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Lin said her research used only one late
blight-resistant variety of potato because it
is the only commercially available variety
that has both tuber and foliar resistance.
Pappu said further research is needed
to see exactly how these pathogens
collaborate at the molecular level and how
the host's genetic mechanisms affect the
pathogens.
"This is much more complicated
research," he said. "We normally study
how a plant interacts with a single
pathogen. Now we have to find how two
very different pathogens interact with
each other and the plant. Lin's findings
underscore the need to keep in mind the
dynamic nature of the pathogens and their
interaction with their hosts."
The project was funded by the
Washington State Potato Commission.
PG
Damage done. This potato field in Washington State
shows signs of late blight infection. Researchers at
WSU have found that potato virus S breaks down late
blight resistance.
This article was published with
permission from Washington State
University
PVS is commonly
found around
the world and
historically hasn't
been a concern
for growers in
the U.S. Now it's
demanding more
attention because
of its role in
making late blight
more severe.
