Nuclear encoded chloroplast genes


Here we go again: lessons in genetics from one who only 
WORKED  for  nearly 5 year proffesional with plants but about 50 
years as a hobby. Just because all the data like those in 
Arabidopis are very confusing for a starter I have translated and 
applied them to Hosta.
DATA
About a 1000 genes are involved in the operating of a chloroplast 
900 of these are encoded in the nucleus THis is for sure new to 
you but old hat for anyone working in the field.One of those in the 
nucleus changes a chloroplast protein such a way that the 
chloroplast becomes yellow ( for details about the protein see 
article of K Vaughn). So that is why we get about 50 % yellow 
ofspring from a yellow plant ( I did not speak about yellow 
CENTERED plants, I know some of these contain a lethal yellow). 

Now the publication on Wogon from K Vaughn showing 
cytoplasmic inheritance. I have had very intensensive exchange of 
letters with him. He clearly stated to me that he never found 
another like it and that all Wogons now in culture are nuclear 
inherited

> Crossing over is common during meiosis when homologous chromosomes 
> pair. 
Yes and compared with meiotic rec,  mit rec is rare and is often enhanced 
by radiation, an experiment I always do with my students. 
BUT COMPARED TO MUTATION MIT REC IS NOT RARE! 
So again a case were someone reads something and missapplies 
it, not hampered by any actual experience with subject. 

> >4. its explanation as a causal factor for sports is pure theory, not
> >based upon fact, without proof of any kind.
Everytime I give the example of a green edge in a yellow plant. I 
still wait for an alternative explanation.
Look at all the data and explanations for somaclonal variation = 
sport!

> Ben is a yeast geneticist, 
NO, BEN is a general geneticist having worked with fungi yeast 
drosophila and plants I have just written two articles about 
taxonomy in plants one accepted for Plant Biology How many 
articles did you write on this( or any other plant related) subjects?

> Now, if Ben has done any research on mitotic crossing over in hosta I 
> wish he would present his results to a peer review scientic journal.
 I cannot publish such an article in a scientific journal as it is not 
new to the scientific community although it maybe new for you. It is
just basic genetics apllied to hosta That is why I wrote if for the 
AHS.


Ben J.M.Zonneveld
Clusius lab pobox 9505
2300 RA Leiden
The Netherlands
mintemp-16C(5F)
Zonneveld@RULbim.LeidenUniv.NL
Fax: 31-71-5274999
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