Especies arborescentes del género &lt;i&gt;Blechnum&lt;/i&gt; (Blechnaceae: Pteridophyta)

Rolleri, Cristina Hilda; Prada, Cármen; Galán, José María Gabriel y; Passarelli, Lilian Mónica

doi:10.15517/rbt.v61i1.11136

Cited by 6 publications

(5 citation statements)

References 23 publications

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“…Even though we were not able to include all species considered to belong to the genus, we nonetheless have the largest sampling of the genus of any study to date, and have included at least one representative from each of the geographical regions in which Lomaridium occurs. Consequently, we believe we have established the monophyly of the group with greater confidence than in previous studies that were based on much more limited sampling of Lomaridium (Gabriel y Galán & al., 2013;Perrie & al., 2014;.…”

Section: Discussionsupporting

confidence: 60%

“…Among these, there is another Blechnaceae species, Lomariocycas tabularis (Thunb.) Gasper & A.R.Sm., which has a disjunct distribution in both continents (Moran & Smith, 2001;Rolleri & al., 2013). The biogeographical hypotheses proposed to explain these patterns typically invoke long-dispersal events, mostly from the Neotropics to Africa (Moran & Smith, 2001), which is congruent with our results for Lomaridium.…”

Section: Discussionmentioning

confidence: 99%

“…-Total DNA was extracted from dried material (≈ 20 mg) with a DNeasy Plant Mini Kit (Qiagen, Valencia, California, U.S.A.) following the manufacturer's protocols. PCR was used to amplify three plastid regions that have previously been used in the evaluation of fern species relationships (Li & Lu, 2006;De Groot & al., 2011;Li & al., 2011;Gabriel y Galán & al., 2013).…”

Section: Methodsmentioning

confidence: 99%

“…The primers used and reaction conditions were the following. For trnLtrnF: Fern1/F (Taberlet & al., 1991;Gabriel y Galán & al., 2013); 35 cycles of (1 min 94°C, 1 min 55°C, 1 min 30 s 72°C), followed by 6 min 72°C. For rps4trnS: F/R (Li & Lu, 2006); 38 cycles of (2 min 94°C, 40 s 42°C, 1 min 30 s 72°C), followed by 7 min 72°C.…”

Section: Methodsmentioning

confidence: 99%

“…Traditionally, the family contained 9-10 genera, with the large genus Blechnum L. comprising almost 80% of the diversity. However, many recent studies focusing on specific groups of species (Rolleri & Prada, 2006;Passarelli & al., 2010;Rolleri & al., 2012Rolleri & al., , 2013Dittrich & al., 2015) and all recent phylogenies of the family (Shepherd & al., 2007;Gabriel y Galán & al., 2013;Perrie & al., 2014; have shown that there is widespread paraphyly and disparity of characters among Blechnum species. As a result, the genus has recently been split into several entities, and a total of 24 genera have been proposed to be recognized in Blechnaceae (Gasper & al., 2016;PPG I, 2016).…”

Section: Introductionmentioning

confidence: 99%

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Phylogenetics and historical biogeography of Lomaridium (Blechnaceae: Polypodiopsida)

Vicent

Galán

Sessa

2017

TAXON

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Blechnaceae is a worldwide family of leptosporangiate ferns composed of about 250 species. Most of the species in the family were recognised under a single large genus Blechnum until recently, when a new classification proposed the recognition of 24 genera. Given this new systematics of Blechnaceae, which largely resolves the genus‐level relationships in the family, there is a need for phylogenetic research to investigate relationships within the majority of the newly proposed genera. In this paper, we unravel the phylogenetic relationships and the historical biogeography of the species of Lomaridium, a genus including most of the hemiepiphytic species in the Blechnaceae. Our sampling includes 11 species, which represents 85% of the diversity in the genus and which covers the entire geographic distribution of the group. We constructed two datasets with three plastid markers: one for phylogenetic analyses (maximum likelihood, Bayesian inference) with four outgroups from phylogenetically close genera (Brainea, Lomaria, Sadleria, Woodwardi); and a second for molecular dating and historical biogeographic analyses that included a larger set of outgroups so that we could accurately reconstruct ancestral events at the base of Lomaridium, under different models. We are able to recognize four highly supported lineages: L. contiguum and the L. schottii, L. attenuatum, and L. fragile clades. Our results date the origin of Lomaridium at some point during the Paleocene epoch, and the most likely geographic area for its origin is Australia plus tropical Central and South America. Several dispersal events are inferred, all of which are most likely long‐distance dispersal events. From Australia, we infer a first dispersal event that brought the ancestor of the extant species L. contiguum to New Caledonia. In Central and South America, Lomaridium continued to diversify and colonized additional areas, including the Caribbean (L. binervatum), some Pacific islands (L. schottii), and Africa and Madagascar. While our goal in the current study was not to estimate the biogeographic or diversification history of all Blechnaceae, our analyses do suggest that the early history of the family was complex biogeographically, with extensive long‐distance dispersal events. Lomaridium exemplifies this high dispersal capacity, as a genus with only a modest number of species that have reached far‐flung regions of the globe via numerous long‐distance dispersal events.

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Section: Discussionsupporting

confidence: 60%

Section: Discussionmentioning

confidence: 99%

Section: Methodsmentioning

confidence: 99%

Section: Methodsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Phylogenetics and historical biogeography of Lomaridium (Blechnaceae: Polypodiopsida)

Vicent

Galán

Sessa

2017

TAXON

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Ferns from the Arroyo Chacay flora (Huitrera Formation, Eocene) Río Negro Province, Argentina

Machado

Passalia

Vera

et al. 2023

Review of Palaeobotany and Palynology

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Fern Flora of Viçosa, Minas Gerais State, Brazil: Blechnaceae (Polypodiopsida)

Medeiros,

Schwartsburd

2023

Hoehnea

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We present the taxonomic treatment of the fern family Blechnaceae for the Flora of Viçosa, based on typology, morphology, and field observations. We report the occurrence of seven species and two putative hybrids, belonging to three genera: Blechnum appendiculatum, B. ×caudatum, B. ×confluens, B. gracile, B. aff. juergensii, B. occidentale, B. polypodioides, Neoblechnum brasiliense, and Parablechnum brasiliense, comb. nov. Among these taxa, four names are rescued from synonymy: B. appendiculatum, B. ×confluens, B. juergensii and P. brasiliense (this, with a new combination into Parablechnum). The putative hybrids, B. ×caudatum and B. ×confluens, are formed by the crossing of B. gracile × B. occidentale, and B. occidentale × B. polypodioides, respectively - as suggested by our observations in the field, morphological intermediancy, and literature review. Future studies involving cytogenetics, genetics, and palynology will be needed to better understand the complex of Blechnum hybrids, including the best status for B. aff. juergensii.

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Especies arborescentes del género <i>Blechnum</i> (Blechnaceae: Pteridophyta)

Cited by 6 publications

References 23 publications

Phylogenetics and historical biogeography of Lomaridium (Blechnaceae: Polypodiopsida)

Phylogenetics and historical biogeography of Lomaridium (Blechnaceae: Polypodiopsida)

Ferns from the Arroyo Chacay flora (Huitrera Formation, Eocene) Río Negro Province, Argentina

Fern Flora of Viçosa, Minas Gerais State, Brazil: Blechnaceae (Polypodiopsida)

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