From owner-photosynthesis@net.bio.net Sun Jul 03 23:00:00 1994 Path: biosci!galaxy.ucr.edu!ihnp4.ucsd.edu!swrinde!pipex!uknet!daresbury!daresbury!not-for-mail From: mbrgw@s-crim1.dl.ac.uk (R.G. Walters) Newsgroups: bionet.photosynthesis Subject: Where are the contents? Date: 4 Jul 1994 15:46:39 +0100 Organization: Daresbury Lab., Warrington, U.K. Lines: 14 Distribution: bionet Message-ID: <2v97cfINNs7a@s-crim1.dl.ac.uk> NNTP-Posting-Host: s-crim1.dl.ac.uk Once upon a time, Jonathan Marder produced a very useful, valuable and appreciated list of photosynthesis-friendly journal contents. I have been watching out for these journals in bionet.journals.contents, but to no avail. Anyone know where they are to be found? I HATE going to the library, only to find that there's nothing of immediate relevance. [our library is in a dark, dank hole reminiscent of the Black Hole of Calcutta.] TIA Robin Walters. Robert Hill Institute, Sheffield UK. A fact is an opinion that everyone agrees with. From owner-photosynthesis@net.bio.net Sun Jul 03 23:00:00 1994 Path: biosci!agate!spool.mu.edu!nigel.msen.com!yale.edu!xlink.net!zib-berlin.de!news.dfn.de!news.dfn.de!rrz.uni-koeln.de!RRZ.Uni-Koeln.DE!news.rz.uni-duesseldorf.de!ze8.rz.uni-duesseldorf.de!glebe1 From: glebe1@ze8.rz.uni-duesseldorf.de Newsgroups: bionet.photosynthesis Subject: CAM plants growing in the water (Help required) Date: Mon, 4 Jul 94 06:34:45 +0100 Organization: Heinrich-Heine-Universitaet Duesseldorf, Germany Lines: 6 Message-ID: <940604.063445.0828@ze8.rz.uni-duesseldorf.de> NNTP-Posting-Host: ze8.rz.uni-duesseldorf.de Keywords: CAM, Photosynthesis, Crassulacea Hello everybody, I'm very interested in CAM plants growing in water or near by the waterfront. If somebody has got good literature tips or better own experience, especially with crassulacean plants, I would be very pleased about an answer. Thanks and so long Vicky From owner-photosynthesis@net.bio.net Sun Jul 03 23:00:00 1994 Path: biosci!agate!howland.reston.ans.net!EU.net!Austria.EU.net!newsfeed.ACO.net!swidir.switch.ch!scsing.switch.ch!news.dfn.de!rrz.uni-koeln.de!RRZ.Uni-Koeln.DE!news.rz.uni-duesseldorf.de!ze8.rz.uni-duesseldorf.de!glebe1 From: glebe1@ze8.rz.uni-duesseldorf.de Newsgroups: bionet.photosynthesis Subject: RE 2nd part Roberto Suarez Date: Mon, 4 Jul 94 08:29:27 +0100 Organization: Heinrich-Heine-Universitaet Duesseldorf, Germany Lines: 8 Message-ID: <940604.082927.0924@ze8.rz.uni-duesseldorf.de> NNTP-Posting-Host: ze8.rz.uni-duesseldorf.de Keywords: a Hello Roberto, it's me again, Vicky. I just posted your letter before I was ready. I also found a spelling mistake, it is crassula aquatica. Well, I hope I could help you a little bit and would be pleased about an answer. So long and good luck Yours Vicky From owner-photosynthesis@net.bio.net Sun Jul 03 23:00:00 1994 Path: biosci!galaxy.ucr.edu!ihnp4.ucsd.edu!usc!howland.reston.ans.net!EU.net!Germany.EU.net!news.dfn.de!news.dfn.de!rrz.uni-koeln.de!RRZ.Uni-Koeln.DE!news.rz.uni-duesseldorf.de!ze8.rz.uni-duesseldorf.de!glebe1 From: glebe1@ze8.rz.uni-duesseldorf.de Newsgroups: bionet.photosynthesis Subject: RE Roberto J. R. Suarez Date: Mon, 4 Jul 94 07:37:24 +0100 Organization: Heinrich-Heine-Universitaet Duesseldorf, Germany Lines: 13 Message-ID: <940604.073724.0828@ze8.rz.uni-duesseldorf.de> NNTP-Posting-Host: ze8.rz.uni-duesseldorf.de Keywords: Problem with work Hello Roberto, my name is Vicky an I'm writing from D}sseldorf Germany. I've read your message and the first idea was to work with a protoplasten cell culture. Special recipes you can find in the book of Seitz and Alferman 'Zellkulturen'. It is a Praktikumsbuch written in german. If you could not work in that language try it with journal articles. There are plenty of articles dealing with the problem of cell cultures in special magazines. Here also Alferman and Petersen are authors with a great experience. If you do not find anything I can have a look in D}sseldorf. But perhaps you can help me too. I'm working with crassula aquatixa, a CAM plant growing in