DNA yield from plant tissue.
s_mka1 at eduserv.its.unimelb.EDU.AU
Tue Dec 3 23:05:58 EST 1996
Does anyone know the theoretical upper limit for genomic DNA/mg in
expanding eucalyptus leaf tissue? I'm a bit worried that my 2ug/mg yield
from leaf discs is suspiciously high. Even commercial kits advertise only
a 0.3-0.8ug/mg DNA yield. The pellets are also a pink-purple colour, but
260/280 is always 1.8-1.9. Could RNA be the culprit (though there's only a
fairly faint smear at the bottom of my gels)? I don't use RNase, but I
would have thought that not using RNA-grade reagents or equipment should
have resulted in much of it degrading - especially considering the 40min
incubation in non-sterilised lysis buffer.
Any ideas greatly appreciated!
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