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Characterization of phytoplasmas related to 'Candidatus Phytoplasma asteris' subgroup rpI-L in Iran

Citation
Vali-Sichani et al. (2014). Journal of Plant Protection Research 54 (2)
Names
Ca. Phytoplasma asteris
Abstract
Abstract In two of Iran's central provinces, several herbaceous plants showing phytoplasma disease symptoms were collected to detect 'Canididatus Phytoplasma asteris'-related phytoplasmas. Confirmation of an association of phytoplasmas with diseased plants was done using polymerase chain reaction (PCR) assays having the phytoplasma universal primer pairs P1/P7 followed by R16F2n/ R16R2 in nested PCR. Then, for detection of 'Ca. P. asteris', DNA samples were subjected to amplification of rp and t

First Report of a New Subgroup 16Sr II-M ‘Candidatus Phytoplasma aurantifolia’ Associated with Witches'-Broom Disease of Tephrosia purpurea in India

Citation
Yadav et al. (2014). Plant Disease 98 (7)
Names
Ca. Phytoplasma aurantifolia
Abstract
Wild indigo (Tephrosia purpurea (L.) Pers.) grows as a common weed throughout the Indian subcontinent. The plant has pinnate leaves, white or purplish flowers, and flat hairy pods, and is cultivated as a green manure crop. The plant extracts contain compounds such as tephrosin, an aromatic ester, prenylated flavonoid, and sesquiterpene (2) that have medicinal properties. The newly recognized disease, Tephrosia purpurea witches' broom (TPWB), was characterized by chlorosis, stunting, and prolife

First Report of ‘Candidatus Phytoplasma pyri’ Causing Peach Yellow Leaf Roll (PYLR) in Spain

Citation
Sabaté et al. (2014). Plant Disease 98 (7)
Names
Ca. Phytoplasma pyri
Abstract
‘Candidatus Phytoplasma prunorum,’ which causes European stone fruit yellows (ESFY), is the prevalent phytoplasma affecting Prunus spp. in Europe. It is closely related to ‘Ca. P. pyri,’ which causes pear decline (PD) in pear trees. Both phytoplasma belong to the ribosomal group 16Sr-X and are naturally transmitted by different species of Cacopsylla spp. (4). In North America, ‘Ca. P. pyri’ is responsible for peach yellow leaf roll (PYLR), transmitted by Cacopsylla pyricola from pear to peach t