A bark elicitor is a substance that triggers a response in a tree, causing it to release chemical compounds that can attract or repel certain animals or insects. Some synonyms for bark elicitor could include tree stimulant, phytogenic elicitor, or plant activator. Other related terms may include plant hormones, growth regulators, or signaling molecules. These terms all describe different substances that can affect plant growth and development, as well as interactions with the environment and other organisms. Understanding the roles and effects of different compounds in plants can help researchers develop more effective strategies for managing pests, promoting plant growth, and protecting natural ecosystems.