Integrating Multiple Lines of Evidence to Explore Intraspecific Variability in a Rare Endemic Alpine Plant and Implications for Its Conservation

Adamo, Martino; Mammola, Stefano; Noble, Virgile; Mucciarelli, Marco

doi:10.3390/plants9091160

Cited by 4 publications

(2 citation statements)

References 71 publications

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“…Esto es de nuevo coherente con el flujo genético detectado entre poblaciones a diferentes elevaciones (Morente-López et al 2018). En otras especies de montaña, los resultados del análisis de la estructura genética en un contexto de centro-periferia han mostrado una gran contexto-dependencia (Yang et al 2016;Meng et al 2019;Tóth et al 2019;Adamo et al 2020).…”

Section: Determinación Del Efecto De Las Presiones Selectivas Sobre Poblaciones Marginalesunclassified

Áreas marginales en ecosistemas alpinos: definición y valor evolutivo en un contexto de cambio climático

Morente

Lara‐Romero

Fernández

et al. 2021

ECOS

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En el contexto de cambio climático en el que nos encontramos, cada vez más poblaciones se ven sometidas a presiones selectivas extremas definitorias de una marginalidad ambiental. Determinar el valor evolutivo y el potencial adaptativo de las poblaciones marginales sigue siendo un reto de enorme importancia actualmente y tiene implicaciones directas sobre la conservación de la biodiversidad. Para afrontar este reto conviene considerar de manera integradora los principales factores que influyen en los procesos de adaptación evolutiva (diversidad genética, presiones selectivas y flujo genético). En este trabajo presentamos una hoja de ruta que parte de la definición del concepto de marginalidad ambiental a la integración de experimentos de campo y laboratorio, incluyendo la utilización de modelos de nicho ecológico, estudios genéticos y genómicos, experimentos de jardín común in situ y ex situ, simulaciones de flujo genético y siembras recíprocas, con el fin de determinar el potencial evolutivo que reside en poblaciones que habitan áreas ambientalmente marginales y, por tanto, también su valor de conservación. Para ello utilizamos como caso de estudio la investigación llevada a cabo con Silene ciliata en las poblaciones del Sistema Central. Nuestros estudios indican que algunas de las poblaciones que habitan en áreas marginales mantienen niveles considerables de diversidad genética y presentan claras evidencias de adaptación local. En consecuencia, estos resultados destacan el relevante valor de conservación que pueden tener las poblaciones marginales, especialmente en un contexto de cambio climático.

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Section: Determinación Del Efecto De Las Presiones Selectivas Sobre Poblaciones Marginalesunclassified

Áreas marginales en ecosistemas alpinos: definición y valor evolutivo en un contexto de cambio climático

Morente

Lara‐Romero

Fernández

et al. 2021

ECOS

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“…Across the distribution region of a species, geographical distances (barriers) cause population differentiation through limited gene flow between populations. Researchers have found significant correlations between population trait differentiation and geographical distances in natural habitats or common gardens (Adamo et al, 2020 ; Baruch et al, 2018 ). On the contrary, due to habitat fragmentation and rapid climate change, the contributions of climatic difference to population trait differentiation are lower than expected when considering multiple traits simultaneously (Jump & Peñuelas, 2005 ; Wright et al, 2005 ).…”

Section: Introductionmentioning

confidence: 99%

Intraspecific trait variation and adaptability of Stipa krylovii: Insight from a common garden experiment with two soil moisture treatments

Liu,

Fan,

Gong

et al. 2023

Ecology and Evolution

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Understanding patterns of intraspecific trait variation can help us understand plant adaptability to environmental changes. To explore the underlying adaptation mechanisms of zonal plant species, we selected seven populations of Stipa krylovii, a dominant species in the Inner Mongolia Steppe of China, and evaluated the effects of phenotypic plasticity and genetic differentiation, the effects of climate variables on population trait differentiation, and traits coordinated patterns under each soil moisture treatment. We selected seeds from seven populations of S. krylovii in the Inner Mongolia Steppe, China, and carried out a soil moisture (2) × population origin (7) common garden experiment at Tianjin City, China, and measured ten plant traits of S. krylovii. General linear analyses were used to analyze how soil moisture and population origin affected each trait variation, Mantel tests were used to analyze population trait differentiation—geographic distance (or climatic difference) relationships, regression analyses were used to evaluate trait‐climatic variable relationships, and plant trait networks (PTNs) were used to evaluate traits coordinated patterns. Both soil moisture and population origin showed significant effects on most of traits. Aboveground biomass, root‐shoot ratio, leaf width, specific leaf area, and leaf nitrogen (N) content were significantly correlated with climate variables under the control condition. Specific leaf area and leaf N content were significantly correlated with climate variables under the drought condition. By PTNs, the hub trait(s) was plant height under the control condition and were aboveground biomass, root length, and specific leaf area under the drought condition. This study indicates that both phenotypic plasticity and genetic differentiation can significantly affect the adaptability of S. krylovii. In addition, soil moisture treatments show significant effects on trait‐climate relationships and traits coordinated patterns. These findings provide new insights into the adaptive mechanisms of zonal species in the semiarid grassland region.

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Molecular evidence and environmental niche evolution at the origin of the disjunct distribution in three mountain endemic Tephroseris (Asteraceae) of the Mediterranean basin

Adamo,

Skokanová,

Bobo-Pinilla

et al. 2023

Alp Botany

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Studies on the origin and evolutionary history of closely related plants help to understand patterns of diversity of the mountain flora in addition to providing the basis for their identification. The genus Tephroseris includes three endemic taxa with small and disjoint distributions in the high mountains of the Iberian Peninsula and on the Maritime Alps. Tephroseris balbisiana is native to the Southwestern Alps, Tephroseris elodes to Sierra Nevada, and Tephroseris coincyi to Sierra de Gredos. These taxa have been treated under different combinations of species or subspecies due to limited morphological differentiation, but comprehensive studies have not been published so far. By combining information from phylogeny, molecular dating and genome size, we demonstrated the taxonomic distinctiveness between T. balbisiana and the two Iberian taxa. Although the lack of variability in plastid DNA hampered the precise estimation of the diversification events, some of the recovered patterns suggested a recent divergence of T. balbisiana, T. elodes and T. coincyi dating back to the Pleistocene (0.5–2.8 Mya). However, niche modeling supported a geographical overlap between the three taxa during the Last Glacial Maximum (LGM). Moreover, the fragmentation of their ancient larger distribution range, particularly in the lower elevations of the Iberian Peninsula, and migration to glacial refuges in the south-western Alps, provide the most plausible explanations for the current disjoint distribution within the Mediterranean mountains. Furthermore, based on the evidence we gathered, we inferred that the alpine T. balbisiana, as well as the Iberian taxa, should be considered as three distinct subspecies.

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Integrating Multiple Lines of Evidence to Explore Intraspecific Variability in a Rare Endemic Alpine Plant and Implications for Its Conservation

Cited by 4 publications

References 71 publications

Áreas marginales en ecosistemas alpinos: definición y valor evolutivo en un contexto de cambio climático

Áreas marginales en ecosistemas alpinos: definición y valor evolutivo en un contexto de cambio climático

Intraspecific trait variation and adaptability of Stipa krylovii: Insight from a common garden experiment with two soil moisture treatments

Molecular evidence and environmental niche evolution at the origin of the disjunct distribution in three mountain endemic Tephroseris (Asteraceae) of the Mediterranean basin

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