lakes or near by the waterfront. So some questions bother me in a special way. First why do I find the CAM pathway of photosynthesis and second does it change under various climatic conditions? From owner-photosynthesis@net.bio.net Mon Jul 04 23:00:00 1994 Path: biosci!agate!doc.ic.ac.uk!uknet!daresbury!not-for-mail From: PAPAGEORGIOU GEORGIOS Newsgroups: bionet.photosynthesis Subject: STAFF OPENINGS AT NRC DEMOKRITOS Date: 5 Jul 1994 08:25:21 +0100 Lines: 50 Sender: daemon@mserv1.dl.ac.uk Distribution: bionet Message-ID: <2vb1t1$ggo@mserv1.dl.ac.uk> X-Char-Esc: 29 X-Charset: ELOT_928 Original-To: photosyn@dl.AC.UK *** ANNOUNCEMENT *** From the Institute of Biology NRC Demokritos, Athens, Greece 153 10 We would like to bring to the attention of Greek biological researchers the recently announced staff openings at the Institute of Biology of the National Research Center Demokritos. 1. One research position (Level C) for a biologist-geneticist specializing in the genotoxicity of environmental chemical polutants. 2. One research position (Level C) for a biochemist or molecular biologist specializing in photosynthesis. 3. One research position (Level C) for a molecular biologist specializing in radiation-induced carcinogenic mutations. 4. One research position (Level C) for a theoretical biologist specializing in computer-aided elucidation of macromolecular structure and of biological function. Initial Level C appointments are for three years. After that staffers are eligible for promotion to the tenured Level B. Interested qualified persons must submit a full application, plus supporting documents, not later than August 31, 1994 to: National Research Center Demokritos Administrative Directorate Athens, Greece 153 10 Tel: (301) 653 2649 / Fax: (301) 651 2172 Please note: Staff openings have been announced also for other institutes of NRC Demokritos: PHYSICAL CHEMISTRY, MATERIALS SCIENCE, MICROELECTRONICS, INFORMATICS, NUCLEAR TECHNOLOGY & RADIATION PROTECTION, RADIOISOTOPES & RADIODIAGNOSTIC PRODUCTS, as well as for the SUPERCOMPUTING CENTER. A second wave of staff openings will be announced soon. Please address relevant questions to the address given above. Dr. George C. Papageorgiou, Director NRC Demokritos / Institute of Biology Athens, Greece Tel: (301) 652 2018 / Fax: (301) 651 1767 Internet: gcpap@cyclades.nrcps.ariadne -t.gr From owner-photosynthesis@net.bio.net Mon Jul 04 23:00:00 1994 Path: biosci!agate!howland.reston.ans.net!EU.net!Germany.EU.net!nntp.gmd.de!dearn!barilvm!vms.huji.ac.il!marder.agri.huji.ac.il!MARDER Newsgroups: bionet.photosynthesis Subject: Re: Where are the contents? Message-ID: From: MARDER@agri.huji.ac.il (Jonathan B. Marder) Date: Tue, 5 Jul 1994 05:49:03 GMT References: <2v97cfINNs7a@s-crim1.dl.ac.uk> Distribution: bionet,world Organization: The Hebrew University of Jerusalem Nntp-Posting-Host: marder.agri.huji.ac.il X-Newsreader: Trumpet for Windows İVersion 1.0 Rev B¨ Lines: 34 In article <2v97cfINNs7a@s-crim1.dl.ac.uk> mbrgw@s-crim1.dl.ac.uk (R.G. Walters) writes: >Subject: Where are the contents? >From: mbrgw@s-crim1.dl.ac.uk (R.G. Walters) >Date: 4 Jul 1994 15:46:39 +0100 >Once upon a time, Jonathan Marder produced a very useful, valuable and >appreciated list of photosynthesis-friendly journal contents. I have been >watching out for these journals in bionet.journals.contents, but to no >avail. >Anyone know where they are to be found? I HATE going to the library, only >to find that there's nothing of immediate relevance. İour library is in a >dark, dank hole reminiscent of the Black Hole of Calcutta.