Florideophyceae

Class of algae

Florideophyceae
Temporal range: Neoproterozoic–present[1]
Pha.
Proterozoic
Archean
Had.
"Florideae" from Ernst Haeckel's Kunstformen der Natur, 1904
Scientific classification Edit this classification
(unranked): Archaeplastida
Division: Rhodophyta
Subdivision: Eurhodophytina
Class: Florideophyceae
Cronquist, 1960[2]
Subgroups

See text.

Florideophyceae is a class of exclusively multicellular red algae.[3][4] They were once thought to be the only algae to bear pit connections,[5] but these have since been found in the filamentous stage of the Bangiaceae.[6] They were also thought only to exhibit apical growth, but there are genera known to grow by intercalary growth.[6] Most, but not all, genera have three phases to the life cycle.[6]

Classification

A Laurencia red alga from Hawaii

There are various classification schemes; see red algae. One option is to use the following:

Subclass Hildenbrandiophycidae

  • Hildenbrandiales

Subclass Nemaliophycidae

Subclass Corallinophycidae

The subclass Corallinophycidae was introduced in 2007.[7]

Subclass Ahnfeltiophycidae

Subclass Rhodymeniophycidae

According to molecular clock analysis, Florideophyceae diverged from other red algae about 943 (817–1,049) million years ago. It split into Hildenbrandiophycidae ca. 781 (681–879) mya, Nemaliophycidae ca. 661 (597–736) mya and Corallinophycidae ca. 579 (543–617) mya, and ca. 508 (442–580) mya the split between Ahnfeltiophycidae and Rhodymeniophycidae occurred.[1]

References

  1. ^ a b Divergence time estimates and the evolution of major lineages in the florideophyte red algae - Nature
  2. ^ Cronquist, A. (1960). "The divisions and classes of plants". The Botanical Review. 26 (4): 425–482. doi:10.1007/BF02940572. S2CID 43144314.
  3. ^ Yoon, Hwan Su; Muller, Kirsten M.; Sheath, Robert G.; Ott, Franklyn D.; Bhattacharya, Debashish (April 2006). "Defining the Major Lineages of Red Algae (Rhodophyta)1". Journal of Phycology. 42 (2): 482–492. doi:10.1111/j.1529-8817.2006.00210.x. ISSN 0022-3646. S2CID 27377549.
  4. ^ Signatures of Transcription Factor Evolution and the Secondary Gain of Red Algae Complexity - NCBI
  5. ^ Dawes, C. J.; Scott, F. M.; Bowler, E. (1961). "A Light- and Electron-Microscopic Survey of Algal Cell Walls. I. Phaeophyta and Rhodophyta". American Journal of Botany. 48 (10): 925–934. doi:10.2307/2439535. JSTOR 2439535.
  6. ^ a b c Lee, R.E. (2008). Phycology, 4th edition. Cambridge University Press. ISBN 978-0-521-63883-8.
  7. ^ Le Gall L, Saunders GW (June 2007). "A nuclear phylogeny of the Florideophyceae (Rhodophyta) inferred from combined EF2, small subunit and large subunit ribosomal DNA: establishing the new red algal subclass Corallinophycidae". Mol. Phylogenet. Evol. 43 (3): 1118–30. doi:10.1016/j.ympev.2006.11.012. PMID 17197199.

External links

  • Tree of Life: Florideophyceae
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Classification of Archaeplastida or Plantae s.l.
Domain
Archaea
Bacteria
Eukaryota
(major groups
Excavata
Diaphoretickes
Hacrobia
Rhizaria
Alveolata
Stramenopiles
Plants
Amorphea
Amoebozoa
Opisthokonta
Animals
Fungi)
Archaeplastida
Picozoa
Rhodelphidia
Rhodophyta
(red algae)
Glaucophyta
incertae sedis
Viridiplantae
or Plantae s.s.
(green algae &
land plants)
Prasinodermophyta
 Chlorophyta
Prasinophytina
Chlorophytina
Streptophyta
Phragmoplastophyta
Anydrophyta
Embryophyta
(land plants)
  • (see below↓)
Embryophytes or Plantae sensu strictissimo
Bryophytes
Marchantiophyta
(liverworts)
Anthocerotophyta
(hornworts)
Bryophyta
(mosses)
 Polysporangiophytes
†Protracheophytes*
Tracheophytes
(vascular plants)
†Paratracheophytes*
Eutracheophytes
Lycophytes
Euphyllophytes
Moniliformopses
Lignophytes
†Progymnosperms*
  • †Noeggerathiopsida
  • †Aneurophytopsida
  • †Archaeopteridopsida
  • †Protopityales
Spermatophytes
(seed plants)
†Pteridosperms*
(seed ferns)
and other extinct
seed plant groups
Acrogymnospermae
(living gymnosperms)
Angiospermae
(flowering plants)
Taxon identifiers
Florideophyceae