Review of Short Phrases and Links|
This Review contains major "Dikaryon"- related terms, short phrases and links grouped together in the form of Encyclopedia article.
- Dikaryon is from Greek, di meaning 2 and karyon meaning nut, refering to the nucleus of the cell.
- The dikaryon is a prolonged mycelial stage in which the nuclei from each mating partner remain together without fusing.
- The dikaryon is a prolonged mycelial stage that can be induced to develop a multicellular structure, the mushroom, under proper environmental conditions.
- The dikaryon is long lasting but ultimately gives rise to either fruitbodies with basidia or directly to basidia without fruitbodies.
- The compatible monokaryons produce dikaryon, which form an elaborate multicellular fruit body, as shown in a left picture.
- Definition of dikaryon from Merriam-Webster's Medical Dictionary with examples and pronunciations.
- Dikaryon: a pair of closely associated, sexually compatible nuclei, may or may not be derived from a different parent hypha or cell.
- The dikaryon may live and grow for years, and some are thought to be many centuries old.
- Describe what is meant by a "dikaryon" and where this stage fits within the life cycle of an Ascomycete fungus.
- This begins the dikaryon stage of the life cycle.
- RECEPTIVE HYPHAE - special hyphae arising from spermagonia of rust fungi; the spermatia from other spermagonia fuse with them and initiate the dikaryon.
- Their nuclei will remain separate during the initial stages - this intermediate stage is called the dikaryon.
- Under appropriate conditions, the dikaryon will produce fruiting bodies.
- The maintenance of the two nuclei during the growth of the dikaryon clearly is important for completion of the sexual cycle.
- Dikaryon is from Greek, di meaning 2 and karyon meaning nut, referring to the cell nucleus.
- ASCOMYCOTINA - Subphylum of Dikaryomycota; form endogenous meiospores in asci and have a restricted dikaryon; generally called Ascomycetes.
- Fusion of primary mycelia produces a dikaryon, which gives rise to the fruiting body, as in basidiomycetes.
- A filamentous dikaryon arises after fusion of two compatible haploid strains.
- After cell fusion, a filamentous dikaryon, which is able to infect the plant, is formed.
- The dikaryon grows filamentous and is able to induce tumors in maize plants.
- Dikaryon: A hyphal compartment, mycelium or fungal cell occupied by a pair or pairs of closely associated, genetically different, sexually compatible nuclei.
- D Dikaryon a hypha or portion of hyphae which contains two haploid nuclei in each cell (see monokaryon, heterokaryotic).
- After plasmogamy, the nuclei from each parent join, but do not fuse (there are two nuclei), which forms a dikaryon.
- Plasmogamy between compatible individuals leads to delayed karyogamy leading to establishment of a dikaryon.
- The single hypha produced by fusion typically has two nuclei per "cell", and is known as a dikaryon, meaning "two nuclei".
- The nonclamped hyphae contained a single nucleus per cell (monokaryon), while the clamped hyphae contained two nuclei per cell (dikaryon).
- The two nuclei in the dikaryon eventually fuse to produce a diploid cell—that is, a cell that contains one nucleus with two sets of chromosomes.
- Karyogamy is delayed, so that the compatible nuclei remain in pairs, called a dikaryon.
- Having entered the plant the dikaryon induces tumors in its host in which massive proliferation of fungal material, karyogamy and spore formation occur.
- The paired dikaryon in the basidium fuse (i.e karyogamy takes place).
- The mycelium within this structure remains as a dikaryon, diploid formation only occurring within the modified hyphal tip called the basidium.
- Maintenance of the dikaryon requires elaborate septum formation (clamp connections, Fig 10.) during growth and nuclear division.
- Then the resulting dikaryon divides through clamp connections so that the dikaryon state is maintained.
- The compatible nuclei of the dikaryon merge forming a diploid nucleus that then under goes meiosis and ultimately internal ascospore formation.
- The formation of a dikaryon is a pleisiomorphic character for the subkingdom Dikarya, which covers both the Basidiomycota and Ascomycota.
- The dikaryon in basidiomycetes is maintained through cell division by the production of clamp connections, as shown in the figure above from here.
- Cytoplasm > Plasmogamy
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