Please use this identifier to cite or link to this item: http://hdl.handle.net/2067/1620
DC FieldValueLanguage
dc.contributor.authorMusetti, Rita-
dc.contributor.authorPaolacci, Anna Rita-
dc.contributor.authorCiaffi, Mario-
dc.contributor.authorTanzarella, Oronzo A.-
dc.contributor.authorPolizzotto, Rachele-
dc.contributor.authorTubaro, Franco-
dc.contributor.authorMizzau, Michela-
dc.contributor.authorErmacora, Paolo-
dc.contributor.authorBadiani, Maurizio-
dc.contributor.authorOsler, Ruggero-
dc.date.accessioned2011-03-23T17:18:52Z-
dc.date.available2011-03-23T17:18:52Z-
dc.date.issued2009-
dc.identifier.citationMusetti, R. et al. 2009. ‘Recovery’ from apple proliferation disease: an integrated approach. In: Bertaccini A., Amparo L., Torres E. (eds). COST Action FA0807. Integrated Management of Phytoplasma Epidemics in Different Crop Systems. Current status and perspectives of phytoplasma disease research and management. Abstract book of the combined meeting of Work Groups. (Sitges, Spain February 1st and 2nd 2010) (1-4):89en
dc.identifier.isbn13: 978-84-692-98916-
dc.identifier.urihttp://hdl.handle.net/2067/1620-
dc.description.abstractRecovery is the spontaneous remission, sometimes permanent, from disease symptoms. Phytoplasmas surviving in the roots are not able to recolonise the plant crown. The causes that induce recovery remain still unknown and its physiological bases are poorly understood. In this research the modifications in the phloem tissue related to recovery-induced resistance in apple have been investigated through ultrastructural, chemical, cytochemical and gene expression analyses of leaf tissues from recovered, healthy and apple proliferation-diseased plants. Ultrastructural observations detected abnormal callose and P-protein accumulations in the phloem of recovered apple plants. Callose synthesis and Pprotein plugging, which are Ca2+-dependent, would form physical barriers preventing the in planta movement. The cytochemical localization by potassium pyroantimonate detected the presence of Ca2+ ions in the phloem in all the three groups of plants; however the Ca2+ concentration was remarkably higher in the cytosol of the recovered apple plants. This observation would support the hypothesis that resistance mechanisms would be related to an increased Ca2+- dependent signaling activities. Apple genes coding for callose synthases and phloem proteins were identified by an in silico approach. The expression patterns of five genes encoding callose synthases (MDCALS1/5) and of four genes encoding phloem proteins (MDPP2-1/3 and MDERG1) were analysed by quantitative real time RT-PCR. Four of the nine analysed genes were up-regulated in recovered plants in comparison to healthy and diseased ones, supporting the hypothesis that recovered apple plants were able to develop resistance mechanisms dependent from Ca2+ signal activities.en
dc.language.isoenen
dc.subjectPhytoplasmen
dc.subjectAppleen
dc.subjectRecoveryen
dc.subjectFitoplasmait
dc.subjectMeloit
dc.subjectRisanamentoit
dc.title‘Recovery’ from apple proliferation disease: an integrated approach.en
dc.typeConference Proceedingsen
item.fulltextWith Fulltext-
item.openairetypeConference Proceedings-
item.cerifentitytypePublications-
item.grantfulltextopen-
item.languageiso639-1en-
item.openairecristypehttp://purl.org/coar/resource_type/c_18cf-
Appears in Collections:DABAC - Archivio della produzione scientifica
Files in This Item:
File Description SizeFormat
COST_Fitoplasmi_Spagna_09.pdf181.94 kBAdobe PDFView/Open
Show simple item record

Page view(s)

104
Last Week
2
Last month
0
checked on Apr 20, 2024

Download(s)

56
checked on Apr 20, 2024

Google ScholarTM

Check

Altmetric


All documents in the "Unitus Open Access" community are published as open access.
All documents in the community "Prodotti della Ricerca" are restricted access unless otherwise indicated for specific documents