This talk will attempt to answer three questions: 1) Do plants communicate about their risk of herbivory? 2) Do plants have individual personalities with respect to communication? 3) Why does this matter?

Biologists have known for a long time that plants sense their environments and respond accordingly, i.e., they exhibit “behavior.” Whether they communicate with each other with respect to their risk of being attacked by insect herbivores has been more controversial. We have found that sagebrush plants that are attacked by insects or mechanically damaged emit volatiles. Neighboring sagebrush plants sense these volatiles and increase their resistance to herbivory. Volatiles are required for this eavesdropping between individuals and between branches on a single individual. In the field, this eavesdropping increased the survival of seedlings and the production of flowers and new shoots for older plants. Individual plants showed relatively stable tendencies in their emission of active cues and also in their responses to cues. In other words, they showed tendencies that were consistent over time and also consistent across different situations, i.e., they exhibited personalities. For example, individuals that were good receivers were also good emitters. Recognizing that plants communicate via volatile cues expands our view of the sophisticated behaviors that plants are capable of. It may also allow us to design more effective pest management strategies. Recognizing that plants have individual personalities forces us to think about their past experiences and to consider correlations between behaviors.

Zoom link for those unable to attend in person:

https://ucla.zoom.us/j/94308730584?pwd=0YGsaJFEdLd5cMsOhTh465nwJubz9o.1

Meeting ID: 943 0873 0584

Passcode: 308291