Natural infection of wild and cultivated pears with apple scar skin viroid in Greece

dc.contributor.author	Kyriakopoulou, PE	en
dc.contributor.author	Hadidi, A	en
dc.date.accessioned	2014-06-06T06:43:29Z
dc.date.available	2014-06-06T06:43:29Z
dc.date.issued	1998	en
dc.identifier.issn	05677572	en
dc.identifier.uri	http://62.217.125.90/xmlui/handle/123456789/1303
dc.relation.uri	http://www.scopus.com/inward/record.url?eid=2-s2.0-16344371236&partnerID=40&md5=2ecc89d8aeee54b4dd11aa478f52e8de	en
dc.subject	Apple scar skin viroid	en
dc.subject	ASSVd	en
dc.subject	Geographic origin	en
dc.subject	Pear	en
dc.subject	Pyrus amygdaliformis	en
dc.subject	Wild pear	en
dc.subject.other	Apple scar skin viroid	en
dc.subject.other	Malus x domestica	en
dc.subject.other	Pyrus	en
dc.subject.other	Pyrus amygdaliformis	en
dc.subject.other	Pyrus communis	en
dc.subject.other	Pyrus pyraster	en
dc.subject.other	Viroids	en
dc.title	Natural infection of wild and cultivated pears with apple scar skin viroid in Greece	en
heal.type	conferenceItem	en
heal.publicationDate	1998	en
heal.abstract	Apple scar skin viroid (ASSVd) was found in naturally infected wild (Pyrus amygdaliformis) and cultivated pear (Pyrus communis) in Greece using dot-blot hybridization analysis and RT-PCR assays. Scar skin disease, originally observed in a severely damaged commercial pear orchard, was later found widespread in cultivated and wild pear in northern Peloponnesus, Greece. Of 50 fruit, leaf or bark samples from diseased plants, 30% hybridized with ASSVd cRNA probe. The presence of ASSVd in wild pear on the mountains, away from any human interference, suggests that the viroid is native to Greece. Thus, Greece, in the Mediterranean region, is a second center of origin of ASSVd to northeast Asia in China and Japan. ASSVd may have co-existed with wild pear in Greece for centuries or millennia. This species has been the traditional rootstock of pear and apple in Greece, and pear infection has obviously been taking place by grafting on infected rootstock, or using infected budwood. The broad occurrence of the viroid in wild pear trees away from human interference suggests the existence of some natural means of transmission of ASSVd.	en
heal.journalName	Acta Horticulturae	en
dc.identifier.volume	472	en
dc.identifier.spage	617	en
dc.identifier.epage	625	en