Global vegetation productivity has become less sensitive to drought in the first two decades of the 21st century DOI Creative Commons
Meng Luo,

Shengwei Zhang,

Ruishen Li

et al.

International Journal of Applied Earth Observation and Geoinformation, Journal Year: 2024, Volume and Issue: 135, P. 104297 - 104297

Published: Dec. 1, 2024

Language: Английский

Winter annuals not only escape but also withstand winter droughts: Results from a multi-trait, multi-species approach DOI Creative Commons
Susanne Kurze, Bettina M. J. Engelbrecht, Mark C. Bilton

et al.

Perspectives in Plant Ecology Evolution and Systematics, Journal Year: 2025, Volume and Issue: unknown, P. 125849 - 125849

Published: Feb. 1, 2025

Language: Английский

Citations

0

Growth and survival strategies of oilseed rape (Brassica napus L.) leaves under potassium deficiency stress: trade‐offs in potassium ion distribution between vacuoles and chloroplasts DOI

Hehe Gu,

Zhonghu He, Zhifeng Lu

et al.

The Plant Journal, Journal Year: 2025, Volume and Issue: 121(4)

Published: Feb. 1, 2025

SUMMARY Potassium (K) is a prevalent limiting factor in terrestrial ecosystems, with approximately one‐eighth of the world's soils undergoing K + deficiency stress. Upon encountering stress, leaf area (LA) declines before net photosynthetic rate ( A n ). The sequential alterations fundamentally represent adaptive trade‐off between survival and growth plants subjected to This hypothesized be linked differences subcellular distribution limited resources. Thus, apparent concentration compartments, along LA characteristics rapeseed leaves at various developmental stages supply conditions were quantified elucidate mechanisms by which regulates survival. results revealed that during early deficiency, actively downregulate sustain normal physiological functions. primarily accomplished lowering vacuoles, restricting expansion, enhancing chloroplasts ensure . Prolonged decreased below critical threshold (37.8 m ), disrupting chloroplast structure function, impairing , ultimately threatening rapeseed. Hence, sustaining an adequate within crucial for preserving efficiency ensuring under In conclusion, regulate trade‐offs vacuoles coordinate

Language: Английский

Citations

0

Coinciding spring and autumn frosts have a limited impact on carbon fluxes in a grassland ecosystem DOI Creative Commons

Juanjuan Han,

Chaowei Tan,

Jingyi Ru

et al.

Nature Communications, Journal Year: 2025, Volume and Issue: 16(1)

Published: May 13, 2025

Frosts, increasingly prevalent due to climate warming, can offset the carbon storage benefits of an extended growing season, potentially exacerbating warming. However, existing research primarily focus on species, with limited evidence fluxes at ecosystem scale. Using a manipulative experiment simulating 7-day frosts in temperate grassland, we find that ongoing frosts, whether spring or autumn, have effects gross productivity, respiration, and net productivity during frost measurement periods. profoundly impact over entire season outside Specifically, significantly increase autumn marginal decrease it, combined effect both neutralize productivity. The early-year (2018-2020) impacts may be driven by plant eco-physiological changes, whereas late-year (2021-2023) were attributed shifts community structure. Our findings suggest frequent seasons not stimulate release grasslands. Understanding these patterns is crucial for predicting balance developing effective climate-change mitigation strategies response future warmer climate.

Language: Английский

Citations

0

Tree post‐drought recovery: scenarios, regulatory mechanisms and ways to improve DOI
Ilya E. Zlobin

Biological reviews/Biological reviews of the Cambridge Philosophical Society, Journal Year: 2024, Volume and Issue: 99(5), P. 1595 - 1612

Published: April 5, 2024

Efficient post-drought recovery of growth and assimilation enables a plant to return its undisturbed state functioning. Unlike annual plants, trees suffer not only from the current drought, but also cumulative impacts consecutive water stresses which cause adverse legacy effects on survival performance. This review provides an integrated assessment ecological, physiological molecular evidence photosynthesis in trees, with view informing breeding better ability recover stress. Suppression processes can result stress damage controlled downshift as part tree acclimation water-limited conditions. In latter case, could potentially be activated by turning off controlling mechanisms, several obstacles make this unlikely. Tree phenology, specifically photoperiodic constraints, limit photosynthesis, targeting these constraints may represent promising way breed enhanced post-drought. The mechanisms photoperiod-dependent regulation shoot, secondary root are reviewed. Finally, limitations trade-offs altering discussed.

Language: Английский

Citations

3

Diversity and functional differentiation of renewal buds in temperate herbaceous plants DOI Creative Commons
Renáta Schnablová, Alena Bartušková, Eva Horčičková

et al.

New Phytologist, Journal Year: 2024, Volume and Issue: 244(1), P. 292 - 306

Published: Aug. 12, 2024

Spring regrowth in temperate perennials relies on renewal buds, which form a key component the shoot growth cycle. Still, we possess almost no information these is becoming more pressing with current climate change. Most existing studies concentrated easy-to-study aboveground buds of woody plants, whose morphology has largely been linked to frost protection. It not clear what extent findings apply also herbaceous species. We therefore examined protective traits and preformation winter 379 species herbs, tested how are distributed across phylogeny related other bud bank whole-plant traits. identified major gradient from few, large, highly preformed, scale-covered associated larger belowground storage organs deep soil, small, numerous, less naked near soil surface. Belowground herbs show several distinct strategies for survival spring that might affect their response changing early conditions. Renewal driven only by protection but apical meristem mechanical disturbance soil.

