Molecular typing of 'Candidatus Phytoplasma mali' and epidemic history tracing by a combined T-RFLP/VNTR analysis approach
Dalla Via J
MetadataShow full item record
SubjectCacopsylla melanoneura; Cacopsylla picta; Malus domestica; Molecular genetic typing; Rhodanese-like protein gene; Ribosomal protein L22 gene
Apple proliferation caused by 'Candidatus Phytoplasma mali' is a disease of apple trees gaining increasing importance in Europe. The present study describes a high-throughput method for simultaneous typing of 'Ca. P. mali' at two genetic loci. This novel approach combines terminal restriction fragment length polymorphism (T-RFLP) analysis of a putative rhodanese-like protein gene and the analysis of the variable number of tandem repeats (VNTR) of the ribosomal protein L22 gene. The typing approach was applied to analyse a collection of DNA isolates from 310 apple trees tested positive for 'Ca. P. mali'. Samples were taken between 2002 and 2010 in South Tyrol (Northern Italy). In addition, 15 samples of Cacopsylla melanoneura and 19 of C. picta were typed. Seven combined genetic profiles were found in the samples of infected apple trees: AT-2/rpX-A (81.0%), AT-1/rpX-D (8.4%), AT-1/rpX-E (4.2%), AT-1/rpX-A (3.2%), AT-1/rpX-B (1.6%), AT-1/rpX-C (1.0%) and AP/rpX-A (0.3%), and one mixed infection AP + AT-1/rpX-A + rpX-D (0.3%). Subtype rpX-E was discovered for the first time. In C. melanoneura samples the most frequent subtype was AT-1/rpX-E, followed by AT-1/rpX-D and AT-1/rpX-C. All C. picta samples displayed subtype AT-2/rpX-A. Analysis of the temporal distribution of subtype frequencies in apple trees revealed that exclusively subtype AT-1 in combination with four rpX subtypes was present in South Tyrol in the period from 2002 to 2004. From 2006 onwards subtype AT-2/rpX-A became dominant with an average frequency of 90%. The data obtained suggest that there may be a co-adaptation of particular 'Ca. P. mali' subtypes with different insect vector species. © 2011 KNPV.
Showing items related by title, author, creator and subject.
Iakovidou N; Symeonidis P; Manolopoulos Y (IEEE, 2010)An increasing number of observations support the hypothesis that the vast majority of biological functions involve interactions between proteins and that the complexity of living systems arises as a result of such interactions. ...
Meta-analysis of genome-wide association studies in >80 000 subjects identifies multiple loci for C-reactive protein levels Dehghan A; Dupuis J; Barbalic M; Bis JC; Eiriksdottir G; Lu C; Pellikka N; Wallaschofski H; Kettunen J; Henneman P; Baumert J; Strachan DP; Fuchsberger C; Vitart V; Wilson JF; Paré G; Naitza S; Rudock ME; Surakka I; de Geus EJ; Alizadeh BZ; Guralnik J; Shuldiner A; Tanaka T; Zee RY; Schnabel RB; Nambi V; Kavousi M; Ripatti S; Nauck M; Smith NL; Smith AV; Sundvall J; Scheet P; Liu Y; Ruokonen A; Rose LM; Larson MG; Hoogeveen RC; Freimer NB; Teumer A; Tracy RP; Launer LJ; Buring JE; Yamamoto JF; Folsom AR; Sijbrands EJ; Pankow J; Elliott P; Keaney JF; Sun W; Sarin AP; Fontes JD; Badola S; Astor BC; Hofman A; Pouta A; Werdan K; Greiser KH; Kuss O; Meyer Zu Schwabedissen H; Thiery J; Jamshidi Y; Nolte IM; Soranzo N; Spector TD; Völzke H; Parker AN; Aspelund T; Bates D; Young L; Tsui K; Siscovick DS; Guo X; Rotter JI; Uda M; Schlessinger D; Rudan I; Hicks AA; Penninx BW; Thorand B; Gieger C; Coresh J; Willemsen G; Harris TB; Uitterlinden AG; Järvelin MR; Rice K; Radke D; Salomaa V; Willems van Dijk K; Boerwinkle E; Vasan RS; Ferrucci L; Gibson QD; Bandinelli S; Snieder H; Boomsma DI; Xiao X; Campbell H; Hayward C; Pramstaller PP; van Duijn CM; Peltonen L; Psaty BM; Gudnason V; Ridker PM; Homuth G; Koenig W; Ballantyne CM; Witteman JC; Benjamin EJ; Perola M; Chasman DI (2011)BACKGROUND: C-reactive protein (CRP) is a heritable marker of chronic inflammation that is strongly associated with cardiovascular disease. We sought to identify genetic variants that are associated with CRP levels. METHODS ...
Arabidopsis thaliana AUCSIA-1 regulates Auxin biology and physically interacts with a kinesin-related protein Molesini B; Pandolfini T; Pii Y; Korte A; Spena A (Bozen - Bolzano University Press, 2012)Aucsia is a green plant gene family encoding 44–54 amino acids long miniproteins. The sequenced genomes of most land plants contain two Aucsia genes. RNA interference of both tomato (Solanum lycopersicum) Aucsia genes ...