Elevational differentiation in metabolic cold stress responses of an endemic mountain tree

Schrieber, Karin; Cáceres, Yolanda; Engelmann, Alicia; Marcora, Paula Inés; Renison, Daniel; Hensen, Isabell; Müller, Caroline

doi:10.1016/j.envexpbot.2019.103918

Cited by 16 publications

(11 citation statements)

References 61 publications

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“…1R), and the result was significant only when phylogeny was not considered (A3, model 15). In contrast, a number of earlier studies documented rather consistently that highelevation tree species were more frost resistant (Körner 2003;Taschler and Neuner 2004;Neuner 2014;Neuner et al 2020;Schrieber et al 2020). The discrepancy may have two potential reasons.…”

Section: Trait Differences Between Low-and High-elevation Speciesmentioning

confidence: 84%

Trait divergence and trade-offs among Brassicaceae species differing in elevational distribution

Maccagni

Willi

2022

Preprint

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Species have restricted geographic distributions and the causes are still largely unknown. Temperature has long been associated with distribution limits, suggesting that there are ubiquitous constraints to the evolution of the climate niche. Here we investigated the traits involved in such constraints by macroevolutionary comparisons involving around 100 Brassicaceae species differing in elevational distribution. Plants were grown under three temperature treatments (regular frost, mild, regular heat) and phenotyped for phenological, morphological and thermal resistance traits. Trait values were analysed by assessing the effect of temperature and elevational distribution, by comparing models of evolutionary trajectories, and by correlative approaches to identify trade-offs. Analyses pointed to size, leaf morphology and growth under heat as among the most discriminating traits between low- and high-elevation species, with high-elevation species growing faster under the occurrence of regular heat bouts, at the cost of much reduced size. Mixed models and evolutionary models supported adaptive divergence for these traits, and correlation analysis indicated their involvement in moderate trade-offs. Finally, we found asymmetry in trait evolution, with evolvability across traits being 50% less constrained under regular frost. Overall, results suggest that trade-offs between traits under adaptive divergence contribute to the disparate distribution of species along the elevational gradient.

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Section: Trait Differences Between Low-and High-elevation Speciesmentioning

confidence: 84%

Trait divergence and trade-offs among Brassicaceae species differing in elevational distribution

Maccagni

Willi

2022

Preprint

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“…Thus, plants from the high origin might show a tradeoff between growth and freezing resistance, and prioritize security rather than vigour [3]. In fact, previous studies assessing the same elevation gradient found that P. australis populations from high elevation exhibit more pronounced metabolic cold stress responses, with a partially broader reliance on cold stress intensity than populations from low elevations [31]. Given these results, it would be important to experimentally separate the influence of climatic factors and herbivory by small animals on the regeneration of this species and on the development of ecotypes along the entire elevation gradient of the distribution range.…”

Section: Disentangling the Effects Of Origin And Elevation Site On Each Performance Variablementioning

confidence: 99%

“…The differences in plant performance between elevations described in those field studies could be a consequence of phenotypic plasticity, considering that populations appear to be connected by effective long-distance pollination [27,28] and that they are not genetically structured throughout elevation gradients [29]. However, common garden experiments under greenhouse conditions showed that populations from different elevations inherit morphological, physiological and metabolic adjustments [30,31]. In addition, it is known that populations at marginal habitats might become locally adapted despite gene flow [19].…”

Section: Introductionmentioning

confidence: 99%

Are populations of Polylepis australis locally adapted along their elevation gradient?

Marcora

Tecco

Ferrero

et al. 2021

Neotropical Biodiversity

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Mountain ecosystems are characterized by steep environmental gradients. Species with broad elevation distribution are exposed to contrasting climatic conditions along their gradients. In response to those changes, species might develop ecotypes adapted to the local climate. Early regeneration is the most critical stage for plant populations and, therefore, withstands strong selection pressures. Previous studies showed a unimodal pattern of intraspecific variability in fitness components among Polylepis australis populations along their elevation gradient in the mountains of central Argentina. Whether this variability is the result of local populations' adjustments to their respective site remains unknown. We tested the hypothesis that P. australis populations from different elevations would be locally adapted to their local environments, where they would perform better than populations from other elevations (origins). We applied an experimental approach by establishing common gardens at three contrasting elevations. Seeds and saplings of P. australis populations from the low, mid-and high elevation belts of the species distribution gradient (i.e. three origins) were reciprocally sown and transplanted in three elevation sites (low, mid-and high). Seed germination success, sapling growth and mortality were monitored for three years. Our main results show that the origin of populations influenced germination success and sapling growth, whereas sapling mortality was marginally affected. Populations of both elevation extremes seem to be more adjusted to local conditions than the population from the intermediate elevation, probably due to the harsher environmental conditions for plant regeneration typical of the lower and upper elevation belts of semiarid mountains. Finally, our results strongly suggest that temperature rise due to climate change in this mountain area might have negative effects on the regeneration of P. australis populations.

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“…Metabolomics are a promising tool to approach this aim, as they can yield insight into all states of the global stress effect (i.e., disruption of homoeostasis, stress signalling, recovery and maintenance of homoeostasis) without broad previous knowledge on the system (Villate et al, 2021). The few studies addressing metabolic stress responses in the context of naturalvariation have mainly focussed on herbivory or other individual stressors (Jandová et al, 2015;Calf et al, 2018;Schrieber et al, 2018Schrieber et al, , 2019Buckley et al, 2019;López-Goldar et al, 2019). The necessity of further extending these integrative approaches to stress combinations for satisfying the complexity of natural environments and the changes they face is obvious.…”

Section: Introductionmentioning

confidence: 99%

A metabolomic view on local climate adaptation: Latitudinal divergence of heat and drought responses in a coastal plant

Schrieber

Gluesing

Peters

et al. 2022

Preprint

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Studying natural variation in multi-stress resistance is central for predicting and managing the population dynamics of wild plant species under rapid global change. Yet, it remains a challenging goal in this field to integrate knowledge on the complex biochemical underpinnings for the targeted non-model species. Here, we studied latitudinal divergence in combined drought and heat stress resistance in European populations of the dune plant Cakile maritima, by combining comprehensive plant phenotyping with metabolic profiling via FT-ICR-MS and UPLC-TQ-MS/MS. We observed pronounced constitutive divergence in growth phenology, leaf functional traits and defence chemistry (glucosinolates, alkaloids) among population origins. Most importantly, the magnitude of growth reduction under stress was partly weaker in southern plants and associated with divergence in plastic growth responses (root expansion, leaf abscission) and the stress-induced modulation of primary and specialized metabolites with known central functions not only in plant abiotic but also biotic stress resistance. Our study supports that divergent selection has shaped the constitutive and stress-induced expression of numerous morphological and biochemical functional traits to mediate higher abiotic stress resistance in southern Cakile populations, and highlights that metabolomics is a powerful tool to explore the mechanistic underpinnings of local stress adaptation in non-model species.

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Elevational differentiation in metabolic cold stress responses of an endemic mountain tree

Cited by 16 publications

References 61 publications

Trait divergence and trade-offs among Brassicaceae species differing in elevational distribution

Trait divergence and trade-offs among Brassicaceae species differing in elevational distribution

Are populations of Polylepis australis locally adapted along their elevation gradient?

A metabolomic view on local climate adaptation: Latitudinal divergence of heat and drought responses in a coastal plant

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