[The phenotypic traits of Mollicutes as their possible phylogenetic markers].
Interaction of cells of mollicutes Acholeplasma laidlawii PG 8, A. laidlawii var. granulum 18, Mycoplasma hominis PG 21, M. pneumoniae FH, M. fermentans PG 118 and their extracellular products with different carbohydrates, plant lectins of different carbohydrate specificity with glycocalix carbohydrates of the same microorganisms has been studied. Basing on this study and data from literature a conclusion is made that such phenotypical characteristics as the ability to form extracellular fructose-1.6-diphosphate specific lectin and N-acetylneuraminic acid as the end sugar in the composition of carbohydrates of mollicute glycocalyx can serve a phylogenetic marker. These markers indicate the possible origin of mollicutes from bacteria of the group Bacillus-Lactobacillus-Streptococcus as a result of degenerative evolution and are their rather stable characteristics. Such marker as extracellular lectin specific to fructoso-1.6-diphosphate which is formed by phytopathogenic mollicute A. laidlawii var. granulum, 118 evidences that in spite of genetic affinity of this "yellow" agent of cereals with A. laidlawii, it does not descend from the last ancestor directly, but they probably have some general ancestor. We do not know yet this ancestor which is a link in the evolution chain of acholeplasmas in the process of their origin from the mentioned group of bacteria. It is supposed that these markers together with such known phylogenetic markers as lactate dehydrogenase which is activated by fructoso-1.6-diphosphate, and aldolases and glycolipids with specific properties can additionally evidence for the origin of mollicutes and their affinity to certain groups of microorganisms.
Skrypal'
I H
IH
Onyshchenko
A M
AM
Malynovs'ka
L P
LP
Tokovenko
I P
IP
Havrylko
L O
LO
D006597:Fructose-Bisphosphatase / Q000378:metabolism; D005819:Genetic Markers; D037102:Lectins / Q000378:metabolism; D019158:N-Acetylneuraminic Acid; D010641:Phenotype; D010802:Phylogeny; D012794:Sialic Acids / Q000378:metabolism; D008973:Tenericutes / Q000235:genetics* / Q000378:metabolism
D005819:Genetic Markers; D037102:Lectins; D012794:Sialic Acids; D006597:Fructose-Bisphosphatase; D019158:N-Acetylneuraminic Acid
Deiaki fenotypovi oznaky molikutiv iak ïkh mozhlyvi filohenetychni markery.