Of puzzles and pavements: a quantitative exploration of leaf epidermal cell shape
| العنوان: | Of puzzles and pavements: a quantitative exploration of leaf epidermal cell shape |
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| المؤلفون: | Madelaine E. Bartlett, Joseph P. Gallagher, Róza Vőfély, Grace D Pisano, Siobhan A. Braybrook |
| المساهمون: | Gallagher, Joseph [0000-0003-0378-7112], Bartlett, Madelaine [0000-0002-0369-8606], Braybrook, Siobhan A [0000-0002-4308-5580], Apollo - University of Cambridge Repository |
| المصدر: | The New Phytologist |
| بيانات النشر: | Wiley, 2018. |
| سنة النشر: | 2018 |
| مصطلحات موضوعية: | 0106 biological sciences, 0301 basic medicine, Vascular plant, Physiology, Context (language use), Plant anatomy, Plant Science, pavement cell, phylogeny, 01 natural sciences, cell shape, Plant Epidermis, diversity, 03 medical and health sciences, Form and function, Plant Cells, Arabidopsis, Botany, Image Processing, Computer-Assisted, Arabidopsis thaliana, Eudicots, 030304 developmental biology, Morphometrics, 0303 health sciences, Pavement cells, Full Paper, morphometrics, biology, Research, food and beverages, Plants, Full Papers, 15. Life on land, biology.organism_classification, Trichome, Plant Leaves, 030104 developmental biology, Plant morphology, Anisotropy, Fern, 010606 plant biology & botany |
| الوصف: | SummaryThe epidermal cells of leaves lend themselves readily to observation and display many shapes and types: tabular pavement cells, complex trichomes, and stomatal complexes1. Pavement cells fromZea mays(maize) andArabidopsis thaliana(arabidopsis) both have highly undulate anticlinal walls and are held as representative of monocots and eudicots, respectively. In these two model species, we have a nuanced understanding of the molecular mechanisms that generate undulating pavement cell shape2–9. This model-system dominance has led to two common assumptions: first, that particular plant lineages are characterized by particular pavement cell shapes; and second, that undulatory pavement cell shapes are common enough to be model shapes. To test these assumptions, we quantified pavement cell shape in the leaves of 278 vascular plant taxa and assessed cell shape metrics across large taxonomic groups. We settled on two metrics that described cell shape diversity well in this dataset: aspect ratio (degree of cell elongation) and solidity (a proxy for margin undulation). We found that pavement cells in the monocots tended to have weakly undulating margins, pavement cells in ferns had strongly undulating margins, and pavement cells in the eudicots showed no particular degree of undulation. Indeed, we found that cells with strongly undulating margins, like those of arabidopsis and maize, were in the minority in seed plants. At the organ level, we found a trend towards cells with more undulating margins on the abaxial leaf surface vs. the adaxial surface. We also detected a correlation between cell and leaf aspect ratio: highly elongated leaves tended to have highly elongated cells (low aspect ratio), but not in the eudicots. This indicates that while plant anatomy and plant morphology can be connected, superficially similar leaves can develop through very different underlying growth dynamics (cell expansion and division patterns). This work reveals the striking diversity of pavement cell shapes across vascular plants, and lays the quantitative groundwork for testing hypotheses about pavement cell form and function. |
| وصف الملف: | application/pdf |
| تدمد: | 1469-8137 0028-646X |
| URL الوصول: | https://explore.openaire.eu/search/publication?articleId=doi_dedup___::02c8e3c8dba2cc80083caf46e4bd6510 https://doi.org/10.1111/nph.15461 |
| حقوق: | OPEN |
| رقم الأكسشن: | edsair.doi.dedup.....02c8e3c8dba2cc80083caf46e4bd6510 |
| قاعدة البيانات: | OpenAIRE |
| تدمد: | 14698137 0028646X |
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