Assessing local adaptation vs. plasticity under different resource conditions in seedlings of a dominant boreal tree species

Sniderhan, Anastasia E.; McNickle, Gordon G.; Baltzer, Jennifer L.

doi:10.1093/aobpla/ply004

Cited by 12 publications

(6 citation statements)

References 45 publications

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“…We also found that plants from southern British Columbia had higher shoot biomass in the presence of competition than those from the colder northern British Columbia. Seeds from warmer locations are likely adapted to higher temperatures and longer growing seasons (Sniderhan et al., 2018 ). This should allow these plants grow more quickly under high‐resource conditions, compared to plants obtained from colder locations, which conserve resources to survive extreme conditions (D'Hertefeldt et al., 2014 ; Sniderhan et al., 2018 ).…”

Section: Discussionmentioning

confidence: 99%

“…Seeds from warmer locations are likely adapted to higher temperatures and longer growing seasons (Sniderhan et al., 2018 ). This should allow these plants grow more quickly under high‐resource conditions, compared to plants obtained from colder locations, which conserve resources to survive extreme conditions (D'Hertefeldt et al., 2014 ; Sniderhan et al., 2018 ). This result also suggests that phenotypic plasticity for shoot biomass in response to temperature may be present in Pseudoroegneria spicata , although biotic conditions may influence plastic responses.…”

Section: Discussionmentioning

confidence: 99%

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Plant provenance can influence the impacts of temperature and moisture on intraspecific competition in Pseudoroegneria spicata

Donnelly,

Akin‐Fajiye,

Fraser

2023

Ecology and Evolution

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Warming and changing precipitation can alter the performance of native grasses that are essential to grassland ecosystems. Native grasses may respond to changing climate by phenotypic plasticity or lose their current ranges. Establishing plant species from southern, warmer provenances may reduce the likelihood of biodiversity loss and improve restoration success in cool, northern locations that are undergoing warming. We conducted competition trials for Pseudoroegneria spicata (bluebunch wheatgrass), a native grass commonly found in western North American grasslands, to understand the impact of temperature and moisture on plant–plant interactions. We obtained seeds from three locations along a latitudinal gradient in North America, two in British Columbia (BC), Canada, and one in California, USA. We compared the effects of warming, changing water inputs, and competitor provenance on pairwise competitive interactions among Pseudoroegneria spicata plants grown from seeds obtained from the three locations. We quantified interactions using the relative interaction intensity, which has values from −1 (complete competition) to +1 (complete facilitation). Target plants from northern British Columbia, the location with the coldest summer temperature, were generally more competitively suppressed when competing with plants from California, which had the warmest summer temperature and lowest summer precipitation. Competitive suppression of target plants from northern British Columbia and southern British Columbia was more intense when competitor provenance was more geographically distant from target plant provenance. Finally, plants from northern British Columbia and southern British Columbia were more suppressed at higher temperatures, indicating some local adaptation, while plants from California were not affected by competitors, temperature, or water input. Plants grown from seeds obtained from warm and dry locations appear to be more tolerant to competition at higher temperatures, compared to plants from cooler regions. Native plant diversity and restoration success in grasslands subjected to climate change may be preserved or improved by assisted migration of seeds from warm to cooler but warming locations.

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Section: Discussionmentioning

confidence: 99%

Section: Discussionmentioning

confidence: 99%

Plant provenance can influence the impacts of temperature and moisture on intraspecific competition in Pseudoroegneria spicata

Donnelly,

Akin‐Fajiye,

Fraser

2023

Ecology and Evolution

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“…Under both controlled and natural conditions, a little variability has been observed in the xylem-related traits in black spruce wood. Relative to other species, black spruce adopts a very conservative growth strategy, resulting in an unexpected inertia in wood anatomy vis-a-vis induced or natural environmental change (Belien et al, 2012;Balducci et al, 2016;Sniderhan et al, 2018). Chen et al (2019) observed a reduced responsiveness by black spruce to variations in environmental factors.…”

Section: High Plasticity In Wood Formation Dynamics Modulates Wood Trmentioning

confidence: 99%

Environmental and developmental factors driving xylem anatomy and micro‐density in black spruce

et al. 2021

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Wood density is the product of carbon allocation for structural growth and reflects the trade-off between mechanical support and water conductivity. We tested a conceptual framework based on the assumption that micro-density depends on direct and indirect relationships with endogenous and exogenous factors. The dynamics of wood formation, including timings and rates of cell division, cell enlargement, and secondary wall deposition, were assessed from microcores collected weekly between 2002 and 2016 from five black spruce stands located along a latitudinal gradient in Quebec, Canada. Cell anatomy and micro-density were recorded by anatomical analyses and X-ray measurements. Our structural equation model explained 80% of micro-density variation within the treering with direct effects of wall thickness (r = 0.61), cell diameter (r = À0.51), and photoperiod (r = À0.26). Wood formation dynamics had an indirect effect on micro-density. Micro-density increased under longer periods of cell-wall deposition and shorter durations of enlargement. Our results fill a critical gap in understanding the relationships underlying micro-density variation in conifers. We demonstrated that short-term responses to environmental variations could be overridden by plastic responses that modulate cell differentiation. Our results point to wood formation dynamics as a reliable predictor of carbon allocation in trees.

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“…Rising CO 2 concentrations are assumed to strongly affect plant growth with significant consequences for ecosystem functioning and agricultural production (Böhnisch et al 2021;Kaur et al 2016). Knowledge about the adaptive capacity of plants to changing CO 2 concentrations is therefore imperative to assess and predict ecosystem responses that happened in prehistory and will happen in future (Sniderhan et al 2018).…”

Section: Introductionmentioning

confidence: 99%

Strong links between photosynthetic efficiency and the diversification of C3 plants during the last 120 million years

Schweiger,

Schweiger

2024

Preprint

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Changing CO concentrations have and will continue to affect plant growth with consequences for ecosystem functioning. The adaptive capacity of C photosynthesis to changes in atmospheric CO concentrations is, however, insufficiently investigated so far. Here we focused on the phylogenetic dynamics of maximum carboxylation rate (V) and maximum electron transport rate (J) – two key determinants of photosynthetic efficiency in C plants – and their relation to deep-time dynamics in species diversification, speciation and atmospheric CO concentrations during the last 120 million years. We observed very strong positive relationships between photosynthetic efficiency and species diversification as well as speciation rates. V as well as species speciation and diversification furthermore increased during periods of low prehistoric CO concentrations. From our results we conclude strong links between photosynthetic efficiency and evolutionary dynamics in C plants. We furthermore conclude, that increasing future CO concentrations might rather hinder than facilitate evolutionary dynamics in C plants.

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Assessing local adaptation vs. plasticity under different resource conditions in seedlings of a dominant boreal tree species

Cited by 12 publications

References 45 publications

Plant provenance can influence the impacts of temperature and moisture on intraspecific competition in Pseudoroegneria spicata

Plant provenance can influence the impacts of temperature and moisture on intraspecific competition in Pseudoroegneria spicata

Environmental and developmental factors driving xylem anatomy and micro‐density in black spruce

Strong links between photosynthetic efficiency and the diversification of C3 plants during the last 120 million years

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