Abstract
Plant hormones play crucial and basic roles in plant growth, developmental processes, and also in plant response to abiotic and biotic constraints. On the first time, plant hormones may allocate limited resources to the most serious stresses, on the second time, the crosstalk among multiple plant hormone signaling directs the balance between the plant growth and the plant defense. Various studies and investigations have reported the mechanism of crosstalk between Jasmonic Acid (JA) and other plant hormones in plant growth and stress responses. Based on these investigations, this chapter mainly reports the crosstalk between JA and other plant hormone signaling in regulating the balance between the plant growth and the defense response. The suppressor proteins JASMONATE ZIM DOMAIN PROTEIN (JAZ) and MYC2 as the key components in the crosstalk are also highlighted in the chapter. Eventually, we note that JA interacts with other hormone signaling pathways [such as Ethylene (ET), auxin, Gibberellic acid (GA), Abscisic Acid (ABA), Salicylic Acid (SA) and Brassinosteroids (BRs)] to regulate plant growth, abiotic stress tolerances, and defense resistance against pathogens.
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