sorocarpic amoebae (Brown et al., 2011; Brown and Silberman, 2012; Spiegel et al., 2004; Olive, 1975), are amoeboid organisms in which individual amoebae, upon starvation or some other signal, aggregate to form a multicellular fruiting body, … Cellular slime molds are ideally equipped to cope with such environmental fickleness. Ribosomal RNA trees show the myxogastrid and dictyostelid slime molds as unrelated early branching lineages, but actin and β-tubulin trees place them together as a single coherent (monophyletic) group, closely related to the animal–fungal clade. Image Credit: American Physical Society/Adrien Fessel et al. The slime mold model essentially replicated the web of filaments in the dark matter simulation, and the researchers were able to use the simulation to fine-tune the parameters of their model. Evolution Origin and evolution of the slime molds (Mycetozoa) S ... slime molds as unrelated early branching lineages, but actin and b-tubulin trees place them together as a single coherent (monophyletic) group, closely related to the animal–fungal clade. By watching this growth, physicists hope to better understand the analogous development of transportation networks. Plasmodial slime molds, like Physarum shown here, are basically enormous single cells with thousands of nuclei. Slime design mimics Tokyo's rail system: Efficient methods of a slime mold could inform human engineers Date: January 22, 2010 Source: American Association for the Advancement of Science The key difference between slime molds and fungi is their cell wall composition. Ribosomal RNA trees show the myxogastrid and dictyostelid slime molds as unrelated early branching lineages, but actin and β-tubulin trees place them together as a single coherent (monophyletic) group, closely related to the animal–fungal clade. Slime molds may be plasmodial slime molds, which consist of a single, flat, very large cell with many nuclei; or they may be “cellular” slime molds, amoebalike cells that live independently and unite with other cellular slime molds to form a single, large, flat cell with many nuclei. Cellular slime molds, a.k.a. In Fonticula , the process of fruiting starts with aggregation of amoebae to form a mound of cells that secrete a Golgi-derived extracellular matrix that transforms the mound to a tapered, extracellular stalk containing sorogenic (spore forming) cells ( fig. Fonticula’s multicellular organization is unique among cellular slime molds (Olive 1975; Raper 1984). Slime molds have a cell wall composed of cellulose while fungi have a cell wall composed of chitin. For instance, the many species of small fungi, or mold, with their fruiting bodies that are similar to those of slime molds, follow the same survival tactics. There are three main groups of slime molds, which do not form a clade. Slime Mold Evolution A time lapse image of a developing slime mold network. This is also true for other small beasts that live in the soil. Introduction to the "Slime Molds" Long classified together in the Myxomycophyta as part of the Fungi, slime "molds" are now known to be quite unrelated to the fungi. In contrast, fungi are true organisms belonging to the Kingdom Fungi. Many of the genes necessary for these processes in slime mould were inherited by Metazoa (animal with specialized cells) and fashioned through evolution for use within many different modes of development. Slime molds belong to the Kingdom Protista, and they are also called fungus-like protista.