cells ALaure Decombeix
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Hi
        Please, send some photos. What kind of a technique are you using
for the microscopy; i.e., could this simply be an artifact of some sort? 
~~~><> Gerald Elgert

On Fri, 09 Jun 2006 09:21:11 +0200 ALaure Decombeix
<anne-laure.decombeix@cirad.fr> writes:
> Dear all,
> I am a French PhD student in paleobotany. I am currently studying
> Carboniferous woods and I have encontered strange dark inclusions in 
> the
> ray cells of some of them.
> These inclusions are of variable shape, often circular but sometimes
> elongated or square. Their size is around 30µm. The remarkable thing 
> is
> that they are surrounded by a clear zone bounded by a thin layer. (I 
> can 
> send some photos).
> I have found a reference of the same type of inclusion occurring in 
> a
> Devonian wood (Stubblefield et al., 1985) but the authors didn’t
> elucidate their true nature. They ruled out fungi spores because of 
> the
> various shapes and sizes. Could it be crystal? or resin (there's no
> resin canal in the rays of these woods)?
> Is it something that occurs in extant woods? Do you have some 
> references
> on this or know somebody who may help me?
> Thank you  in advance for your answers,
> ALaure
> 
> Anne-Laure Decombeix
> UMR "botAnique et bioinforMatique de l'Architecture des Plantes" 
> (AMAP)
> TA40/PS2, Boulevard de la Lironde
> 34398 MONTPELLIER CEDEX 5 FRANCE
> tel:04-67-61-75-52
> fax:04-67-61-56-68
> http://www.amap.cirad.fr
> anne-laure.decombeix@cirad.fr
> 
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> 
> 
> 
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