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BOOK REVIEWS: Syllabus of Plant Families. A. Engler's Syllabus der Pflanzenfamilien, 13th edition. Part 2/1: Photoautotrophic Eukaryotic Algae. Glaucocystophyta, Cryptophyta, Dinophyta/Dinozoa, Haptophyta, Heterokontophyta/Ochrophyta, Chlorarachniophyta/ Cercozoa, Euglenophyta/Euglenozoa, Chlorophyta, Streptophyta p.p

Mann, David G

Edinburgh Journal of Botany, 2017, Vol.74 (3), p.366 [Periódico revisado por pares]

Edinburgh: Royal Botanic Garden Edinburgh

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  • Título:
    BOOK REVIEWS: Syllabus of Plant Families. A. Engler's Syllabus der Pflanzenfamilien, 13th edition. Part 2/1: Photoautotrophic Eukaryotic Algae. Glaucocystophyta, Cryptophyta, Dinophyta/Dinozoa, Haptophyta, Heterokontophyta/Ochrophyta, Chlorarachniophyta/ Cercozoa, Euglenophyta/Euglenozoa, Chlorophyta, Streptophyta p.p
  • Autor: Mann, David G
  • Assuntos: Algae ; Bacillariophyta ; Cercozoa ; Charophyceae ; Chlorophyta ; Cyanobacteria ; Dinophyta ; Euglenozoa ; Eustigmatophyceae ; Flowers & plants ; Fungi ; Haptophyta ; Ochrophyta ; Phaeophyceae ; Trentepohliales ; Ulvophyceae
  • É parte de: Edinburgh Journal of Botany, 2017, Vol.74 (3), p.366
  • Descrição: Alternatively, if the idea was to maintain an essentially physiological approach (i.e. to maintain the concept of 'plantness', which is of course still valuable ecologically and is inherent in the international codes of nomenclature that govern the naming of taxa, even though 'plants' and 'algae' are not monophyletic groups), why separate the free-living blue-green algae from their endosymbiotic relatives, the chloroplasts of eukaryotic autotrophs, and why include any exclusively heterotrophic groups? Whereas the green land plants (bryophytes + tracheophytes) are a monophyletic group that can be classified hierarchically and the subgroups named according to the rules of a single international code (for 'algae, fungi and plants'), the various kinds of green, blue-green, red, yellow and brown algae are in many cases less related to each other than to phagotrophic or osmotrophic organisms traditionally regarded as 'animals' (including 'protozoa') or 'fungi'. [...]although there is evidence for three groupings within the heterokontophytes (the SI clade, comprising Raphidophyceae, Chrysomerophyceae, Aureanophyceae, Xanthophyceae, Schizocladiophyceae, Phaeophyceae and Phaeothamniophyceae; the SII clade, comprising Eustigmatophyceae, Chrysophyceae [including Synurophyceae], Pinguiophyceae, Synchromophyceae and Picophagea; and the SIII clade, comprising Pelagophyceae, Dictyochophyceae, Bacillariophyceae and Bolidophyceae), relationships within each clade are still unclear (see Yang et al., 2012, fig. 1 and discussion). Whereas land plants all adhere to more or less the same life cycle rules (alternation of haploid and diploid generations), have similar cell structure (with two membranes around their chloroplasts, thylakoids stacked into grana, monotonously similar light-harvesting machinery, mitochondria with cristae, smooth flagella [where present] asymmetrically inserted, etc.) and cell division (via a phragmoplast), not to mention the ubiquitous cuticle, the 'algae' vary in every respect. Besides demonstrating the variety and complexities of 'algae', the Synopsis lists genera and places them in a hierarchy, gives an indication of species numbers (I could not find an explanation of how these were obtained; it must have involved a lot of online searches), and provides an entry to the taxonomic literature on each group.
  • Editor: Edinburgh: Royal Botanic Garden Edinburgh
  • Idioma: Inglês
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  • Realização: ABCD-USP USP   Logos de Redes Sociais: Freepik

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