On 25 Oct 1995 19:01:12 -0700 Jon Monroe wrote:
> From: Jon Monroe <MONROEJD at VAX1.ACS.JMU.EDU>
> Date: 25 Oct 1995 19:01:12 -0700
> Subject: Epidermis of xerophytes
> To: plant-ed at net.bio.net>> Plant-eders:
>> In a recent botany lab on leaves our students looked at a prepared slide of
> cross sections of mesophyte, hydrophyte and xerophyte leaves. Most of the
> adaptations make sense to me except for the multiple layers of epidermal cells
> in the xerophyte. We thought about the types of stresses these plants might be
> under, including high UV light, and came up with the hypothesis that perhaps
> these extra epidermal cells provide for more UV absorbing potential since
> epidermal cell vacuoles do accumulate phenolic compounds that seem to serve
> such a function. Does anyone know if this has been examined? Do you know of
> other potential functions? Raven, Evert and Curtis (3rd edition, p.461) show
> them in Oleander but don't mention them in the text.
>> Thanks! Jon
>> -----------------------------------------------------------------
> Jonathan Monroe voice: 540-568-6649 (office)
> Department of Biology 540-568-6045 (lab)
> James Madison University fax: 540-568-3333
> Harrisonburg, VA 22807-0001 e-mail: monroejd at jmu.edu> www: www.jmu.edu/biology/biofac/jmonroe/jmonroe.html
> -----------------------------------------------------------------
Water storage? Try p81 in Plant Structure:function and development Romberger et al 1993
( or p114 in Physiological plant anatomy Haberlandt 1884 / 1914 !!!)
Adrian Bell Bangor U.K.
