The freeze-avoiding mountain pine beetle (Dendroctonus ponderosae) survives prolonged exposure to stressful cold by mitigating ionoregulatory collapse DOI Creative Commons
Mads Kuhlmann Andersen, Amanda D. Roe,

Alice Liu

и другие.

bioRxiv (Cold Spring Harbor Laboratory), Год журнала: 2024, Номер unknown

Опубликована: Фев. 18, 2024

Insect performance is intrinsically linked to environmental temperature, and surviving through winter represents a key challenge for temperate, alpine, polar species. To overwinter, insects have adapted wide range of strategies become truly cold hardy. However, while the physiological mechanisms underlying ability avoid or tolerate freezing been well-studied, little attention has given maintaining ion homeostasis at frigid temperatures in these species, despite this being central issue susceptible mild chilling. Here we investigate how prolonged exposure just above supercooling point affects balance freeze-avoiding larvae mountain pine beetle (Dendroctonus ponderosae) autumn, mid-winter, spring, relate it organismal recovery times survival outcomes. We found that hemolymph was gradually disrupted during first day exposure, characterized by hyperkalemia hyponatremia, after which plateau reached maintained rest seven experiment. The degree ionoregulatory collapse experienced correlated strongly with times, followed similar asymptotical progression. Mortality increased slightly most severe exposures, where K+ concentration highest, logistic relationship between hyperkalemia. Thus, tolerance D. ponderosae appears limited prevent manner less tolerant chill-susceptible insects, albeit much lower temperatures. Furthermore, posit prerequisite evolution insect freeze avoidance convergent ancestral maintain extreme stress.

Язык: Английский

Integrating physiological and molecular insights in cotton under cold stress conditions DOI
Aamir Ali Abro, Muhammad Qasim,

Mubashir Abbas

и другие.

Genetic Resources and Crop Evolution, Год журнала: 2024, Номер unknown

Опубликована: Авг. 28, 2024

Язык: Английский

Процитировано

4
Application of the thermal death time model in predicting thermal damage accumulation in plants DOI
Andreas Faber, Michael Ørsted, Bodil K. Ehlers

и другие.

Journal of Experimental Botany, Год журнала: 2024, Номер 75(11), С. 3467 - 3482

Опубликована: Март 6, 2024

The thermal death time (TDT) model suggests that the duration for which an organism can tolerate stress decreases exponentially as intensity of temperature becomes more extreme. This has been used to predict damage accumulation in ectothermic animals and plants under fluctuating conditions. However, critical assumption TDT model, is additive accumulation, remains unverified plants. We assessed Thymus vulgaris different heat cold treatments, models failure PSII. Additionally, tolerance estimates from previous studies were create assess applicability this framework show between 44 °C 47 -6.5 -8 °C, at both extremes. Data indicate a broad approach across plant species traits. reveals landscape describing relationship exposure duration, intensity, percentage accumulation. extreme sensitivity emphasizes even 1 increase future temperatures could impact their mortality distribution.

Язык: Английский

Процитировано

3
Single-nuclei multiome ATAC and RNA sequencing reveals the molecular basis of thermal plasticity inDrosophila melanogasterembryos DOI Creative Commons
Thomas S. O’Leary, Emily E. Mikucki, Sumaetee Tangwancharoen

и другие.

bioRxiv (Cold Spring Harbor Laboratory), Год журнала: 2025, Номер unknown

Опубликована: Янв. 8, 2025

Embryogenesis is remarkably robust to temperature variability, yet there limited understanding of the homeostatic mechanisms that offset thermal effects during early development. Here, we measured acclimation response upper limits and profiled chromatin state transcriptome D. melanogaster embryos (Bownes Stage 11) using single-nuclei multiome ATAC RNA sequencing. We report acclimation, while preserving a common set primordial cell types, rapidly shifted limit. Cool-acclimated showed characterized by increased accessibility at transcription factor binding motifs for transcriptional activator Zelda, along with enhanced activity gene regulatory networks in types including foregut hindgut, mesoderm, peripheral nervous system. In addition, cool-acclimated had higher expression genes encoding ribosomal proteins enzymes involved oxidative phosphorylation. Despite hypothesis differential heat tolerance might be explained molecular chaperones, did not observe widespread differences or shock genes. Overall, our results suggest environmental robustness embryogenesis necessitates responses regulate speed development, potentially imposing metabolic costs constrain limits.

Язык: Английский

Процитировано

0
Heat and Cold Shocks Decrease the Incidence of Diapause in Trichogramma telengai Larvae DOI Creative Commons
Н. Д. Войнович, S. Ya. Reznik

Insects, Год журнала: 2025, Номер 16(1), С. 54 - 54

Опубликована: Янв. 8, 2025

Insect diapause and response to thermal stress are similar in the variety of manifestations. However, influence shocks on incidence insect has not been sufficiently studied. Our laboratory experiments showed that both cold (-10 °C) heat (43 experienced for at least 20-30 min significantly reduced facultative larval winter egg parasitoid Trichogramma telengai. patterns these responses were substantially different. In particular, peaks sensitivity diapause-averting effects fell, correspondingly, middle-stage (5 days development 15 late-stage (9-11 larvae. Heat mostly via changes initial proportions diapause-destined non-diapause-destined individuals, whereas effect is based differential mortality (i.e., difference among treatments same experiment) with better survival individuals. These results elucidate peculiarities interaction between diapause, allowing us specify methods mass rearing storage.

