[Arabidopsis] Help with dying plants!

James Stark via arab-gen%40net.bio.net (by james.stark from umb.edu)
Tue Jan 13 12:42:57 EST 2015

Could it be Impatiens Necrotic Spot Virus, which is transmitted by 
thrips?  It would seem that your pesticide applications and sanitation 
measures would have eliminated any thrips problem, but the symptoms are 
consistent with INSV.  See 
for images.

Jim Stark
UMass Boston

On 1/13/2015 12:04 PM, arab-gen-request from oat.bio.indiana.edu wrote:
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>     1. Help with dying plants! (Pablo JENIK)
> ----------------------------------------------------------------------
> Message: 1
> Date: Mon, 12 Jan 2015 11:24:18 -0500
> From: Pablo JENIK <pablojenik from aya.yale.edu>
> Subject: [Arabidopsis] Help with dying plants!
> To: arab-gen from magpie.bio.indiana.edu
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> Dear colleagues,
> Most of our Arabidopsis have been dying, and I was hoping the community
> could help us figure out why, and a solution.
> We have been growing our plants in Convirons, on MetroMix 360 and slow
> release fertilizer for years without problems (other than thrips). Last
> semester our plants started dying in a pattern I had not seen before. At
> about two weeks or so the leaves start to turn yellow, and then the plants
> turn white and dry and dead. The plants that survive to flowering will also
> turn pale and wilt. It happens at random positions in a flat, but it
> eventually spreads to all the plants in the flat. At first we thought it
> was thrips, because we've had them in the past (although I had never seen
> thrips give symptoms before flowering). But we have been on a rotation of
> pesticides that had been working well. Then we changed to a new bag of
> soil. Then we threw away all the plants, cleaned the Convirons well, and
> left them empty for at least two-three weeks. No matter, our newest batch
> of flats is showing the same symptoms!
> Any help will be really appreciated. We are getting desperate, as research
> is stuck without the plants.
> Thanks to all,
> Pablo

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