Stomatal vs. genome size in angiosperms: the somatic tail wagging the genomic dog?
- Autores
- Hodgson, J. G.; Sharafi, M.; Jalili, A.; Diaz, Sandra Myrna; Montserrat Martí, G.; Funes, Guillermo; Perez Harguindeguy, Natalia; Charles, M.; Castro Díez, P.; Cornelissen, J. H. C.; Jones, G.; Khoshnevis, M.; Pérez Rontome, M. C.; Shirvany, F. A.; Vendramini, Fernanda; Yazdani, S.; Abbas Azimi, R.; Boustan, S.; Dehghan, M.; Guerrero Campo, J.; Hynd, A.; Kowsary, E.; Kazemi Saeed, F.; Siavash, B.; Villar Salvador, P.; Craigie, R.; Naqinezhad, A.; Romo Dıez, A.; de Torres Espuny, L.; Simmons, E.
- Año de publicación
- 2010
- Idioma
- inglés
- Tipo de recurso
- artículo
- Estado
- versión publicada
- Descripción
- Background and Aims Genome size is a function, and the product, of cell volume. As such it is contingent on ecological circumstance. The nature of ‘this ecological circumstance’ is, however, hotly debated. Here, we investigate for angiosperms whether stomatal size may be this ‘missing link’: the primary determinant of genome size. Stomata are crucial for photosynthesis and their size affects functional efficiency. Methods Stomatal and leaf characteristics were measured for 1442 species from Argentina, Iran, Spain and the UK and, using PCA, some emergent ecological and taxonomic patterns identified. Subsequently, an assessment of the relationship between genome-size values obtained from the Plant DNA C-values database and measurements of stomatal size was carried out. Key Results Stomatal size is an ecologically important attribute. It varies with life-history (woody species, herbaceous species, vernal geophytes) and contributes to ecologically and physiologically important axes of leaf specialization. Moreover, it is positively correlated with genome size across a wide range of major taxa. Conclusions Stomatal size predicts genome size within angiosperms. Correlation is not, however, proof of causality and here our interpretation is hampered by unexpected deficiencies in the scientific literature. Firstly, there are discrepancies between our own observations and established ideas about the ecological significance of stomatal size; very large stomata, theoretically facilitating photosynthesis in deep shade, were, in this study (and in other studies), primarily associated with vernal geophytes of unshaded habitats. Secondly, the lower size limit at which stomata can function efficiently, and the ecological circumstances under which these minute stomata might occur, have not been satisfactorally resolved. Thus, our hypothesis, that the optimization of stomatal size for functional efficiency is a major ecological determinant of genome size, remains unproven.
Fil: Hodgson, J. G.. Peak Science and Environment; Reino Unido
Fil: Sharafi, M.. University of Mazandaran. Faculty of Sciences.Department of Biology; Irán
Fil: Jalili, A.. Research Institute of Forests and Rangelands; Irán
Fil: Diaz, Sandra Myrna. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Córdoba. Instituto Multidisciplinario de Biología Vegetal. Universidad Nacional de Córdoba. Facultad de Ciencias Exactas Físicas y Naturales. Instituto Multidisciplinario de Biología Vegetal; Argentina
Fil: Montserrat Martí, G.. Instituto Pirenaico de Ecología. Departamento de Ecología Funcional y Biodiversidad; España
Fil: Funes, Guillermo. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Córdoba. Instituto Multidisciplinario de Biología Vegetal. Universidad Nacional de Córdoba. Facultad de Ciencias Exactas Físicas y Naturales. Instituto Multidisciplinario de Biología Vegetal; Argentina
