phytoplasma

== English == === Etymology === From phyto- +‎ plasma. === Noun === phytoplasma (plural phytoplasmas) Any of various specialized bacteria that are obligate parasites of plant phloem tissue and of some insects, characterized by the lack of a cell wall, a pleiomorphic or filamentous shape (normally with a diameter of less than one micrometer), and their very small genomes. ==== Derived terms ==== phytoplasmal