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Citrus Huanglongbing: What Can We Learn from Pathogen Effectors

Wenbo Ma: University of California, Riverside

<div>The citrus industry is facing an unprecedented challenge from Huanglongbing (HLB). Vectored by phloem-feeding insects, the HLB-associated bacterium Candidatus Liberibacter asiaticus (CLas) colonizes the phloem tissue and eventually leads to tree decline and death. CLas possesses the Sec secretion system that delivers virulence proteins into the phloem of infected trees and promotes disease development. These Sec-delivered effectors can be used as molecular probes to uncover important mechanisms of host-pathogen arms race and set the foundation for the development of the urgently needed management strategies for HLB.</div>

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