Mirbelioids

The Mirbelioids are an informal subdivision of the plant family Fabaceae that includes the former tribes Bossiaeeae and Mirbelieae. They are consistently recovered as a monophyletic clade in molecular phylogenies.[1][3][4][5][6][7][8][9] The Mirbelioids arose 48.4 ± 1.3 million years ago (in the early Eocene).[10] Members of this clade are mostly ericoid (sclerophyllous) shrubs with yellow and red ('egg and bacon') flowers found in Australia, Tasmania, and Papua-New Guinea.[11][12] The name of this clade is informal and is not assumed to have any particular taxonomic rank like the names authorized by the ICBN or the ICPN.[2] Members of this clade exhibit unusual embryology compared to other legumes, either enlarged antipodal cells in the embryo sac or the production of multiple embryo sacs.[3][4][13][14] There has been a shift from bee pollination to bird pollination several times in this clade.[15] Mirbelioids produce quinolizidine alkaloids,[16] but unlike most papilionoids, they do not produce isoflavones.[17] Many of the Mirbelioids have pseudoraceme inflorescences.[18]

Mirbelioids
Mirbelia floribunda
Scientific classification
Kingdom:
Plantae
(unranked):
Angiosperms
(unranked):
Eudicots
(unranked):
Rosids
Order:
Fabales
Family:
Fabaceae
Subfamily:
Faboideae
(unranked):
NPAAA clade
(unranked):
Mirbelioids

Wojciechowski et al. 2004[1][2]
Type genus
Mirbelia Sm.
Genera and Subclades

See text.

Synonyms
  • Bossiaeeae (Benth.) Hutch 1964
  • Genisteae subtribe Bossiaeinae Benth. 1865
  • Mirbelieae (Benth.) Polhill & Crisp 1982
  • Podalyrieae subtribe Mirbeliinae Benth. 1837

Genera

The Mirbelioids have been circumscribed to include the following genera:[5][19]

Giant antipodals group

Multiple embryo-sac group

Basal grade

Callistachys group

Oxylobium grade

Pultenaea group

It has been proposed that many of these genera be subsumed into Pultenaea.[21][22][23]