Fil: Perez Harguindeguy, Natalia. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Córdoba. Instituto Multidisciplinario de Biología Vegetal. Universidad Nacional de Córdoba. Facultad de Ciencias Exactas Físicas y Naturales. Instituto Multidisciplinario de Biología Vegetal; Argentina
Fil: Charles, M.. University of Sheffield. Department of Archaeology; Reino Unido
Fil: Castro Díez, P.. Instituto Pirenaico de Ecología. Departamento de Ecología Funcional y Biodiversidad; España
Fil: Cornelissen, J. H. C.. VU University. Faculty of Earth and Life Sciences. Department of Systems Ecology; Países Bajos
Fil: Jones, G.. University of Sheffield. Department of Archaeology; Reino Unido
Fil: Khoshnevis, M.. Research Institute of Forests and Rangelands; Irán
Fil: Pérez Rontome, M. C.. Instituto Pirenaico de Ecología. Departamento de Ecología Funcional y Biodiversidad; España
Fil: Shirvany, F. A.. Research Institute of Forests and Rangelands; Irán
Fil: Vendramini, Fernanda. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Córdoba. Instituto Multidisciplinario de Biología Vegetal. Universidad Nacional de Córdoba. Facultad de Ciencias Exactas Físicas y Naturales. Instituto Multidisciplinario de Biología Vegetal; Argentina
Fil: Yazdani, S.. Research Institute of Forests and Rangelands; Irán
Fil: Abbas Azimi, R.. Research Institute of Forests and Rangelands; Irán
Fil: Boustan, S.. Research Institute of Forests and Rangelands; Irán
Fil: Dehghan, M.. Research Institute of Forests and Rangelands; Irán
Fil: Guerrero Campo, J.. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Córdoba. Instituto Multidisciplinario de Biología Vegetal. Universidad Nacional de Córdoba. Facultad de Ciencias Exactas Físicas y Naturales. Instituto Multidisciplinario de Biología Vegetal; Argentina
Fil: Hynd, A.. University of Sheffield. Department of Archaeology; Reino Unido
Fil: Kowsary, E.. Research Institute of Forests and Rangelands; Irán
Fil: Kazemi Saeed, F.. Research Institute of Forests and Rangelands; Irán
Fil: Siavash, B.. Research Institute of Forests and Rangelands; Irán
Fil: Villar Salvador, P.. Instituto Pirenaico de Ecología. Departamento de Ecología Funcional y Biodiversidad; España
Fil: Craigie, R.. University of Sheffield. Department of Archaeology; Reino Unido
Fil: Naqinezhad, A.. University of Mazandaran. Faculty of Sciences. Department of Biology; Irán
Fil: Romo Dıez, A.. Institut Botanic de Barcelona; España
Fil: de Torres Espuny, L.. Instituto Pirenaico de Ecología. Departamento de Ecología Funcional y Biodiversidad; España
Fil: Simmons, E.. University of Sheffield. Department of Archaeology; Reino Unido - Materia
-
Stomatal Size
Genome Size
Seed Size
Life History - Nivel de accesibilidad
- acceso abierto
- Condiciones de uso
- https://creativecommons.org/licenses/by-nc-sa/2.5/ar/
- Repositorio
.jpg)
- Institución
- Consejo Nacional de Investigaciones Científicas y Técnicas
- OAI Identificador
- oai:ri.conicet.gov.ar:11336/21673
Ver los metadatos del registro completo
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Stomatal vs. genome size in angiosperms: the somatic tail wagging the genomic dog?Hodgson, J. G.Sharafi, M.Jalili, A.Diaz, Sandra MyrnaMontserrat Martí, G.Funes, GuillermoPerez Harguindeguy, NataliaCharles, M.Castro Díez, P.Cornelissen, J. H. C.Jones, G.Khoshnevis, M.Pérez Rontome, M. C.Shirvany, F. A.Vendramini, FernandaYazdani, S.Abbas Azimi, R.Boustan, S.Dehghan, M.Guerrero Campo, J.Hynd, A.Kowsary, E.Kazemi Saeed, F.Siavash, B.Villar Salvador, P.Craigie, R.Naqinezhad, A.Romo Dıez, A.de Torres Espuny, L.Simmons, E.Stomatal SizeGenome SizeSeed SizeLife Historyhttps://purl.org/becyt/ford/1.6https://purl.org/becyt/ford/1Background and Aims Genome size is a function, and the product, of cell volume. As such it is contingent on ecological circumstance. The nature of ‘this ecological circumstance’ is, however, hotly debated. Here, we investigate for angiosperms whether stomatal size may be this ‘missing link’: the primary determinant of genome size. Stomata are crucial for photosynthesis and their size affects functional efficiency. Methods Stomatal and leaf characteristics were measured for 1442 species from Argentina, Iran, Spain and the UK and, using PCA, some emergent ecological and taxonomic patterns identified. Subsequently, an assessment of the relationship between genome-size values obtained from the Plant DNA C-values database and measurements of stomatal size was carried out. Key Results Stomatal size is an ecologically important attribute. It varies with life-history (woody species, herbaceous species, vernal geophytes) and contributes to ecologically and physiologically important axes of leaf specialization. Moreover, it is positively correlated with genome size across a wide range of major taxa. Conclusions Stomatal size predicts genome size within angiosperms. Correlation is not, however, proof of causality and here our interpretation is hampered by unexpected deficiencies in the scientific literature. Firstly, there are discrepancies between our own observations and established ideas about the ecological significance of stomatal size; very large stomata, theoretically facilitating photosynthesis in deep shade, were, in this study (and in other studies), primarily associated with vernal geophytes of unshaded habitats. Secondly, the lower size limit at which stomata can function efficiently, and the ecological circumstances under which these minute stomata might occur, have not been satisfactorally resolved. Thus, our hypothesis, that the optimization of stomatal size for functional efficiency is a major ecological determinant of genome size, remains unproven.Fil: Hodgson, J. G.. Peak Science and Environment; Reino UnidoFil: Sharafi, M.. University of Mazandaran. Faculty of Sciences.Department of Biology; IránFil: Jalili, A.. Research Institute of Forests and Rangelands; IránFil: Diaz, Sandra Myrna. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Córdoba. Instituto Multidisciplinario de Biología Vegetal. Universidad Nacional de Córdoba. Facultad de Ciencias Exactas Físicas y Naturales. Instituto Multidisciplinario de Biología Vegetal; ArgentinaFil: Montserrat Martí, G.. Instituto Pirenaico de Ecología. Departamento de Ecología Funcional y Biodiversidad; EspañaFil: Funes, Guillermo. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Córdoba. Instituto Multidisciplinario de Biología Vegetal. Universidad Nacional de Córdoba. Facultad de Ciencias Exactas Físicas y Naturales. Instituto Multidisciplinario de Biología Vegetal; ArgentinaFil: Perez Harguindeguy, Natalia. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Córdoba. Instituto Multidisciplinario de Biología Vegetal. Universidad Nacional de Córdoba. Facultad de Ciencias Exactas Físicas y Naturales. Instituto Multidisciplinario de Biología Vegetal; ArgentinaFil: Charles, M.. University of Sheffield. Department of Archaeology; Reino UnidoFil: Castro Díez, P.. Instituto Pirenaico de Ecología. Departamento de Ecología Funcional y Biodiversidad; EspañaFil: Cornelissen, J. H. C.. VU University. Faculty of Earth and Life Sciences. Department of Systems Ecology; Países BajosFil: Jones, G.. University of Sheffield. Department of Archaeology; Reino UnidoFil: Khoshnevis, M.. Research Institute of Forests and Rangelands; IránFil: Pérez Rontome, M. C.. Instituto Pirenaico de Ecología. Departamento de Ecología Funcional y Biodiversidad; EspañaFil: Shirvany, F. A.. Research Institute of Forests and Rangelands; IránFil: Vendramini, Fernanda. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Córdoba. Instituto Multidisciplinario de Biología Vegetal. Universidad Nacional de Córdoba. Facultad de Ciencias Exactas Físicas y Naturales. Instituto Multidisciplinario de Biología Vegetal; ArgentinaFil: Yazdani, S.. Research Institute of Forests and Rangelands; IránFil: Abbas Azimi, R.. Research Institute of Forests and Rangelands; IránFil: Boustan, S.. Research Institute of Forests and Rangelands; IránFil: Dehghan, M.. Research Institute of Forests and Rangelands; IránFil: Guerrero Campo, J.. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Córdoba. Instituto Multidisciplinario de Biología Vegetal. Universidad Nacional de Córdoba. Facultad de Ciencias Exactas Físicas y Naturales. Instituto Multidisciplinario de Biología Vegetal; ArgentinaFil: Hynd, A.. University of Sheffield. Department of Archaeology; Reino UnidoFil: Kowsary, E.. Research Institute of Forests and Rangelands; IránFil: Kazemi Saeed, F.. Research Institute of Forests and Rangelands; IránFil: Siavash, B.. Research Institute of Forests and Rangelands; IránFil: Villar Salvador, P.. Instituto Pirenaico de Ecología. Departamento de Ecología Funcional y Biodiversidad; EspañaFil: Craigie, R.. University of Sheffield. Department of Archaeology; Reino UnidoFil: Naqinezhad, A.. University of Mazandaran. Faculty of Sciences. Department of Biology; IránFil: Romo Dıez, A.. Institut Botanic de Barcelona; EspañaFil: de Torres Espuny, L.. Instituto Pirenaico de Ecología. Departamento de Ecología Funcional y Biodiversidad; EspañaFil: Simmons, E.. University of Sheffield. Department of Archaeology; Reino UnidoOxford University Press2010-04info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersionhttp://purl.org/coar/resource_type/c_6501info:ar-repo/semantics/articuloapplication/pdfapplication/pdfapplication/pdfapplication/pdfhttp://hdl.handle.net/11336/21673Hodgson, J. G.; Sharafi, M.; Jalili, A.; Diaz, Sandra Myrna; Montserrat Martí, G.; et al.; Stomatal vs. genome size in angiosperms: the somatic tail wagging the genomic dog?; Oxford University Press; Annals Of Botany; 105; 4; 4-2010; 573-5840305-7364CONICET DigitalCONICETenginfo:eu-repo/semantics/altIdentifier/url/https://academic.oup.com/aob/article-lookup/doi/10.1093/aob/mcq011info:eu-repo/semantics/altIdentifier/doi/10.1093/aob/mcq011info:eu-repo/semantics/openAccesshttps://creativecommons.org/licenses/by-nc-sa/2.5/ar/reponame:CONICET Digital (CONICET)instname:Consejo Nacional de Investigaciones Científicas y Técnicas2025-09-29T10:06:33Zoai:ri.conicet.gov.ar:11336/21673instacron:CONICETInstitucionalhttp://ri.conicet.gov.ar/Organismo científico-tecnológicoNo correspondehttp://ri.conicet.gov.ar/oai/requestdasensio@conicet.gov.ar; lcarlino@conicet.gov.arArgentinaNo correspondeNo correspondeNo correspondeopendoar:34982025-09-29 10:06:34.201CONICET Digital (CONICET) - Consejo Nacional de Investigaciones Científicas y Técnicasfalse |
| dc.title.none.fl_str_mv |
Stomatal vs. genome size in angiosperms: the somatic tail wagging the genomic dog? |
| title |
Stomatal vs. genome size in angiosperms: the somatic tail wagging the genomic dog? |
| spellingShingle |
Stomatal vs. genome size in angiosperms: the somatic tail wagging the genomic dog? Hodgson, J. G. Stomatal Size Genome Size Seed Size Life History |
| title_short |
Stomatal vs. genome size in angiosperms: the somatic tail wagging the genomic dog? |
| title_full |
Stomatal vs. genome size in angiosperms: the somatic tail wagging the genomic dog? |
| title_fullStr |
Stomatal vs. genome size in angiosperms: the somatic tail wagging the genomic dog? |
| title_full_unstemmed |
Stomatal vs. genome size in angiosperms: the somatic tail wagging the genomic dog? |
| title_sort |
Stomatal vs. genome size in angiosperms: the somatic tail wagging the genomic dog? |
