Analysis of Soil and Micronutrients in Citrus Cultivars Co-Infected with Candiditus Liberibacter Asiactus and Xanthomanas Axonopodis
DOI:
https://doi.org/10.33866/phytopathol.036.02.1178Keywords:
Huanglongbing (HLB), Citrus Canker (CBC), Co-infection, Micronutrient dynamicsAbstract
The citrus industry, a cornerstone of global agriculture, faces significant threats from bacterial diseases, particularly Huanglongbing (HLB) and Citrus Canker (CBC). This study explores the impact of co-infection by two bacterial pathogens—Xanthomonas axonopodius, responsible for citrus canker, and Candidatus liberibacter L., the greening pathogen—on citrus plants. The co-infection adversely affects citrus health by reducing nutrient uptake from roots to shoots, which compromises fruit quality. The research aims to clarify the interaction between HLB and CBC, assess their combined effects on nutrient absorption, and suggest effective management strategies for affected orchards. The study hypothesize that co-infection may reduce the uptake of micronutrients. Citrus samples were collected and tested for co-infection using qPCR. Nutrient levels, including Zn, K, P, N, Fe, and Mn, were analyzed in soil and leaves using atomic absorption spectroscopy. Results showed a significant reduction in nutrient uptake in co-infected citrus samples compared to healthy ones, with decreased levels of essential minerals in both soil and plant tissues. Soil pH shifted from alkaline to acidic, further affecting citrus growth. These findings highlight the detrimental impact of HLB and CBC co-infection on nutrient absorption and citrus crop yield, underscoring the importance of comprehensive management approaches. Foliar sprays for micronutrient supplementation emerged as a promising strategy to address these deficiencies. This research provides practical insights for managing citrus orchards facing the challenges of HLB and CBC co-infection, offering a pathway to mitigate their effects on citrus production.References
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