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References
  1. Wojciechowski MF; Lavin M; Sanderson MJ (2004). "A phylogeny of legumes (Leguminosae) based on analysis of the plastid matK gene resolves many well-supported subclades within the family". Am J Bot. 91 (11): 1846–862. doi:10.3732/ajb.91.11.1846. PMID 21652332.
  2. Wojciechowski MF (2013). "Towards a new classification of Leguminosae: Naming clades using non-Linnaean phylogenetic nomenclature". S Afr J Bot. 89: 85–93. doi:10.1016/j.sajb.2013.06.017.
  3. Crisp MD; Van Wyk B-E (2000). "Molecular phylogeny of the genistoid tribes of papilionoid legumes". In Herendeen PS; Bruneau A; Pollard PS (eds.). Advances in Legume Systematics, Part 9. Royal Botanic Gardens, Kew. pp. 249–276. ISBN 9781842460177.
  4. Crisp MD; Cook LG (2003). "Phylogeny and embryo sac evolution in the endemic Australasian papilionoid tribes Mirbelieae and Bossiaeeae". In Klitgaard BB; Bruneau A (eds.). Advances in Legume Systematics, Part 10: Higher Level Systematics. Royal Botanic Gardens, Kew. pp. 253–268. ISBN 9781842460542.
  5. Cardoso D; Pennington RT; de Queiroz LP; Boatwright JS; Van Wyk B-E; Wojciechowski MF; Lavin M (2013). "Reconstructing the deep-branching relationships of the papilionoid legumes". S Afr J Bot. 89: 58–75. doi:10.1016/j.sajb.2013.05.001.
  6. Cardoso D; de Queiroz LP; Pennington RT; de Lima HC; Fonty É; Wojciechowski MF; Lavin M (2012). "Revisiting the phylogeny of papilionoid legumes: new insights from comprehensively sampled early-branching lineages". Am J Bot. 99 (12): 1991–2013. doi:10.3732/ajb.1200380. PMID 23221500.
  7. McMahon MM; Sanderson MJ (2006). "Phylogenetic supermatrix analysis of GenBank sequences from 2228 papilionoid legumes". Syst Biol. 99 (12): 1991–2013. doi:10.1080/10635150600999150. PMID 17060202.
  8. LPWG [Legume Phylogeny Working Group] (2013). "Legume phylogeny and classification in the 21st century: progress, prospects and lessons for other species-rich clades" (PDF). Taxon. 62 (2): 217–248. doi:10.12705/622.8. hdl:10566/3455.
  9. Doyle JJ; Doyle JL; Ballenger JA; Dickson EE; Kajita T; Ohashi H (1997). "A phylogeny of the chloroplast gene rbcL in the Leguminosae: taxonomic correlations and insights into the evolution of nodulation". Am J Bot. 84 (4): 541–554. doi:10.2307/2446030. JSTOR 2446030. PMID 21708606.
  10. Lavin M; Herendeen PS; Wojciechowski MF (2005). "Evolutionary rates analysis of Leguminosae implicates a rapid diversification of lineages during the tertiary". Syst Biol. 54 (4): 575–94. doi:10.1080/10635150590947131. PMID 16085576.
  11. Crisp MD; Chappill JA; De Kok R; Jobson P (2013). "Kew entry for Mirbelieae". www.kew.org. Royal Botanic Gardens, Kew, London, England. Retrieved 13 January 2016.
  12. Ross JH; Van Wyk B-E (2013). "Kew entry for Bossiaeeae". www.kew.org. Royal Botanic Gardens, Kew, London, England. Retrieved 13 January 2016.
  13. Cameron BG; Prakash N (1990). "Occurrence of giant antipodals in the female gametophytes of Australian Bossiaeeae, Indigofereae, and Mirbelieae (Leguminosae)". Austral J Bot. 38 (4): 395–401. doi:10.1071/BT9900395.
  14. Cameron BG; Prakash N (1994). "Variations of the megagametophyte in the Papilionoideae". In Ferguson IK; Tucker SC (eds.). Advances in Legume Systematics, Part 6: Structural Botany. Royal Botanic Gardens, Kew. pp. 97–115. ISBN 978-0947643782.
  15. Toon A; Cook LG; Crisp MD (2014). "Evolutionary consequences of shifts to bird-pollination in the Australian pea-flowered legumes (Mirbelieae and Bossiaeeae)". BMC Evolutionary Biology. 14 (1): 43. doi:10.1186/1471-2148-14-43. PMC 4015313. PMID 24602227.
  16. Kinghorn AD; Balandrin MF; Lin L-J (1982). "Alkaloid distribution in some species of the papilionaceous tribes Sophoreae, Dalbergieae, Loteae, Brongniartieae, and Bossiaeeae". Phytochemistry. 21 (9): 2269–2275. doi:10.1016/0031-9422(82)85190-X.
  17. Wink M (2013). "Evolution of secondary metabolites in legumes (Fabaceae)". South African Journal of Botany. 89: 164–175. doi:10.1016/j.sajb.2013.06.006.
  18. Tucker SC (2005). "Floral ontogeny of Hardenbergia violacea (Fabaceae: Faboideae: Phaseoleae) and taxa of tribes Bossiaeeae and Mirbelieae, with emphasis on presence of pseudoraceme inflorescences". Aust Syst Bot. 19 (3): 193–210. doi:10.1071/SB05004.
  19. "Mirbelioid s. l.". Legumes of the World. Kew Royal Botanic Gardens. Retrieved January 13, 2017.
  20. Thompson IR (2011). "A revision of Muelleranthus, Ptychosema, and Aenictophyton (Fabaceae: Bossiaeeae)" (PDF). Muelleria. 29 (2): 173–189.
  21. Bickford SA; Laffan SW; de Kok RPJ; Orthia LA (2004). "Spatial analysis of taxonomic and genetic patterns and their potential for understanding evolutionary histories". Journal of Biogeography. 31 (11): 1715–173. doi:10.1111/j.1365-2699.2004.01127.x.
  22. Orthia LA; Cook LG; Crisp MD (2005). "Generic delimitation and phylogenetic uncertainty: An example from a group that has undergone an explosive radiation". Aust Syst Bot. 18 (1): 41–47. doi:10.1071/SB04016.
  23. Orthia LA; Cook LG; Crisp MD; deKok RPJ (2005). "Bush peas: A rapid radiation with no support for monophyly of Pultenaea (Fabaceae: Mirbelieae)". Aust Syst Bot. 18 (2): 133–147. doi:10.1071/SB04028.
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