| dc.creator.none.fl_str_mv |
Hodgson, J. G. Sharafi, M. Jalili, A. Diaz, Sandra Myrna Montserrat Martí, G. Funes, Guillermo Perez Harguindeguy, Natalia Charles, M. Castro Díez, P. Cornelissen, J. H. C. Jones, G. Khoshnevis, M. Pérez Rontome, M. C. Shirvany, F. A. Vendramini, Fernanda Yazdani, S. Abbas Azimi, R. Boustan, S. Dehghan, M. Guerrero Campo, J. Hynd, A. Kowsary, E. Kazemi Saeed, F. Siavash, B. Villar Salvador, P. Craigie, R. Naqinezhad, A. Romo Dıez, A. de Torres Espuny, L. Simmons, E. |
| author |
Hodgson, J. G. |
| author_facet |
Hodgson, J. G. Sharafi, M. Jalili, A. Diaz, Sandra Myrna Montserrat Martí, G. Funes, Guillermo Perez Harguindeguy, Natalia Charles, M. Castro Díez, P. Cornelissen, J. H. C. Jones, G. Khoshnevis, M. Pérez Rontome, M. C. Shirvany, F. A. Vendramini, Fernanda Yazdani, S. Abbas Azimi, R. Boustan, S. Dehghan, M. Guerrero Campo, J. Hynd, A. Kowsary, E. Kazemi Saeed, F. Siavash, B. Villar Salvador, P. Craigie, R. Naqinezhad, A. Romo Dıez, A. de Torres Espuny, L. Simmons, E. |
| author_role |
author |
| author2 |
Sharafi, M. Jalili, A. Diaz, Sandra Myrna Montserrat Martí, G. Funes, Guillermo Perez Harguindeguy, Natalia Charles, M. Castro Díez, P. Cornelissen, J. H. C. Jones, G. Khoshnevis, M. Pérez Rontome, M. C. Shirvany, F. A. Vendramini, Fernanda Yazdani, S. Abbas Azimi, R. Boustan, S. Dehghan, M. Guerrero Campo, J. Hynd, A. Kowsary, E. Kazemi Saeed, F. Siavash, B. Villar Salvador, P. Craigie, R. Naqinezhad, A. Romo Dıez, A. de Torres Espuny, L. Simmons, E. |
| author2_role |
author author author author author author author author author author author author author author author author author author author author author author author author author author author author author |
| dc.subject.none.fl_str_mv |
Stomatal Size Genome Size Seed Size Life History |
| topic |
Stomatal Size Genome Size Seed Size Life History |
| purl_subject.fl_str_mv |
https://purl.org/becyt/ford/1.6 https://purl.org/becyt/ford/1 |
| dc.description.none.fl_txt_mv |
Background and Aims Genome size is a function, and the product, of cell volume. As such it is contingent on ecological circumstance. The nature of ‘this ecological circumstance’ is, however, hotly debated. Here, we investigate for angiosperms whether stomatal size may be this ‘missing link’: the primary determinant of genome size. Stomata are crucial for photosynthesis and their size affects functional efficiency. Methods Stomatal and leaf characteristics were measured for 1442 species from Argentina, Iran, Spain and the UK and, using PCA, some emergent ecological and taxonomic patterns identified. Subsequently, an assessment of the relationship between genome-size values obtained from the Plant DNA C-values database and measurements of stomatal size was carried out. Key Results Stomatal size is an ecologically important attribute. It varies with life-history (woody species, herbaceous species, vernal geophytes) and contributes to ecologically and physiologically important axes of leaf specialization. Moreover, it is positively correlated with genome size across a wide range of major taxa. Conclusions Stomatal size predicts genome size within angiosperms. Correlation is not, however, proof of causality and here our interpretation is hampered by unexpected deficiencies in the scientific literature. Firstly, there are discrepancies between our own observations and established ideas about the ecological significance of stomatal size; very large stomata, theoretically facilitating photosynthesis in deep shade, were, in this study (and in other studies), primarily associated with vernal geophytes of unshaded habitats. Secondly, the lower size limit at which stomata can function efficiently, and the ecological circumstances under which these minute stomata might occur, have not been satisfactorally resolved. Thus, our hypothesis, that the optimization of stomatal size for functional efficiency is a major ecological determinant of genome size, remains unproven. Fil: Hodgson, J. G.. Peak Science and Environment; Reino Unido Fil: Sharafi, M.. University of Mazandaran. Faculty of Sciences.Department of Biology; Irán Fil: Jalili, A.. Research Institute of Forests and Rangelands; Irán Fil: Diaz, Sandra Myrna. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Córdoba. Instituto Multidisciplinario de Biología Vegetal. Universidad Nacional de Córdoba. Facultad de Ciencias Exactas Físicas y Naturales. Instituto Multidisciplinario de Biología Vegetal; Argentina Fil: Montserrat Martí, G.. Instituto Pirenaico de Ecología. Departamento de Ecología Funcional y Biodiversidad; España Fil: Funes, Guillermo. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Córdoba. Instituto Multidisciplinario de Biología Vegetal. Universidad Nacional de Córdoba. Facultad de Ciencias Exactas Físicas y Naturales. Instituto Multidisciplinario de Biología Vegetal; Argentina Fil: Perez Harguindeguy, Natalia. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Córdoba. Instituto Multidisciplinario de Biología Vegetal. Universidad Nacional de Córdoba. Facultad de Ciencias Exactas Físicas y Naturales. Instituto Multidisciplinario de Biología Vegetal; Argentina Fil: Charles, M.. University of Sheffield. Department of Archaeology; Reino Unido Fil: Castro Díez, P.. Instituto Pirenaico de Ecología. Departamento de Ecología Funcional y Biodiversidad; España Fil: Cornelissen, J. H. C.. VU University. Faculty of Earth and Life Sciences. Department of Systems Ecology; Países Bajos Fil: Jones, G.. University of Sheffield. Department of Archaeology; Reino Unido Fil: Khoshnevis, M.. Research Institute of Forests and Rangelands; Irán Fil: Pérez Rontome, M. C.. Instituto Pirenaico de Ecología. Departamento de Ecología Funcional y Biodiversidad; España Fil: Shirvany, F. A.. Research Institute of Forests and Rangelands; Irán Fil: Vendramini, Fernanda. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Córdoba. Instituto Multidisciplinario de Biología Vegetal. Universidad Nacional de Córdoba. Facultad de Ciencias Exactas Físicas y Naturales. Instituto Multidisciplinario de Biología Vegetal; Argentina Fil: Yazdani, S.. Research Institute of Forests and Rangelands; Irán Fil: Abbas Azimi, R.. Research Institute of Forests and Rangelands; Irán Fil: Boustan, S.. Research Institute of Forests and Rangelands; Irán Fil: Dehghan, M.. Research Institute of Forests and Rangelands; Irán Fil: Guerrero Campo, J.. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Córdoba. Instituto Multidisciplinario de Biología Vegetal. Universidad Nacional de Córdoba. Facultad de Ciencias Exactas Físicas y Naturales. Instituto Multidisciplinario de Biología Vegetal; Argentina Fil: Hynd, A.. University of Sheffield. Department of Archaeology; Reino Unido Fil: Kowsary, E.. Research Institute of Forests and Rangelands; Irán Fil: Kazemi Saeed, F.. Research Institute of Forests and Rangelands; Irán Fil: Siavash, B.. Research Institute of Forests and Rangelands; Irán Fil: Villar Salvador, P.. Instituto Pirenaico de Ecología. Departamento de Ecología Funcional y Biodiversidad; España Fil: Craigie, R.. University of Sheffield. Department of Archaeology; Reino Unido Fil: Naqinezhad, A.. University of Mazandaran. Faculty of Sciences. Department of Biology; Irán Fil: Romo Dıez, A.. Institut Botanic de Barcelona; España Fil: de Torres Espuny, L.. Instituto Pirenaico de Ecología. Departamento de Ecología Funcional y Biodiversidad; España Fil: Simmons, E.. University of Sheffield. Department of Archaeology; Reino Unido |
