WebSep 5, 2024 · Some phytoplasma strains which may warrant designation of a new taxon, but fail to meet the requirement of sharing <97.5% sequence similarity with existing ‘Ca. Phytoplasma’, can be differentiated and classified using additional unique biological properties such as antibody specificity, host range, and vector transmission specificity ... Phytoplasmas are pathogensof agriculturally important plants, including coconut, sugarcane, and sandalwoodas well as horticultural crops like sweet cherry, peaches, and nectarines in which they cause a wide variety of symptoms ranging from mild yellowing, small fruit, and reduced sugar content to death. See more Phytoplasmas are obligate intracellular parasites of plant phloem tissue and of the insect vectors that are involved in their plant-to-plant transmission. Phytoplasmas were discovered in 1967 by Japanese scientists who … See more References to diseases now known to be caused by phytoplasmas can be found as far back as 1603 (mulberry dwarf disease in See more Phytoplasmas can infect and cause various symptoms in more than 700 plant species. One characteristic symptom is abnormal floral … See more Movement between plants Phytoplasmas are spread principally by insects of the families Cicadellidae (leafhoppers), See more Phytoplasmas are Mollicutes, which are bound by a triple-layered membrane, rather than a cell wall. The phytoplasma cell membranes studied to date usually contain a single … See more Many plant pathogens produce virulence factors (i.e., effectors) that modulate or interfere with normal host processes to the benefit of the … See more Before the molecular era, the diagnosis of phytoplasma-caused diseases was difficult because the organisms could not be cultured. Thus, classical diagnostic techniques, including symptom observation were used. Ultrathin sections of phloem tissue … See more
Phytoplasmas: An Update SpringerLink
WebPhytoplasma' species and alternative reference strains described are reported. For new ' Ca. Phytoplasma' species that will be assigned with identity ≥98.65 % of their 16S rRNA … WebPhytoplasma pruni' lineage. We propose that the term 'Ca. Phytoplasma pruni' be applied to phytoplasma strains whose 16S rRNA gene sequences contain the oligonucleotide sequences of unique regions that are designated in the formally published description of … free online shopping coupons
(PDF) First Report of an Association of ‘ Ca . Phytoplasma …
WebPhytoplasma, a taxon that includes the species Ca. Phytoplasma aurantifolia (the prokaryote associated with witches-broom disease of small-fruited acid lime), Ca. … WebCa. Phytoplasma solani’ causes losses in economically important cultivated species, such as grapevine, maize, potato, and tomato (EPPO, 2024). It can survive and complete its life cycle without cultivated host plants, using wild plants or weeds. The main symptom caused by ‘Ca. Phytoplasma solani’ on grapevine is the loss of production Web(‘Ca. Phytoplasma solani’, subgroup 16SrXII-A) elsewhere in Europe, provokes the question of whether this phytoplasma may be present but yet undetected in Lithuania. free online shopping cart web templates