A novel haplotype of 'Candidatus Liberibacter solanacearum' found in Apiaceae and Polygonaceae family plants

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Haapalainen , M , Latvala , S , Wickstrom , A , Wang , J , Pirhonen , M & Nissinen , A I 2020 , ' A novel haplotype of 'Candidatus Liberibacter solanacearum' found in Apiaceae and Polygonaceae family plants ' , European Journal of Plant Pathology , vol. 156 , no. 2 , pp. 413-423 . https://doi.org/10.1007/s10658-019-01890-0

Title: A novel haplotype of 'Candidatus Liberibacter solanacearum' found in Apiaceae and Polygonaceae family plants
Author: Haapalainen, Minna; Latvala, Satu; Wickstrom, Annika; Wang, Jinhui; Pirhonen, Minna; Nissinen, Anne I.
Other contributor: University of Helsinki, Department of Agricultural Sciences
University of Helsinki, Department of Agricultural Sciences
University of Helsinki, Department of Agricultural Sciences



Date: 2020-01
Language: eng
Number of pages: 11
Belongs to series: European Journal of Plant Pathology
ISSN: 0929-1873
DOI: https://doi.org/10.1007/s10658-019-01890-0
URI: http://hdl.handle.net/10138/310522
Abstract: A previously unknown haplotype of the plant pathogen 'Candidatus Liberibacter solanacearum' (Lso) was found in cultivated carrots and parsnips in eastern Finland. That same haplotype was found in western Finland, over 300 km away, in the family Polygonaceae, the species Fallopia convolvulus (wild buckwheat) and Persicaria lapathifolia (pale persicaria) growing as weeds within carrot and parsnip fields. The infected plants, both apiaceous and polygonaceous, showed symptoms of foliar discolouration. This is the first report of Lso bacteria in plants of the family Polygonaceae. The finding that the polygonaceous plants infected with a previously unknown haplotype of Lso were growing among the apiaceous plants infected with Lso haplotype C suggests that these two haplotypes might be transmitted by different vectors. Phylogenetic analyses showed that the new haplotype, called haplotype H, is distinct from the previously characterized haplotypes and appears to have diverged early from their common ancestor. Multi-locus sequence analysis revealed four different sequence types (strains) within the haplotype H. These findings suggest that the haplotype H is likely to be endemic in northern Europe and that the genetic diversity within the Lso species is higher than previously assumed.
Subject: 'Candidatus Liberibacter solanacearum'
Haplotype
Phylogenetics
Polygonaceae
Parsnip
Carrot disease
REAL-TIME PCR
SUBSTITUTIONS
CARROTS
POTATO
CROPS
11831 Plant biology
4111 Agronomy
1184 Genetics, developmental biology, physiology
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