Experimental warming altered plant functional traits and their coordination in a permafrost ecosystem

New Phytologist, Journal Year: 2023, Volume and Issue: 240(5), P. 1802 - 1816

Published: July 11, 2023

Knowledge about changes in plant functional traits is valuable for the mechanistic understanding of warming effects on ecosystem functions. However, observations have tended to focus aboveground traits, and there little information belowground or coordination above- under climate warming, particularly permafrost ecosystems. Based a 7-yr field experiment, we measured 26 four dominant species, explored community composition trait networks response experimental Tibetan Plateau. Experimental shifted community-level toward more acquisitive values, with earlier green-up, greater height, larger leaves, higher photosynthetic resource-use efficiency, thinner roots, specific root length nutrient concentrations. had negligible effect terms diversity. In addition, hub which highest centrality network from area leaf area. These results demonstrate that exhibit consistent adaptive strategies, warmer environments. Such could provide an advantage plants environmental change.

Language: Английский

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Are absorptive root traits good predictors of ecosystem functioning? A test in a natural temperate forest

New Phytologist, Journal Year: 2023, Volume and Issue: 239(1), P. 75 - 86

Published: March 29, 2023

Trait-based approaches provide a useful framework to predict ecosystem functions under intensifying global change. However, our current understanding of trait-functioning relationships mainly relies on aboveground traits. Belowground traits (e.g. absorptive root traits) are rarely studied although these related important plant functions. We analyzed four pairs analogous leaf and woody plants in temperate forest examined how coordinated at the community-level, what extent trait covariation depends local-scale environmental conditions. then quantified contributions conditions determining two functions, carbon storage, biomass productivity. The results showed that both morphological chemical exhibited positive correlations community level. Absorptive show strong response compared also found were better predictors than Our study confirms role belowground modulating deepens responses changing

Language: Английский

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Root traits vary as much as leaf traits and have consistent phenotypic plasticity among 14 populations of a globally widespread herb

Functional Ecology, Journal Year: 2024, Volume and Issue: 38(4), P. 926 - 941

Published: Feb. 7, 2024

Abstract Our understanding of plant functional trait variation among populations and how this relates to local adaptation environmental conditions is largely shaped by above‐ground traits. However, we might expect below‐ground traits linked resource acquisition conservation vary that experience different conditions. Alternatively, be highly plastic in response growing conditions, such as availability soil resources association with symbiont arbuscular mycorrhizal fungi (AMF). We assessed (i) the strength among‐population above‐ traits, (ii) effects on (iii) whether source environment a globally distributed perennial Plantago lanceolata . Using seeds from 14 across three continents, grew plants common garden experiment measured leaf root water conservation. included two sets experimental treatments (high or low availability; without AMF inoculation), which enabled us assess responses Across treatments, percentage explained continents was 9%–26%, compared 7%–20% for variation. From principal component analysis (PCA), first PC axis both reflected size, while second broadly captured mass allocation. Root allocation (PC 2) related mean annual temperature moisture index, indicating cooler, wetter environments had longer, thinner roots. found little support relationship between PCs, system size (PC1) individual Water inoculation were consistent populations, larger under inoculation, less leaves lower availability. shows substantial population‐level suite but only partially variables studied. Despite considerable differences abiotic environments, geographically separated have retained strong similar capacity phenotypic plasticity above below‐ground. Read free Plain Language Summary article Journal blog.

Language: Английский

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Soil microenvironmental variation drives below‐ground trait variation and interacts with macroclimate to structure above‐ground trait variation of arctic shrubs

Journal of Ecology, Journal Year: 2024, Volume and Issue: 112(4), P. 901 - 916

Published: Feb. 19, 2024

Abstract Intraspecific trait variation can influence plant performance in different environments and may thereby determine the ability of individual plants to respond climate change. However, our understanding its patterns environmental drivers across spatial scales is incomplete, especially understudied regions like Arctic. To fill this knowledge gap, we examined above‐ground below‐ground traits from three shrub taxa expanding tundra biome evaluated their relationships with multiple microenvironmental macroclimatic factors. The reflected size structure (plant height, leaf area root shoot ratio), economics (specific area, nitrogen content), collaboration mycorrhizal fungi length, tissue density, content, ectomycorrhizal colonisation intensity). We also measured δ 15 N 13 C characterise source acquisition pathways water stress. Traits were replicated plots ( = 135) varying soil microclimate, thaw depth organic layer thickness established five sites spanning a macroclimate gradient northern Alaska. This hierarchical design allowed us disentangle independent combined effects fine‐scale broad‐scale factors on intraspecific variation. found substantial at fine for most less along between taxa. Consistent these patterns, factors, mainly moisture depth, interacted macroclimate, climatic deficit, size‐structural In contrast, responded additively macroclimate. Synthesis . Our results demonstrate that differently These differing responses contribute decouple

