Floral morphology and anatomy of <em>Fagus grandifolia</em> subsp. <em>mexicana</em> (Fagaceae), an endangered-relict tree of the Mexican montane cloud forest
Background: This study is the first to examine the inflorescence, and the staminate and pistillate flowers of the Mexican beech, an endangered-relict tropical montane cloud tree species. Questions: Are there morphological and anatomical differences in Mexican beech's inflorescence and flowe...
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| Format: | Article |
| Language: | English |
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Sociedad Botánica de México, A. C.
2021-04-01
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| Series: | Botanical Sciences |
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| Online Access: | https://www.botanicalsciences.com.mx/index.php/botanicalSciences/article/view/2818 |
| _version_ | 1811307439182577664 |
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| author | Ernesto Chanes Rodríguez-Ramírez Agustina Rosa Andrés-Hernández Isolda Luna-Vega |
| author_facet | Ernesto Chanes Rodríguez-Ramírez Agustina Rosa Andrés-Hernández Isolda Luna-Vega |
| author_sort | Ernesto Chanes Rodríguez-Ramírez |
| collection | DOAJ |
| description |
Background: This study is the first to examine the inflorescence, and the staminate and pistillate flowers of the Mexican beech, an endangered-relict tropical montane cloud tree species.
Questions: Are there morphological and anatomical differences in Mexican beech's inflorescence and flowers in comparison with other beech species worldwide?
Study species: Fagus grandifolia subsp. mexicana (Martínez) A.E. Murray)
Study site and dates: Five Mexican beech stands from eastern Mexico, early February to early March 2017 and 2020.
Methods: 400 Mexican beech floral buds and immature pistillate and staminate flowers in anthesis were collected and processed by light microscopy analysis and the pollen by scanning electron microscopy.
Results: We found floral morphology and anatomy differences of this southernmost American beech species regarding the New- and Old-World taxa. We found that the inflorescence morphology of the Mexican beech is similar to some Asian beeches such as F. hayatae subsp. pashanica, F. lucida and F. longipetiolata. Notwithstanding, the staminate and pistillate flowers' anatomy is similar to that of F. grandifolia from Canada and the United States of America, F. sylvatica from Europe and F. crenata from Japan.
Conclusions: The inflorescence and floral anatomical and morphological differences can be explained by possible hybridizations. Since only the pistillate and staminate flowers of F. sylvatica and F. grandifolia have been studied in detail, morphological, molecular and ecological studies of the Asian beech species are needed to achieve a better understanding of the floral morphology and anatomical evolution of these species and their relationship with the Mexican beech.
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| first_indexed | 2024-04-13T09:04:24Z |
| format | Article |
| id | doaj.art-794225d45b6d437aa6ecbfc3b199aebc |
| institution | Directory Open Access Journal |
| issn | 2007-4298 2007-4476 |
| language | English |
| last_indexed | 2024-04-13T09:04:24Z |
| publishDate | 2021-04-01 |
| publisher | Sociedad Botánica de México, A. C. |
| record_format | Article |
| series | Botanical Sciences |
| spelling | doaj.art-794225d45b6d437aa6ecbfc3b199aebc2022-12-22T02:53:01ZengSociedad Botánica de México, A. C.Botanical Sciences2007-42982007-44762021-04-0199310.17129/botsci.2818Floral morphology and anatomy of <em>Fagus grandifolia</em> subsp. <em>mexicana</em> (Fagaceae), an endangered-relict tree of the Mexican montane cloud forestErnesto Chanes Rodríguez-Ramírez0Agustina Rosa Andrés-Hernández1Isolda Luna-Vega2Laboratorio de Biogeografía y Sistemática, Facultad de Ciencias, Universidad Nacional Autónoma de México, Ciudad de MéxicoBenemérita Universidad Autónoma de Puebla, Facultad de Ciencias Biológicas, PueblaLaboratorio de Biogeografía y Sistemática, Facultad de Ciencias, Universidad Nacional Autónoma de México, Ciudad de México Background: This study is the first to examine the inflorescence, and the staminate and pistillate flowers of the Mexican beech, an endangered-relict tropical montane cloud tree species. Questions: Are there morphological and anatomical differences in Mexican beech's inflorescence and flowers in comparison with other beech species worldwide? Study species: Fagus grandifolia subsp. mexicana (Martínez) A.E. Murray) Study site and dates: Five Mexican beech stands from eastern Mexico, early February to early March 2017 and 2020. Methods: 400 Mexican beech floral buds and immature pistillate and staminate flowers in anthesis were collected and processed by light microscopy analysis and the pollen by scanning electron microscopy. Results: We found floral morphology and anatomy differences of this southernmost American beech species regarding the New- and Old-World taxa. We found that the inflorescence morphology of the Mexican beech is similar to some Asian beeches such as F. hayatae subsp. pashanica, F. lucida and F. longipetiolata. Notwithstanding, the staminate and pistillate flowers' anatomy is similar to that of F. grandifolia from Canada and the United States of America, F. sylvatica from Europe and F. crenata from Japan. Conclusions: The inflorescence and floral anatomical and morphological differences can be explained by possible hybridizations. Since only the pistillate and staminate flowers of F. sylvatica and F. grandifolia have been studied in detail, morphological, molecular and ecological studies of the Asian beech species are needed to achieve a better understanding of the floral morphology and anatomical evolution of these species and their relationship with the Mexican beech. https://www.botanicalsciences.com.mx/index.php/botanicalSciences/article/view/2818catkinsdichasiainflorecencemass floweringMexican beechpalynology |
| spellingShingle | Ernesto Chanes Rodríguez-Ramírez Agustina Rosa Andrés-Hernández Isolda Luna-Vega Floral morphology and anatomy of <em>Fagus grandifolia</em> subsp. <em>mexicana</em> (Fagaceae), an endangered-relict tree of the Mexican montane cloud forest Botanical Sciences catkins dichasia inflorecence mass flowering Mexican beech palynology |
| title | Floral morphology and anatomy of <em>Fagus grandifolia</em> subsp. <em>mexicana</em> (Fagaceae), an endangered-relict tree of the Mexican montane cloud forest |
| title_full | Floral morphology and anatomy of <em>Fagus grandifolia</em> subsp. <em>mexicana</em> (Fagaceae), an endangered-relict tree of the Mexican montane cloud forest |
| title_fullStr | Floral morphology and anatomy of <em>Fagus grandifolia</em> subsp. <em>mexicana</em> (Fagaceae), an endangered-relict tree of the Mexican montane cloud forest |
| title_full_unstemmed | Floral morphology and anatomy of <em>Fagus grandifolia</em> subsp. <em>mexicana</em> (Fagaceae), an endangered-relict tree of the Mexican montane cloud forest |
| title_short | Floral morphology and anatomy of <em>Fagus grandifolia</em> subsp. <em>mexicana</em> (Fagaceae), an endangered-relict tree of the Mexican montane cloud forest |
| title_sort | floral morphology and anatomy of em fagus grandifolia em subsp em mexicana em fagaceae an endangered relict tree of the mexican montane cloud forest |
| topic | catkins dichasia inflorecence mass flowering Mexican beech palynology |
| url | https://www.botanicalsciences.com.mx/index.php/botanicalSciences/article/view/2818 |
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