¨ ALL the past tables of contents are archived on the BIOSCI node at net.bio.net. One of the easiest ways to search is to use *gopher* (widely available on networked mainframes and PC's) to contact net.bio.net and to select the appropriate search item from the menu which appears. If you have a World-Wide-Client (e.g. NCSA Mosaic) you can also use this instead (URL is gopher://net.bio.net). The above options only exist if you have full internet connectivity. However, there is also a way of performing searches via e-mail. Send the command HELP in email to WAISMAIL@NET.BIO.NET for details (if anyone has experience with this, some brief instructions posted in this newsgroup would be appreciated). Happy networking! __ Jonathan B. Marder ' Department of Agricultural Botany | Internet: MARDER@agri.huji.ac.il The Hebrew University of Jerusalem | /\/ Bitnet: MARDER@HUJIAGRI Faculty of Agriculture |/ \ Phone: (08 or +9728) 481918 From owner-photosynthesis@net.bio.net Mon Jul 11 23:00:00 1994 Path: biosci!MOLBIO.CBS.UMN.EDU!barry From: barry@MOLBIO.CBS.UMN.EDU ("Bridget Barry") Newsgroups: bionet.photosynthesis Subject: postdoc position available Date: 12 Jul 1994 10:13:54 -0700 Organization: BIOSCI International Newsgroups for Molecular Biology Lines: 7 Sender: daemon@net.bio.net Distribution: world Message-ID: <9407121713.AA27253@molbio.cbs.umn.edu> NNTP-Posting-Host: net.bio.net A postdoctoral position will be available in my laboratory in the fall of 1994. Our research involves the use of difference infrared and EPR spectroscopies to study the mechanism of electron transfer in photosystem II. See MacDonald, Bixby, and Barry 1993 PNAS 90, 11024. Please send a curriculum vitae and three letters of recommendation to: Dr. Bridgette A. Barry, Department of Biochemistry, 140 Gortner Lab., University of Minnesota, St. Paul, 55108. Fax: 612-625-5780. email: barry@molbio.cbs.umn.edu From owner-photosynthesis@net.bio.net Tue Jul 12 23:00:00 1994 Path: biosci!agate!cat.cis.Brown.EDU!biomed-jww-242.biomed.brown.edu!user From: sib@brown.edu (Sam Beale) Newsgroups: bionet.photosynthesis Subject: Re: HELP: chlorophyll in mosses Date: 13 Jul 1994 18:25:59 GMT Organization: Brown University Lines: 49 Message-ID: References: <3010ge$9cp@nof.abdn.ac.uk> NNTP-Posting-Host: biomed-jww-242.biomed.brown.edu In article <3010ge$9cp@nof.abdn.ac.uk>, bot133@nof.abdn.ac.uk (j.kerslake) wrote: > HI... > > Could anyone please help with the following question: > > Is biosynthesis of chlorophylls and carotenoids light - dependent in > bryophytes (particularly mosses) in the same way as it is in angiosperms? > > If so, which wavelengths are required? > > Any references? > > (this is for a friend who is studying mosses under snowbeds) > > Thanks for any help..... > > Jim (for Clare). > > bot133@abdn.ac.uk Chlorophyll synthesis in mosses is not dependent on light. This subject has not been studied in mosses for a very long time. It has been known for well over a century that gymnosperms can form chlorophyll in the absence of light. There are also several inderect references to light-independent chlorophyll synthesis in other "nonflowering plants". As for mosses in particular, the earliest reference that I could find for light-independent chlorophyll synthesis is Schimper, A. F. W. (1885) Untersuchungen u(e)ber die Chlorophyllko(e)per und die inhen homologen Gebilde. Jahrbuch fu(e)r wissenshaften Botanik XVI, 1-247. The mention of mosses occurs on pp 159-161 of this lengthy article. To bring things up to date, light-independent chlorophyll synthesis is now known to be associated with several nuclear genes as well as with three chloroplast genes, chlB, chlL, and chlN. These chloroplast genes (or homologs thereof) are present in cyanobacteria, photosynthetic bacteria, green algae, "lower" plants including the liverwart Marchantia polymorpha, and gymnosperms, but not in the plastids of any of the angiosperms whose chloroplast genomes have been completely sequrenced. I don't believe mosses have been examined for the presence of these genes. I would be inclined to conclude that angiosperms can not synthesize chlorophyll in the dark, notwithstanding occasional reports to the contrary. For a fairly recent paper on these chl genes, see Li, J., Goldschmidt-Clermont, M., and Timko, M. P. (1993) Chloroplast-encoded chlB is required for light-independent protochlorophyllide reductase activity in Chlamydomonas reinhardtii. The Plant Cell 5, 1817-1829. I hope this helps. From owner-photosynthesis@net.bio.net