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Salicylic acid (SA) is a phytohormone integral to plant defense mechanisms, particularly against biotrophic and semibiotrophic pathogens. It is synthesized from salicin, found in willow and poplar, and has historical significance as the precursor to aspirin. SA functions in basal defense, amplifying local immune responses, and establishing systemic acquired resistance. Its biosynthesis involves complex signaling pathways that are crucial for plant immunity, and it serves as an elicitor for plant disease responses. The study of SA has expanded with modern technologies, highlighting its role in both biotic and abiotic stress responses.
仅用于科研。不用于诊断过程。未经明确授权不得转售。