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Preliminary placement and new records of an overlooked Amazonian tree, Christiana mennegae (Malvaceae)

Christiana mennegae is a phylogenetically enigmatic taxon and represents a case in point of a species whose presence escaped the radar of the Amazon lists and the Brazilian Flora project. Here we expand its distribution by adding new records from Peru and overlooked ones from Brazil. To investigate...

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Autores principales: Barbosa-Silva, Rafael G., Coutinho, Thales Silva, Vasconcelos, Santelmo, da Silva, Delmo Fonseca, Oliveira, Guilherme, Zappi, Daniela C.
Formato: Online Artículo Texto
Lenguaje:English
Publicado: PeerJ Inc. 2021
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC8601058/
https://www.ncbi.nlm.nih.gov/pubmed/34820158
http://dx.doi.org/10.7717/peerj.12244
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author Barbosa-Silva, Rafael G.
Coutinho, Thales Silva
Vasconcelos, Santelmo
da Silva, Delmo Fonseca
Oliveira, Guilherme
Zappi, Daniela C.
author_facet Barbosa-Silva, Rafael G.
Coutinho, Thales Silva
Vasconcelos, Santelmo
da Silva, Delmo Fonseca
Oliveira, Guilherme
Zappi, Daniela C.
author_sort Barbosa-Silva, Rafael G.
collection PubMed
description Christiana mennegae is a phylogenetically enigmatic taxon and represents a case in point of a species whose presence escaped the radar of the Amazon lists and the Brazilian Flora project. Here we expand its distribution by adding new records from Peru and overlooked ones from Brazil. To investigate its phylogenetic placement in the Brownlowioideae, part of the rbcL gene of the plastid and the intergenic ITS2 region were sequenced. Macro- and micro-morphological investigation of features of C. mennegae using SEM of foliar, flower, fruit and seed structures are presented. A lectotype for the name is designated here. The morphology of trichomes revealed five types of trichomes ranging from glandular to branched and unbranched and we also report stomata on the seed surface for the first time in Brownlowioideae. Christiana mennegae and C. africana were recovered as sister species in the phylogenetic analysis, albeit with low to moderate support, and more species of this and closely related genera must be sampled and analyzed in order to obtain a clearer picture of the group’s affinities and relationships. We provide an update of its conservation status from Vulnerable to Least Concern. We also highlight the need for investment in the digitization of biological collections, botanical capacity building at the local level and the importance of the availability of online literature to speed the study of Amazonian plant diversity.
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spelling pubmed-86010582021-11-23 Preliminary placement and new records of an overlooked Amazonian tree, Christiana mennegae (Malvaceae) Barbosa-Silva, Rafael G. Coutinho, Thales Silva Vasconcelos, Santelmo da Silva, Delmo Fonseca Oliveira, Guilherme Zappi, Daniela C. PeerJ Biodiversity Christiana mennegae is a phylogenetically enigmatic taxon and represents a case in point of a species whose presence escaped the radar of the Amazon lists and the Brazilian Flora project. Here we expand its distribution by adding new records from Peru and overlooked ones from Brazil. To investigate its phylogenetic placement in the Brownlowioideae, part of the rbcL gene of the plastid and the intergenic ITS2 region were sequenced. Macro- and micro-morphological investigation of features of C. mennegae using SEM of foliar, flower, fruit and seed structures are presented. A lectotype for the name is designated here. The morphology of trichomes revealed five types of trichomes ranging from glandular to branched and unbranched and we also report stomata on the seed surface for the first time in Brownlowioideae. Christiana mennegae and C. africana were recovered as sister species in the phylogenetic analysis, albeit with low to moderate support, and more species of this and closely related genera must be sampled and analyzed in order to obtain a clearer picture of the group’s affinities and relationships. We provide an update of its conservation status from Vulnerable to Least Concern. We also highlight the need for investment in the digitization of biological collections, botanical capacity building at the local level and the importance of the availability of online literature to speed the study of Amazonian plant diversity. PeerJ Inc. 2021-11-15 /pmc/articles/PMC8601058/ /pubmed/34820158 http://dx.doi.org/10.7717/peerj.12244 Text en ©2021 Barbosa-Silva et al. https://creativecommons.org/licenses/by/4.0/This is an open access article distributed under the terms of the Creative Commons Attribution License (https://creativecommons.org/licenses/by/4.0/) , which permits unrestricted use, distribution, reproduction and adaptation in any medium and for any purpose provided that it is properly attributed. For attribution, the original author(s), title, publication source (PeerJ) and either DOI or URL of the article must be cited.
spellingShingle Biodiversity
Barbosa-Silva, Rafael G.
Coutinho, Thales Silva
Vasconcelos, Santelmo
da Silva, Delmo Fonseca
Oliveira, Guilherme
Zappi, Daniela C.
Preliminary placement and new records of an overlooked Amazonian tree, Christiana mennegae (Malvaceae)
title Preliminary placement and new records of an overlooked Amazonian tree, Christiana mennegae (Malvaceae)
title_full Preliminary placement and new records of an overlooked Amazonian tree, Christiana mennegae (Malvaceae)
title_fullStr Preliminary placement and new records of an overlooked Amazonian tree, Christiana mennegae (Malvaceae)
title_full_unstemmed Preliminary placement and new records of an overlooked Amazonian tree, Christiana mennegae (Malvaceae)
title_short Preliminary placement and new records of an overlooked Amazonian tree, Christiana mennegae (Malvaceae)
title_sort preliminary placement and new records of an overlooked amazonian tree, christiana mennegae (malvaceae)
topic Biodiversity
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC8601058/
https://www.ncbi.nlm.nih.gov/pubmed/34820158
http://dx.doi.org/10.7717/peerj.12244
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