Tue Jul 12 23:00:00 1994 Path: biosci!agate!howland.reston.ans.net!pipex!uknet!strath-cs!st-and!Aberdeen!bot133 From: bot133@nof.abdn.ac.uk (j.kerslake) Newsgroups: bionet.photosynthesis Subject: HELP: chlorophyll in mosses Date: 13 Jul 1994 15:16:30 GMT Organization: University of Aberdeen, Scotland Lines: 19 Message-ID: <3010ge$9cp@nof.abdn.ac.uk> NNTP-Posting-Host: bio.if2.abdn.ac.uk X-Newsreader: TIN [version 1.2 PL2] HI... Could anyone please help with the following question: Is biosynthesis of chlorophylls and carotenoids light - dependent in bryophytes (particularly mosses) in the same way as it is in angiosperms? If so, which wavelengths are required? Any references? (this is for a friend who is studying mosses under snowbeds) Thanks for any help..... Jim (for Clare). bot133@abdn.ac.uk From owner-photosynthesis@net.bio.net Tue Jul 12 23:00:00 1994 Path: biosci!agate!howland.reston.ans.net!pipex!uknet!daresbury!not-for-mail From: photosyn@prfdec.natur.cuni.cz (Doc.RNDr. Danuse Sofrova CSc.) Newsgroups: bionet.photosynthesis Subject: PS II stability Date: 13 Jul 1994 12:42:42 +0100 Lines: 6 Sender: daemon@mserv1.dl.ac.uk Distribution: bionet Message-ID: <300jvi$pqp@mserv1.dl.ac.uk> Original-To: photosyn@dl.ac.uk Dear colleagues, Does anybody have any experience with the stability of PSII from higher plants and cyanobacteria (including the thermophilic ones) in the room temperature? How long is the herbicides affinity more or less stable under such conditions? Thank you in advance Tomas Kucera (PHOTOSYN@PRFDEC.NATUR.CUNI.CZ) From owner-photosynthesis@net.bio.net Wed Jul 13 23:00:00 1994 Path: biosci!ASU.EDU!Larry.Orr From: Larry.Orr@ASU.EDU Newsgroups: bionet.photosynthesis Subject: 4th Western Photosynthesis Conference Date: 14 Jul 1994 13:27:04 -0700 Organization: BIOSCI International Newsgroups for Molecular Biology Lines: 21 Sender: daemon@net.bio.net Distribution: world Message-ID: <199407142027.NAA01239@net.bio.net> NNTP-Posting-Host: net.bio.net The Fourth Western Photosynthesis Conference Tuesday Jan 3rd - Friday Jan 6th, 1995 Asilomar Conference Center, on the Monterey Peninsula in California. The Fourth Western Photosynthesis conference welcomes participation by researchers in all areas of photosynthesis including: reaction center structure and function; light harvesting systems; molecular biology, gene expression, biogenesis; carbon metabolism; physiology; eco-physiology. The approximate cost will be $220 (shared occupancy), $190 for students, which includes 3 nights accommodation and meals. For more information, and to be placed on the mailing list for future announcements, contact Larry Orr (602 965-1963); Larry.Orr@ASU.edu or Andy Webber (602-965-8725; ATANW@ACVAX.INRE.ASU.EDU). All attendees of the 2nd and 3rd Western Conference will automatically be mailed materials. From owner-photosynthesis@net.bio.net Wed Jul 13 23:00:00 1994 Path: biosci!TAUNIVM.TAU.AC.IL!VWZVI%VOLCANI.bitnet From: VWZVI%VOLCANI.bitnet@TAUNIVM.TAU.AC.IL Newsgroups: bionet.photosynthesis Subject: change of address Date: 14 Jul 1994 09:00:27 -0700 Organization: BIOSCI International Newsgroups for Molecular Biology Lines: 2 Sender: daemon@net.bio.net Distribution: world Message-ID: <199407141600.JAA16786@net.bio.net> NNTP-Posting-Host: net.bio.net Please send all informations to VWHEUER@VOLCANI instead of VWZVI@VOLCANI. The previous ID was changed. Thanks, Bruria Heuer. From owner-photosynthesis@net.bio.net Wed Jul 13 23:00:00 1994 Path: biosci!agate!howland.reston.ans.net!swrinde!pipex!doc.ic.ac.uk!daresbury!not-for-mail From: matthieu@nat.vu.nl (Matthieu Visser) Newsgroups: bionet.photosynthesis Subject: Boron uptake in plants Date: 14 Jul 1994 15:51:37 +0100 Lines: 16 Sender: daemon@mserv1.dl.ac.uk Distribution: bionet Message-ID: <303jdp$hr0@mserv1.dl.ac.uk> Original-To: photosyn@dl.ac.uk Dear netters, I promised someone to put the following question on this net: Does anyone know about the mechanism of Boron uptake in plants, or anything else concerning the chemistry of Boron