J Integr Plant Biol. ›› 2016, Vol. 58 ›› Issue (4): 373-387.DOI: 10.1111/jipb.12437

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Huanglongbing: An overview of a complex pathosystem ravaging the world's citrus

John V. da Graça1, Greg W. Douhan2, Susan E. Halbert3, Manjunath L. Keremane4, Richard F. Lee4†, Georgios Vidalakis2* and Hongwei Zhao5*   

  1. 1Texas A&M University—Kingsville Citrus Center, Weslaco, Texas 78599, USA
    2Department of Plant Pathology and Microbiology, University of California, Riverside, California 92521, USA
    3Florida Department of Agriculture and Consumer Services, Division of Plant Industry, Gainesville, Florida 32614, USA
    4USDA ARS National Clonal Germplasm Repository for Citrus and Dates, Riverside, California 92507, USA
    5College of Plant Protection, Nanjing Agricultural University, Nanjing 210095, China


Citrus huanglongbing (HLB) has become a major disease and limiting factor of production in citrus areas that have become infected. The destruction to the affected citrus industries has resulted in a tremendous increase to support research that in return has resulted in significant information on both applied and basic knowledge concerning this important disease to the global citrus industry. Recent research indicates the relationship between citrus and the causal agent of HLB is shaped by multiple elements, in which host defense responses may also play an important role. This review is intended to provide an overview of the importance of HLB to a wider audience of plant biologists. Recent advances on host-pathogen interactions, population genetics and vectoring of the causal agent are discussed.

Key words: Citrus greening, Diaphorina citri, host response, Huanglongbing (HLB), psyllid vectors

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