作者: W. Jarausch , T. Wetzel , A. Kappis , M. Herdemertens , A. Liebenberg
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摘要: Apple stem grooving virus (ASGV, Capillovirus) is widely spread in apple growing regions. As it causes no symptoms on most cultivated varieties and rootstocks considered latent Malus x domestica . In Asia, however, ASGV has been found associated with topworking disease of originating from sieboldii Recently, M. its hybrids have gained new interest Europe as they confer resistance to proliferation (AP) disease. A breeding program aiming develop AP-resistant agronomic value for modern culture, reported unexpected tree decline which was be ASGV. little information available the variability isolates Germany, complete genome a German isolate cloned sequenced. Sequence comparisons revealed two regions high genome. The genetic additional Germany other countries were collected variable areas characterised. addition successfully maintained micropropagated trees could transmitted by vitro grafting various genotypes, making possible study effect virus/phytoplama combination -derived genotypes. Keywords: Latent viruses, Candidatus Phytoplasma mali , micropropagation, grafting,