in plants? It seems to be known that Boron is taken up (I guess in tiny amounts) by plants, but this is where all information of the person that I ask this question for ends. I will therefore be glad to see any information. Matthieu Visser biophysics Vrije Universiteit Amsterdam Holland From owner-photosynthesis@net.bio.net Thu Jul 14 23:00:00 1994 Path: biosci!UNIXG.UBC.CA!goetze From: goetze@UNIXG.UBC.CA (Darren Goetze) Newsgroups: bionet.photosynthesis Subject: Re: Boron uptake in plants Date: 15 Jul 1994 10:35:11 -0700 Organization: BIOSCI International Newsgroups for Molecular Biology Lines: 18 Sender: daemon@net.bio.net Distribution: world Message-ID: References: <303jdp$hr0@mserv1.dl.ac.uk> NNTP-Posting-Host: net.bio.net dear matthieu it is related to me that info on boron can be found in A.D.M. Glass' book Plant Nutrition. a chemist in our dept further informs me that boron is suspected to act similar to/ perhaps replace silicon in its role in diatoms' shells. apparently there may be some role in the cell formation of higher plants as well. hope this helps darren goetze ================== dept botany univ british columbia vancouver bc canada v6t 1z4 From owner-photosynthesis@net.bio.net Fri Jul 15 23:00:00 1994 Path: biosci!agate!howland.reston.ans.net!pipex!warwick!news.dcs.warwick.ac.uk!str-ccsun!strath-cs!st-and!Aberdeen!bot133 From: bot133@nof.abdn.ac.uk (j.kerslake) Newsgroups: bionet.photosynthesis Subject: HELP: chlorophyll in mosses Date: 16 Jul 1994 11:25:21 GMT Organization: University of Aberdeen, Scotland Lines: 54 Message-ID: <308g31$2o7@nof.abdn.ac.uk> NNTP-Posting-Host: bio.if2.abdn.ac.uk X-Newsreader: TIN [version 1.2 PL2] From Aberdeen!st-and!strath-cs!bnr.co.uk!pipex!doc.ic.ac.uk!daresbury!bioftp.unibas.ch!citi2.fr!jussieu.fr!univ-lyon1.fr!swidir.switch.ch!newsfeed.ACO.net!Austria.EU.net!EU.net!howland.reston.ans.net!agate!cat.cis.Brown.EDU!biomed-jww-242.biomed.brown.edu!user Sat Jul 16 12:17:46 1994 Path: Aberdeen!st-and!strath-cs!bnr.co.uk!pipex!doc.ic.ac.uk!daresbury!bioftp.unibas.ch!citi2.fr!jussieu.fr!univ-lyon1.fr!swidir.switch.ch!newsfeed.ACO.net!Austria.EU.net!EU.net!howland.reston.ans.net!agate!cat.cis.Brown.EDU!biomed-jww-242.biomed.brown.edu!user From: sib@brown.edu (Sam Beale) Newsgroups: bionet.photosynthesis Subject: Re: HELP: chlorophyll in mosses Date: 13 Jul 1994 18:25:59 GMT Organization: Brown University Lines: 49 Message-ID: References: <3010ge$9cp@nof.abdn.ac.uk> NNTP-Posting-Host: biomed-jww-242.biomed.brown.edu In article <3010ge$9cp@nof.abdn.ac.uk>, bot133@nof.abdn.ac.uk (j.kerslake) wrote: > HI... > > Could anyone please help with the following question: > > Is biosynthesis of chlorophylls and carotenoids light - dependent in > bryophytes (particularly mosses) in the same way as it is in angiosperms? > > If so, which wavelengths are required? > > Any references? > > (this is for a friend who is studying mosses under snowbeds) > > Thanks for any help..... > > Jim (for Clare). > > bot133@abdn.ac.uk >Chlorophyll synthesis in mosses is not dependent on light. This subject >has not been studied in mosses for a very long time. It has been known >for well over a century that gymnosperms can form chlorophyll in the >.absence of light. . . . >For a >fairly recent paper on these chl genes, see Li, J., Goldschmidt-Clermont, >M., and Timko, M. P. (1993) Chloroplast-encoded chlB is required for >light-independent protochlorophyllide reductase activity in Chlamydomonas >reinhardtii. The Plant Cell 5, 1817-1829. > I hope this helps. Certainly does ... Thanks a lot! Jim / Clare From owner-photosynthesis@net.bio.net Sun Jul 17 23:00:00 1994 Path: biosci!agate!howland.reston.ans.net!swrinde!pipex!doc.ic.ac.uk!news.sys.uea.ac.uk!cpca3.uea.ac.uk!cpcw7.uea.ac.uk!c207 From: c207@cpcw7.uea.ac.uk Newsgroups: bionet.photosynthesis Subject: C-phycocyanin trimer Date: 18 Jul 1994 13:03:55 GMT Organization: UEA Lines: 13 Sender: c207@cpcw7.uea.ac.uk (Andrey Demidov#) Distribution: world Message-ID: <30dujr$2g1@cpca3.uea.ac.uk> Reply-To: c207@cpcw7.uea.ac.uk