Why is it so difficult to control Huanglongbing (HLB)? Point of view

Abstract

Sweet orange is an important fruit crop in several countries in tropical and subtropical regions. However, a devastating disease, Huanglongbing (HLB), threatens its production. This disease is associated with the bacterium ‘Candidatus Liberibacter asiaticus’ (CLas), transmitted by the Asian citrus psyllid. This text examines the intricate relationships between host, pathogen, vector, and environment factors that complicate HLB control. It also reviews potential strategies, such as searching for resistance varieties, and discusses recommended HLB management, including eradication and preventive measures, while highlighting the difficulties in implementing effective management. This text points out the urgent need for innovative and integrated approaches to slow the progression of HLB and mitigate its impact on global citrus production.