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- W2912658971 endingPage "1684" @default.
- W2912658971 startingPage "1665" @default.
- W2912658971 abstract "Abstract Understanding forest tree responses to climate warming and heatwaves is important for predicting changes in tree species diversity, forest C uptake, and vegetation–climate interactions. Yet, tree species differences in heatwave tolerance and their plasticity to growth temperature remain poorly understood. In this study, populations of four Eucalyptus species, two with large range sizes and two with comparatively small range sizes, were grown under two temperature treatments (cool and warm) before being exposed to an equivalent experimental heatwave. We tested whether the species with large and small range sizes differed in heatwave tolerance, and whether trees grown under warmer temperatures were more tolerant of heatwave conditions than trees grown under cooler temperatures. Visible heatwave damage was more common and severe in the species with small rather than large range sizes. In general, species that showed less tissue damage maintained higher stomatal conductance, lower leaf temperatures, larger increases in isoprene emissions, and less photosynthetic inhibition than species that showed more damage. Species exhibiting more severe visible damage had larger increases in heat shock proteins (HSPs) and respiratory thermotolerance ( T max ). Thus, across species, increases in HSPs and T max were positively correlated, but inversely related to increases in isoprene emissions. Integration of leaf gas‐exchange, isoprene emissions, proteomics, and respiratory thermotolerance measurements provided new insight into mechanisms underlying variability in tree species heatwave tolerance. Importantly, warm‐grown seedlings were, surprisingly, more susceptible to heatwave damage than cool‐grown seedlings, which could be associated with reduced enzyme concentrations in leaves. We conclude that species with restricted range sizes, along with trees growing under climate warming, may be more vulnerable to heatwaves of the future." @default.
- W2912658971 created "2019-02-21" @default.
- W2912658971 creator A5003371178 @default.
- W2912658971 creator A5015254107 @default.
- W2912658971 creator A5025094320 @default.
- W2912658971 creator A5025550711 @default.
- W2912658971 creator A5044264078 @default.
- W2912658971 creator A5045802678 @default.
- W2912658971 creator A5046996834 @default.
- W2912658971 creator A5065668860 @default.
- W2912658971 creator A5079683093 @default.
- W2912658971 creator A5080872209 @default.
- W2912658971 creator A5080959755 @default.
- W2912658971 creator A5089647680 @default.
- W2912658971 date "2019-03-10" @default.
- W2912658971 modified "2023-10-17" @default.
- W2912658971 title "Range size and growth temperature influence <i>Eucalyptus</i> species responses to an experimental heatwave" @default.
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