NNTP-Posting-Host: cpcw7.uea.ac.uk Keywords: C-PC, angles, trimer, crystal, solution In my current research I work on the problem of determination the fluorescence polarization degree of C-phycocyanin trimers, hexamers etc. I would appreciate any information about absorption and fluorescence spectra of C-PC chromophores, and especially about the chromophore orientation angles. The major question is: Does the angles of chro- mophore orientations in C-PC trimers the same in the cristals and in the solution? Sincerely aad From owner-photosynthesis@net.bio.net Tue Jul 19 23:00:00 1994 Path: biosci!agate!howland.reston.ans.net!EU.net!uknet!daresbury!not-for-mail From: Newsgroups: bionet.photosynthesis Subject: PSU Size in Maize References Date: 20 Jul 1994 17:17:16 +0100 Lines: 22 Sender: daemon@mserv1.dl.ac.uk Distribution: bionet Message-ID: <30jimc$fgh@mserv1.dl.ac.uk> Original-To: bionet-news@dl.ac.uk, photosyn@net.bionet.edu, photosyn@dl.ac.uk Dear friends: Jack VanRensen and I are searching information on the size of the photosynthetic unit in maize leaves and/or thylakoids (well, there are mesophyll and bundle-sheath thylakoids;I assume most are mesophyll). We are interested in knowing the number of total and number of "active" PS II reaction centers to total number of chlorophylls present. There may be measurements on herbicide-binding sites, number of Qa molecules, or whatever.If you are aware of any references on maize, please send them to us.We know the paper of Lin and Whitmarsh on peas (published in Plant Physiology).It is a good paper for peas grown at different light intensities. WE need this information by July 26 or 27 when I leave Holland. Hope someone out there can help.Thanks. Govindjee GOV@UIUC.EDU Jack.VanRensen@ALGEM.PF.WAU.NL From owner-photosynthesis@net.bio.net Wed Jul 20 23:00:00 1994 Path: biosci!galaxy.ucr.edu!ihnp4.ucsd.edu!swrinde!howland.reston.ans.net!newsserver.jvnc.net!netnews.upenn.edu!gray.bio.upenn.edu!user From: mrothenb@atgenome.bio.upenn.edu (Madge Rothenberg) Newsgroups: bionet.photosynthesis Subject: chlorophyll extraction Followup-To: bionet.photosynthesis Date: Thu, 21 Jul 1994 13:18:54 +0300 Organization: U. Penn Biology Lines: 5 Message-ID: NNTP-Posting-Host: gray.bio.upenn.edu Hi! Has anyone heard of an alternative method for extracting chlorophyll from leaves besides acetone/methanol extraction? I was given a vague reference for a method involving dimethylformamide which does not require grinding of the tissue. One author may be Moran and the article may have been published around 1988. Can anyone give me a more specific reference? From owner-photosynthesis@net.bio.net Thu Jul 21 23:00:00 1994 Path: biosci!galaxy.ucr.edu!ihnp4.ucsd.edu!usc!cs.utexas.edu!howland.reston.ans.net!ee.und.ac.za!nntp.und.ac.za!quagga.ru.ac.za!hippo.ru.ac.za!miml From: miml@hippo.ru.ac.za (Malcolme Logie) Newsgroups: bionet.photosynthesis Subject: Re: chlorophyll extraction Date: 22 Jul 1994 16:33:52 +0200 Organization: Rhodes University Computing Services Lines: 15 Message-ID: References: NNTP-Posting-Host: hippo.ru.ac.za X-Newsreader: NN version 6.5.0 #2 (NOV) Try get the ref of Litchtenthaler, 1987, Chlorophylls and carotenoids: Pigments of photosyntheticv biomembranes, Methods in Enzymology, Vol 148, pg 350-382. There are however a few typographical errors in the manuscript in the two tables inwhich the formulae are presented. Note that for total chlorophyll a and b as well as for total pheaophytin a and b there should be + not -. Check it out .... I have previously cleared there typos with Helmut Malcolme -- Malcolme Logie Internet: miml@hippo.ru.ac.za From owner-photosynthesis@net.bio.net Thu Jul 21 23:00:00 1994 Path: biosci!agate!howland.reston.ans.net!pipex!doc.ic.ac.uk!daresbury!daresbury!not-for-mail From: mbrgw@s-crim1.dl.ac.uk (R.G. Walters) Newsgroups: bionet.photosynthesis Subject: Re: chlorophyll extraction Date: 22 Jul 1994 16:08:03 +0100 Organization: Daresbury Lab., Warrington, U.K. Lines: 7 Distribution: bionet Message-ID: <30oncjINN864@s-crim1.dl.ac.uk> References: