The genome of microalgae pointed to the third branch of green plants

In the group of green plants found a third Department — Prasinodermophyta, reported in Nature Ecology & Evolution. Had previously identified two: Chlorophyta (most of those who are commonly called green algae) and Streptophyta (harovoye and some other algae, and land plants). To isolate the new Department decided according to the results of the analysis of the nuclear genome Prasinoderma coloniale — microscopic algae. It combines the features of a compact genome of ancient microscopic algae of the class Mamiellophyceae and larger and more complex genomes streptophyta algae.

Molecular, morphological and biochemical data of green plants (Viridiplantae; someone thinks their podtsarstvo, someone- the Kingdom) is usually divided into two large groups — Chlorophyta and Streptophyta. In each of them (they have a rank departments) have multicellular and unicellular organisms. Some of them, especially in the group of Chlorophyta, is very strange: their flagella and cell wall is not similar to any typical multicellular and unicellular green algae. Indicate that these organisms (for example, the genera Palmophyllum and Verdigellas) is attributed to a separate group, has long been, but lacked data on nuclear genome unusual chloropetalum.

Researchers from Germany and China led by Michael Melkonian (Melkonian Michael) and Huan Liu (Liu Huan) from the Beijing genomics Institute sequenced the nuclear genome Prasinoderma coloniale — one of the unusual composition of algae in the Chlorophyta. He was compared with the nuclear genomes of different Chlorophyta and streptophyta.

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