Evidence map›Paper›PMID 38982014›Full record

ArticleJournal of plant research2024

Reproductive biology as a tool to elucidate taxonomic delimitation: How different can two highly specialized subspecies of Parodia haselbergii (cactaceae) be?

Rafael Becker, Renan Pittella, Fernando H Calderon-Quispe, Júlia de Moraes Brandalise, Rosana Farias-Singer, Rodrigo Bustos Singer

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In one paragraph

Article in Journal of plant research, 2024. The graph could read no effect estimate from its abstract, so it casts no vote on the map. An erratum has been issued. Cited by 2 papers.

0numbers the graph read from it
0cells of the map it votes in
2citing papers in PubMed
–field-weighted citation impact
1 · What the graph read from it

What it found

Each row is one number read from the abstract, on the scale the paper reported it, with its interval. Left of the dashed line favours the treatment, right favours the comparator. Under each row is the sentence it came from. New to these charts? A ten-minute tutorial.

The abstract states no effect estimate the extractor could read, or names no intervention and outcome on the map, so this paper lights no cell and moves no belief. It is still indexed, cited and linked below.

2 · The registry

The trial behind it

Trials whose registry record cites this paper, or whose number appears in the abstract. A trial that started after this paper was published is citing it as background, not reporting it.

Neither the registry nor the abstract names a trial number. If this is a trial report, that itself is worth knowing.

3 · Its place in the literature

Who cites it

2 citing papers in PubMed.

  1. Article
  2. Article
4 · The record

Corrections and comments

5 · Who and what money

Authors and funding

6 authors.

Rafael BeckerLaboratory of Systematics of Vascular Plants, Botany Department, Instituto de Biociências, Universidade Federal do Rio Grande do Sul, Av. Bento Gonçalves 9500, Porto Alegre, 91509-900, Rio Grande do Sul, Brazil. beckerr92@gmail.com.ORCID http://orcid.org/0000-0001-8650-256X
Renan PittellaLaboratory of Systematics of Vascular Plants, Botany Department, Instituto de Biociências, Universidade Federal do Rio Grande do Sul, Av. Bento Gonçalves 9500, Porto Alegre, 91509-900, Rio Grande do Sul, Brazil.ORCID https://orcid.org/0000-0002-1945-5967
Fernando H Calderon-QuispeLaboratory of Systematics of Vascular Plants, Botany Department, Instituto de Biociências, Universidade Federal do Rio Grande do Sul, Av. Bento Gonçalves 9500, Porto Alegre, 91509-900, Rio Grande do Sul, Brazil.ORCID https://orcid.org/0000-0002-4717-8311
Júlia de Moraes BrandaliseLaboratory of Systematics of Vascular Plants, Botany Department, Instituto de Biociências, Universidade Federal do Rio Grande do Sul, Av. Bento Gonçalves 9500, Porto Alegre, 91509-900, Rio Grande do Sul, Brazil.ORCID https://orcid.org/0000-0002-2785-0641
Rosana Farias-SingerPorto Alegre Botanical Garden, Secretaria Estadual do Meio Ambiente do Rio Grande do Sul, Porto Alegre, Rio Grande do Sul, Brazil.ORCID http://orcid.org/0000-0003-0694-6692
Rodrigo Bustos SingerLaboratory of Systematics of Vascular Plants, Botany Department, Instituto de Biociências, Universidade Federal do Rio Grande do Sul, Av. Bento Gonçalves 9500, Porto Alegre, 91509-900, Rio Grande do Sul, Brazil.ORCID http://orcid.org/0000-0001-8980-7713

Funding

Coordenação de Aperfeiçoamento de Pessoal de Nível Superior 88887.68451/2022-00
6 · The paper itself

Abstract

Reproductive isolation is one of the mechanisms of speciation. The two currently accepted subspecies of Parodia haselbergii (P. haselbergii subsp. haselbergii and P. haselbergii subsp. graessneri) were studied regarding flower traits, phenology, breeding systems and pollination. In addition, a principal component analysis with 18 floral characters and germination tests under controlled conditions were performed for both taxa. Pollination was studied in the field, in two localities of Southern Brazil. Pollinators were recorded through photos and film. Breeding system experiments were performed by applying controlled pollinations to plants excluded from pollinators. Both taxa mostly differ in asynchronous flowering periods, floral traits (including floral part measurements and nectar concentration) and pollinators. The flowers of both subspecies are functionally protogynous and perform remarkably long lifespans (≥ 15 days), both traits being novelties for Cactaceae. Whereas the reddish flowers of P. haselbergii subsp. haselbergii (nectar concentration: ca. 18%) are pollinated by hummingbirds of Thalurania glaucopis, the greenish flowers of P. haselbergii subsp. graessneri (nectar concentration: ca. 29%) are pollinated by Augochlora bees (Halictidae). Both subspecies are self-compatible, yet pollinator-dependent. The principal component analysis evidenced that both subspecies are separated, regarding flower traits. The seeds of both subspecies performed differently in the germination tests, but the best results were recovered at 20 °C and germination considerably decreased around 30 °C. In conclusion, all these results support that both taxa are in reproductive isolation, and can be treated as different species.

Indexed as

CactaceaeFlowersPollinationAnimalsBirdsBrazilGerminationPlant NectarPrincipal Component AnalysisReproductionReproductive IsolationSpecies SpecificityPlant NectarMellitophillyOrnitophilyPollinationProtogynyReproductive isolation

Identifiers

PMID38982014

What OpenQuestion holds

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Read under generation 80e0d062 · epoch 390. Bibliography from PubMed, PubMed Central and OpenAlex; grants from NIH RePORTER; trial links from ClinicalTrials.gov; estimates, votes and beliefs from the OpenQuestion graph.