Salinity tolerance in barley during germination—homologs and potential genes

Journal of Zhejiang University SCIENCE B, Journal Year: 2020, Volume and Issue: 21(2), P. 93 - 121

Published: Feb. 1, 2020

Language: Английский

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Effects of warming temperatures on germination responses and trade‐offs between seed traits in an alpine plant

Journal of Ecology, Journal Year: 2022, Volume and Issue: 111(1), P. 62 - 76

Published: Oct. 12, 2022

Abstract Climate warming may affect multiple aspects of plant life history, including important factors such as germination responses and the key trade‐off between offspring size number. As a case study to address these concepts, we used an alpine (waxy bluebell, Wahlenbergia ceracea ; Campanulaceae) that shows plasticity in seed traits which dormancy status regulates germination. We chose species because environments are ecosystems particularly under threat by climate change. conducted assays cool warm temperatures using seeds produced individuals were grown historical (cooler) future (warmer) temperature scenarios. assessed presence versus number trade‐off, then examined effects on percentage, fractions dormant viable seeds, velocity. Further, whether during parental growth affected relationships. found evidence for only temperatures. Indeed, plants fewer smaller there was no trade‐off. However, reductions both did not germination, despite correlations with traits. Warming increased larger but overall, it resulted more than fourfold fitness. Synthesis . Our importance conditions when evaluating Stressful conditions, warmer temperatures, can restrain ability reach optimal investment reproduction, masking By analysing across whole cycle, show here overall detrimental effect warming, highlighting potential risk change , and, potentially, communities widely.

Language: Английский

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Trade-offs between seed and leaf size (seed–phytomer–leaf theory): functional glue linking regenerative with life history strategies … and taxonomy with ecology?

Annals of Botany, Journal Year: 2017, Volume and Issue: 120(5), P. 633 - 652

Published: June 6, 2017

Background and Aims While the 'worldwide leaf economics spectrum' (Wright IJ, Reich PB, Westoby M, et al. 2004. The worldwide spectrum. Nature428: 821–827) defines mineral nutrient relationships in plants, no unifying functional consensus links size attributes. Here, focus is upon size, a much-studied plant trait that scales positively with habitat quality components of size. objective to show this wide range explicable terms seed–phytomer–leaf (SPL) theoretical model defining trade-offs involving growth rate number building blocks (phytomers) which young shoot constructed. Methods Functional data for 2400+ species English Spanish vegetation surveys were used explore interrelationships between area, width, canopy height, seed mass dry matter content (LDMC). Key Results Leaf area was consistent function LDMC mass. Additionally, traits are partially uncoupled. First, broad laminas help confer competitive exclusion while morphologically large leaves can, through dissection, be functionally small. Secondly, but many largest-leaved medium height basally supported leaves. Thirdly, photosynthetic stems may represent viable alternative 'small seeds + leaves' disturbed, fertile habitats 'large small infertile ones. Conclusions Although key elements juvenile phase remain unmeasured, our results broadly support SPL theory phytometer product initial meristem (≅ mass) duration growth. These allometrically constrained combine ecological specialization on individual species. Equally, they appear conservatively expressed within major taxa. Thus, 'evolutionary canalization' sensu Stebbins (Stebbins GL. 1974. Flowering plants: evolution above level. Cambridge, MA: Belknap Press) perhaps associated both development, taxa routinely specialized respect ecologically important size-related traits.

