Topic
Disocactus
About: Disocactus is a research topic. Over the lifetime, 2 publications have been published within this topic receiving 34 citations.
Papers
TL;DR: The first comprehensive phylogenetic study of the Hylocereeae sampling 60 out of the 63 currently accepted species and 17 out of 19 infraspecific taxa finds a highly supported core Hylaecreeae clade that also includes Acanthocereus and Peniocereu p.p. , while Strophocactus is depicted as polyphyletic and is resolved outside of theHylokereeae tribe.
Abstract: The tribe Hylocereeae are represented by mainly Central American-Mexican epiphytic, hemi-epiphytic and climbing cacti. They are popular due to their spectacular nocturnal flowers and have some importance as crops grown for their edible fruits. We present the first comprehensive phylogenetic study of the Hylocereeae sampling 60 out of the 63 currently accepted species and 17 out of 19 infraspecific taxa. Based on four plastid regions ( trnK / matK , the rpl16 intron, rps3 - rpl16 , and trnL-F ) we find a highly supported core Hylocereeae clade that also includes Acanthocereus and Peniocereus p.p. , while Strophocactus is depicted as polyphyletic and is resolved outside of the Hylocereeae tribe. The clades found within Hylocereeae agree, in general terms, with the currently accepted genera but none of the genera are entirely monophyletic in their current circumscription. A new concept for the Hylocereeae is presented to include the genera Acanthocereus (incl. Peniocereus p.p. ), Aporocactus , Disocactus , Epiphyllum , Selenicereus (incl. Hylocereus and Weberocereus p.p. ), Pseudorhipsalis , Kimnachia gen. nov., and Weberocereus . New nomenclatural combinations are provided to make these genera monophyletic. The genus Deamia is reinstated for Strophocactus testudo and S. chontalensis , while Strophocactus is newly circumscribed to include S. wittii , Pseudoacanthocereus brasiliensis , and P. sicariguensis . Both genera are excluded from Hylocereeae. A taxonomic synopsis of Hylocereeae is provided.
87 citations
TL;DR: Phylogenetic reconstruction was carried out with data from DNA sequences using the maximum parsimony and Bayesian inference criteria to explore the monophyly of the genus, its subgenera and its position within Hylocereeae and a new circumscription is proposed.
Abstract: The genus Disocactus is native to Mexico and Central America and includes 11 species in four subgenera: D. subg. Ackermannia, D. subg. Aporocactus, D. subg. Disocactus and D. subg. Nopalxochia. Phylogenetic reconstruction was carried out with data from DNA sequences using the maximum parsimony and Bayesian inference criteria to explore the monophyly of the genus, its subgenera and its position within Hylocereeae. Six chloroplast markers (matK, psbA-trnH, rpl16, trnL-F, trnQ-rps16 and ycf1) were sequenced in ten species of Disocactus, 17 representatives from the remaining genera of Hylocereeae and five members of outgroups (Acanthocereus, Lemaireocereus and Pereskia). Our phylogenetic analysis supports neither the monophyly of Disocactus as it is currently defined nor that of the subgenera. The clade Disocactus s.str. was recovered for 13 species, including Epiphyllum anguliger, E. crenatum and E. lepidocarpum. Three subclades were observed within this clade, and three well-supported sister-speci...
27 citations
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Performance Metrics
| Year | Papers |
|---|---|
| 2017 | 1 |
| 2016 | 1 |