Plant Systematics and Evolution

, Volume 302, Issue 5, pp 609–615 | Cite as

One species, one genotype: no genotypic variability in the extremely narrow endemic tetraploid Agrostis barceloi (Gramineae)

  • Sergi MassóEmail author
  • Jordi López-Pujol
  • Javier López-Alvarado
  • Cèsar Blanché
  • Llorenç Sáez
Short Communication


We used allozyme electrophoresis to survey genetic diversity of Agrostis barceloi L.Sáez & Rosselló, an extremely narrow endemic species from the island of Majorca (Balearic Islands, Western Mediterranean Basin). This species is a tetraploid with a single natural population of less than 100 individuals. All analyzed individuals of A. barceloi showed the same genotype. Four out of 18 interpretable loci showed fixed heterozygosity (thus supporting an allopolyploid origin). The genotypic uniformity of this species may be attributed to a founder effect associated with a dispersal event of its ancestor from the continent, a very small current effective population size (N e), and a series of natural or anthropogenic threats affecting the population. We propose several conservation measures such as seed storing and plant production for further reinforcements (which do not need any previous work for selecting individuals because of the genetic uniformity). In addition, we suggest the preservation of the mountain summit where the species is found (Puig Major), which would also positively influence the conservation of other co-occurring ENEs and other rare and threatened species.


Agrostis barceloi Extremely narrow endemics (ENE) Genetic diversity Islands Threatened 



We thank two anonymous referees and the associate editor for their helpful comments. An ADR fellowship (Universitat de Barcelona) and a postdoctoral “Beatriu de Pinós” fellowship (Generalitat de Catalunya) were awarded to S. Massó and J. López-Pujol, respectively.

Compliance with ethical standards

Conflict of interest

The authors declare that they have no conflict of interest.


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Copyright information

© Springer-Verlag Wien 2016

Authors and Affiliations

  • Sergi Massó
    • 1
    • 2
    Email author
  • Jordi López-Pujol
    • 2
  • Javier López-Alvarado
    • 3
  • Cèsar Blanché
    • 1
  • Llorenç Sáez
    • 3
    • 4
  1. 1.BioC-GReB, Laboratori de Botànica, Facultat de FarmàciaUniversitat de BarcelonaBarcelonaSpain
  2. 2.BioC-GReB, Botanic Institute of Barcelona (IBB-CSIC-ICUB)BarcelonaSpain
  3. 3.Unitat de Botànica, Facultat de BiociènciesUniversitat Autònoma de BarcelonaBarcelonaSpain
  4. 4.Societat d’Història Natural de les Illes Balears C./Margarida XirguPalma de MallorcaSpain

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