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Viruses causing apple topworking disease (Taka tsugi byo) in Japan


, : Viruses causing apple topworking disease (Taka tsugi byo) in Japan. Acta Horticulturae (44): 221-229

A general decline of apple trees often followed top grafting with any of several new apple cvs, especially where Malus prunifolia var. ringo was the rootstock but it also occurred sometimes where M. sieboldi or M. sieboldi var. arborescens was the stock. Indexing tests showed apple chlorotic leaf spot (CLSV) to be present in all declined and many apparently healthy trees, while stem pitting (SPV) and stem grooving (SGV) viruses were sometimes present.

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Related references

Mink, G.I.; Yanase, H.; Yamaguchi, A.; Sawamura, K., 1973: Research on apple topworking disease (taka tsugi byo) in Japan: a review. Decline of apple trees soon after topworking is a serious problem in commercial orchards in Japan because the rootstocks widely used comprise certain native Malus species which are sensitive to latent viruses. Chlorotic leafspot or stem pitting vi...

Yanase, H., 1974: Studies on apple latent viruses in Japan. The association of apple topworking disease with apple latent viruses. Chlorotic leafspot virus was consistently detected in trees carrying the causal virus of Malus prunifolia ringo decline but it was also present in some trees free from this, indicating the presence of the virus latently. The latent str. was design...

Anonymous, 2006: Occurrence of topworking disease caused by Apple chlorotic leaf spot virus (type strain) on apple saplings with JM1 rootstock and sensitivity of JM series rootstocks to causal viruses of the disease

Machita, I., 1995: Reactions of Malus hupehensis to the inoculation of causal viruses of apple topworking disease. On inoculation by a double-budding method, apple stem grooving capillovirus induced necrosis of the graft union. Isolates of apple chlorotic leafspot virus caused severe red spot, necrotic spot and necrosis on young leaves, or mild symptoms. Apple...

Anonymous, 2004: Detection of causal viruses of apple topworking disease in ornamental Malus plants by RT-PCR

Yanase H.; Yamaguchi A.; Mink G.I.; Sawamura K., 1979: Back transmission of apple chlorotic leaf spot virus type strain to apple and production of apple topworking disease symptoms in maruba kaido malus prunifolia var ringo. Apple chlorotic leafspot virus (CLSV) type strain isolated from an apple tree was back-transmitted to 8 day old apple seedlings by rub-inoculation with partially purified and highly purified inoculum. The back-transmitted isolates induced typical...

Yanase, H.; Yamaguchi, A.; Mink, G.I.; Sawamura, K., 1979: Back transmission of apple chlorotic leafspot virus (type strain) to apple and production of apple topworking disease symptoms in Maruba Kaido (Malus prunifolia Borkh. var. ringo Asami). ACLSV was back-transmitted to 8-day-old apple seedlings by rub-inoculation with partially and highly purified inoculum. The back-transmitted isolates induced typical apple topworking disease symptoms on a clone of M. prunifolia var. ringo, infecte...

Yanase, H., 1983: Back-transmission of apple stem grooving virus to apple seedlings and induction of symptoms of apple topworking disease in Mitsuba Kaido (Malus sieboldii) and Kobano Zumi (Malus sieboldii var. arborescens) rootstocks. Acta Horticulturae: (130) 117-122

Yanase H.; Mink G.I.; Sawamura K.; Yamaguchi A., 1990: Virus and graft transmissible diseases apple topworking disease. Jones, A L And H S Aldwinckle (Ed ) Compendium Of Apple And Pear Diseases Vi+100p Aps (American Phytopathological Society) Press: St Paul, Minnesota, Usa Illus Paper 74-75

Saito N.; Natsui T.; Ohtani T., 1988: Quick detection of apple topworking disease by malus scheideckeri. Examinations on the indexing for three apple latent viruses, apple stem pitting virus (ASPV), apple stem grooving virus (ASGV) and apple chlorotic leaf spot virus (ACLSV), were carried out by using the indicator plant, Malus scheideckeri. When M....