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Genetic analysis of 'Candidatus Phytoplasma aurantifolia' associated with witches' broom on acid lime trees.
Al-Ghaithi, Aisha G; Al-Subhi, Ali M; Al-Mahmooli, Issa H; Al-Sadi, Abdullah M.
Afiliação
  • Al-Ghaithi AG; Department of Crop Sciences, College of Agricultural and Marine Sciences, Sultan Qaboos University, Al-Khod, Muscat, Oman.
  • Al-Subhi AM; Department of Crop Sciences, College of Agricultural and Marine Sciences, Sultan Qaboos University, Al-Khod, Muscat, Oman.
  • Al-Mahmooli IH; Department of Crop Sciences, College of Agricultural and Marine Sciences, Sultan Qaboos University, Al-Khod, Muscat, Oman.
  • Al-Sadi AM; Department of Crop Sciences, College of Agricultural and Marine Sciences, Sultan Qaboos University, Al-Khod, Muscat, Oman.
PeerJ ; 6: e4480, 2018.
Article em En | MEDLINE | ID: mdl-29527419
ABSTRACT
"Candidatus Phytoplasma aurantifolia" is associated with witches' broom disease of lime in Oman and the UAE. A previous study showed that an infection by phytoplasma may not necessarily result in the physical appearance of witches' broom symptoms in some locations in Oman and the UAE. This study investigated whether phytoplasma strains belonging to "Ca. P. aurantifolia" (based on the 16S rRNA gene analysis) in locations where disease symptoms are expressed are different from phytoplasma in locations where disease symptoms are not expressed. About 21 phytoplasma strains (15 from areas and trees with disease symptoms and six from areas and trees without disease symptoms) were included in the analysis. The study utilized sequences of the imp and SAP11 genes to characterize the 21 strains. Phylogenetic analysis of both genes showed that the 21 strains are similar to each other and to reference strains in GenBank. The study shows that there is a low level of diversity among all phytoplasma strains. In addition, it shows that phytoplasma in places where witches' broom symptoms are not expressed are similar to phytoplasma in places where disease symptoms are expressed. This may suggest that disease expression is not linked to the presence of different phytoplasma strains, but may be due to other factors such as weather conditions.
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Texto completo: 1 Coleções: 01-internacional Base de dados: MEDLINE Tipo de estudo: Risk_factors_studies Idioma: En Revista: PeerJ Ano de publicação: 2018 Tipo de documento: Article País de afiliação: Omã

Texto completo: 1 Coleções: 01-internacional Base de dados: MEDLINE Tipo de estudo: Risk_factors_studies Idioma: En Revista: PeerJ Ano de publicação: 2018 Tipo de documento: Article País de afiliação: Omã