Micromorphological character expression of the hybrid <em>Quercus</em> × <em>dysophylla</em> and its parental species (<em>Q. crassifolia</em> and <em> Q. crassipes</em>)
Background: Hybridization leads to individuals with atypical phenotypes, leading to taxonomic confusion when hybridizing populations are studied. Micromorphological characters may enable taxonomists to discriminate between parental and hybrid categories due to their simple genetic inheritance. S...
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| Format: | Article |
| Language: | English |
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Sociedad Botánica de México, A. C.
2017-10-01
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| Series: | Botanical Sciences |
| Subjects: | |
| Online Access: | https://www.botanicalsciences.com.mx/index.php/botanicalSciences/article/view/875 |
| _version_ | 1798017705722249216 |
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| author | Alfredo López-Caamal Luz del Carmen Ruiz-Amaro Armando Zepeda-Rodríguez Patricia Mussali-Galante Efraín Tovar-Sánchez |
| author_facet | Alfredo López-Caamal Luz del Carmen Ruiz-Amaro Armando Zepeda-Rodríguez Patricia Mussali-Galante Efraín Tovar-Sánchez |
| author_sort | Alfredo López-Caamal |
| collection | DOAJ |
| description |
Background: Hybridization leads to individuals with atypical phenotypes, leading to taxonomic confusion when hybridizing populations are studied. Micromorphological characters may enable taxonomists to discriminate between parental and hybrid categories due to their simple genetic inheritance.
Species study: Three oak taxa distributed in the montane regions of the Mexico were studied: Quercus crassifolia, Q. crassipes and their hybrid Q. × dysophylla.
Hypothesis: We describe the leaf micromorphological and macromorphological variation of these taxa. Specifically, we searched for a unique combination of micromorphological characters in hybrids. We hypothesize that spatial micromorphological variation will match the spatial pattern revealed by a previous genetic study.
Study sites: Two allopatric stands for each parental species and seven hybrid zones were studied. Individuals within each stand were identified as belonging to parental or hybrid categories following previous genetic analyses.
Methods: Stomata and trichome types for each taxa were determined through Scanning Electron Microscopy. Eight micromorphological characters for trichomes and stomata and four foliar macromorphological characters were measured.
Results: We found the presence of both multirradiate and simple stellate non-glandular trichomes as a diagnostic feature of Q. × dysophylla. Overall populations, Q. × dysophylla showed intermediate phenotypes in 70 % of morphological characters. However, hybrid phenotype exhibited geographical variation. Lastly, spatial hybrid’s phenotype variation did not correlate with the spatial genetic pattern previously identified.
Conclusions: The micromorphological features of Q. × dysophylla may enable taxonomists to accurately discriminate between this taxon and its parental species. Finally, we suggest that micromorphological expression of both parental species and hybrids may be influenced by environmental gradients and microclimates.
