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Revised Species Delimitation in the Giant Water Lily Genus Victoria (Nymphaeaceae) Confirms a New Species and Has Implications for Its Conservation

Smith, L. T. (author)
Magdalena, C. (author)
Przelomska, N. A. S. (author)
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Perez-Escobar, O. A. (author)
Melgar-Gomez, D. G. (author)
Beck, S. (author)
Negrao, R. (author)
Mian, S. (author)
Leitch, I. J. (author)
Dodsworth, S. (author)
Maurin, O. (author)
Ribero-Guardia, G. (author)
Salazar, C. D. (author)
Gutierrez-Sibauty, G. (author)
Antonelli, Alexandre, 1978 (author)
Gothenburg University,Göteborgs universitet,Institutionen för biologi och miljövetenskap,Department of Biological and Environmental Sciences
Monro, A. K. (author)
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 (creator_code:org_t)
2022-07-04
2022
English.
In: Frontiers in Plant Science. - : Frontiers Media SA. - 1664-462X. ; 13
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  • Journal article (peer-reviewed)
Abstract Subject headings
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  • Reliably documenting plant diversity is necessary to protect and sustainably benefit from it. At the heart of this documentation lie species concepts and the practical methods used to delimit taxa. Here, we apply a total-evidence, iterative methodology to delimit and document species in the South American genus Victoria (Nymphaeaceae). The systematics of Victoria has thus far been poorly characterized due to difficulty in attributing species identities to biological collections. This research gap stems from an absence of type material and biological collections, also the confused diagnosis of V. cruziana. With the goal of improving systematic knowledge of the genus, we compiled information from historical records, horticulture and geography and assembled a morphological dataset using citizen science and specimens from herbaria and living collections. Finally, we generated genomic data from a subset of these specimens. Morphological and geographical observations suggest four putative species, three of which are supported by nuclear population genomic and plastid phylogenomic inferences. We propose these three confirmed entities as robust species, where two correspond to the currently recognized V. amazonica and V. cruziana, the third being new to science, which we describe, diagnose and name here as V. boliviana Magdalena and L. T. Sm. Importantly, we identify new morphological and molecular characters which serve to distinguish the species and underpin their delimitations. Our study demonstrates how combining different types of character data into a heuristic, total-evidence approach can enhance the reliability with which biological diversity of morphologically challenging groups can be identified, documented and further studied.

Subject headings

NATURVETENSKAP  -- Biologi -- Botanik (hsv//swe)
NATURAL SCIENCES  -- Biological Sciences -- Botany (hsv//eng)

Keyword

Victoria
heuristic species concept
morphology
population genomics
Victorian era
Mamore River
molecular diagnosis of species
divergence
times
phylogenetic analysis
molecular phylogeny
andean uplift
sequence
evolution
genome
classification
substitution
annotation
morphology
Plant Sciences

Publication and Content Type

ref (subject category)
art (subject category)

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