Biology:Diurideae

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Diurideae is a tribe of orchid in the subfamily Orchidoideae. The tribe has a centre of diversity in Australia, with occasional dispersals to New Zealand, New Calendonia, Papua New Guinea, and Malesia. [1][2]

Infratribal classification

While Diurideae itself is a well-supported clade, relationships among its constituent subtribes remain equivocal, likely due to the confounding effects of incomplete lineage sorting. [1] The tribe has previously been subdivided into nine subtribes: Acianthinae; Caladeniinae; Cryptostylidinae; Diuridinae; Drakaeinae; Megastylidinae; Prasophyllinae; Rhizanthellinae; and Thelymitrinae.[2] However, phylogenomic analyses have shown that Megastylidinae is best subsumed into an expanded Drakaeinae.[1] Rhizanthellinae has also been treated as a synonym of Prasophyllinae. [2][1]

Evolution and Ecology

The tribe is estimated to have originated in the Eocene (c. 52Ma), with a crown age of c. 46 Ma. [1] The tribe is known for an unusually high number of species which engage in sexually deceptive pollination, particularly in the subtribes Caladeniinae and Drakaeinae.[2][3] Additionally, members of the Diurideae appear to have a high degree of fungal symbiont specificity, with orchid species partnering with an average of only one to two fungal species. [1][4]

Genera

Diurideae contains about 40 accepted genera.[5] Chase et al. (2015) accepted the following genera.[5] Some have since been combined.

References

  1. ↑ 1.0 1.1 1.2 1.3 1.4 1.5 O'Donnell, RP; Wong, DCJ; Phillips, RD; Peakall, R; Linde, CC (2024). "Discordance Down Under: Combining phylogenomics and fungal symbioses to detangle difficult nodes in a diverse tribe of Australian terrestrial orchids". Systematic Biology 74 (3): 434–452. doi:10.1093/sysbio/syae070. https://doi.org/10.1093/sysbio/syae070. 
  2. ↑ 2.0 2.1 2.2 2.3 Weston, P; Perkins, A; Indsto, J; Clements, M (2014). "Phylogeny of Orchidaceae tribe Diurideae and its implications for the evolution of pollination systems". in Edens-Meier, R; Bernhardt, P. Darwin's Orchids: Then and Now. University of Chicago Press. pp. 91-154. ISBN 978-0-226-04491-0. https://academic.oup.com/chicago-scholarship-online/book/22851. 
  3. ↑ Peakall, R (2023). "Pollination by sexual deception". Current Biology 33 (11): R489–R496. doi:10.1016/j.cub.2023.02.066. https://www.cell.com/current-biology/abstract/S0960-9822(23)00239-7. 
  4. ↑ Warcup, JH (1981). "The mycorrhizal relationships of Australian orchids". New Phytologist 87 (2): 371–381. doi:10.1111/j.1469-8137.1981.tb03208.x. https://onlinelibrary.wiley.com/doi/10.1111/j.1469-8137.1981.tb03208.x. 
  5. ↑ 5.0 5.1 Chase, M.W.; Cameron, K.M.; Freudenstein, J.F.; Pridgeon, A.M.; Salazar, G.; van den Berg, C.; Schuiteman, A. (2015), "An updated classification of Orchidaceae", Botanical Journal of the Linnean Society 177 (2): 151–174, doi:10.1111/boj.12234 
  6. ↑ "Caladenia". World Checklist of Selected Plant Families (WCSP). Royal Botanic Gardens, Kew. http://wcsp.science.kew.org/namedetail.do?name_id=28433. 
  7. ↑ "Paracaleana". World Checklist of Selected Plant Families (WCSP). Royal Botanic Gardens, Kew. http://wcsp.science.kew.org/namedetail.do?name_id=147406. 

Wikidata ☰ Q15504083 entry




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