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The Acrasis genus
was placed in the order (Acrasida) because of its slime mould character together with Pocheina.
However, morphological similarities between Acrasis and members of the
were observed by Page (Page,1978), and a new class Heterolobosea was erected to unite the Schizopyrinida
and Acrasidae (Page & Blanton, 1985). Evidence for this relationship has been obtained by sequence analysis
of glyceraldehyde -3- phopshate dehydrogenase genes from Acrasis rosea and Naegleria
andersoni (Roger et al, 1996).
It remains to be determined if the Pocheina are related to Acrasis or is there is
any relationship between Pocheina and the Heterolobosea.
 Acrasis
locomotion (Rob Insall, University of
Birmingham)
Described
species:-
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| References:-
Cavender, J. C. (1973) Geographical
distribution of Acrasidae. Mycologia. 65, 1044-1054.
Cavender, J. C. & Raper, K. B. (1965) The
Acrasieae in nature. I. Isolation. Am.J.Botany. 52, 294-296.
Cavender, J. C. & Raper, K. B. (1965) The
Acrasieae in nature. II. Forest soil as a primary habitat. Am.J.Botany.
52, 297-302.
Cavender, J. C. & Raper, K. B. (1965) The
Acrasieae in nature. III. Occurrence and distribution in forests of
eastern North America., Am.J.Botany. 65, 302-308.
Page, F.C. (1978).
Acrasis rosea and
the possible relationship between Acrasida and Schizopyrenida. Arch.Protistenk.
120: 169-181.
Page, F.C. & Blanton, R.L. (1985).
The
Heterolobosea (Sarcodina: Rhizopoda), a new class uniting the Schizopyrenida and the
Acrasidae (Acrasida). Protistologica 21: 121-132.
Roger, A.J., Smith, M.W., Doolittle, R.F. &
Doolittle, W.F. (1996). Evidence for the Heterolobosea from phylogenetic analysis of
genes encoding glyceraldehyde-3-phosphate dehydrogenase. J.Euk.Microbiol. 43(6):
475-485.
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