Fw: viruses in Hippeastrum and everything else.

Adam Fikso adam14113@ameritech.net
Sun, 19 Nov 2006 14:21:32 PST
----- Original Message ----- 
From: "Annalee" <pasogal@ameritech.net>
To: <pbs@lists.ibiblio.org>
Sent: Sunday, November 19, 2006 1:13 PM
Subject: viruses in Hippeastrum and everything else.

> The ONLY thing I have found useful in controlling viruses in bulbous or 
> other plants is good cultural conditions (meaning those which the plant 
> likes and which enable it to thrive)  and an aspirin (acetylsalicylic 
> acid) drench from time to time.  A good working solution is 2--325 mg. 
> tablets per gallon of water.  This will not kill the virus since viruses 
> are not killable, but it does trigger the plants immune response and may 
> suppress the virus's effects.  It also works well fairly on Erwinia 
> carotovora, but on Erwinia, the infected parts of the "bulb", tuber, or 
> rhizome need to be cut off, sterilized with, say, a chlorine-releasing 
> drying agent or scouring powder such as  Comet.
> This treatment will also enable Arisaemas to resist fungal infections that 
> develop from infection under moist conditions where there is insufficient 
> air movement.  The tuber will re-emerge the folowing year without  the 
> fungus
> The reason that viruses cannot be "killed" is because technically, they 
> are not "alive" in the usual sense.  They come "alive" only when they have 
> infected a host.  The tobacco mosaic virus, for example,  can survive 
> boiling water for hours, alcohol soaks,  and can only be "killed" by being 
> "taken apart" , as it were, actually lysed    to its molecular parts which 
> can only be done by killing the host--not a usually acceptable method of 
> treastment.  Good if one is willing to destroy the entire population.  A 
> bit more technical stuff: The difference between being dissolved, and 
> lysed is that after being dissolved, a compound or a biological entity can 
> be reconstituted by drying, and   evaporating the solvent.  With lysing, 
> this does not occur, the molecular structure has changed forever and 
> cannot be reconstituted.  The same is true for human viral infections,m 
> i.e., chickenpox, one "gets over "  the disease, but it can recur years 
> later in the form of "shingles".  Which is very painful and can be lethal. 

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