Acclimation of Leaf Dark Respiration to Temperature in Alpine and Lowland Plant Species

Larigauderie, Anne; Körner, Christian

doi:10.1006/anbo.1995.1093

Cited by 218 publications

(226 citation statements)

References 28 publications

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“…Acclimation results in R dark being of similar magnitude in plants grown at different temperatures when measured at their respective growth temperatures (Larigauderie and Körner, 1995;Atkin and Tjoelker, 2003) and also results in R dark at 25 • C, increasing upon cold acclimation and declining upon acclimation to warmer temperature . Growth temperature-dependent changes in R dark at a standard temperature can occur over periods of 1-3 days (Atkin et al, 2000;Bolstad et al, 2003;Lee et al, 2005;Zaragoza-Castells et al, 2007;Armstrong et al, 2008).…”

Section: Introductionmentioning

confidence: 70%

Thermal acclimation of leaf photosynthetic traits in an evergreen woodland, consistent with the coordination hypothesis

et al. 2018

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Abstract. Ecosystem models commonly assume that key photosynthetic traits, such as carboxylation capacity measured at a standard temperature, are constant in time. The temperature responses of modelled photosynthetic or respiratory rates then depend entirely on enzyme kinetics. Optimality considerations, however, suggest this assumption may be incorrect. The "coordination hypothesis" (that Rubisco-and electron-transport-limited rates of photosynthesis are co-limiting under typical daytime conditions) predicts, instead, that carboxylation (V cmax ) capacity should acclimate so that it increases somewhat with growth temperature but less steeply than its instantaneous response, implying that V cmax when normalized to a standard temperature (e.g. 25 • C) should decline with growth temperature. With additional assumptions, similar predictions can be made for electron-transport capacity (J max ) and mitochondrial respiration in the dark (R dark ). To explore these hypotheses, photosynthetic measurements were carried out on woody species during the warm and the cool seasons in the semi-arid Great Western Woodlands, Australia, under broadly similar light environments. A consistent proportionality between V cmax and J max was found across species. V cmax , J max and R dark increased with temperature in most species, but their values standardized to 25 • C declined. The c i : c a ratio increased slightly with temperature. The leaf N : P ratio was lower in the warm season. The slopes of the relationships between log-transformed V cmax and J max and temperature were close to values predicted by the coordination hypothesis but shallower than those predicted by enzyme kinetics.

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Section: Introductionmentioning

confidence: 70%

Thermal acclimation of leaf photosynthetic traits in an evergreen woodland, consistent with the coordination hypothesis

et al. 2018

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“…The adaptive metabolic mechanisms to low-temperature regimes may strongly vary among invertebrates and vascular plants, but could have similar detrimental consequences under warmer conditions. For example, the limited ability of some invertebrates to invoke diapause for nutritional regulation in the absence of sufficiently low temperatures (Hodkinson 2005) and the inability of cryophilic vascular plants for respiratory adjustments to higher temperatures (Larigauderie and Körner 1995) both would limit population growth rates.…”

Section: Discussionmentioning

confidence: 99%

Side by side? Vascular plant, invertebrate, and microorganism distribution patterns along an alpine to nival elevation gradient

Winkler

Illmer

Querner

et al. 2018

Arctic, Antarctic, and Alpine Research

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High mountain areas above the alpine zone are, despite the low-temperature conditions, inhabited by evolutionary and functionally differing organism groups. We compared the abundance and species richness of vascular plants, oribatid mites, springtails, spiders, and beetles, as well as bacterial and methanogenic archaeal prokaryotes (only abundance), at 100 m vertical intervals from 2,700-3,400 m in the Central Alps. We hypothesized that the less mobile microarthropods and microorganisms are more determined by and respond in similar ways to soil properties as do vascular plants. In contrast, we expected the more mobile surface-dwelling groups to forage also in places devoid of vegetation and thus to show patterns that deviate from that of vascular plants.Surprisingly, the observed patterns were diametrically opposed to our expectations: soil-living oribatid mites and springtails showed high individual numbers at high elevations, even where vascular plants barely occurred. Springtails also showed a rather constant species richness throughout the entire gradient. In contrast, patterns of surface-dwelling organisms and of archaeal prokaryotes did not differ significantly from vascular plants, because of either comparable climate sensitivity or their dependency on vegetated habitats.This study may serve as a baseline to estimate the risks of biodiversity losses in response to climate change across different biotic ecosystem components and to explore the potential and limitations of vascular plants as proxy for other organism groups that are far more challenging to monitor. ARTICLE HISTORY

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“…2), and also seemed to be unaffected by any of the other investigated meteorological parameters (Table 2). Plant respiratory activity is thought to be determined by three processes, substrate supply, demand for respiratory products and potential enzyme capacity (Amthor 1995;Lambers et al 1998;Atkin et al 2005). Limited light availability due to cloud cover is known to strongly reduce net carbon gain of tropical forests on a seasonal as well as daily basis (Hollinger et al 1994;Chen et al 1999;Graham et al 2003).…”

Section: Discussionmentioning

confidence: 99%

“…Stem respiration usually depends on substrate availability, the demand for energy equivalents and the enzymatic activity (Amthor 1995;Lambers et al 1998;Pruyn et al 2002Pruyn et al , 2005Atkin et al 2005). However, it is still barely understood how stem CO 2 release (R S ) is finally controlled and how internally circulating CO 2 is influencing the apparent efflux.…”

Section: Introductionmentioning

confidence: 99%

Diverging temperature response of tree stem CO2 release under dry and wet season conditions in a tropical montane moist forest

Zach

Horna

Leuschner

2009

Trees

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It is commonly presumed that plant respiratory CO 2 release increases with increasing temperature. However, we report on very contrasting stem CO 2 release (R S )-temperature relationships of trees in a species-rich tropical montane forest of southern Ecuador under dry and wet season conditions. Rates of R S were low and completely uncoupled from the dial temperature regime during the humid season. In contrast, during the dry season, R S was generally higher and temperature sensitivity of R S differed greatly in degree and even in the direction of response, indicating that temperature might not be the only determinant of R S . In order to explain the heterogeneity of R S , we related R S to vapour pressure deficit, wind speed and solar radiation as important abiotic drivers influencing transpiration and photosynthesis. Stepwise multiple regression analyses with these meteorological predictors either were biased by high collinearity of the independent variables or could not enhance the ability to explain the variability of R S . We assume maintenance respiration to dominate under humid conditions unfavourable for energy acquisition of the tree, thus explaining the pronounced uncoupling of R S from atmospheric parameters. In contrast, the drier and hotter climate of the dry season seems to favour R S via enhanced assimilatory substrate delivery and stem respiratory activity as well as elevated xylem sap CO 2 imports with increased transpiration. In addition, tree individual differences in the temperature responses of R S may mirror diverging climatic adaptations of co-existing moist forest tree species which have their distribution centre either at higher or lower elevations.

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Acclimation of Leaf Dark Respiration to Temperature in Alpine and Lowland Plant Species

Cited by 218 publications

References 28 publications

Thermal acclimation of leaf photosynthetic traits in an evergreen woodland, consistent with the coordination hypothesis

Thermal acclimation of leaf photosynthetic traits in an evergreen woodland, consistent with the coordination hypothesis

Side by side? Vascular plant, invertebrate, and microorganism distribution patterns along an alpine to nival elevation gradient

Diverging temperature response of tree stem CO2 release under dry and wet season conditions in a tropical montane moist forest

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