Beyond a single temperature threshold: applying a cumulative thermal stress framework to plant heat tolerance

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dc.article.number662094
dc.catalogadoraba
dc.contributor.authorCook, Alicia
dc.contributor.authorRezende Landaeta, Enrico
dc.contributor.authorPetrou, Katherina
dc.contributor.authorLeigh, Andrea
dc.date.accessioned2023-09-04T17:14:16Z
dc.date.available2023-09-04T17:14:16Z
dc.date.issued2023
dc.description.abstractMost plant thermal tolerance studies focus on single critical thresholds, which are arbitrary and phenomenological, limiting the generality of findings across studies. In animals and microbes, thermal tolerance landscapes describe the more realistic, cumulative effects of temperature. We tested this in plants by measuring the decline in leaf photosynthetic efficiency (F/F) of two species following a combination of temperatures and exposure times. As predicted by the thermal tolerance landscape framework, we demonstrate that a general relationship between stressful temperatures and exposure durations can be effectively employed to quantify and compare heat tolerance within and across plant species and over time. We also show how F/F curves translate to natural conditions, suggesting that natural environmental temperatures often impair photosynthetic function. Our findings provide more robust descriptors of heat tolerance in plants, and suggest that heat tolerance in disparate groups of organisms can be studied with a single analytical framework.
dc.fechaingreso.objetodigital2023-09-01
dc.fuente.origenORCID
dc.identifier.doi10.22541/au.169322784.43792939/v1
dc.identifier.urihttps://doi.org/10.22541/au.169322784.43792939/v1
dc.identifier.urihttps://repositorio.uc.cl/handle/11534/74576
dc.information.autorucFacultad de Ciencias Biológicas; Rezende Landaeta, Enrico; 0000-0002-6245-9605; 104299
dc.language.isoen
dc.nota.accesoContenido completo
dc.pagina.final15
dc.pagina.inicio1
dc.revistaAuthorea
dc.rightsacceso abierto
dc.subjectChlorophyll fluorescence
dc.subjectCritical thermal limits
dc.subjectHeat stress
dc.subjectPhotosynthetic activity
dc.subjectThermal tolerance landscape
dc.subjectThermal death time
dc.subjectTemperature tolerance
dc.subjectT50threshold
dc.subject.ddc570
dc.subject.deweyBiologíaes_ES
dc.titleBeyond a single temperature threshold: applying a cumulative thermal stress framework to plant heat tolerance
dc.typepreprint
sipa.codpersvinculados104299
sipa.trazabilidadORCID;2023-09-04
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