Definitions for "Viroid"
Related Terms:
Rna virus, Nucleocapsid, Messenger rna, Mrna, Rna, Ribonucleic acid, Aptamer, Dna, Deoxyribonucleic acid, Rna polymerase, Spliceosome, Oligonucleotide, Thymine, Adenine, Base pair, Base, Cytosine, Guanine, Endonuclease, Bases, Rrna, Nucleic acids, Double helix, Polymerase, Polyadenylation, Base pairs, Ribozyme, Thymidine, Uracil, Deoxyribonucleotide, Ribosomal rna, Guanosine, Nucleic acid, Polyribosome, Base pairing, Nucleoside, Nick, Capsid, Nucleotides, Ribonuclease, Nuclease, Polysome, Helicase, Nitrogenous base, Nucleotide, Complementary, Ligase, Renaturation, Polynucleotide, Synthesis
RNA molecule that is a plant pathogen.
(vye´ roid) • An infectious agent consisting of a single-stranded RNA molecule with no protein coat; produces diseases in plants.
An autonomously replicating plant pathogen.
Viroids are composed of nothing more than a single, circular strand of genetic material, and cause disease in plant cells. Replicating in the nuclei of plant cells, they often cause striking diseases in their host plants. Lacking even a protective shell of protein, viroids do not even spread easily from one cell or plant to another.
A pathogenic agent that has virus-like properties composed only of a small amount of RNA and containing no protein; the RNA is reproduced during infection.
the smallest of viruses; a plant virus with its RNA arranged in a circular chromosome without a protein coat
a piece of genetic material that, unlike a virus, has no protein coat
a small infectious nucleic acid that does not have a protein coat
a type of very primitive virus, but it only affects plants
( vy-roid) A plant pathogen composed of molecules of naked RNA only several hundred nucleotides long.
An infectious nucleic acid without a protein coat that causes potato spindle tuber or chrysanthemum stunt.
any of a class of infectious agents consisting of a single-stranded closed circular RNA lacking a capsid. The RNA does not code for proteins and is not translated; it is replicated by host cell enzymes. Viroids are known to cause several plant diseases.
A small RNA molecule with viruslike properties.
Any of numerous kinds of small particles (250-400 nucleotides) of circular, single-stranded RNA that is unencapsidated and encodes no known proteins. ()
Infective form of nucleic acid without a protective coat of protein; unencapsulated single-stranded RNA molecules.
Viroids are plant pathogens that consist of a short stretch (a few hundred nucleobases) of highly complementary, circular, single-stranded RNA without the protein coat that is typical for viruses. The smallest so far is a 220 nucleobase scRNA (small cytoplasmic RNA) associated with the rice yellow mottle sobemovirus (RYMV)http://www.ncbi.nlm.nih.gov/entrez/query.fcgi?cmd=Retrieve&db=PubMed&list_uids=9499801&dopt=Abstract. In comparison, the genome of the smallest known viruses capable of causing an infection by themselves are around 2 kilobases in size.