The role of JAR1 in insect feeding response
The approach of Dr. Paul Staswick at the University of Nebraska-Lincoln is to design and carry out experiments that test a hypothesis based on his team’s or other scientists’ previous discoveries. Careful analysis of the experimental outcomes determines if the hypothesis is supported or needs refinement. This leads to the next experiment. The approach requires patience, attention to detail and creativity.
One biotic stress plants often encounter is herbivorous insects. Successful plants have mechanisms to cope with insect invasions. A series of discoveries identified jasmonic acid as a key to defense response1. This led to the following hypothesis: A plant that can chemically modify jasmonic acid can use this hormone as a signal molecule and mount a defense against feeding insects. The key was to conduct an experiment to test this hypothesis.
This lesson will focus on one set of experiments that were conducted by Scott Dworak, a graduate student who was part of Dr. Staswick’s research team. Two short videos should be viewed with this lesson. Watch the first video now by clicking on Fragrant Signals, below.
Note: This video is about 4 1/2 minutes long.