Magnesium deficiency significantly affects Citrus yield and quality, impacting gas exchange and chlorophyll fluorescence in different parts of the plant.
The study focused on 'Xuegan' seedlings, revealing that magnesium levels were higher in deficient upper leaves compared to lower leaves, leading to more pronounced physiological changes in the lower leaves.
Results showed that the metabolism of reactive oxygen species (ROS) and methylglyoxal (MG) varied significantly between lower leaves and roots, highlighting distinct responses to magnesium deficiency in these plant parts.
Citrus are mainly grown in low pH soils with high active aluminum (Al). 'Xuegan' (Citrus sinensis (L.) Osbeck) and 'Shatian pummelo' (Citrus grandis (L.