Language: Английский

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The risk-takers and -avoiders: germination sensitivity to water stress in an arid zone with unpredictable rainfall

AoB Plants, Journal Year: 2019, Volume and Issue: 11(6)

Published: Oct. 3, 2019

Abstract Water availability is a critical driver of population dynamics in arid zones, and plant recruitment typically episodic response to rainfall. Understanding species’ germination thresholds key for conservation restoration initiatives. Thus, we investigated the role water traits keystone species an ecosystem with stochastic We measured seed responses five species, along gradients temperature potential under controlled laboratory conditions. then identified cardinal temperatures base potentials germination, applied hydrotime model assess stress. Optimum ranged from 15 31 °C saturated conditions (0 MPa), three had low minimum (<3 °C). A small proportion seeds all germinated dry (Ψ ≤ −1 although b50) −0.61 −0.79 MPa. Species adhered one two traits: (i) risk-takers which require less moisture can germinate over wider range irrespective (Casuarina pauper Maireana pyramidata), (ii) risk-avoiders have greater requirements, preference cold climate narrower ranges when (Atriplex rhagodioides, sedifolia Hakea leucoptera). High longevity physiological stress H. leucoptera, combined risk-avoiding strategy, allows bet-hedging. The predicted lower than observed by data, further supporting our assertion that these particular adaptations avoid during drought. This study provides insights into complex environmental stress, relates community zones.

Language: Английский

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Drivers of phenological transitions in the seedling life stage

Functional Ecology, Journal Year: 2025, Volume and Issue: unknown

Published: Feb. 12, 2025

Abstract Plant functional ecology research has primarily focused on juvenile and adult plants even though regeneration from seed can be the most consequential life‐history bottleneck with cascading influence later stages of growth reproduction. Understandings relationships among phenology, morphology growth‐related traits have improved our knowledge plant strategies adaptive responses to changing climate. However, whether phenological morpho‐physiological exist during is unknown. We also lack understanding relative importance these compared those phenology other factors like phylogeny, geographic location a species native or non‐native location. To better understand gaps in knowledge, we evaluated three (days germination, first third true leaves) six (seed mass, rate, root elongation root: shoot ratio, specific leaf area seedling C:N) associated for 131 forb globally distributed grasslands. Morpho‐physiological showed several significant correlations traits. Boosted regression trees revealed that their predicting varied (34%–51%). Interestingly, was comparable phylogeny (36%–46%). In general, faster phenologies produced seedlings grew faster. The strongest at germination (29%) decreased (8%–15%) stages. Native versus origin had little no impact (0%–2%) phenology. Strong between days indicate signatures local adaptation earliest life Similar trait values forbs imply matching may essential establishment. While associations not been previously recognized, results suggest are complex variable across regeneration. Better variation help capture shifts ongoing climate change used develop novel approaches seed‐based restoration. Read free Plain Language Summary this article Journal blog.

Language: Английский

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Seed and seedling traits suggest ontogenetic coordination in the functional recruitment niche for dryland restoration species

Journal of Ecology, Journal Year: 2025, Volume and Issue: unknown

Published: March 11, 2025

Abstract Plant recruitment is shaped by functioning across seed and seedling stages. Because morphology germination directly influence exposure to resources environment, these two stages may be linked through trait synergies trade‐offs that coordinate early ontogeny. However, the wide range of traits impacting environmental response at each ontogenetic stage are rarely explored in tandem understand potential dimensionality functional niche. We covariation among 13 stress tolerance, rate or growth, light response, temperature other functions for 49 species found semi‐arid rangelands. Using phylogenetically informed ordination cluster analysis, we asked how multiple shapes The first dimensions identified separate aligned, providing some basis coordination during recruitment. Morphological reflecting size‐related tolerance (i.e. mass) formed strongest foundation stages, sharing ties with (specific leaf area), growth (root elongation) (e.g. minimum temperature). also observed an unexpected trade‐off seeds seedlings avoid risk (through dormancy) tolerate root investment), respectively. In contrast, thresholds were not tightly analogous Their independence could expand niche depending on significance field. Synthesis . Seed characterized multiple, independent functioning, but moderate increasing as a wider breadth together. At same time, physiological appear less connected complexify spatiotemporal dynamics. Both coordinated aspects here deserve exploration broader species, environments full

Language: Английский

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Floristic Morpho-Ecological Strategies: Methodological Approach to Characterize Robustness of Vegetation

