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Malva Mosaic Virus
''Malva mosaic virus'' is a plant pathogenic virus of the family '' Alphaflexiviridae''. It was discovered in 2008 and infects the common mallow (''Malva neglecta''). Its genome is about 6,800 nucleotides in length and it contains five major open reading frame In molecular biology, open reading frames (ORFs) are defined as spans of DNA sequence between the start and stop codons. Usually, this is considered within a studied region of a prokaryotic DNA sequence, where only one of the six possible readin ...s. See also * '' Malva vein clearing virus'' References External links * Potexviruses Viral plant pathogens and diseases {{Virus-plant-disease-stub ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Alphaflexiviridae
''Alphaflexiviridae'' is a family of viruses in the order ''Tymovirales''. Plants and fungi serve as natural hosts. There are 65 species in this family, assigned to six genera. Diseases associated with this family include: mosaic and ringspot symptoms. Taxonomy The following genera are recognized: *'' Allexivirus'' *''Botrexvirus'' *'' Lolavirus'' *'' Platypuvirus'' *''Potexvirus ''Potexvirus'' is a genus of pathogenic viruses in the order '' Tymovirales'', in the family ''Alphaflexiviridae''. Plants serve as natural hosts. There are 48 species in this genus, three of which are assigned to a subgenus. Diseases associated ...'' *'' Sclerodarnavirus'' Structure Viruses in the genus ''Alphaflexiviridae'' are non-enveloped, with flexuous and filamentous geometries. The diameter is around 12-13 nm. Genomes are linear, around 5.4-9kb in length. The genome codes for 1 to 6 proteins. Life cycle Viral replication is cytoplasmic, and is lysogenic. Entry into the host cell is ach ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Malva Neglecta
''Malva neglecta'' is an annual growing to 0.6 m (2 ft). It is known as common mallow in the United States and also as buttonweed, cheeseplant, cheeseweed, dwarf mallow, and roundleaf mallow. This plant is often consumed as a food, with its leaves, stalks and seed all being considered edible. This is especially true of the seeds, which contain 21% protein and 15.2% fat. Distribution ;Native : Palearctic: ::Macaronesia: Canary Islands ::Northern Africa: Algeria, Morocco ::Arabian Peninsula: Saudi Arabia ::Western Asia: Afghanistan, Cyprus, Sinai, Iran, Iraq, Israel, Jordan, Lebanon, Palestinian Territories, Syria, Turkey ::Caucasus: Armenia, Azerbaijan, Georgia ::Soviet Middle Asia: Kazakhstan, Kyrgyzstan, Tajikistan, Turkmenistan, Uzbekistan ::Mongolia: Mongolia ::China: Xinjiang ::Indian Subcontinent: India, Pakistan ::Northern Europe: Denmark, Ireland, Norway, Sweden, United Kingdom ::Middle Europe: Austria, Belgium, Czech Republic, Germany, Hungary, Netherlands, ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Genome
In the fields of molecular biology and genetics, a genome is all the genetic information of an organism. It consists of nucleotide sequences of DNA (or RNA in RNA viruses). The nuclear genome includes protein-coding genes and non-coding genes, other functional regions of the genome such as regulatory sequences (see non-coding DNA), and often a substantial fraction of 'junk' DNA with no evident function. Almost all eukaryotes have mitochondria and a small mitochondrial genome. Algae and plants also contain chloroplasts with a chloroplast genome. The study of the genome is called genomics. The genomes of many organisms have been sequenced and various regions have been annotated. The International Human Genome Project reported the sequence of the genome for ''Homo sapiens'' in 200The Human Genome Project although the initial "finished" sequence was missing 8% of the genome consisting mostly of repetitive sequences. With advancements in technology that could handle sequenci ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Nucleotide
Nucleotides are organic molecules consisting of a nucleoside and a phosphate. They serve as monomeric units of the nucleic acid polymers – deoxyribonucleic acid (DNA) and ribonucleic acid (RNA), both of which are essential biomolecules within all life-forms on Earth. Nucleotides are obtained in the diet and are also synthesized from common nutrients by the liver. Nucleotides are composed of three subunit molecules: a nucleobase, a five-carbon sugar (ribose or deoxyribose), and a phosphate group consisting of one to three phosphates. The four nucleobases in DNA are guanine, adenine, cytosine and thymine; in RNA, uracil is used in place of thymine. Nucleotides also play a central role in metabolism at a fundamental, cellular level. They provide chemical energy—in the form of the nucleoside triphosphates, adenosine triphosphate (ATP), guanosine triphosphate (GTP), cytidine triphosphate (CTP) and uridine triphosphate (UTP)—throughout the cell for the many cellular func ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Open Reading Frame
In molecular biology, open reading frames (ORFs) are defined as spans of DNA sequence between the start and stop codons. Usually, this is considered within a studied region of a prokaryotic DNA sequence, where only one of the six possible reading frames will be "open" (the "reading", however, refers to the RNA produced by transcription of the DNA and its subsequent interaction with the ribosome in translation). Such an ORF may contain a start codon (usually AUG in terms of RNA) and by definition cannot extend beyond a stop codon (usually UAA, UAG or UGA in RNA). That start codon (not necessarily the first) indicates where translation may start. The transcription termination site is located after the ORF, beyond the translation stop codon. If transcription were to cease before the stop codon, an incomplete protein would be made during translation. In eukaryotic genes with multiple exons, introns are removed and exons are then joined together after transcription to yield the final ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Malva Vein Clearing Virus
''Malva vein clearing virus'' also known as MVCV is a species of ''Potyvirus'' in the family '' Potyviridae'' that was isolated in 1957 from '' Malva sylvestris'' in Germany which is transmitted by the aphids '' Aphis umbrella'' and '' Myzus persicae''. The insects mechanically inoculate the malvaceous hosts. Host range Known hosts of the virus include ''Malva neglecta'', '' M. nicaensis'', '' M. parviflora'', '' M. rotundifolia'', '' M. sylvestris'', '' Lavatera assurgentiflora'', '' L. cretica'', '' L. trimestris''. In addition to the natural hosts, infection can be experimentally induced in some other species of the Malvaceae or mallow family. MVCV causes vein clearing and yellow mosaicism. Distribution This virus has been reported from Tasmania, Brazil, the former Czechoslovakia, Germany, Israel, Italy, Portugal, California, Russia, the former Yugoslavia. See also * ''Malva mosaic virus ''Malva mosaic virus'' is a plant pathogenic virus of the family '' Alphaflexivir ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
