Multi-omics analyses reveal the defense mechanisms behind the tolerance of the 'Parson Brown' sweet orange to Huanglongbing.

ABSTRACT:

Background

'Parson Brown' sweet orange is an early-maturing variety and is considered a resilient tree in the face of Huanglongbing (Citrus Greening) disease. Its ability to maintain productivity under endemic HLB conditions has demonstrated its value for growers battling this devastating disease. This study compared the metabolomic profile, transcriptomic analysis, and physiological responses of three early-maturing sweet oranges: 'Hamlin', 'Roble', and 'Parson Brown'.

Results

Healthy greenhouse-grown trees were propagated and exposed to 'Candidatus Liberibacter asiaticus' via psyllid infestation. We recorded a decrease of landed psyllids on 'Parson Brown' (20.58%) compared to 'Hamlin' (34.38%) and 'Roble' (45.04%), in addition to a lower 'Ca. L. asiaticus' titer in 'Parson

SUBMITTER: Mahmoud LM 

PROVIDER: S-EPMC12495878 | biostudies-literature | 2025 Oct

REPOSITORIES: biostudies-literature