Language: Английский

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Soil rather than root traits drives variation in the rhizosphere microbial community of Pinus taiwanensis in a subtropical mountain ecosystem

Applied Soil Ecology, Journal Year: 2025, Volume and Issue: 210, P. 106106 - 106106

Published: April 15, 2025

Language: Английский

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Weak phylogenetic and habitat effects on root trait variation of 218 Neotropical tree species

Frontiers in Forests and Global Change, Journal Year: 2023, Volume and Issue: 6

Published: May 26, 2023

Introduction Tropical forests harbor a large diversity of closely related tree species that can thrive across habitats. This biodiversity has been found to correspond functional in aboveground traits, and likely also relates belowground trait variation. Globally, root (co-)variation is driven by different resource strategies species, environmental variation, phylogeny; however, these patterns mostly reflect observations from temperate biomes remain unconfirmed tropical trees. We examine phylogenetic effects on trees habitats an Amazonian rainforest. Methods Roots 218 ten dominant families were sampled three major near Manaus, Brazil. quantified five morphological architectural traits (i) investigate how they reflected (ii) compare them between superorders test effects, (iii) determine expressions variability. Results Root discriminated along tradeoff diameter branching and, secondly, due variation tissue density. Our results further show weak for example, the same superorder showed divergence their while those often overlapped morphology architecture. differed significantly but habitat type had only little effect overall Discussion work suggests dimensions drivers underlie may differ global defined datasets. Due (a)biotic differences, (Neo)tropical forests, we evidence strong conservatism observed biomes. highlight important avenues future research roots order degree of, shifts as communities environments change forests.

Language: Английский

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Elevational trends of root traits for alpine grassland are weakly dependent on grazing-related degradation

Soil and Tillage Research, Journal Year: 2025, Volume and Issue: 252, P. 106596 - 106596

Published: April 18, 2025

Language: Английский

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Using a thermal gradient table to study plant temperature signalling and response across a temperature spectrum

Plant Methods, Journal Year: 2024, Volume and Issue: 20(1)

Published: July 29, 2024

Abstract Plants must cope with ever-changing temperature conditions in their environment. In many plant species, suboptimal high and low temperatures can induce adaptive mechanisms that allow optimal performance. Thermomorphogenesis is the acclimation to ambient temperature, whereas cold refers acquisition of tolerance following a period temperatures. The molecular underlying thermomorphogenesis are increasingly well understood but neither signalling components have an apparent role both warmth, nor factors determining dose-responsiveness, currently defined. This be explained part by practical limitations, as applying gradients requires use multiple growth simultaneously, usually unavailable research laboratories. Here we demonstrate commercially available thermal gradient tables used grow assess plants over defined adjustable steep within one experiment. We describe technical thermodynamic aspects provide considerations for treatment. show display expected morphological, physiological, developmental responses typically associated acclimation. includes dose-response effects on seed germination, hypocotyl elongation, leaf development, hyponasty, rosette growth, marker gene expression, stomatal conductance, chlorophyll content, ion leakage hydrogen peroxide levels. conclusion, table systems enable standardized predictable environments study varying regimes swiftly implemented response.

Language: Английский

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Special Issue: Root traits and functioning: from individual plants to ecosystems

Oikos, Journal Year: 2023, Volume and Issue: 2023(1)

Published: Jan. 1, 2023

There are no additional data for this paper.

Language: Английский

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Intraspecific variation in fine-root traits is larger than in aboveground traits in European herbaceous species regardless of drought

Frontiers in Plant Science, Journal Year: 2024, Volume and Issue: 15

Published: April 9, 2024

Differences within species (Intraspecific trait variation - ITV) contribute substantially to overall variability and environmental harshness can reduce among-species variation. While aboveground traits have received considerable attention, knowledge about ITV in fine-root how it differs from remains limited. This study examined the partitioning of 52 European herbaceous such proportions change response drought, offering valuable insights for accurate functional characterization inter-species comparisons. We studied seven morphological under drought well-watered conditions a greenhouse experiment. Linear mixed effect models permutational multivariate analysis variance (PERMANOVA) were employed decompose variation, ensuring robustness our results. also calculated combination traits, as well pairs analogous leaf (i.e., that fulfill similar functions) each treatment (control drought). Among-species differences explained greater proportion than within-species except root dry matter content (RDMC). Height area stood out, with species' identity accounting 87-90% total Drought had no significant on any traits. However, exhibited higher intraspecific (44-44%) (19-21%) both control. Analogous showed (51-50%) (27-31%). Our findings highlight substantial nuanced responses particularly RDMC, suggesting traits' flexibility soil heterogeneity fosters less differentiation among species. differences, especially aboveground, may underscore distinct strategies competitive abilities resource acquisition utilization. contributes elucidate mechanisms underlying multifunctionality above- belowground plants compartments.

Language: Английский

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