HortScience


Publications
15

Transmission Efficiency of Candidatus Liberibacter asiaticus and Progression of Huanglongbing Disease in Graft- and Psyllid-inoculated Citrus

Citation
Albrecht et al. (2014). HortScience 49 (3)
Names
Ca. Liberibacter asiaticus
Abstract
Candidatus Liberibacter asiaticus (Las) is a phloem-limited bacterium associated with huanglongbing (HLB), one of the most destructive diseases of citrus in Florida and other citrus-producing countries. Natural transmission of Las occurs by the psyllid vector Diaphorina citri, but transmission can also occur through grafting with diseased budwood. As a result of the difficulty of maintaining Las in culture, screening of citrus germplasm for HLB resistance often relies on graft inoculation as the

Quantitative Distribution of Candidatus Liberibacter asiaticus in the Aerial Parts of the Huanglongbing-infected Citrus Trees in Texas

Citation
Kunta et al. (2014). HortScience 49 (1)
Names
Ca. Liberibacter asiaticus
Abstract
The Asian citrus psyllid, Diaphorina citri Kuwayama, one of the known vectors for citrus greening disease or Huanglongbing (HLB) pathogens, has been present in Texas for over a decade, but the detection of the disease is recent. HLB has been confirmed in only two adjacent commercial citrus groves of grapefruit and sweet orange. A study was conducted to compare the population of Candidatus Liberibacter asiaticus (CLas) cells in different plant parts including peduncle, columella, leaves, seeds, y

Incidence and Severity of Huanglongbing and Candidatus Liberibacter asiaticus Titer among Field-infected Citrus Cultivars

Citation
Stover, McCollum (2011). HortScience 46 (10)
Names
Ca. Liberibacter asiaticus
Abstract
Incidence and severity of Huanglongbing (HLB) disease were assessed in Apr. 2010 among eight citrus cultivars representing diverse scion types growing in commercial groves in Florida's Indian River region, an area with a high incidence of HLB. In each grove, 20 trees of each cultivar were rated for visual HLB symptoms and leaves were collected for quantitative polymerase chain reaction quantification of Candidatus Liberibacter asiaticus (CLas), the presumptive causal agent of HLB. There was a st

Levels of Candidatus Liberibacter asiaticus and Xanthomonas citri in Diverse Citrus Genotypes and Relevance to Potential Transmission from Pollinations

Citation
Stover, McCollum (2011). HortScience 46 (6)
Names
Ca. Liberibacter asiaticus
Abstract
The diseases huanglongbing [HLB, associated with Candidatus Liberibacter asiaticus (CLas)] and Asian citrus canker [ACC, caused by Xanthomonas citri (Xcc)] are widespread in Florida and many other citrus-growing areas, presenting unprecedented challenges for citrus breeding. Because HLB and ACC weaken trees and compromise cropping, breeding is much less efficient using seed parents that have been exposed to these diseases. Therefore, it would be highly desirable to use unique disease-exposed sel

Candidatus Liberibacter asiaticus and Huanglongbing Effects on Citrus Seeds and Seedlings

Citation
Albrecht, Bowman (2009). HortScience 44 (7)
Names
Ca. Liberibacter asiaticus Liberibacter
Abstract
Huanglongbing (HLB) is a devastating disease of citrus and threatens the citrus industry worldwide. The suspected causal agent of the disease is a phloem-limited bacterium of the genus Candidatus Liberibacter transmitted through insect vector or grafting with diseased budwood. Currently, most seed source trees for citrus rootstock propagation are located outdoors and unprotected from disease transmission. In addition, fruit from HLB-affected scion varieties in Florida containing seeds enter the