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Re: [Aroid-l] Re: variegata aroids

Well, there are many Arisaema with completely stable variegation of course, assuming you will allow all of the silver centered leaf forms to be included here, which I personally would, but maybe not others.  Michael can comment on the stability of his Amorph, but it seems less than "stable" from reading his posts.
There are of course many other things that cause variegation, including some chemicals that are not particularly harmful, i.e., antibiotics.  Some of these characteristics of antibiotics have even been used to cause readthrough of premature stop codons in human disease in order to obtain full-length protein as I am sure many on this forum are well aware.  A quick literature search will reveal a host of things that could be potentially used, although I would never suggest anyone use these things that does not atelast have some knowledge of fundamental scientific method and takes appropriate precautions.
Of course, if you  were really into this you could use a gene targeting approach or perhaps you could introduce a transgene on an inducible promotor, but this is now only in the realm of the true gene-jocks out there.
best of luck with everyones experimentation,
Zone 6a (and insanely warm for this time of year)
Daniel Devor, Ph.D.
Department of Cell Biology and Physiology
University of Pittsburgh
----- Original Message -----
Sent: Thursday, December 21, 2006 2:11 PM
Subject: [Aroid-l] Re: variegata aroids

Ok, but can we stabilize variegation? Are there any variegated tuberous or rhizomatous aroids?
----- Original Message -----
Sent: Thursday, December 21, 2006 5:36 PM
Subject: Re: [Aroid-l] variegata aroids + a lots of questions +contacts

Variegation can be induced with nasty mutagens like Nitrosomethyl urea.
I would not recommend doing so unless you have a compelling reason and
experience using such chemicals. There are a few viruses that cause
variegation but most of them harm the plant and make them useless. The
big exception is some forms of the mallow family Abutilon.
Micropropagation can induce many variations and some of the variegated
forms of plants do come from micropropagation but it appears to be low
frequency so finding them involves a great deal of chance and or large
commercial production where tens of thousands of plants are produced and
grown out. Spontaneous mutations of plastids can occur and are seen in
seedlings on occasion and this is the source of some variegated plants.
So the answer is not simple.


Michael Marcotrigiano, Ph.D
Director of the Botanic Garden and Professor of Biological Sciences
Smith College, Lyman Conservatory, College Lane
Northampton, MA 01063
email: mmarcotr@smith.edu
voice: 413-585-2741; fax: 413-585-2744
Trees are poems that earth writes upon the sky,
We fell them down and turn them into paper,
That we may record our emptiness.
~ Kahlil Gibran
>>> "Agoston Janos" <agoston.janos@citromail.hu> 12/21/06 10:39 AM >>>
Dear All,

Can somebody help me with variegated Araceae? Because I do not know how
variegation starts. Are there some viruses or chemicals which can induce
variegation? Can occure variegation by micropropagation? How often?

The second question would be: How to take care of Anubias and
Cryptocoryne. They are sold as aquatic plants, but my Anubias has grown
out from the tank. Do they need a dry period or what? What are the
requirements of Lysichitons. I have allready killed 5 pcs.

Sorry for the many questions, but I still not received the Aroid book,
and thank you for your help in advance!

I have new mail addresses.

contact@hagymarium.hu - not too often checked, but weekly
szaki@hagymarium.hu - - not too often checked, but weekly

And you can call me on skype: skype:viraghagymasz?call

Jani, Z5a
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