Language: Английский

Citations

3

Within‐leaf variation in embolism resistance is not a rule for compound‐leaved angiosperms DOI Creative Commons
Ian M. Rimer, Scott A. M. McAdam

American Journal of Botany, Journal Year: 2024, Volume and Issue: unknown

Published: Dec. 16, 2024

Abstract Premise Hydraulic segmentation, caused by the difference in embolism resistance across plant organs, provides a sacrificial layer of cheaper like leaves, to protect more costly such as stems, during drought. Within‐leaf hydraulic segmentation has been observed two compound‐leaved tree species, with leaflets being vulnerable than rachis or petiole. Many herbaceous species have compound and some that are associated pulvini at base lamina, which could provide an anatomical means preventing from spreading within leaf because higher number vessel endings pulvinus. Methods We used optical vulnerability method investigate whether differences were tissues six one deciduous leaves. Our selection included both palmately pinnately‐compound leaved each pulvinus leaflets. Results found considerable variation measured, but no evidence leaf. In pulvini, we major events crossing pulvinus, petiole into embolizing same water potential. Conclusions conclude within‐leaf resistance, is not universal phenomenon presence does barrier spread

Language: Английский

Citations

1

Deep learning with a small dataset predicts chromatin remodelling contribution to winter dormancy of apple axillary buds DOI Creative Commons
Takanori Saito, Shanshan Wang,

Katsuya Ohkawa

et al.

Tree Physiology, Journal Year: 2024, Volume and Issue: 44(7)

Published: June 21, 2024

Epigenetic changes serve as a cellular memory for cumulative cold recognition in both herbaceous and tree species, including bud dormancy. However, most studies have discussed predicted chromatin structure with respect to histone marks. In the present study, we investigated structural dynamics of bona fide determine how plants recognize prolonged chilling during initial stage The vegetative axillary buds 'Fuji' apple, which shows typical low temperature-dependent, but not photoperiod, dormancy induction, were used transcriptional change analyses. results integrated using deep-learning model interpreted statistical models, Bayesian estimation. Although our was constructed small dataset two time points, remodelling due random excluded. involvement nucleosome pivotal contribution cold-driven circadian rhythm-dependent pathways regulated by mobility cis-regulatory elements predicted. These findings may help develop potential genetic targets breeding species less overcome effects short winters global warming. Our artificial intelligence concept can improve epigenetic analysis dataset, especially non-model immature genome databases.

Language: Английский

Citations

1

Evolutionary responses of dominant and companion species along the precipitation gradient in a typical steppe from 1985 to 2022 DOI Creative Commons
Yi Zhou, Shenghua Chang, Xiaojuan Huang

et al.

Environmental and Experimental Botany, Journal Year: 2024, Volume and Issue: 229, P. 106075 - 106075

Published: Dec. 11, 2024

Language: Английский

Citations

1

How Aestivation Evolved in Turtles: A Macroevolutionary and Morphological Approach DOI Creative Commons
Rodrigo Macip‐Ríos, Taggert Butterfield, Ernesto Raya‐García

et al.

Evolutionary Biology, Journal Year: 2023, Volume and Issue: 50(3), P. 381 - 394

Published: June 21, 2023

Abstract Aestivation (summer dormancy) is a long-term multiday torpor in response to hot and dry periods. It has been detected many species of terrestrial aquatic turtles; however, several ecological evolutionary aspects chelonian aestivation remain be evaluated understood. We conducted comparative exploration macroevolutionary trends turtle tested the potential correlation shell morphology with duration. compiled dataset status, times, measurements 225 species. reconstructed ancestral states along time-calibrated phylogeny different models on presence/absence trait. also performed phylogenetic analysis explore morphological traits likely associated duration time behavior. found evidence 44% times were longer Chelidae, Pelomedusidae, Geoemydidae, Kinosternidae, shortest Emydidae Testudinidae. behavior derived trait evolved independently pleurodires cryptodires groups. some families, Pelomedusidae Kinosternidae showed considerable increases presence trait, while families such as Podocnemididae, Trionychidae Chelydridae important deductions for same Our results association between turtles contrasting among families. Overall, it was contribution that allow positive significant times.

Language: Английский

Citations

3

Physiological and transcriptomic responses of two Artemisia californica populations to drought: implications for restoring drought-resilient native communities DOI Creative Commons
Hagop S. Atamian, Jennifer L. Funk

Global Ecology and Conservation, Journal Year: 2023, Volume and Issue: 43, P. e02466 - e02466

Published: April 6, 2023

As climate change brings drier and more variable rainfall patterns to many arid semi-arid regions, land managers must re-assemble appropriate plant communities for these conditions. Transcriptome sequencing can elucidate the molecular mechanisms underlying responses changing environmental conditions, potentially enhancing our ability screen suitable genotypes species restoration. We examined physiological morphological traits transcriptome sequences of coastal inland populations California sagebrush (Artemisia californica), a critical shrub used restore sage scrub vegetation communities, grown under low high environments. The are located approximately 36 km apart but differ in mean annual precipitation, with population experiencing 42% rainfall. found subtle phenotypic differences between populations, plants from showing higher rates carbon assimilation growth, considerable decrease function response drought compared population. observed extensive A. californica root leaf tissues. While two shared several drought, such as upregulated protein folding stabilization, demonstrated stress than populations. Furthermore, transcriptomic results showed reduced aboveground growth early flowering which may reduce evaporative loss maximize reproductive output, respectively, These consistent trade-off tolerance, where has strategy aligned population, be better able tolerate stress. Identifying drought-tolerant ultimately lead cost savings maintaining restored areas future

Language: Английский

Citations

2