词条 | Acrasidae |
释义 |
| name = Acrasid slime molds | image = Acrasis rosea 31095.jpg | image_caption = Acrasis rosea | taxon = Acrasidae | display_parents = 5 | subdivision_ranks = Genus | subdivision =
}} The family Acrasidae (ICZN, or Acrasiomycota, ICBN) is a family[1] of slime molds which belongs to the protist group Percolozoa. The name acrasio- comes from the Greek Akrasia, meaning "acting against one's judgement". This group consists of cellular slime molds. Some would also consider it as a kingdom unto itself, but the debate is as yet unsettled. The terms "Acrasiomycota" or "Acrasiomycetes" have been used when the group was classified as a fungus ("-mycota"). In some classifications, Dictyostelium was placed in Acrasiomycetes, an artificial group of cellular slime molds, which was characterized by the aggregation of individual amoebae into a multicellular fruiting body, making it an important factor that related the acrasids to the dictyostelids.[2] ReproductionWhen resources such as water or food become limiting, the amoeba will release pheromones such as acrasin to aggregate amoebal cells in preparation for movement as a large (thousands of cells) grex or pseudopod. When in the grex, the amoeboids reproduce, resulting in fruit-like structures called spores, which develop into unicellular molds of the same species. References1. ^{{cite journal |vauthors=Roger AJ, Smith MW, Doolittle RF, Doolittle WF |title=Evidence for the Heterolobosea from phylogenetic analysis of genes encoding glyceraldehyde-3-phosphate dehydrogenase |journal=J. Eukaryot. Microbiol. |volume=43 |issue=6 |pages=475–85 |year=1996 |pmid=8976605 |doi= 10.1111/j.1550-7408.1996.tb04507.x|url=}} 2. ^{{cite journal |author1=Cavender J.C. |author2=Spiegl F. |author3=Swanson A. | year = 2002 | title = Taxonomy, slime molds, and the questions we ask | url = | journal = The Mycological Society of America | volume = 94| issue = 6| pages = 968–979 |pmid=21156570}}
2 : Percolozoa|Excavata families |
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