Allometries of cell and tissue anatomy and photosynthetic rate across leaves of C 3 and C 4 grasses.

Autor: Baird AS; Department of Ecology and Evolutionary Biology, University of California Los Angeles, Los Angeles, California, USA., Taylor SH; Lancaster Environment Centre, Lancaster University, Lancaster, UK., Reddi S; Department of Ecology and Evolutionary Biology, University of California Los Angeles, Los Angeles, California, USA., Pasquet-Kok J; Department of Ecology and Evolutionary Biology, University of California Los Angeles, Los Angeles, California, USA., Vuong C; Department of Ecology and Evolutionary Biology, University of California Los Angeles, Los Angeles, California, USA., Zhang Y; Department of Ecology and Evolutionary Biology, University of California Los Angeles, Los Angeles, California, USA., Watcharamongkol T; Department of Animal and Plant Sciences, University of Sheffield, Sheffield, UK.; Faculty of Science and Technology, Kanchanaburi Rajabhat University, Kanchanaburi, Thailand., John GP; Department of Ecology and Evolutionary Biology, University of California Los Angeles, Los Angeles, California, USA.; Department of Biology, University of Florida, Gainesville, Florida, USA., Scoffoni C; Department of Ecology and Evolutionary Biology, University of California Los Angeles, Los Angeles, California, USA.; Department of Biological Sciences, California State University Los Angeles, Los Angeles, California, USA., Osborne CP; Department of Animal and Plant Sciences, University of Sheffield, Sheffield, UK., Sack L; Department of Ecology and Evolutionary Biology, University of California Los Angeles, Los Angeles, California, USA.
Jazyk: angličtina
Zdroj: Plant, cell & environment [Plant Cell Environ] 2024 Jan; Vol. 47 (1), pp. 156-173. Date of Electronic Publication: 2023 Oct 24.
DOI: 10.1111/pce.14741
Abstrakt: Allometric relationships among the dimensions of leaves and their cells hold across diverse eudicotyledons, but have remained untested in the leaves of grasses. We hypothesised that geometric (proportional) allometries of cell sizes across tissues and of leaf dimensions would arise due to the coordination of cell development and that of cell functions such as water, nutrient and energy transport, and that cell sizes across tissues would be associated with light-saturated photosynthetic rate. We tested predictions across 27 globally distributed C 3 and C 4 grass species grown in a common garden. We found positive relationships among average cell sizes within and across tissues, and of cell sizes with leaf dimensions. Grass leaf anatomical allometries were similar to those of eudicots, with exceptions consistent with the fewer cell layers and narrower form of grass leaves, and the specialised roles of epidermis and bundle sheath in storage and leaf movement. Across species, mean cell sizes in each tissue were associated with light-saturated photosynthetic rate per leaf mass, supporting the functional coordination of cell sizes. These findings highlight the generality of evolutionary allometries within the grass lineage and their interlinkage with coordinated development and function.
(© 2023 The Authors. Plant, Cell & Environment published by John Wiley & Sons Ltd.)
Databáze: MEDLINE
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