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- Path: sparky!uunet!biosci!daresbury!news
- From: suter@VAX.MPIZ-KOELN.MPG.dbp.de
- Newsgroups: bionet.plants
- Subject: rna from seeds
- Message-ID: <1992Nov16.172953.24139@gserv1.dl.ac.uk>
- Date: 16 Nov 92 19:30:40 GMT
- Sender: list-admin@daresbury.ac.uk
- Distribution: bionet
- Lines: 48
- Content-Identifier: 12
- Original-To: plantbio@uk.ac.daresbury
- Conversion: Prohibited
-
-
- Subj: rna from seeds
- --------------------------------------------------------------------------------
-
- i am repeating this question on behalf of detlef becker, who is getting
- rather frustrated....
-
- he is trying to isolate mRNA from tobacco seeds. he has already tried two
- classes of methods: guanidinium and phenol. basically what happens is that
- everything turns an ugly kind of brown and is very sticky.
- to circumvent this, he has added vitamin C and triton: total RNA looks
- better then.
- but he is unable to isolate mRNA with either dynabeads or oligo dT cellulose...
- both these matrices are attacked by his total RNA mix and partly
- destroyed (this could be a pH effect: the Fe++ may dissolve from the
- magnetobeads at low pH).
-
- as i understood, he has learned from others in the mpi that they have
- practically the same problems with RNA from the seeds of other plants
- (rape i believe).
-
- could anybody suggest what substances in seeds produce these problems ?
- does anybody have a sure-fire method, that (s)he or a clever colleague
- has used already ??? (yeah, yeah, he will accept a kit
- also, as long as it works).
-
- please post your answers to me or the newsgroup, i will forward them to detlef.
-
-
-
-
- cheers,
-
- clemens
-
-
-
-
-
- ===============================================================================
- Clemens Suter-Crazzolara, PhD
- Max-Planck-Institut fuer Zuechtungsforschung
- Abteilung Genetische Grundlagen der Zuechtungsforschung
- Carl-von-Linne Weg 10
- 5000 Koeln 30
- Tel. xx49-221-5062.221 fax. xx49-221-5062.21
- suter@vax.mpiz-koeln.mpg.dbp.de
- ===============================================================================
-