home *** CD-ROM | disk | FTP | other *** search
- Newsgroups: bionet.plants
- Path: sparky!uunet!usc!zaphod.mps.ohio-state.edu!caen!batcomputer!cornell!newsstand.cit.cornell.edu!news
- From: Thomas Bjorkman <Thomas_Bjorkman@cornell.edu>
- Subject: Re: Plant communication/sensing references
- Message-ID: <1992Dec22.172603.15056@mail.cornell.edu>
- X-Xxdate: Tue, 22 Dec 92 12: 29:42 GMT
- Sender: news@mail.cornell.edu
- Nntp-Posting-Host: 132.236.4.121
- Nntp-Posting-User: tnb1@cornell.edu
- Organization: Cornell University
- X-Useragent: Nuntius v1.1.1d7
- References: <1992Dec18.145440.19868@pixel.kodak.com>
- Date: Tue, 22 Dec 1992 17:26:03 GMT
- Lines: 24
-
- In article <BzIJq7.6JH@world.std.com> Edwin Barkdoll, eb3@world.std.com
- writes:
- > There is no work on action potentials in plants which
- >approaches the depth of that in animals but there is some evidence
- >that the primary ions are K+ and Cl- not K+ and Na+. Don't have a
- >reference handy but you might look for a review by Simmons (?) in _The
- >New Phytologist_ I think the year is 1982. There is probably much
- >more recent work that I know nothing about.
-
- Considering that the patch clamp (mostly used since 1982) is the tool
- that has yielded most of the information about ion channels, this seems
- an exceptionally dated reference. The patch clamp has been used very
- heavily on plants: Hedrich and Neher put it to work on plant cells right
- away.
-
- So far there are several classes of channels that have been
- characterised. The main one is the inward rectifying potassium channel.
- If I remeber right, it has a small sodium conductance, but that is
- irrelevant given the very low sodium concentrations. Check out recent
- publications by Sarah (Sally) Assmann for an example of some nice work in
- regard to signalling. Julian Schroeder was part of the original patch
- clamp team and has contributed a lot to characterizing the various
- channels. There are quite a few more, but these are more appropriate
- authors to look for.
-