Fitxers

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2024-07-01

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cc by (c) Julián Nevado, Clara et al. 2024
Si us plau utilitzeu sempre aquest identificador per citar o enllaçar aquest document: https://hdl.handle.net/2445/228008

Biological outliers: essential elements to understand the causes and consequences of reductions in maximum photochemical efficiency of PSII in plants

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Recurs relacionat

https://doi.org/10.1007/s00425-024-04466-3

Resum

Outliers are individuals with exceptional traits that are often excluded of data analysis. However, this may result in very important mistakes not accurately capturing the true trajectory of the population, thereby limiting our understanding of a given biological process. Here, we studied the role of biological outliers in understanding the causes and consequences of maximum photochemical efficiency decreases in plants, using the semi-deciduous shrub C. albidus growing in a Mediterranean-type ecosystem. We assessed interindividual variability in winter, spring and summer maximum PSII photochemical efficiency in a population of C. albidus growing under Mediterranean conditions. A strong correlation was observed between maximum PSII photochemical efficiency (Fv/Fm ratio) and leaf water desiccation. While decreases in maximum PSII photochemical efficiency did not result in any damage at the organ level during winter, reductions in the Fv/Fm ratio were associated to leaf mortality during summer. However, all plants could recover after rainfalls, thus maximum PSII photochemical efficiency decreases did not result in an increased mortality at the organism level, despite extreme water deficit and temperatures exceeding 40ºC during the summer. We conclude that, once methodological outliers are excluded, not only biological outliers must not be excluded from data analysis, but focusing on them is crucial to understand the causes and consequences of maximum PSII photochemical efficiency decreases in plants.

Matèries

Fotosíntesi, Efecte de l'estrès sobre les plantes, Fisiologia vegetal

Matèries (anglès)

Photosynthesis, Effect of stress on plants, Plant physiology

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Articles publicats en revistes (Biologia Evolutiva, Ecologia i Ciències Ambientals)
Articles publicats en revistes (Institut de Recerca de la Biodiversitat (IRBio))

Citació

JULIÁN NEVADO, Clara, et al. Biological outliers: essential elements to understand the causes and consequences of reductions in maximum photochemical efficiency of PSII in plants. Planta. 2024. Vol. 260. ISSN 0032-0935. [consulted: 13 of May of 2026]. Available at: https://hdl.handle.net/2445/228008

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