[Q] Anther culture - Space aliens stole my mitochondria!
mbleeker at euronet.nl
Sun Jun 18 01:48:35 EST 1995
>When using anther culture, pollen grains are dusted onto the surface of a
>nutrient medium. Occasionally, one will germinate into a monoploid plant. My
> Where does this plant get its mitochondria from?
>Do pollen grains have mitochondria?
That appears to be the case than.
> If so, how come mitochondrial DNA is always inherited down the maternal line?
A pollen is not exactly a spermcell. It grows out to become a very small
gametophyt. Think of ferns, but then much smaller and on/ in the receptical
of the overy. This explains the presence of the mitochondria. The gametophyt
in turn, produces the male 'sperm', not much more then a nucleus, which has no
mitochondria. The exceptional monoploid plant your talking about, must have
taken mitochondria from other tissue of the same gametophyt...
Well, I have no experience here, just a shot at it as you called it, based
on more general knowledge...
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