NNTP-Posting-Host: s-crim1.dl.ac.uk In article miml@hippo.ru.ac.za (Malcolme Logie) writes: >Try get the ref of Litchtenthaler, 1987, Chlorophylls and carotenoids: >Pigments of photosyntheticv biomembranes, Methods in Enzymology, Vol >148, pg 350-382. This is not the best. Porra et al (from a couple of years ago, I forget where), is now the standard set of equations for chl determinations. From owner-photosynthesis@net.bio.net Thu Jul 21 23:00:00 1994 Path: biosci!QMS1.LIFE.UIUC.EDU!sabine_metzger From: sabine_metzger@QMS1.LIFE.UIUC.EDU ("Sabine Metzger") Newsgroups: bionet.photosynthesis Subject: Re: chlorophyll extraction Date: 22 Jul 1994 08:46:30 -0700 Organization: BIOSCI International Newsgroups for Molecular Biology Lines: 22 Sender: daemon@net.bio.net Distribution: world Message-ID: NNTP-Posting-Host: net.bio.net Mail*Link(r) SMTP RE>chlorophyll extraction In article miml@hippo.ru.ac.za (Malcolme Logie) writes: >Try get the ref of Litchtenthaler, 1987, Chlorophylls and carotenoids: >Pigments of photosyntheticv biomembranes, Methods in Enzymology, Vol >148, pg 350-382. This is not the best. Porra et al (from a couple of years ago, I forget where), is now the standard set of equations for chl determinations. ---> the Porra article is from 1989: Biochimica et Biophysica Acta 975, pp. 384-394 'Determination of accurate extinction coefficients and simultaneous equations for assaying chlorophylls a and b extracted with four diffrent solvents: verification of the concentration of chlorphyll standards by atmoic absorption spectroscopy ' by R.J.Porra, W.A. Thompson and P.E. Kriedemann I hope that information will help. Sabine From owner-photosynthesis@net.bio.net Wed Jul 27 23:00:00 1994 Path: biosci!agate!howland.reston.ans.net!pipex!doc.ic.ac.uk!daresbury!not-for-mail From: Cyanobacterial Workshop Newsgroups: bionet.photosynthesis Subject: Third European Workshop on the Molecular Biology of Cyanobacteria Date: 28 Jul 1994 12:01:59 +0100 Lines: 90 Sender: lpddist@mserv1.dl.ac.uk Distribution: bionet Message-ID: <318377$lng@mserv1.dl.ac.uk> Original-To: photosyn@dl.ac.uk FIRST CIRCULAR Third European Workshop on the Molecular Biology of Cyanobacteria Sevilla, Spain, May 12-14, 1995 The objective of the series of European Workshops on the Molecular Biology of Cyanobacteria is to provide a forum for scientists working on cyanobacteria to present and discuss their work, which is hoped to stimulate co-operation between laboratories. It is also a main goal of this series of workshops that younger scientists actively participate in the meetings. Molecular biologists from european countries are expected to attend the workshop at Sevilla, but researchers with interests in cyanobacteria in areas other than molecular biology, as well as cyanobacteriologists from anywhere in the world, would also be very welcome. Organizing committee: P. Candau, F. J. Florencio, E. Flores, A. Herrero, and A. Vioque, all of them from the Instituto de Bioquimica Vegetal y Fotosintesis, Universidad de Sevilla and Consejo Superior de Investigaciones Cientificas, Spain. The workshop will be held in Sevilla at the historical building where the University of Sevilla headquarters are located, close to the historical center of the town, and will take place from May 12-14 (Friday to Sunday), 1995. Arrival of participants at Sevilla should be on May 11th, since the sessions will start on May 12th at 9 a.m. The expected approximate cost including registration, accommodation (from May 11-14), and meals (half-board) will be about 45,000 Spanish pesetas. Accommodation will be at a Hotel within walking distance from the University. The workshop will consist of a mixture of full lectures, short presentations, round table discussions and posters. Researchers interested in attending the workshop are kindly asked to complete the attached form and return it (preferably by e-mail) before September 30th, 1994. The second circular with detailed information will be mailed before the end of October to those returning the preregistration form. Workshop organizing committee address: Cyanobacterial Workshop Instituto de Bioquimica Vegetal y Fotosintesis Universidad de Sevilla-CSIC Facultad de Biologia Apartado 1113 E-41080 Sevilla, SPAIN Fax: +34-5-462.01.54 E-mail: CYANO@CICA.ES cut here =============================================================== PREREGISTRATION FORM Family name.................................................... First name................................Title................ Name of Institution............................................ ................................................................ Address........................................................ ................................................................ Postal code.......................Country...................... Phone.............................Fax.......................... E-mail......................................................... Do you plan to present a communication?.(circle)....YES...NO... Tentative title................................................ ................................................................ ................................................................ ................................................................ ................................................................ _ Number of accompaning persons..!_! =============================================================== From owner-photosynthesis@net.bio.net Wed Jul 27 23:00:00 1994 Path: biosci!VAXA.CIS.UWOSH.EDU!kallas From: kallas@VAXA.CIS.UWOSH.EDU (Toivo Kallas) Newsgroups: bionet.photosynthesis Subject: Postdoc announcement Date: 28 Jul 1994 15:35:45 -0700 Organization: BIOSCI International Newsgroups for Molecular Biology Lines: 29 Sender: daemon@net.bio.net Distribution: world Message-ID: <01HF8XOZN9R600BI74@vaxa.cis.uwosh.edu> NNTP-Posting-Host: net.bio.net POSTDOCTORAL RESEARCH POSITION MOLECULAR BIOLOGY/PROTEIN CHEMISTRY CONTACT: Toivo Kallas, Department of Biology and Microbiology, University of Wisconsin-Oshkosh, Oshkosh, WI 54901. (Tel) 414 424-7084. (FAX) 414 424-1101. (E-mail) Kallas@vaxa.cis.uwosh.edu RESEARCH: Overproduction, reconstitution with Fe-S centers, reconstitution with Rieske-depleted cytochrome b6f complex, and structure/function analysis of mutant forms of the Rieske Fe-S, photosynthetic electron transport protein. The project will involve strong interinstitutional collaborations and the candidate would also have the opportunity to gain teaching experience if he/she so desires. REQUIREMENTS: Experience in molecular biology, protein chemistry, and/or EPR spectroscopy is desirable. SUPPORT: Approximately $22,500 yearly (11 month appointment) for two years. SUBMIT: CV, brief description of interests, and the names, addresses, phone, FAX, and E-mail numbers of three references. START: September 1, 1994 (if possible). Please contact for further information. Toivo Kallas Department of Biology-Microbiology University of Wisconsin Oshkosh, WI 54901 phone: 414 424-7084 FAX: 414 424-1101 From owner-photosynthesis@net.bio.net Thu Jul 28 23:00:00 1994 Path: biosci!agate!usenet.ins.cwru.edu!gatech!nntp.msstate.edu!saimiri.primate.wisc.edu!news.crd.ge.com!rebecca!rpi!vccnorth30.its.rpi.edu!farrid From: farrid@vccnorth30.its.rpi.edu (Dinah Thiers Farrington) Newsgroups: bionet.photosynthesis Subject: Dragendorff's Reagent Date: 29 Jul 1994 01:19:07 GMT Organization: Rensselaer Polytechnic Institute, Troy, NY. Lines: 2 Distribution: world Message-ID: <319leb$pbb@usenet.rpi.edu> Reply-To: farrid@rpi.edu NNTP-Posting-Host: vccnorth30.its.rpi.edu Keywords: T.L.C., herbicides, paraquat I am a graduate student trying to identify some herbicidal compounds using TLC. My system uses Dragendorff's Reagent (potassium iodo bismuthate, Munier modification). I would like to hear from anyone with extensive experience using this reagent. In trying to make it following a textbook recipe, I am having trouble getting bismuth subnitrate to dissolve. I would be very glad to hear anyone's suggestions on this. Thank you.