Citrus greening huanglongbing (Brazilian
Candidatus Liberibacter americanus

Citrus greening huanglongbing (Brazilian (Candidatus Liberibacter americanus) is a bacterial pathogen of citrus. It was first detected in Puerto Rico in 2010.

Huanglongbing is one of the most serious diseases of citrus. The causal agent is a noncultured, sieve tube-restricted a-proteobacterium. This pathogen is vectored by Diaphorina citri, a psyllid.

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