Climate and plant traits alter the relationship between seed dispersal and seed dormancy in alpine environment

Environmental and Experimental Botany, Journal Year: 2024, Volume and Issue: 219, P. 105660 - 105660

Published: Jan. 21, 2024

Language: Английский

---

Drivers of phenological changes in southern Europe

International Journal of Biometeorology, Journal Year: 2022, Volume and Issue: 66(9), P. 1903 - 1914

Published: July 26, 2022

The life cycle of plants is largely determined by climate, which renders phenological responses to climate change a highly suitable bioindicator change. Yet, it remains unclear, are the key drivers patterns at certain stages. Furthermore, varying species belonging different plant functional types not fully understood. In this study, role temperature and precipitation as environmental changes in southern Europe assessed. trends phenophases leaf unfolding, flowering, fruiting, senescence quantified, corresponding main identified. A clear trend towards an earlier onset fruiting detected, while there no pattern for senescence. general, advancement flowering smaller deciduous broadleaf trees comparison shrubs crops. Many photoperiod-sensitive; therefore, their comparatively small advancements likely effect photoperiod counterbalancing impact increasing temperatures. While identified driver changes, also plays crucial determining unfolding flowering. Phenological phases advance under dry conditions, can be linked lack transpirational cooling leading rising temperatures, subsequently accelerate growth.

Language: Английский

---

Genomics empowering conservation action and improvement of celery in the face of climate change

Planta, Journal Year: 2024, Volume and Issue: 259(2)

Published: Jan. 25, 2024

Language: Английский

---

The dimorphic diaspore model Aethionema arabicum (Brassicaceae): Distinct molecular and morphological control of responses to parental and germination temperatures

The Plant Cell, Journal Year: 2024, Volume and Issue: 36(7), P. 2465 - 2490

Published: March 21, 2024

Plants in habitats with unpredictable conditions often have diversified bet-hedging strategies that ensure fitness over a wider range of variable environmental factors. A striking example is the diaspore (seed and fruit) heteromorphism evolved to maximize species survival Aethionema arabicum (Brassicaceae) which external endogenous triggers allow production two distinct diaspores on same plant. Using this dimorphic model, we identified contrasting molecular, biophysical, ecophysiological mechanisms germination responses different temperatures mucilaginous seeds (M+ seed morphs), dispersed indehiscent fruits (IND fruit bare non-mucilaginous M- obtained by pericarp (fruit coat) removal from IND fruits. Large-scale comparative transcriptome hormone analyses M+ seeds, fruits, provided comprehensive datasets for their thermal responses. Morph-specific differences co-expressed gene modules as well contents, role imposing coat dormancy generating hypoxia affecting abscisic acid (ABA) sensitivity. This involved expression morph-specific transcription factors, response, cell wall remodeling genes, altered ABA metabolism, transport, signaling. Parental temperature affected contents ABA-related biomechanical properties. Elucidating molecular framework underlying can provide insight into developmental globally changing temperatures.

Language: Английский

---

A time-to-event analysis for temperature dependence of seed germination in four conifers: Ecological niche and environmental gradients

Forest Ecology and Management, Journal Year: 2024, Volume and Issue: 562, P. 121972 - 121972

Published: May 11, 2024

Language: Английский

---

Functional intraspecific variation in the base water potential for seed germination along soil microclimatic gradients

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

Published: Jan. 30, 2025

Abstract The ability of plants to successfully regenerate depends on complex physiological and ecological processes, one the first vital stages is seed germination, which temperature, light water availability. Within species variation in germination allows differential responses when facing stimuli key for adaptation natural world. There has been abundant research about temperature changes, but much less known availability, specifically limits potential within a single wild species. Under ongoing climate change with increasing drought episodes it know minimum amount required as well if therefore adapt exists We focused carnation ( Dianthus langeanus ) endemic northwestern Iberian Peninsula. collected seeds from 18 different subpopulations, some only 10 m apart, contrasting microclimatic conditions due topography, slope orientation. measured stress using polyethylene glycol (PEG) solutions, polymer that increases density mimic intensities. found considerable differences under between each subpopulation. Seeds warmer drier subpopulations were able germinate higher stress, meaning their was more tolerant. Our results highlight importance Variation appears be important even at small scales, suggesting an previously unknown future conditions. Read free Plain Language Summary this article Journal blog.

Language: Английский

---

Using the optimal seed germination temperature approach to determine the potential distribution of Inga jinicuil in Mexico under climate change scenarios

Scientific Reports, Journal Year: 2025, Volume and Issue: 15(1)

Published: Jan. 31, 2025

Language: Английский

---

Multilevel ecological interactions: Impact of weather, forest extreme events and seed production on squirrel population dynamics

The Science of The Total Environment, Journal Year: 2025, Volume and Issue: 966, P. 178713 - 178713

Published: Feb. 1, 2025

Language: Английский

---

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

---

Molecular mechanisms and hormonal regulation underpinning morphological dormancy: a case study using Apium graveolens (Apiaceae)

The Plant Journal, Journal Year: 2021, Volume and Issue: 108(4), P. 1020 - 1036

Published: Sept. 12, 2021

Underdeveloped (small) embryos embedded in abundant endosperm tissue, and thus having morphological dormancy (MD) or morphophysiological (MPD), are considered to be the ancestral state seed evolution. This trait is retained Apiaceae family, which provides excellent model systems for investigating underpinning mechanisms. We investigated Apium graveolens (celery) MD by combined innovative imaging embryo growth assays with quantification of hormone metabolism, as well analysis cell-wall related gene expression. The integrated experimental results demonstrated that occurred inside imbibed celery fruits association degradation, a critical size was required radicle emergence. regulation these processes depends on expression leading gibberellin indole-3-acetic acid (IAA) production crosstalk between fruit compartments. ABA degradation associated distinct spatiotemporal patterns sensitivity control growth, breakdown complex interaction gibberellins, IAA changes tissue-specific sensitivities hormones from non-MD seeds. conclude reach constitute unique germination programme.

Language: Английский

---