| description |
Background and Aims Genome size is a function, and the product, of cell volume. As such it is contingent on ecological circumstance. The nature of ‘this ecological circumstance’ is, however, hotly debated. Here, we investigate for angiosperms whether stomatal size may be this ‘missing link’: the primary determinant of genome size. Stomata are crucial for photosynthesis and their size affects functional efficiency. Methods Stomatal and leaf characteristics were measured for 1442 species from Argentina, Iran, Spain and the UK and, using PCA, some emergent ecological and taxonomic patterns identified. Subsequently, an assessment of the relationship between genome-size values obtained from the Plant DNA C-values database and measurements of stomatal size was carried out. Key Results Stomatal size is an ecologically important attribute. It varies with life-history (woody species, herbaceous species, vernal geophytes) and contributes to ecologically and physiologically important axes of leaf specialization. Moreover, it is positively correlated with genome size across a wide range of major taxa. Conclusions Stomatal size predicts genome size within angiosperms. Correlation is not, however, proof of causality and here our interpretation is hampered by unexpected deficiencies in the scientific literature. Firstly, there are discrepancies between our own observations and established ideas about the ecological significance of stomatal size; very large stomata, theoretically facilitating photosynthesis in deep shade, were, in this study (and in other studies), primarily associated with vernal geophytes of unshaded habitats. Secondly, the lower size limit at which stomata can function efficiently, and the ecological circumstances under which these minute stomata might occur, have not been satisfactorally resolved. Thus, our hypothesis, that the optimization of stomatal size for functional efficiency is a major ecological determinant of genome size, remains unproven. |
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2010 |
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2010-04 |
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http://hdl.handle.net/11336/21673 Hodgson, J. G.; Sharafi, M.; Jalili, A.; Diaz, Sandra Myrna; Montserrat Martí, G.; et al.; Stomatal vs. genome size in angiosperms: the somatic tail wagging the genomic dog?; Oxford University Press; Annals Of Botany; 105; 4; 4-2010; 573-584 0305-7364 CONICET Digital CONICET |
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Hodgson, J. G.; Sharafi, M.; Jalili, A.; Diaz, Sandra Myrna; Montserrat Martí, G.; et al.; Stomatal vs. genome size in angiosperms: the somatic tail wagging the genomic dog?; Oxford University Press; Annals Of Botany; 105; 4; 4-2010; 573-584 0305-7364 CONICET Digital CONICET |
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eng |
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eng |
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Oxford University Press |
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Oxford University Press |
| dc.source.none.fl_str_mv |
reponame:CONICET Digital (CONICET) instname:Consejo Nacional de Investigaciones Científicas y Técnicas |
| reponame_str |
CONICET Digital (CONICET) |
| collection |
CONICET Digital (CONICET) |
| instname_str |
Consejo Nacional de Investigaciones Científicas y Técnicas |
| repository.name.fl_str_mv |
CONICET Digital (CONICET) - Consejo Nacional de Investigaciones Científicas y Técnicas |
| repository.mail.fl_str_mv |
dasensio@conicet.gov.ar; lcarlino@conicet.gov.ar |
| _version_ |
1844613915716091904 |
| score |
13.070432 |