IntechOpen eBooks, Journal Year: 2025, Volume and Issue: unknown

Published: March 19, 2025

Resistance and resilience are usually applied to discuss the functionality of systems, once both describe responses biological units environmental alterations. With this purpose, an analytical methodology focused on description functional vegetation, their potential correlation with matrices, was elaborated in present work. Comparison between amplitudes averages morpho-ecological variables, here analyzed by Fluctuation Asymmetries (FAs), fundament methodology, three different areas Portugal similar extensions from north, center, south (designed as MB, CP, FS). The results obtained described very for these study areas. discussion explained them high resistance areas, lower one (CP), recently exposed intensive forest fires. So, robustness will be sustained relevant resistance, where variability (geomorphology climatology) cause associated. In context, increases production pressions higher frequencies fires climate changes trigger significant vegetation. Changes necessary order maintain

Language: Английский

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Ecological Implications of Germination Temperature on Native and Invasive Rumex Spp.

Plant-Environment Interactions, Journal Year: 2025, Volume and Issue: 6(2)

Published: March 27, 2025

ABSTRACT Rumex alpinus L. ( R. ) is a non‐native invasive plant in Czech mountain regions, altering ecosystem structure and function protected areas. obtusifolius native species problematic weed meadows, while longifolius DC. characteristic of Fennoscandia widespread northern central Europe. This study explores temperature‐driven germination patterns , also focuses on potential differences across populations . The hypothesis suggests that not established lowland areas due to temperature limitations during germination. A second experiment evaluates the influence localities seed primary was conducted at 6°C, 12°C, 18°C, 24°C, 29°C, 35°C climate chamber, performed 24°C for 14 days. Contrary expectations, exhibited highest rate all temperatures. In experiment, rates varied significantly, with positive correlation between success transition from Alpine localities. fastest observed seeds Krkonoše Mountains, where an species.

Language: Английский

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Assessing the importance of cold-stratification for seed germination in alpine plant species of the High-Andes of central Chile

Perspectives in Plant Ecology Evolution and Systematics, Journal Year: 2017, Volume and Issue: 30, P. 125 - 131

Published: Oct. 28, 2017

Language: Английский

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SeedArc, a global archive of primary seed germination data

