Responses to heatwaves of gas exchange, chlorophyll fluorescence and antioxidants ascorbic acid and glutathione in congeneric pairs of Acacia and Eucalyptus species from relatively cooler and warmer climates

Wujeska‐Klause, Agnieszka; Bossinger, Gerd; Tausz, Michael

doi:10.1007/s00468-015-1274-4

Cited by 10 publications

(12 citation statements)

References 62 publications

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“…Therefore, despite growing side‐by‐side with adequate water supply, species differed in stomatal regulation of T leaf during the heatwave, causing species to experience “different” heatwaves. Our results add to the growing number of studies showing that species may vary in their stomatal responses to high temperatures (Ameye et al, ; Drake et al, ; Fauset et al, ; Hammerlynck & Knapp, ; Urban et al, ; Wujeska‐Klause et al, ). Our results suggest that further work is required to identify patterns in stomatal responses to heatwave conditions across species, and associations with species performance during heatwaves.…”

Section: Discussionsupporting

confidence: 71%

“…heatwaves. Our results add to the growing number of studies showing that species may vary in their stomatal responses to high temperatures (Ameye et al, 2012;Drake et al, 2018;Fauset et al, 2018;Hammerlynck & Knapp, 1996;Urban et al, 2017;Wujeska-Klause et al, 2015). Our results suggest that further work is required to identify patterns in stomatal responses to heatwave conditions across species, and associations with species performance during heatwaves.…”

Section: Physiological and Biochemical Factors Associated With Specsupporting

confidence: 56%

“…A few studies have demonstrated that tree species may vary in their physiological and biochemical responses to heatwaves (Ameye et al, 2012;Guha, Han, Cummings, McLennan, & Warren, 2018;Wujeska-Klause, Bossinger, & Tausz, 2015). Even when high temperatures reduce A, some tree species maintain high g s (and transpiration) which helps cool leaves (Drake et al, 2018;Urban, Ingwers, McGuire, & Teskey, 2017).…”

Section: Introductionmentioning

confidence: 99%

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Range size and growth temperature influence Eucalyptus species responses to an experimental heatwave

Aspinwall

Pfautsch

Tjoelker

et al. 2019

Global Change Biology

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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 (Tmax). Thus, across species, increases in HSPs and Tmax 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.

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Section: Discussionsupporting

confidence: 71%

Section: Physiological and Biochemical Factors Associated With Specsupporting

confidence: 56%

Section: Introductionmentioning

confidence: 99%

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Range size and growth temperature influence Eucalyptus species responses to an experimental heatwave

Aspinwall

Pfautsch

Tjoelker

et al. 2019

Global Change Biology

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“…In particular, extreme climate events and rapid changes in climate can cause physiological stress and damage to plants ( Bastos et al , 2014 ; Zinta et al , 2014 ). Threatened plant species are already in danger and thus are vulnerable to extreme climate events like the 2003 summer heatwave, showing that inappropriate land management can threaten the existence of plant species ( Bastos et al , 2014 ; Zinta et al , 2014 ; Wujeska-Klause, Bossinger & Tausz , 2015 ). Furthermore, we found that the threatened tree species within nature reserves would be strongly affected by climate change, particularly under the high concentration scenario by the 2080s.…”

Section: Discussionmentioning

confidence: 99%

Climate change may threaten habitat suitability of threatened plant species within Chinese nature reserves

