On the biology, biogeography, and taxonomy of<i>Arachnitis</i>Phil. nom. cons.<i>(Corsiaceae)</i>in respect to a new record from Bolivia

Ibisch, Pierre L.; Neinhuis, Christoph; Rojas, Nadia

doi:10.3372/wi.26.2616

Cited by 22 publications

(16 citation statements)

References 4 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…The temperate genus Arachnitis Phil. (one or two species) is found in southern South America, including the Falkland Islands, and reaches the northern limit of its distribution in Bolivia (Ibisch et al, 1996;Neinhuis & Ibisch, 1998). The poorly known and monotypic genus Corsiopsis D.X.…”

Section: Introductionmentioning

confidence: 99%

Ancient Gondwana break‐up explains the distribution of the mycoheterotrophic family Corsiaceae (Liliales)

Mennes

Lam

Rudall

et al. 2015

Journal of Biogeography

View full text Add to dashboard Cite

Aim Many plant families have a disjunct distribution across the southern Pacific Ocean, including the mycoheterotrophic family Corsiaceae, which provides a prime example of this biogeographical pattern. A better grasp of the family's evolutionary relationships is needed to understand its historical biogeography. We therefore aimed to (1) test the uncertain monophyly of Corsiaceae, (2) define its phylogenetic position, and (3) estimate divergence times for the family, allowing us to assess whether the distribution of the family is the result of vicariance.Location Southern South America and Australasia.Methods We analysed various combinations of mitochondrial and nuclear data to address the monophyly, phylogenetic position and age of Corsiaceae. To test its monophyly, we used a three-locus data set including most monocot orders, and to infer its exact phylogenetic position, we used a five-locus extended data set. We corroborated these findings using an independent plastome dataset. We then used a two-locus dataset with taxa from all monocot orders, and a three-locus dataset containing only taxa of Liliales, to estimate divergence times using a fossil-calibrated uncorrelated lognormal relaxed-clock approach.Results Corsiaceae is a monophyletic family and the sister group of Campynemataceae. This clade is the sister group of all other Liliales. The crown age of Corsiaceae is estimated to be 53 Ma (95% confidence interval 30-76 Ma).Main conclusions Corsiaceae is an ancient family of mycoheterotrophic plants, whose crown age overlaps with the plate-tectonic split of Gondwana, consistent with a vicariance-based explanation for its current distribution.

show abstract

Section: Introductionmentioning

confidence: 99%

Ancient Gondwana break‐up explains the distribution of the mycoheterotrophic family Corsiaceae (Liliales)

Mennes

Lam

Rudall

et al. 2015

Journal of Biogeography

View full text Add to dashboard Cite

show abstract

“…About 28 species in the family are restricted to Australasia and South America (Van Royen 1972;Cribb 1985;Cribb et al 1995;Ibisch 1996;Zhang and Saunders 1999;Jones and Gray 2008). The majority of species are found in Papua New Guinea (Corsia Becc.…”

Section: Introductionmentioning

confidence: 99%

“…Zhang, R.M.K. Saunders & C.M Hu) (Van Royen 1972;Ibisch 1996;Zhang and Saunders 1999;Jones and Gray 2008). The family has closed sheathed leaves, single zygomorphic terminal flowers, a single large labellum with five long tepals (total of six), extrose anthers, and an inferior ovary (Rudall and Eastman 2002;Jones and Gray 2008).…”

Section: Introductionmentioning

confidence: 99%

“…Intrafamilial circumscriptions are based largely on morphological variations within floral organs and the single large labellum formed from the outer median tepal (Van Royen 1972;Jones and Gray 2008). In Arachnitis, the labellum is flexed and twisted forward to cover the anthers and ovary (Ibisch 1996). In Corsia, the labellum is held over the floral organs like an umbrella, while in Corsiopsis, the labellum is bladderlike, forming a hood (Zhang and Saunders 1999;Jones and Gray 2008).…”

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

Phylogenetic Inferences and the Evolution of Plastid DNA in Campynemataceae and the Mycoheterotrophic Corsia dispar D.L Jones & B. Gray (Corsiaceae)

