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Viroid - Wikipedia Viroid-like elements are pieces of covalently closed circular (ccc) RNA molecules that do not share the viroid's lifecycle The category encompasses satellite RNAs (including small plant satRNAs "virusoids", fungal "ambivirus", and the much larger HDV -like Ribozyviria) and "retroviroids"
Viroid | plant disease, RNA, pathogen | Britannica viroid, an infectious particle smaller than any of the known viruses, an agent of certain plant diseases The particle consists only of an extremely small circular RNA (ribonucleic acid) molecule, lacking the protein coat of a virus
6. 4: Viroids, Virusoids, and Prions - Biology LibreTexts In 1971, Theodor Diener, a pathologist working at the Agriculture Research Service, discovered an acellular particle that he named a viroid, meaning “virus-like ” Viroids consist only of a short strand of circular RNA capable of self-replication
What Is a Viroid and How Is It Different From a Virus? Discovered in 1971 by pathologist Theodor Otto Diener, a viroid is a simple pathogen It consists only of a short, single strand of circular RNA This RNA molecule is highly structured, with extensive base-pairing that causes it to fold back on itself into a compact, rod-like shape
Viroids: Definition, Meaning, Types, Examples, Diseases, Symptoms Viroids are the smallest known infectious agents, consisting solely of a short strand of circular, single-stranded RNA without a protein coat They are distinct from viruses due to their simple structure and ability to replicate autonomously within host cells
Viroids, Virusoids, and Prions | Microbiology - Lumen Learning In 1971, Theodor Diener, a pathologist working at the Agriculture Research Service, discovered an acellular particle that he named a viroid, meaning “virus-like ” Viroids consist only of a short strand of circular RNA capable of self-replication