Loss of mitochondria (was: Is Carl Woese losing a Kingdom?

julie beth wood juliebeth at mail.utexas.edu
Wed Sep 25 18:18:11 EST 1996

In article <52bnto$lea at mserv1.dl.ac.uk>, G.CLARK at lshtm.ac.uk (Graham Clark) says:
>>While some botanists like to limit the term "plastid" to only refer to
>>chloroplasts and similar plastids, in general the term means any
>>organelle with a chromosome that presumably is derived from an
>>endosymbiotic event, and this definition would include mitochondria
>>and similar organelles as well.
>I am not a botanist and I have never heard the term plastid used in
>reference to mitochondria. The definition of plastid I know is:
>A member of a family of organelles  unique to plants having their own 
>small genome and enclosed by a double membrane (chloroplasts, chromoplasts,
>leucoplasts, tonoplasts, etc.) 
>Taken from Alberts et al Mol Biol of the Cell

But then there is a botany text (Worth, Botany of Plants), that defines a 
plastid simply as an "organelle in the cells of certain groups of 
eukaryotes that is the site of such activities as food manufacture and 
storage; plastids are bounded by a double membrane."  

However, in all my enormous experience, i've never heard the word plastid
used to describe mitochondria.  :)

julie beth wood
Now conveniently located in Austin!

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