Extending the generality of leaf economic design principles in the cycads, an ancient lineage
Summary: Cycads are the most ancient lineage of living seed plants, but the design of their leaves has received little study. We tested whether cycad leaves are governed by the same fundamental design principles previously established for ferns, conifers and angiosperms, and characterized the unique...
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| Acceso en línea: | https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_0028646X_v206_n2_p817_Zhang http://hdl.handle.net/20.500.12110/paper_0028646X_v206_n2_p817_Zhang |
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paper:paper_0028646X_v206_n2_p817_Zhang2023-06-08T14:55:13Z Extending the generality of leaf economic design principles in the cycads, an ancient lineage Goldstein, Guillermo Hernan Cycas Cycadales Functional convergence Gymnosperms Leaf economic spectrum Leaf hydraulic conductance Photosynthetic capacity Trade-off concentration (composition) hydraulic conductivity leaf morphology nutrient dynamics photosynthesis physiology vascular plant Coniferophyta Cycadales Cycadopsida Cycas Filicophyta Gymnospermae Magnoliophyta Spermatophyta chlorophyll nitrogen phosphorus anatomy and histology angiosperm comparative study Cycadophyta Cycas evapotranspiration gymnosperm light metabolism phenotype photosynthesis physiology plant leaf Angiosperms Chlorophyll Cycadophyta Cycas Gymnosperms Light Nitrogen Phenotype Phosphorus Photosynthesis Plant Leaves Plant Transpiration Summary: Cycads are the most ancient lineage of living seed plants, but the design of their leaves has received little study. We tested whether cycad leaves are governed by the same fundamental design principles previously established for ferns, conifers and angiosperms, and characterized the uniqueness of this relict lineage in foliar trait relationships. Leaf structure, photosynthesis, hydraulics and nutrient composition were studied in 33 cycad species from nine genera and three families growing in two botanical gardens. Cycads varied greatly in leaf structure and physiology. Similarly to other lineages, light-saturated photosynthetic rate per mass (Am) was related negatively to leaf mass per area and positively to foliar concentrations of chlorophyll, nitrogen (N), phosphorus and iron, but unlike angiosperms, leaf photosynthetic rate was not associated with leaf hydraulic conductance. Cycads had lower photosynthetic N use efficiency and higher photosynthetic performance relative to hydraulic capacity compared with other lineages. These findings extend the relationships shown for foliar traits in angiosperms to the cycads. This functional convergence supports the modern synthetic understanding of leaf design, with common constraints operating across lineages, even as they highlight exceptional aspects of the biology of this key relict lineage. © 2015 New Phytologist Trust. Fil:Goldstein, G. Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales; Argentina. 2015 https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_0028646X_v206_n2_p817_Zhang http://hdl.handle.net/20.500.12110/paper_0028646X_v206_n2_p817_Zhang |
| institution |
Universidad de Buenos Aires |
| institution_str |
I-28 |
| repository_str |
R-134 |
| collection |
Biblioteca Digital - Facultad de Ciencias Exactas y Naturales (UBA) |
| topic |
Cycas Cycadales Functional convergence Gymnosperms Leaf economic spectrum Leaf hydraulic conductance Photosynthetic capacity Trade-off concentration (composition) hydraulic conductivity leaf morphology nutrient dynamics photosynthesis physiology vascular plant Coniferophyta Cycadales Cycadopsida Cycas Filicophyta Gymnospermae Magnoliophyta Spermatophyta chlorophyll nitrogen phosphorus anatomy and histology angiosperm comparative study Cycadophyta Cycas evapotranspiration gymnosperm light metabolism phenotype photosynthesis physiology plant leaf Angiosperms Chlorophyll Cycadophyta Cycas Gymnosperms Light Nitrogen Phenotype Phosphorus Photosynthesis Plant Leaves Plant Transpiration |
| spellingShingle |