Язык: Английский

Процитировано

0
Natural diets and cold acclimation, but not supplementary cryoprotectants, affect the cold tolerance of Hippodamia variegata DOI

Mahsa Khabir,

Hamzeh Izadi,

Kamran Mahdian

и другие.

Biocontrol Science and Technology, Год журнала: 2025, Номер unknown, С. 1 - 21

Опубликована: Фев. 6, 2025

Язык: Английский

Процитировано

0
Exploring the influence of habitat, ground refugia and behavioral strategies on the overwintering success of Drosophila suzukii, Matsumura DOI Open Access

Binita Shrestha,

Dara G. Stockton,

Stephen P. Hesler

и другие.

Pest Management Science, Год журнала: 2025, Номер unknown

Опубликована: Фев. 7, 2025

The overwintering biology of Drosophila suzukii is poorly understood. While thermal tolerance studies suggest that winter morphotype females likely survive harsh winters given physiological changes lead to cold-hardening, additional factors such as habitat selection are important but In the present study, we conducted a field study at three vineyard sites investigate selection, semi-field measure survival outcomes depending on various ground refugia, and laboratory evaluate vertical movement in response simulated flood conditions often observed winter. Our results showed things. First, was most abundant wooded areas vineyards near pomace piles. Few were captured itself even fewer winery facilities. Second, insulating cover straw beneficial improving survivability. Third, while during stable periods below freezing, warm-up where snow melts subsequently floods ground, fly mobility critical for survival. Cold acclimated flies active participants their environment, freezing temperatures, navigating changing landscape features adjusting position temperature conditions. data first time cold capable temperatures water levels rise level thaw events. Thus, behavior ecology D. more complex than previously thought, there several addition hardening contribute success. © 2025 Society Chemical Industry.

Язык: Английский

Процитировано

0
Cold Tolerance of European Populations of Drosophila Suzukii Varies Among Seasonal Phenotypes DOI

Madelena De Ro,

Tom Devos,

Nick Berkvens

и другие.

Опубликована: Янв. 1, 2025

Язык: Английский

Процитировано

0
How does ageing affect life history traits and cold tolerance in summer‐versus winter‐acclimated fruit flies? DOI Creative Commons
Bréa Raynaud‐Berton, Patricia Gibert, Hervé Colinet

и другие.

Ecological Entomology, Год журнала: 2025, Номер unknown

Опубликована: Март 12, 2025

Abstract All species exhibit functional senescence, a process related to ageing that is influenced by both abiotic and biotic factors. Ageing leads decline in function drives phenotypic marked reduction performance over time. In temperate regions, overwintering must survive age for several months, often facing challenging conditions with low food availability chilling injuries. Yet, might enter state of dormancy, which can extend longevity enhance stress tolerance. Evaluating the survivors crucial predicting population dynamics, especially significant pests like invasive fruit flies. At end winter, surviving fly populations, are expected rebuild new generations, likely dormant (i.e., reproductive quiescence) senescent. However, their has not been thoroughly described. This study aims decipher effect on tolerance capacity males females summer‐acclimated (SP) versus winter‐acclimated (WP) phenotypes Drosophila suzukii . SP WP flies were reared under normal temperature conditions, respectively, four categories established: very young, middle old. showed typical age‐related fecundity. contrast, cold‐acclimated maintained high exhibited lower but stable potential, despite months at temperature. Our highlights importance distinguishing between summer phenotypes, as differentially affects both.

Язык: Английский

Процитировано

0
Effects of duration and type of cold acclimation on the subsequent cold tolerance of a tenebrionid beetle DOI Creative Commons

Samira Khodayari,

Stéphane A. P. Derocles, David Renault

и другие.

Journal of Thermal Biology, Год журнала: 2025, Номер unknown, С. 104100 - 104100

Опубликована: Март 1, 2025

Язык: Английский

Процитировано

0
Environmental conditions influencing seasonal population dynamics of Drosophila suzukii (Diptera: Drosophilidae) in mid‐latitude organic farms DOI
Eleanor A. McCabe, Megan McCabe, Jack J. Devlin

и другие.

Agricultural and Forest Entomology, Год журнала: 2025, Номер unknown

Опубликована: Апрель 1, 2025

Abstract The local population dynamics of an invasive species are important for determining proper management. Temporal and spatial distribution can influence monitoring treatment decisions, understanding climatic influences on size help predict peak numbers. Drosophila suzukii (Matsumara, 1931) is fruit pest, its seasonal vary across range. We conducted a three‐year trapping study with various modelling approaches to determine the environmental variables influencing D. all seasons in Kentucky, temperate state overwintering . Male female flies were active seasons, visiting traps located ground at plant height. Most caught wooded edge habitat crops only had more catches than forest during summer. Population was best predicted by general additive model that included average temperature 8 weeks before sampling relative humidity two sampling, which differs from other models have extremely low as most predictive weather variable. Our results indicate factors Kentucky differ those higher or lower latitudes. recommend leading up fruiting pest pressure. Further, our suggest optimal time monitor when temperatures exceed 21°C. Broadly, findings highlight need investigate these appropriate scale develop region‐specific management recommendations.

Язык: Английский

Процитировано

0