Plants cry for help when an attack can be expected

It would be interesting to see how this affects our beloved herb.
Plants cry for help when an attack can be expected

September 7th, 2012 in Biology / Plants & Animals
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Credit: Nina Fatouros
Eggs of insect pests deposited on plants trigger the production of scents by plants that affect different plant community members probably helping the plant to get rid of the pest before it becomes harmful.
These results are reported the journal PLOS ONE by researchers, of the Laboratory of Entomology of Wageningen University and the Netherlands Institute of Ecology (NIOO-KNAW).
The research team, led by Nina Fatouros, tested how parasitic wasps, natural enemies of a common cabbage pest, the large cabbage white butterfly, and gravid butterfly females respond to black mustard, a cabbage relative, emitting scents during the initial phase of herbivore attack, when eggs are laid.

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Credit: Nina Fatouros
They show that butterfly egg deposition triggers highly specific chemical and structural changes in the plant that attract different parasitic wasps attacking either butterfly eggs or caterpillars but repel egg-laying butterflies. However, egg deposition by a less common pest, the cabbage moth, does not trigger such changes. A specific plant response to butterfly egg deposition might help the plant defending itself before actual damage by hatching caterpillars starts.
More information: Plant Volatiles Induced by Herbivore Egg Deposition Affect Insects of Different Trophic Levels, Plos ONE, August 2012, Volume 7, Issue 8, e43607

Provided by Wageningen University
"Plants cry for help when an attack can be expected." September 7th, 2012. http://phys.org/news/2012-09-plants-...help-when.html

Originally Posted by PaulN'Chuck

Wow thats interesting. Makes you really think whos in charge of who, Ya kno? Do you think Plants actually scream?

I'm sure they do. Sound is caused by vibrations and I'm sure they vibrate when stressed. I wonder what frequency they're at.