Altered brassinolide sensitivity1 Regulates Fruit Size in Association with Phytohormones Modulation in Tomato

BRs (Brassinosteroids) regulate many essential pathways related to growth, cell elongation, expansion, plant architecture, and fruit development. The potential exogenous application of BR-derivatives has been proven stimulate growth development, including quality attributes fruits, whereas its biosynthesis inhibition shown the opposite effect. In this study, BR-insensitive tomato mutants were used reveal function BR signaling in regulation development elaborate regulatory mechanism fruits. BR-signaling mutant exhibited a typical dwarf phenotype reduced vegetative size, weight. Microscopic transcriptional evaluation abs1 fruits implies that size number are responsible for phenotypic variations. Additionally, we also found altered content phytohormones, such as auxin, gibberellin, cytokinin, ethylene levels, contributed Moreover, development-specific gene expression levels downregulated plants; culminating number, layers. These findings provide insight into physio-chemical changes during response BR-insensitivity.