5 research outputs found
Phytoplasma diseases of medicinal crops
Phytoplasma diseases of medicinal plants occur worldwide and are of great
concern. So far 19 different phytoplasma ribosomal groups encompassing various
subgroups have been reported. The subgroup 16SrI-B phytoplasmas are the prevalent
agents mainly detected in Europe, North America and Asia. Phytoplasma diseases of
medicinal plants severely reduce yield and quality of crops along with the longevity
of the plants. Changes in the composition of secondary metabolites are induced, while
the levels of valuable phytochemicals are greatly affected. In contrast, an accumulation
of pharmaceutically important compounds such as vinblastine and vincristine is
reported in periwinkle upon phytoplasma infections. Important phytoplasma diseases
of several medicinal plants with special reference to their impact on active biological
constituents and secondary metabolites are reviewed. General information on geographic
distribution, diagnostics, genetic diversity, natural transmission and management
aspects of phytoplasmas infecting medicinal plants are also discussed
Phytoplasma Diseases in Ornamental Crops
An extensive and update review of the literature reporting the phytoplasma associated diseases in a number of ornamental plants and their classification is presented with major emphasis to reports in the main floricultural areas. Symptomatology of reported diseases is described in the most relevant traditional species as well as in emerging species used in floriculture and gardening worldwide