As a plant stress hormone, jasmonic acid (JA) plays an important role in mediating the resistance of plants against mechanical stress, pest attack, and pathogenic infection. The biosynthesis of JA and the expression of JA signaling genes are activated upon pest attack. However, JA-Ile signaling can also be hijacked by pathogenic bacteria by means of released effectors that antagonize salicylic acid-mediated plant immunity. JA also plays important roles in a variety of developmental processes, including flowering, root hair development, and trichome formation. Previous studies have shown that JA mediates herbivore resistance traits in tomatoes by promoting trichome formation.
Click here for original story, The mechanism of trichome formation in response to stress-induced jasmonic acid signaling in tomatoes
Source: Phys.org