GENOME SIZE VARIATION OF SOUTHERN SOUTH AMERICAN SPECIES OF ILEX (AQUIFOLIACEAE)
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Instituto de Botánica Darwinion
2023
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| _version_ | 1876475799865917440 |
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| author | Mariana J. Garberoglio |
| author_facet | Mariana J. Garberoglio |
| contents | GENOME SIZE VARIATION OF SOUTHERN SOUTH AMERICAN SPECIES OF ILEX (AQUIFOLIACEAE) Mariana J. Garberoglio Graciela E. González Mario A. Kryvenki Alexandra M. Gottlieb Biología ilex Genome size ploidy level south America Garberoglio, M. J.; G. E. González, M. A. Kryvenki & A. M. Gottlieb. 2023. Genome size variation of southern South American species of Ilex (Aquifoliaceae). Darwiniana, nueva serie 11(1): 167-179. The genus Ilex (Aquifoliaceae) has several species appreciated by their ornamental value and nutraceutical and medicinal properties. Southern South America is a major center of biodiversity, with ca. 13-15 species. However, they have been scarcely studied, particularly regarding cytogenetics. For instance, chromosome numbers have been solely documented in eight species, while the DNA content (genome size or 2C-value) has been recorded just for three species. To contribute to the characterization of Ilex species from southern South America, here we established the genome size of I. brasiliensis, I. brevicuspis, I. integerrima, I. microdonta, I. pseudobuxus, I. taubertiana and I. theezans as novel data, and verified the DNA content for I. argentina, I. dumosa and I. paraguariensis. Our results indicate that the mean DNA content at the interspecific level ranges between 1.691 pg, as in I. pseudobuxus and 3.600 pg as in I. theezans. Yet, an individual of I. theezans from Paraguay showed about half the genome size. These unexpected outcomes for I. theezans lead us to propose the coexistence of diploid and polyploid cytotypes for this species. I. brasiliensis was determined to have 2n=40 chromosomes and regular meiosis, for the first time. In sum, this work is a contribution to the knowledge of an understudied plant family. Gaining insight on genetic biodiversity is relevant for the potential use of non-industrialized species for the improvement of economically significant ones. 2023 artículo científico 0011-6793 https://www.redalyc.org/articulo.oa?id=66976167013 https://www.redalyc.org/journal/669/66976167013/ https://www.redalyc.org/journal/669/66976167013/html/ https://www.redalyc.org/journal/669/66976167013/66976167013.epub https://www.redalyc.org/journal/669/66976167013/movil 10.14522/darwiniana.2023.111.1106 en http://www.redalyc.org/revista.oa?id=669 Darwiniana application/pdf Instituto de Botánica Darwinion Darwiniana (Argentina) Num.1 Vol.11 |
| format | Artículo científico |
| id | redalyc_66976167013 |
| institution | Redalyc |
| language | en |
| publishDate | 2023 |
| publisher | Instituto de Botánica Darwinion |
| spellingShingle | GENOME SIZE VARIATION OF SOUTHERN SOUTH AMERICAN SPECIES OF ILEX (AQUIFOLIACEAE) Mariana J. Garberoglio Biología ilex Genome size ploidy level south America GENOME SIZE VARIATION OF SOUTHERN SOUTH AMERICAN SPECIES OF ILEX (AQUIFOLIACEAE) Mariana J. Garberoglio Graciela E. González Mario A. Kryvenki Alexandra M. Gottlieb Biología ilex Genome size ploidy level south America Garberoglio, M. J.; G. E. González, M. A. Kryvenki & A. M. Gottlieb. 2023. Genome size variation of southern South American species of Ilex (Aquifoliaceae). Darwiniana, nueva serie 11(1): 167-179. The genus Ilex (Aquifoliaceae) has several species appreciated by their ornamental value and nutraceutical and medicinal properties. Southern South America is a major center of biodiversity, with ca. 13-15 species. However, they have been scarcely studied, particularly regarding cytogenetics. For instance, chromosome numbers have been solely documented in eight species, while the DNA content (genome size or 2C-value) has been recorded just for three species. To contribute to the characterization of Ilex species from southern South America, here we established the genome size of I. brasiliensis, I. brevicuspis, I. integerrima, I. microdonta, I. pseudobuxus, I. taubertiana and I. theezans as novel data, and verified the DNA content for I. argentina, I. dumosa and I. paraguariensis. Our results indicate that the mean DNA content at the interspecific level ranges between 1.691 pg, as in I. pseudobuxus and 3.600 pg as in I. theezans. Yet, an individual of I. theezans from Paraguay showed about half the genome size. These unexpected outcomes for I. theezans lead us to propose the coexistence of diploid and polyploid cytotypes for this species. I. brasiliensis was determined to have 2n=40 chromosomes and regular meiosis, for the first time. In sum, this work is a contribution to the knowledge of an understudied plant family. Gaining insight on genetic biodiversity is relevant for the potential use of non-industrialized species for the improvement of economically significant ones. 2023 artículo científico 0011-6793 https://www.redalyc.org/articulo.oa?id=66976167013 https://www.redalyc.org/journal/669/66976167013/ https://www.redalyc.org/journal/669/66976167013/html/ https://www.redalyc.org/journal/669/66976167013/66976167013.epub https://www.redalyc.org/journal/669/66976167013/movil 10.14522/darwiniana.2023.111.1106 en http://www.redalyc.org/revista.oa?id=669 Darwiniana application/pdf Instituto de Botánica Darwinion Darwiniana (Argentina) Num.1 Vol.11 |
| title | GENOME SIZE VARIATION OF SOUTHERN SOUTH AMERICAN SPECIES OF ILEX (AQUIFOLIACEAE) |
| topic | Biología ilex Genome size ploidy level south America |
| url | https://www.redalyc.org/articulo.oa?id=66976167013 https://www.redalyc.org/journal/669/66976167013/ https://www.redalyc.org/journal/669/66976167013/html/ https://www.redalyc.org/journal/669/66976167013/66976167013.epub https://www.redalyc.org/journal/669/66976167013/movil |