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Citation for Study 22882

Citation title: "From tree tops to the ground: reversals to terrestrial habit in Galeandra orchids (Epidendroideae: Catasetinae)".

Study name: "From tree tops to the ground: reversals to terrestrial habit in Galeandra orchids (Epidendroideae: Catasetinae)".

This study is part of submission 22882 (Status: Published).

Citation

Martins A.C., Bochorny T., P?rez-escobar O.A., Chomicki G., Monteiro S., & Smidt E.D. 2018. From tree tops to the ground: reversals to terrestrial habit in Galeandra orchids (Epidendroideae: Catasetinae). Molecular Phylogenetics and Evolution, .

Authors

• Martins A.C. 005561998587066
• Bochorny T. 3479649612
• P?rez-escobar O.A.
• Chomicki G.
• Monteiro S.
• Smidt E.D. 55-41-3361-1620

Abstract

The colonization of the epiphytic niche of Neotropical forest canopies played an important role in orchid?s extraordinary diversification, with rare reversions to the terrestrial habit. To understand the evolutionary context of those reversals, we investigated the diversification of Galeandra, a Neotropical orchid genus which includes epiphytic and terrestrial species. We hypothesized that reversion to the terrestrial habit accompanied the expansion of savannas. To test this hypothesis we generated a comprehensive time-calibrated phylogeny and employed comparative methods. We found that Galeandra originated towards the end of the Miocene in Amazonia. The terrestrial clade originated synchronously with the rise of dry vegetation biomes in the last 5 million years, suggesting that aridification dramatically impacted plant diversification and habits in the Neotropics. Shifts in habit impacted floral spur lengths and geographic range size, but not climatic niche. The longer spurs and narrower ranges characterize epiphytic species, which probably adapted to specialized long-tongued Euglossini bee pollinators inhabiting forested habits. The terrestrial species present variable floral spurs and wider distribution ranges, with evidence of self-pollination, suggesting the loss of specialized pollination system and concomitant range expansion. Our study highlights how climate change impacted habit evolution and associated traits such as mutualistic interactions with pollinators.

External links

• DOI: 10.1016/j.ympev.2018.06.041

About this resource

• Canonical resource URI: http://purl.org/phylo/treebase/phylows/study/TB2:S22882
• Other versions: Nexus NeXML
• Show BibTeX reference

  		@ARTICLE{TreeBASE2Ref28539,
  	 author = {Aline Cristina Martins and Thuane  Bochorny and Oscar Alejandro P?rez-Escobar and Guillaume  Chomicki and Silvana Helena Nascimento  Monteiro and Eric de Camargo Smidt},
  	 title = {From tree tops to the ground: reversals to terrestrial habit in Galeandra orchids (Epidendroideae: Catasetinae)},
  	 year = {2018},
  	 keywords = {},
  	 doi = {10.1016/j.ympev.2018.06.041},
  	 url = {http://},
  	 pmid = {},
  	 journal = {Molecular Phylogenetics and Evolution},
  	 volume = {},
  	 number = {},
  	 pages = {},
  	 abstract = {The colonization of the epiphytic niche of Neotropical forest canopies played an important role in orchid?s extraordinary diversification, with rare reversions to the terrestrial habit. To understand the evolutionary context of those reversals, we investigated the diversification of Galeandra, a Neotropical orchid genus which includes epiphytic and terrestrial species. We hypothesized that reversion to the terrestrial habit accompanied the expansion of savannas. To test this hypothesis we generated a comprehensive time-calibrated phylogeny and employed comparative methods. We found that Galeandra originated towards the end of the Miocene in Amazonia. The terrestrial clade originated synchronously with the rise of dry vegetation biomes in the last 5 million years, suggesting that aridification dramatically impacted plant diversification and habits in the Neotropics. Shifts in habit impacted floral spur lengths and geographic range size, but not climatic niche. The longer spurs and narrower ranges characterize epiphytic species, which probably adapted to specialized long-tongued Euglossini bee pollinators inhabiting forested habits. The terrestrial species present variable floral spurs and wider distribution ranges, with evidence of self-pollination, suggesting the loss of specialized pollination system and concomitant range expansion. Our study highlights how climate change impacted habit evolution and associated traits such as mutualistic interactions with pollinators.}
  }
  		

• Show RIS reference

  		TY  - JOUR
  ID  - 28539
  AU  - Martins,Aline Cristina
  AU  - Bochorny,Thuane 
  AU  - P?rez-Escobar,Oscar Alejandro
  AU  - Chomicki,Guillaume 
  AU  - Monteiro,Silvana Helena Nascimento 
  AU  - Smidt,Eric de Camargo
  T1  - From tree tops to the ground: reversals to terrestrial habit in Galeandra orchids (Epidendroideae: Catasetinae)
  PY  - 2018
  KW  - 
  UR  - http://dx.doi.org/10.1016/j.ympev.2018.06.041
  N2  - The colonization of the epiphytic niche of Neotropical forest canopies played an important role in orchid?s extraordinary diversification, with rare reversions to the terrestrial habit. To understand the evolutionary context of those reversals, we investigated the diversification of Galeandra, a Neotropical orchid genus which includes epiphytic and terrestrial species. We hypothesized that reversion to the terrestrial habit accompanied the expansion of savannas. To test this hypothesis we generated a comprehensive time-calibrated phylogeny and employed comparative methods. We found that Galeandra originated towards the end of the Miocene in Amazonia. The terrestrial clade originated synchronously with the rise of dry vegetation biomes in the last 5 million years, suggesting that aridification dramatically impacted plant diversification and habits in the Neotropics. Shifts in habit impacted floral spur lengths and geographic range size, but not climatic niche. The longer spurs and narrower ranges characterize epiphytic species, which probably adapted to specialized long-tongued Euglossini bee pollinators inhabiting forested habits. The terrestrial species present variable floral spurs and wider distribution ranges, with evidence of self-pollination, suggesting the loss of specialized pollination system and concomitant range expansion. Our study highlights how climate change impacted habit evolution and associated traits such as mutualistic interactions with pollinators.
  L3  - 10.1016/j.ympev.2018.06.041
  JF  - Molecular Phylogenetics and Evolution
  VL  - 
  IS  - 
  ER  -