hort.net Seasonal photo, (c) 2006 Christopher P. Lindsey, All Rights Reserved: do not copy
articles | gallery of plants | blog | tech blog | plant profiles | patents | mailing lists | top stories | links | shorturl service | tom clothier's archive0
Gallery of Plants
Tech Blog
Plant Profiles
Mailing Lists
    Search ALL lists
    Search help
    Subscription info
Top Stories
sHORTurl service
Tom Clothier's Archive
 Top Stories
Disease could hit Britain's trees hard

Ten of the best snowdrop cultivars

Plant protein database helps identify plant gene functions

Dendroclimatologists record history through trees

Potato beetle could be thwarted through gene manipulation

Hawaii expands coffee farm quarantine

Study explains flower petal loss

Unauthorized use of a plant doesn't invalidate it's patent

RSS story archive

FW: postal irradiation

  • Subject: FW: postal irradiation
  • From: Emily Orling <emily.orling@mobot.org>
  • Date: Mon, 12 Nov 2001 14:11:22 -0600 (CST)

Title: FW: postal irradiation

Arioders:  I remember the discussion on-line concerning the new postal security system effecting live plants and seeds in the mail... this site could answer some questions.  (hopefully this hasn't already been sent to the list; if so, sorry about that!)


-----Original Message-----
From: Jim Solomon
Sent: Friday, November 09, 2001 4:18 PM
Subject: FW: postal irradiation

-----Original Message-----
From: Chris Puttock [mailto:cputtock@BISHOPMUSEUM.ORG]
Sent: Friday, November 09, 2001 2:11 PM
Subject: postal irridiation


The extract at the website below provides a briefing to the effects on
research specimens and museum collection items from electron beam
irradiation of mail by the US Postal Service.


The following passage should be of particular concern to those who send DNA
samples through the mail to museums and laboratories.  Living material will
have little or no chance of survival.

"A special case is that of DNA molecules. The relatively large size of the
DNA molecule results in a high probability of it being hit by one or more
radiation particles. It is worth noting that the primary mode of radiation
induced eradication of micro-organisms is major destruction of the DNA.
Hence, irradiation at the levels intended for anthrax spore extermination
will also induce major damage to DNA in research specimens. These effects
will include fragmentation of the molecule and, through recombinations,
formation of mutations. The mutagenic properties of ionizing radiation are,
of course, well known, and result from these recombination reactions. While
a significant fraction of the original DNA of the specimen irradiated at
dose levels of 10-50 kGy may be preserved, the question, which arguably can
only be addressed on a case-by-case basis, is to what extent the research
value of the specimen is compromised, for the intended or future studies, by
the large scale destruction of the specimen's DNA, and the formation of
significant quantities of mutated varieties and of major concentrations of
fragmented DNA."

I will be interested to hear if FedEx and other commercial carriers will
also be considering radiation, which will then leave little avenue for
movement of specimens between collections.

Dr. Christopher F. Puttock
Collection Manager of Botany
Department of Natural Sciences
Bernice P. Bishop Museum
1525 Bernice Street
Honolulu HI 96817-2704
Tel: 808 848 4177   Fax: 808 847 8252

 © 1995-2015 Mallorn Computing, Inc.All Rights Reserved.
Our Privacy Statement
Other Mailing lists | Author Index | Date Index | Subject Index | Thread Index