Cycas Cycadales Functional convergence Gymnosperms Leaf economic spectrum Leaf hydraulic conductance Photosynthetic capacity Trade-off concentration (composition) hydraulic conductivity leaf morphology nutrient dynamics photosynthesis physiology vascular plant Coniferophyta Cycadales Cycadopsida Cycas Filicophyta Gymnospermae Magnoliophyta Spermatophyta chlorophyll nitrogen phosphorus anatomy and histology angiosperm comparative study Cycadophyta Cycas evapotranspiration gymnosperm light metabolism phenotype photosynthesis physiology plant leaf Angiosperms Chlorophyll Cycadophyta Cycas Gymnosperms Light Nitrogen Phenotype Phosphorus Photosynthesis Plant Leaves Plant Transpiration Goldstein, Guillermo Hernan Extending the generality of leaf economic design principles in the cycads, an ancient lineage |
| topic_facet |
Cycas Cycadales Functional convergence Gymnosperms Leaf economic spectrum Leaf hydraulic conductance Photosynthetic capacity Trade-off concentration (composition) hydraulic conductivity leaf morphology nutrient dynamics photosynthesis physiology vascular plant Coniferophyta Cycadales Cycadopsida Cycas Filicophyta Gymnospermae Magnoliophyta Spermatophyta chlorophyll nitrogen phosphorus anatomy and histology angiosperm comparative study Cycadophyta Cycas evapotranspiration gymnosperm light metabolism phenotype photosynthesis physiology plant leaf Angiosperms Chlorophyll Cycadophyta Cycas Gymnosperms Light Nitrogen Phenotype Phosphorus Photosynthesis Plant Leaves Plant Transpiration |
| description |
Summary: Cycads are the most ancient lineage of living seed plants, but the design of their leaves has received little study. We tested whether cycad leaves are governed by the same fundamental design principles previously established for ferns, conifers and angiosperms, and characterized the uniqueness of this relict lineage in foliar trait relationships. Leaf structure, photosynthesis, hydraulics and nutrient composition were studied in 33 cycad species from nine genera and three families growing in two botanical gardens. Cycads varied greatly in leaf structure and physiology. Similarly to other lineages, light-saturated photosynthetic rate per mass (Am) was related negatively to leaf mass per area and positively to foliar concentrations of chlorophyll, nitrogen (N), phosphorus and iron, but unlike angiosperms, leaf photosynthetic rate was not associated with leaf hydraulic conductance. Cycads had lower photosynthetic N use efficiency and higher photosynthetic performance relative to hydraulic capacity compared with other lineages. These findings extend the relationships shown for foliar traits in angiosperms to the cycads. This functional convergence supports the modern synthetic understanding of leaf design, with common constraints operating across lineages, even as they highlight exceptional aspects of the biology of this key relict lineage. © 2015 New Phytologist Trust. |
| author |
Goldstein, Guillermo Hernan |
| author_facet |
Goldstein, Guillermo Hernan |
| author_sort |
Goldstein, Guillermo Hernan |
| title |
Extending the generality of leaf economic design principles in the cycads, an ancient lineage |
| title_short |
Extending the generality of leaf economic design principles in the cycads, an ancient lineage |
| title_full |
Extending the generality of leaf economic design principles in the cycads, an ancient lineage |
| title_fullStr |
Extending the generality of leaf economic design principles in the cycads, an ancient lineage |
| title_full_unstemmed |
Extending the generality of leaf economic design principles in the cycads, an ancient lineage |
| title_sort |
extending the generality of leaf economic design principles in the cycads, an ancient lineage |
| publishDate |
2015 |
| url |
https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_0028646X_v206_n2_p817_Zhang http://hdl.handle.net/20.500.12110/paper_0028646X_v206_n2_p817_Zhang |
| work_keys_str_mv |
AT goldsteinguillermohernan extendingthegeneralityofleafeconomicdesignprinciplesinthecycadsanancientlineage |
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1768542494123884544 |