New Phytologist, Journal Year: 2023, Volume and Issue: 240(2), P. 466 - 470

Published: Aug. 2, 2023

Biology is elucidating global patterns and processes at a rapid pace, as international initiatives mobilize an ever-expanding amount of data on the environment (Karger et al., 2017; Lembrechts 2020), species occurrences (GBIF, 2023), community composition (Sabatini 2021), phylogenomics (Smith 2020) functional traits (Kattge 2020). Data synthesis modern comparative methods (Garamszegi, 2014) are shedding light origin distribution present-day biodiversity, including underlying trait evolution adaptation (Sauquet & Magallón, 2018). In plant science, trait-based macroecology exploring how communities respond to affect ecosystem functions (Wright 2004; Chave 2009; Mommer Weemstra, 2012; Bruelheide Together with height seed mass, leaf–wood–root helping describe spectrum form function (Díaz 2016; Carmona 2021). contrast growing understanding vegetative functions, our knowledge seed-based regeneration less profound, except for related mass (Jiménez-Alfaro Larson Funk, 2016). The phase plays crucial role in life cycle, effects turnover, assembly conservation (Grubb, 1977). niche reflects multifactorial interactions between seeds or seedlings their environment, dispersal, persistence, germination seedling establishment (Poschlod 2013). Unfortunately, little progress has been made synthesizing This especially evident case germination. Accurately describing requires integrating ample range metrics reflecting different drivers physiological – from proportions, most available TRY calculations speed synchrony (Lozano-Isla 2019) more complex models such hydrothermal thresholds (Dürr 2015). As wider response synthesized, it will be possible explore full strategies that exist among populations species. Seed process regulated by integrated responses multiple environmental cues (Donohue 2010). Among these cues, important water (Rosbakh 2019), temperature (Fernández-Pascual diurnal fluctuations (Thompson 1977), (Carta 2017) dormancy regulators (Finch-Savage Leubner-Metzger, 2006; Baskin Baskin, 2014). combination trade-offs across what we define (Saatkamp 2019; Fernández-Pascual Despite extensive research ecology last decades, there exploration integrates other adult spectra 2019). Global-scale studies needed clarify shaping past future diversity. theory laid out decades work (Baskin 2014), but empirical testing major ecological hypotheses both local scales remain elusive without standardized database. recently recognized need synthesize knowledge, setting agenda These efforts have led creation several tools like biome- family-specific databases (Fernández-Pascual, 2021; Ordóñez-Parra 2023); updated list types 2020); R packages analyse González-Rodríguez, parallel, macroecological starting frequent (Sentinella 2020; Carta 2022). advances, current biased specific floras habitats mid-latitude temperate biomes, exception Brazil (Ordóñez-Parra 2023). Large amounts Earth's biodiversity hotspots unexplored global-scale analyses, tropical areas continents Africa parts Asia (Hughes Visscher Archiving biomes allow us overcome issues limiting as: interspecific variation responses; heterogeneity approaches measure appropriate statistical model contexts. Centralizing also confront new challenges nature data: records often track proportions continuous experimental procedures may include single interacting require application analyses derive indices proxy To advance spectrum, launching SeedArc, archive primary (Fig. 1). SeedArc compiles scale. We raw information generated under controlled laboratory conditions experiment conducted lot (i.e. collection obtained geo-referenced population date; Collecting opposed derived traits, 2015; Lozano-Isla users extract (and comparable) each experiment, conduct broad database tailored questions Importantly, association unique events researchers intraspecific variability germination, well produced settings. includes published unpublished repository collecting archiving currently notebooks, regional seedbank databases, scattered scientific articles languages technical reports. By submitting contributors ensure acknowledged accessible usable studies. vision, ultimate result easily accessible, interactive, updatable wide ecosystems, lineages. first round mobilization, focus collected wild non-cultivated plants. overarching goal various levels biological organization. adopts theoretical background seed-trait offering step towards eventually linked Sabatini its associated metadata answer seeds, evolution, biogeography vegetation ecology. Moreover, ongoing habitat degradation climate emergency, support projects biology restoration rely successful (Kildisheva aim create largest globally. fair protocol acquisition use, prepared set data-management rules website (https://www.unioviedo.es/seedarc). version (1.2) was approved coordination team March 2023. developing transparent system contribution use describing: objectives database; renew it; contributors; terms ownership, co-authorship, highlighting retain ownership right collaborate research; validity update them. practice, projects. Individual using start upon request one member contributors. essential workflow data, publications follows: submitted (= data) property managed team; access usage done through projects; project must publish, open access, all used secondary data). words, end up being once they presented publication. leaders follow ethical publishing obliged produce science research. enables macroevolutionary It captures optimal suboptimal species, accounts key aspect phenotypic evolutionary context (Violle Silvestro Research opportunities within initiative organized address questions; any contributor able propose lead following procedure outlined rules. invite scientists join contributing over world, regardless type number tested. offer co-authorship collaboration attribution scheme. preserved reused. Updated about instructions can found https://www.unioviedo.es/seedarc. supported Jardín Botánico Atlántico de Gijón/Xixón, SV-20-GIJON-JBA. EOARC jointly funded USDA-ARS Oregon State Agricultural Experiment Station. University equal-opportunity providers employers. Mention proprietary product does not constitute guarantee warranty USDA-ARS, University, authors imply approval exclusion products. None declared. EFP BJ-A conceived idea. EFP, BJ-A, AC SR drafted rules, goals structure AC, SR, LG, SSP, FAOS, SCC, JEL contributed revised manuscript writing, contributions BJ-A. code this article https://github.com/efernandezpascual/seedarcms. A record deposited Zenodo doi:10.5281/zenodo.8114443.

Language: Английский

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