Bodin

Kim

2015

Plant Mol Biol Rep

View full text Add to dashboard Cite

The phylogenetic positions of the families Campynemataceae and Corsiaceae within the order Liliales remains unclear. To date, molecular data from the plastid genome of Corsiaceae has been obtained exclusively from Arachnitis, for which alignment and phylogenetic inference has proved difficult. The extent of gene conservation among mycoheterotrophic species within Corsiaceae remains unknown. To clarify the phylogenetic position of Campynemataceae and Corsiaceae within Liliales, functional plastid-coding genes of species representing both families have been analyzed. Examination of two phylogenetic data sets of plastid genes employing parsimony, maximum-likelihood, and Bayesian inference methods strongly supported both families forming a basal clade to the remaining taxa of Liliales. The first data set consists of five functional plastid-encoded genes (mat-K, rps7, rps2, rps19, and rpl2) sequenced from Corsia dispar (Corsiaceae). The data set included 31 species representing all families within Liliales, as well as selected orders that are related closely to Liliales (10 outgroup species from Asparagales, Dioscoreales, and Pandanales). The second phylogenetic analysis was based on 75 plastid genes. This data set included 18 species from Liliales, representing major clades within the order, and 10 outgroup species from Asparagales, Dioscoreales, and Pandanales. In this latter data set, Campynemataceae was represented by 60 plastid-encoded genes sequenced from herbarium material of Campynema lineare. A large proportion of the plastid genome of C. dispar was also sequenced and compared to the plastid genomes of photosynthetic plants within Liliales and mycoheterotrophic plants within Asparagales to explore plastid genome reduction. The plastid genome of C. dispar is in the advanced stages of reduction, which signifies its high dependency on mycorrhizal fungi and is suggestive of a loss in photosynthetic ability. Functional plastid genes found in C. dispar may be applicable to other species in Corsiaceae, which will provide a basis for in-depth molecular analyses of interspecies relationships within the family, once molecular data from other members become available.

show abstract

“…Clumped root/rhizome systems also occur in achlorophyllous orchids (e.g. McKendrick et al ., 2002) and Corsiaceae (Minoletti, 1986; Ibisch, Neinhuis & Rojas, 1996). In fact, Triuridaceae has been the only one of the families containing several mycoheterotrophic species (Leake, 1994) that did not include a representative with root abbreviation.…”

Section: Discussionmentioning

confidence: 99%

Morphology and development of the subterranean organs of the achlorophyllous Sciaphila polygyna (Triuridaceae)

Imhof¹

2004

Botanical Journal of the Linnean Society

View full text Add to dashboard Cite

The subterranean organs of the achlorophyllous Sciaphila polygyna (Triuridaceae) are described, depicted, and structurally explained for the first time. Unlike other Triuridaceae, the subterranean system of S. polygyna appears as a complex star-like structure of short, but thickened, roots as well as scale leaves and shoots. A complete series of sections revealed the following construction. In the axil of a scale leaf at a shoot of first order, a side shoot of second order as well as a pair of endogenous shoot-borne roots arise. This side shoot of second order also develops a scale leaf very early in ontogeny, which again gives rise to a side shoot of third order and a pair of shoot-borne roots. Other scale leaves at shoots of any order may also bear shoots and root pairs. This growth pattern occurs in a very close manner without internode elongation, resulting in the clumped, star-like appearance. The structures described superficially resemble the root systems of many mycoheterotrophic plants from other families. Comparisons with respect to how they develop, however, show that these similar root systems can result from distinct developmental patterns, suggesting independent evolutionary pathways and a considerable evolutionary pressure towards abbreviated and thickened roots in mycoheterotrophic plants. Possible advantages as well as evolutionary implications of the structures described are discussed.

show abstract

On the biology, biogeography, and taxonomy ofArachnitisPhil. nom. cons.(Corsiaceae)in respect to a new record from Bolivia

Cited by 22 publications

References 4 publications

Ancient Gondwana break‐up explains the distribution of the mycoheterotrophic family Corsiaceae (Liliales)

Ancient Gondwana break‐up explains the distribution of the mycoheterotrophic family Corsiaceae (Liliales)

Phylogenetic Inferences and the Evolution of Plastid DNA in Campynemataceae and the Mycoheterotrophic Corsia dispar D.L Jones & B. Gray (Corsiaceae)

Morphology and development of the subterranean organs of the achlorophyllous Sciaphila polygyna (Triuridaceae)

Contact Info

Product

Resources

About