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| first_indexed | 2024-04-11T16:11:41Z |
| format | Article |
| id | doaj.art-34cdf144663c4e9e916b4a1a78cda9f2 |
| institution | Directory Open Access Journal |
| issn | 2007-4298 2007-4476 |
| language | English |
| last_indexed | 2024-04-11T16:11:41Z |
| publishDate | 2017-10-01 |
| publisher | Sociedad Botánica de México, A. C. |
| record_format | Article |
| series | Botanical Sciences |
| spelling | doaj.art-34cdf144663c4e9e916b4a1a78cda9f22022-12-22T04:14:40ZengSociedad Botánica de México, A. C.Botanical Sciences2007-42982007-44762017-10-0195310.17129/botsci.875Micromorphological character expression of the hybrid <em>Quercus</em> × <em>dysophylla</em> and its parental species (<em>Q. crassifolia</em> and <em> Q. crassipes</em>)Alfredo López-Caamal0Luz del Carmen Ruiz-Amaro1Armando Zepeda-Rodríguez2Patricia Mussali-Galante3Efraín Tovar-SánchezPosgrado en Ciencias Biológicas, Universidad Nacional Autónoma de México. CDMXPosgrado en Ciencias Biológicas, Universidad Nacional Autónoma de México. CDMXDepartamento de Biología Celular y Tisular, Facultad de Medicina, Universidad Nacional Autónoma de México, Delegación Coyoacán, CDMXLaboratorio de Investigaciones Ambientales, Centro de Investigación en Biotecnología, Universidad Autónoma del Estado de Morelos, Cuernavaca, Morelos Background: Hybridization leads to individuals with atypical phenotypes, leading to taxonomic confusion when hybridizing populations are studied. Micromorphological characters may enable taxonomists to discriminate between parental and hybrid categories due to their simple genetic inheritance. Species study: Three oak taxa distributed in the montane regions of the Mexico were studied: Quercus crassifolia, Q. crassipes and their hybrid Q. × dysophylla. Hypothesis: We describe the leaf micromorphological and macromorphological variation of these taxa. Specifically, we searched for a unique combination of micromorphological characters in hybrids. We hypothesize that spatial micromorphological variation will match the spatial pattern revealed by a previous genetic study. Study sites: Two allopatric stands for each parental species and seven hybrid zones were studied. Individuals within each stand were identified as belonging to parental or hybrid categories following previous genetic analyses. Methods: Stomata and trichome types for each taxa were determined through Scanning Electron Microscopy. Eight micromorphological characters for trichomes and stomata and four foliar macromorphological characters were measured. Results: We found the presence of both multirradiate and simple stellate non-glandular trichomes as a diagnostic feature of Q. × dysophylla. Overall populations, Q. × dysophylla showed intermediate phenotypes in 70 % of morphological characters. However, hybrid phenotype exhibited geographical variation. Lastly, spatial hybrid’s phenotype variation did not correlate with the spatial genetic pattern previously identified. Conclusions: The micromorphological features of Q. × dysophylla may enable taxonomists to accurately discriminate between this taxon and its parental species. Finally, we suggest that micromorphological expression of both parental species and hybrids may be influenced by environmental gradients and microclimates. https://www.botanicalsciences.com.mx/index.php/botanicalSciences/article/view/875hybrid phenotypemorphometricsstomatatrichome |
| spellingShingle | Alfredo López-Caamal Luz del Carmen Ruiz-Amaro Armando Zepeda-Rodríguez Patricia Mussali-Galante Efraín Tovar-Sánchez Micromorphological character expression of the hybrid <em>Quercus</em> × <em>dysophylla</em> and its parental species (<em>Q. crassifolia</em> and <em> Q. crassipes</em>) Botanical Sciences hybrid phenotype morphometrics stomata trichome |
| title | Micromorphological character expression of the hybrid <em>Quercus</em> × <em>dysophylla</em> and its parental species (<em>Q. crassifolia</em> and <em> Q. crassipes</em>) |
| title_full | Micromorphological character expression of the hybrid <em>Quercus</em> × <em>dysophylla</em> and its parental species (<em>Q. crassifolia</em> and <em> Q. crassipes</em>) |
| title_fullStr | Micromorphological character expression of the hybrid <em>Quercus</em> × <em>dysophylla</em> and its parental species (<em>Q. crassifolia</em> and <em> Q. crassipes</em>) |
| title_full_unstemmed | Micromorphological character expression of the hybrid <em>Quercus</em> × <em>dysophylla</em> and its parental species (<em>Q. crassifolia</em> and <em> Q. crassipes</em>) |
| title_short | Micromorphological character expression of the hybrid <em>Quercus</em> × <em>dysophylla</em> and its parental species (<em>Q. crassifolia</em> and <em> Q. crassipes</em>) |
| title_sort | micromorphological character expression of the hybrid em quercus em em dysophylla em and its parental species em q crassifolia em and em q crassipes em |
| topic | hybrid phenotype morphometrics stomata trichome |
| url | https://www.botanicalsciences.com.mx/index.php/botanicalSciences/article/view/875 |
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