4.4 Article

From Isozymes to Genomics: Population Genetics and Conservation of Agave in Mexico

Journal

BOTANICAL REVIEW
Volume 79, Issue 4, Pages 483-506

Publisher

SPRINGER
DOI: 10.1007/s12229-013-9123-x

Keywords

Arid lands; Conservation genetics; Genetic differentiation; Genetic variation; Mezcal; Tequila

Categories

Funding

  1. Papiit UNAM [IN224309-3]
  2. CONACYT [SEP-2004-C01-46475-Q]
  3. SEMARNAT- CONACYT [2002 C01- 0246]
  4. CONABIO [CS016]
  5. UC-MEXUS
  6. CONACYT
  7. DGAPA
  8. UNAM

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Mexico is a megadiverse country, but less than 54 % of its original vegetation still remains. In particular Mexican deserts and arid and semiarid ecosystems harbor a large number of endemic taxa, and the genus Agave is an outstanding example. Agave is one of the largest genera of the Mexican flora, including a total estimated number of 200 species, 74 % of them endemic to the country. Agave is also one of the Mexican plant genera with more population genetic studies. We describe here studies in 22 Agave species using different genetic markers. For the genus we found on average a high level of genetic variation, H (s) = 0.19, and a low genetic differentiation, F (st) = 0.15. We identify some species that should be subject to special conservation genetic efforts, in particular the endangered A. victoriae-reginae and both wild populations and landraces of A. angustifolia, including the cultivated A. tequilana.

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