How to use pseudoplasmodium in a sentence? Find typical usage patterns (collocations)/phrases/context for "pseudoplasmodium" and check conjugation/comparative form for "pseudoplasmodium". Mastering all the usages of "pseudoplasmodium" from sentence examples published by news publications.
In damp weather, a Polysphondylium pallidum myxamoeba can move around at a speed of about per hour, leaving a chemical trail behind it. When it finds the trail left by another myxamoeba, it follows it, superimposing its own trace signal, and more and more individuals collect together in this way. Under favourable conditions, the myxamoebae agglutinate and stick together to form a "pseudoplasmodium" in which they remain separate individuals but behave as if the whole mass was a single organism. The pseudoplasmodium can move around and in due course develops into a fruiting body called a sporangium, about a third of the cells forming a stalk and the remaining cells forming a ball at the top where they develop into spores.
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Dictyostelium discoideum is social; it aggregates when starved to form a migrating pseudoplasmodium or slug. This multicellular organism eventually will produce a fruiting body with spores that are resistant to environmental dangers. Before the formation of fruiting bodies, the cells will migrate as a slug-like organism for several days. During this time, exposure to toxins or bacterial pathogens has the potential to compromise survival of the species by limiting spore production.
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A petri dish of Dictyostelium. When food (normally bacteria) is readily available dictyostelids behave as individual amoebae, which feed and divide normally. However, when the food supply is exhausted, they aggregate to form a multicellular assembly, called a pseudoplasmodium, grex, or slug (not to be confused with the gastropod mollusc called a slug). The grex has a definite anterior and posterior, responds to light and temperature gradients, and has the ability to migrate.
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As they move toward the signal, they bump into each other and stick together by the use of glycoprotein adhesion molecules. The migration stage begins once the amoebae have formed a tight aggregate and the elongated mound of cells tip over to lie flat on the ground. The amoebae work together as a motile pseudoplasmodium, also known as a slug. The slug is about 2–4 mm long, composed of up to 100,000 cells, and is capable of movement by producing a cellulose sheath in its anterior cells through which the slug moves.
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Each species of slime mold has its own specific chemical messenger, which are collectively referred to as acrasins. These chemicals signal that many individual cells aggregate to form a single large cell or plasmodium. One of the earliest acrasins to be identified was cAMP, found in the species Dictyostelium discoideum by Brian Shaffer, which exhibits a complex swirling- pulsating spiral pattern when forming a pseudoplasmodium. The term acrasin was descriptively named after Acrasia from Edmund Spenser's Faerie Queene, who seduced men against their will and then transformed them into beasts.
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Dictyostelium aggregations on a culture plate Dictyostelium colony in process of aggregation Pseudoplasmodium or "slug" of a Dictyostelium Single amoeboid cell of Dictyostelium, showing the contractile vacuole Dictyostelium is a genus of single- and multi-celled eukaryotic, phagotrophic bacterivores. Though they are Protista and in no way fungal, they traditionally are known as "slime molds". They are present in most terrestrial ecosystems as a normal and often abundant component of the soil microflora, and play an important role in the maintenance of balanced bacterial populations in soils.Landolt. C. (2006) Dictyostelid Cellular Slime Molds from Caves.
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