Virus Genes (2008) 37, 298-303

Teruo Sano, Sayaka Isono, Keigo Matsuki, Yoko Kawaguchi-Ito, Kazuaki Tanaka, Ken-Ichi Kondo, Akira Iijima and Moshe Bar-Joseph (2008)
Vegetative propagation and its possible role as a genetic bottleneck in the shaping of the Apple fruit crinkle viroid populations in apple and hop plants
Virus Genes 37 (3), 298-303
Abstract: Apple fruit crinkle viroid (AFCVd) infects apples and hops. To analyze the genetic diversity of AFCVd, nine apple and six hop isolates were collected from several locations in Japan. In total, 76 independent cDNA clones were used for sequencing and phylogenetic analyses. Two major population clusters were identified. The first consisted of all four hop isolates from Akita and some from Yamagata. The second cluster consisted of some Yamagata hop and all apple isolates. On the basis of the polymorphism found in the nucleotide insertion between positions 142/143 of the AFCVd genome and the history of hop cultivation in the region, it appears likely that one of the AFCVd populations that pre-existed in the Yamagata hops served as a "founder" for the Akita hop cluster. In this scenario, a genetic bottleneck caused by vegetative propagation played an important role in the shaping of viroid populations in a cultivated crop.
(The abstract is excluded from the Creative Commons licence and has been copied with permission by the publisher.)
Link to article at publishers website
Database assignments for author(s): Teruo Sano, Moshe Bar-Joseph

Research topic(s) for pests/diseases/weeds:
molecular biology - genes

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Pest and/or beneficial records:

Beneficial	Pest/Disease/Weed	Crop/Product	Country	Quarant.
	Apple fruit crinkle viroid	Apple (Malus)	Japan
	Apple fruit crinkle viroid	Hop (Humulus lupulus)	Japan