Wang

Liu

Wan

et al. 2016

PeerJ

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Climate change has the potential to alter the distributions of threatened plant species, and may therefore diminish the capacity of nature reserves to protect threatened plant species. Chinese nature reserves contain a rich diversity of plant species that are at risk of becoming more threatened by climate change. Hence, it is urgent to identify the extent to which future climate change may compromise the suitability of threatened plant species habitats within Chinese nature reserves. Here, we modelled the climate suitability of 82 threatened plant species within 168 nature reserves across climate change scenarios. We used Maxent modelling based on species occurrence localities and evaluated climate change impacts using the magnitude of change in climate suitability and the degree of overlap between current and future climatically suitable habitats. There was a significant relationship between overlap with current and future climate suitability of all threatened plant species habitats and the magnitude of changes in climate suitability. Our projections estimate that the climate suitability of more than 60 threatened plant species will decrease and that climate change threatens the habitat suitability of plant species in more than 130 nature reserves under the low, medium, and high greenhouse gas concentration scenarios by both 2050s and 2080s. Furthermore, future climate change may substantially threaten tree plant species through changes in annual mean temperature. These results indicate that climate change may threaten plant species that occur within Chinese nature reserves. Therefore, we suggest that climate change projections should be integrated into the conservation and management of threatened plant species within nature reserves.

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“…Plant responses to high temperature, in addition to the damage triggered by this stress, vary widely among species and functional groups (Klockmann, Günter, & Fischer, ; Marias, Meinzer, & Still, ; O'Sullivan et al, ; Slot & Winter, ; Teskey et al, ; Wujeska‐Klause, Bossinger, & Tausz, ). Accordingly, the susceptibility of a plant to extremely high temperatures, a situation commonly observed during heat waves, appears to depend on a series of characteristics and adjustments at morpho‐anatomical (crown architecture, leaf size, and shape), physiological (transpiration rate and maximum stomatal conductance), and molecular (production of heat shock proteins, low‐weight compounds, and activation of the antioxidative defense system) levels (Bita & Gerats, ; Galmés, Kapralov, Copolovici, Hermida‐Carrera, & Niinemets, ; Griffin & Prager, ; Obata et al, ; Scafaro et al, ; Slot & Winter, ; Teskey et al, ; Wujeska‐Klause et al, ; Zhang et al, ). Moreover, the vulnerability of a species to high temperatures also depends on its growth strategy.…”

Section: Main Drivers Of Forest Dieback Under a Scenario Of Climate Cmentioning

confidence: 99%

Different ways to die in a changing world: Consequences of climate change for tree species performance and survival through an ecophysiological perspective

Menezes‐Silva

Loram‐Lourenço

Alves

et al. 2019

Ecology and Evolution

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Anthropogenic activities such as uncontrolled deforestation and increasing greenhouse gas emissions are responsible for triggering a series of environmental imbalances that affect the Earth's complex climate dynamics. As a consequence of these changes, several climate models forecast an intensification of extreme weather events over the upcoming decades, including heat waves and increasingly severe drought and flood episodes. The occurrence of such extreme weather will prompt profound changes in several plant communities, resulting in massive forest dieback events that can trigger a massive loss of biodiversity in several biomes worldwide. Despite the gravity of the situation, our knowledge regarding how extreme weather events can undermine the performance, survival, and distribution of forest species remains very fragmented. Therefore, the present review aimed to provide a broad and integrated perspective of the main biochemical, physiological, and morpho‐anatomical disorders that may compromise the performance and survival of forest species exposed to climate change factors, particularly drought, flooding, and global warming. In addition, we also discuss the controversial effects of high CO2 concentrations in enhancing plant growth and reducing the deleterious effects of some extreme climatic events. We conclude with a discussion about the possible effects that the factors associated with the climate change might have on species distribution and forest composition.

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Responses to heatwaves of gas exchange, chlorophyll fluorescence and antioxidants ascorbic acid and glutathione in congeneric pairs of Acacia and Eucalyptus species from relatively cooler and warmer climates

Cited by 10 publications

References 62 publications

Range size and growth temperature influence Eucalyptus species responses to an experimental heatwave

Range size and growth temperature influence Eucalyptus species responses to an experimental heatwave

Climate change may threaten habitat suitability of threatened plant species within Chinese nature reserves

Different ways to die in a changing world: Consequences of climate change for tree species performance and survival through an ecophysiological perspective

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