Exogenous glomalin boosts kumquat seedling growth by enhancing soil structure and biochemical activity

These findings unequivocally establish that exogenous EE-GRSP can effectively promote citrus growth primarily by fostering robust synergistic soil-plant feedbacks through concomitant improvements in both soil physical structure (e.g., aggregate stability) and biochemical processes (e.g., enzyme activity and carbon sequestration). This study advances our mechanistic understanding of glomalin-mediated soil-plant interactions and highlights EE-GRSP as a promising and valuable soil amendment for sustainable citrus cultivation, urging further validation under diverse field conditions.