Abscisic acid affects the floret numbers of inflorescence by regulating indole-3-acetic acid transport and accumulation in Lavandula angustifolia

Lavender flower essential oil had been used for a variety of therapeutic and cosmetic purposes. Previous studies mainly focused on composition extraction methods, ignoring the factors that affected production oils, such as floret number. This study aims to get deep insight into mechanism number differences. Hormone analysis showed there was positive correlation between abscisic acid (ABA) content florets, while indole-3-acetic (IAA) negatively correlated with numbers. RNA-Seq results 1 035 differentially expressed genes (DEG) can be identified, which 19 were significantly enriched in carotenoid biosynthesis pathway. Common network expression key ABA pathway metabolism related DEG IAA, especial IAA18. Exogenous IAA inhibited lavender florets genes. The might useful better understanding molecular