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https://hdl.handle.net/10316/103461
Title: | Cytogenetic, Morphometric, and Ecological Characterization of Festuca indigesta Boiss. in the Southeast of Spain | Authors: | Martínez-Sagarra, Gloria Casimiro-Soriguer, Federico Castro, Silvia Loureiro, João Devesa, Juan A |
Keywords: | Festuca; genome size; National Park; Poaceae; Sierra Nevada; Sierra de las Nieves; Spain | Issue Date: | 4-Mar-2022 | Publisher: | MDPI | Project: | Spanish Ministry of Economy and Competitiveness through the projects Flora Iberica CGL2011-28613-C03-02, CGL2014-52787-C3-3-P, and CGL2017-85204- C3-3-P, as well as ERDF funds FCT - POPH/FSE funds (IF/01267/2013) |
Serial title, monograph or event: | Plants | Volume: | 11 | Issue: | 5 | Abstract: | Festuca indigesta subsp. indigesta (Poaceae) is endemic to the southeast of Spain, and until recently, it was considered that its range of distribution was restricted to the siliceous core of Sierra Nevada. However, it has been recently extended in the territory to others calcareous mountains. This study investigates the cytogenetic variability throughout the geographic range of this taxon, the possible edaphic preferences of each cytotype, and the morphological variation of cytotypes. Genome sizes and ploidy levels were estimated using flow cytometry and chromosome count. Soil samples were collected to test the nature of the substrate, i.e., pH, and calcium and magnesium contents. Finally, morphological characters were measured in herbarium specimens. This study provides the first genome size data for the species. Hidden cytogenetic diversity was detected in the taxon, comprising hexaploid (2n = 6x = 42), octoploid (2n = 8x = 56) and dodecaploid (2n = 12x = 84) individuals. No relationship between substrate nature and cytotype was observed. Morphological differences were detected for the size of floral parts and stomata among cytotypes, but these were blurred if the entire morphological variation range was considered. Our results suggest that each mountain range could act as a reservoir of morphologically cryptic genetic diversity regarding this taxon. | URI: | https://hdl.handle.net/10316/103461 | ISSN: | 2223-7747 | DOI: | 10.3390/plants11050693 | Rights: | openAccess |
Appears in Collections: | I&D CFE - Artigos em Revistas Internacionais |
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