[MAIPC] Potential biocontrol for more research.

[Marc Imlay]

Perilla frutescens pathogens, such as Cristuariella moricola,  as potential
biocontrol for more research. 

The research is comparably important to protect both agriculture and the
natural environment.

 

Marc Imlay, PhD, 

Chair, Natural Places Committee, Sierra Club, Maryland Chapter

Chair biological control committee, Mid-Atlantic Invasive Plant Council

 

 

 

Weed Status and Injury Perilla mint causes more cattle deaths in Tennessee
than any other toxic plant. Perilla is very poisonous to cattle and other
ruminants, as well as horses. All plant parts are toxic, especially the
flowering structures. Dried plants in hay can be toxic, but the greatest
risk is associated with consumption of fresh plant material, especially if
flowers and fruit are present. Perilla mint contains ketones that cause
acute respiratory distress syndrome in cattle (ARDS), also called panting
disease. Treatment is often ineffective. Although these plants can occur
anywhere in a pasture or feed lot, they typically favor semi-shaded
environments, and are most frequently located around farm structures, edges
of woods and along fence rows. Cases of poisoning from these weeds are a
concern during the late summer and early fall when other grasses and forages
might be in short supply and the perilla mint is flowering. Cattle will
normally not feed on these toxic weeds unless there is a shortage of other
feed. Therefore, it is crucial to have a ready supply of quality feed
available for farm animals during this time of the year
<https://extension.tennessee.edu/publications/Documents/W135.pdf>
https://extension.tennessee.edu/publications/Documents/W135.pdf

 

From: Kenney, Michael J - APHIS <michael.j.kenney at usda.gov
<mailto:michael.j.kenney at usda.gov> > 
Sent: Monday, July 29, 2019 9:02 AM
To: ialm at erols.com <mailto:ialm at erols.com> ; INVASIVES at LISTSERV.UMD.EDU
<mailto:INVASIVES at LISTSERV.UMD.EDU> 
Cc: Kenney, Michael J - APHIS <michael.j.kenney at usda.gov
<mailto:michael.j.kenney at usda.gov> >
Subject: RE: [INVASIVES] Perilla frutescens pathogens

 

Hi all:

 

I don't know much about this plant:

 

One  of my references :  Perilla frutescens.

 

Fungal pathogen-Cristuariella moricola  [imperfect fungus ] ." on Leaves in
Ill. "

Fungi  on plants and plant products in the U.S.   1999. Farr et al.  APS
press.

 

Cheers,

 

Mike Kenney [ Ph.d. ]

Containment scientist

USDA-APHIS -PPQ

RIVERDALE, MD.

 





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