Journal of General Plant Pathology (2011) 77, 43-47

Shin-ichi Miyata, Hiroshi Kato, Richard Davis, Malcolm W. Smith, Matthew Weinert and Toru Iwanami (2011)
Asian-common strains of `Candidatus Liberibacter asiaticus' are distributed in Northeast India, Papua New Guinea and Timor-Leste
Journal of General Plant Pathology 77 (1), 43-47
Abstract: ´Candidatus Liberibacter asiaticus' is the most widespread of the three species of `Ca. Liberibacter' that cause citrus greening disease (huanglongbing). To ascertain the phylogenetic relationships among Indian isolates that have higher diversity in the 16S rDNA than Asian isolates of this species, we collected symptomatic leaves from Northeast India, Papua New Guinea and Timor-Leste (East Timor) and detected `Ca. L. asiaticus' by PCR using primers specific for nusG-rplK genes and 16S rDNA. Phylogenetic analysis with 16S rDNA sequences and single nucleotide polymorphisms of the omp gene region revealed that the Northeast Indian isolates were genetically closer to Asian-common isolates from Japan, Taiwan, and Vietnam than to Indian isolates reported previously. Thus, the Asian-common strains of `Ca. L. asiaticus' are apparently also present in Northeast India.
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Link to article at publishers website
Database assignments for author(s): Toru Iwanami, Matthew P. Weinert

Research topic(s) for pests/diseases/weeds:
surveys/sampling/distribution

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Pest and/or beneficial records:

Beneficial	Pest/Disease/Weed	Crop/Product	Country	Quarant.
	Liberibacter asiaticus	Citrus (genus)	Papua New Guinea
	Liberibacter asiaticus	Citrus (genus)	India
	Liberibacter asiaticus	Citrus (genus)	East Timor