Evidence map›Paper›PMID 25694438›Full record

ArticleAnnals of botany2015

A molecular survey concerning the origin of Cyperus esculentus (Cyperaceae, Poales): two sides of the same coin (weed vs. crop).

Olga De Castro, Roberta Gargiulo, Emanuele Del Guacchio, Paolo Caputo, Paolo De Luca

Open access · bronzeAbstract read
In one paragraph

Article in Annals of botany, 2015. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 16 papers.

0numbers the graph read from it
0cells of the map it votes in
16citing papers in PubMed
4.1field-weighted citation impact, top 7% of its field
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

16 citing papers in PubMed, 51 citations in OpenAlex.

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4 · The record

Corrections and comments

PubMed lists nothing against this paper. Absence here is not a guarantee, only a check that was made.

5 · Who and what money

Authors and funding

5 authors at 1 institution in 1 country.

Olga De CastroDipartimento di Biologia, Università degli Studi di Napoli Federico II, Via Foria 223-Orto Botanico, 80139 Napoli, Italy and Orto Botanico, Via Foria 223, 80139, Napoli, Italy olga.decastro@unina.it odecastr@unina.it.
Roberta GargiuloDipartimento di Biologia, Università degli Studi di Napoli Federico II, Via Foria 223-Orto Botanico, 80139 Napoli, Italy and Orto Botanico, Via Foria 223, 80139, Napoli, Italy.
Emanuele Del GuacchioDipartimento di Biologia, Università degli Studi di Napoli Federico II, Via Foria 223-Orto Botanico, 80139 Napoli, Italy and Orto Botanico, Via Foria 223, 80139, Napoli, Italy.
Paolo CaputoDipartimento di Biologia, Università degli Studi di Napoli Federico II, Via Foria 223-Orto Botanico, 80139 Napoli, Italy and Orto Botanico, Via Foria 223, 80139, Napoli, Italy.
Paolo De LucaDipartimento di Biologia, Università degli Studi di Napoli Federico II, Via Foria 223-Orto Botanico, 80139 Napoli, Italy and Orto Botanico, Via Foria 223, 80139, Napoli, Italy.
University of Naples Federico II · IT

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

BACKGROUND AND

aimsCyperus esculentus is widespread in tropical and temperate zones and is also present in cooler regions. It is used as a crop plant, but it also occurs in the wild and as a weed. As a consequence of its ecological plasticity, C. esculentus has remarkable variability, with several morphotypes. Four wild-type varieties are presently recognized, in addition to the cultivated form. This study investigates the phylogenetic position and biogeography of C. esculentus with the objective of contributing new data to increase the understanding of its evolutionary history.

methodsGenealogical relationships among genotypes were inferred by using plastid DNA haplotype and nuclear ribosomal (nr) DNA ribotype sequences for 70 specimens either collected in the field or obtained from herbaria. Statistical dispersal-vicariance (S-DIVA) and Bayesian binary method (BBM) analyses were used to reconstruct the possible ancestral ranges of C. esculentus. In order to determine the age of C. esculentus, a time-measured phylogenetic analysis was performed. KEY

resultsConsiderable variation between the chosen nuclear and plastid markers was detected (27 ribotypes vs. six haplotypes). No geographical structure was displayed among the haplotypes, but information on the dispersal pattern may be deduced. Two types of ribotypes were detected in nrDNA, with an evident geographical segregation into an Old World group and a polymorphic New World group. Both S-DIVA and BBM analyses suggested a biogeographical history in which dispersal from the African region has been crucial in shaping the current distribution pattern of C. esculentus. The most recent common ancestor between C. esculentus races has an age of 5.1 million years (95 % highest posterior density 2.5-10.2).

conclusionsThe molecular analysis provides novel insights into the evolutionary history of C. esculentus. The results have various taxonomic and phylogenetic implications, including a hypothesis on the origin and phylogeography of this species, which probably originated in the late Cenozoic in Africa, and reached the Americas repeatedly, independently of Columbian exchanges.

Indexed as

Evolution, MolecularBase SequenceCyperusDNA, PlantDNA, RibosomalGenetic MarkersGeographyHaplotypesMolecular Sequence DataPhylogenyPlastidsSequence Analysis, DNADNA, PlantDNA, RibosomalGenetic MarkersChufacropCyperaceaeCyperus esculentusdispersal–vicariance analysisherbarium specimenslong-distance dispersalmolecular clockPoalestiger nutweedyellow nutsedge

Identifiers

PMID25694438
PMCPMC4373285
OpenAlexW2115859334

What OpenQuestion holds

Textmetadata
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Registered trials

None linked

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.