Huanglongbing is a bacterial disease of citrus that until recently was confined to Asia and Africa. In 2004, the first discovery of the disease in the Western Hemisphere was in Sao Paulo, Brazil. In 2005, the disease was first discovered in Florida
Candidatus Liberibacter asiaticus causing huanglongbing in Florida . Plant Sci . 175 ( 3 ): 291 – 306 . https://doi.org/10.1016/j.plantsci.2008.05.001 . Ali S , Ganai BA , Kamili AN , Bhat AA , Mir ZA , Bhat JA , Tyagi A , Islam
The disease huanglongbing has devastated the Florida citrus industry. Yields of the 2017–18 cropping season were reduced 75% compared with the peak observed since HLB was first found in Florida ( U.S. Department of Agriculture, 2018a , 2018b ). HLB
are infected with Candidatus Liberibacter asiaticus (Las), the believed causal agent of huanglongbing disease (HLB). All five rootstocks, when grafted with common commercial citrus scions, produce medium-sized trees and appear adapted to production
insufficient carbohydrate flow to sustain the synthesis of starch in a basipetal direction and to support the growth of developing twigs, lower branches, and fruit. Fig. 1. Production of healthy fruit by an Huanglongbing (HLB)-affected citrus tree. Subtending
Citrus greening disease or huanglongbing (HLB) causes worldwide crop loss and reduced profitability for citrus growers ( da Graça, 1991 ). HLB is believed to be caused by a fastidious phloem-limited bacterium that infects nearly all citrus species
-source accessions from the National Clonal Germplasm Repository for Citrus and Dates. Trees were evaluated at the USDA Fort Pierce, FL, farm over 2 weeks late October through Nov. 2015, 6 years after planting in an area with severe huanglongbing and natural
Huanglongbing (or citrus greening) has become the most devastating endemic disease in Florida, having infected 80% to 90% of commercial citrus trees ( Albrigo and Stover, 2015 ). The disease is putatively incited by the bacterial pathogen
study during 2014 and 2015. Fig. 1. Effect of Huanglongbing (HLB) affected and nonaffected sweet orange trees (‘Hamlin’ and ‘Valencia’) on soil total available water content in the top soil [0–30 cm (11.8 inches)] in lysimeters under greenhouse
orange trees with three Huanglongbing symptom levels (mild, moderate, and severe). Three weeks before harvest, 10 randomly selected fruit from each tree were subjected to FT measurements to determine the likeliness of fruit drop (loose vs. tight fruit on