non-programmed cell death in eukaryotic plants & prokaryotes
artyw2 at yahoo.com
Sun Feb 1 12:14:48 EST 2004
"Robert Goodman" <robgood at bestweb.net> wrote in message news:<bvemb8$s46no$1 at ID-140940.news.uni-berlin.de>...
> I want to teach my Plants & People students about a fundamental fact of
> life: death. A cell can reach a point of no return in sickness such that it
> must die, death being a permanent condition. In necrotic cell death in
> eucaryotic animal cells, there's an unarguably irreversible step -- rupture
> However, most plant cells don't have an organelle called a lysosome. One
> source tells me they have organelles that do the same in necrosis, it's just
> that they're not CALLED lysosomes. That true? If not, is necrosis in
> plants akin to the death of procaryotes?
(sorry about the partial post)
Perhaps this will help http://www.pnas.org/cgi/content/full/98/12/6957
although they say that "Although this scenario resembles PCD in
mammalian systems, specific illustrations of a functionally conserved
program in plants exhibiting the hallmark characteristics of PCD are
limited and molecular details of this process in plants remain unclear
According to the sources that I use in teaching my Biology class
lysosomes are rare in plants. When I get done screwing around in
usenet I will have to prepare my next lecture, which will be on cell
"parts" and methods used to study them. Mebbe I will talk about
plants vs animal cells more this year...
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