964 results match your criteria cold desiccation


Cold plasma technique as a pretreatment for drying fruits: Evaluation of the excitation frequency on drying process and bioactive compounds.

Food Res Int 2021 09 31;147:110462. Epub 2021 May 31.

Grupo de Inovação em Biotecnologia e Alimentos da Amazônia (gIBA), Federal University of Amazonas, Manaus/AM, Brazil; Faculty of Agrarian Science, Federal University of Amazonas, Manaus/AM, Brazil. Electronic address:

The present work aims to evaluate the effect of different excitation frequency (200, 500 and 800 Hz) of cold plasma technique as a pretreatment for drying tucumã. SEM images showed changes on the pretreated tucumã's surface, favoring the drying rate and diffusivity of water as well as reducing the drying time. Marginal variation of color and reduced drying time were observed in the samples treated using 200 and 800 Hz. Read More

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September 2021

Successful Cryopreservation of Dormant Buds of Blackcurrant ( L.) by Using Greenhouse-Grown Plants and In Vitro Recovery.

Plants (Basel) 2021 Jul 10;10(7). Epub 2021 Jul 10.

Natural Resources Institute Finland (Luke), Production Systems, Itäinen Pitkäkatu 4 A, FI-20520 Turku, Finland.

The cryopreservation of dormant buds can be a feasible method for preserving germplasm of cold-tolerant woody plants. In the present study, we evaluated the effects of pre-desiccation, thawing method, and the rehydration of bud sections on the post-cryopreservation recovery of dormant blackcurrant buds in vitro. The estimated recovery of small- and medium-sized buds was 80. Read More

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Temperature during seed maturation controls seed vigour through ABA breakdown in the endosperm and causes a passive effect on DOG1 mRNA levels during entry into quiescence.

New Phytol 2021 Jul 27. Epub 2021 Jul 27.

Department of Crop Genetics, John Innes Centre, Norwich Research Park, Norwich, NR4 7UH, UK.

Temperature variation during seed set is an important modulator of seed dormancy and impacts the performance of crop seeds through effects on establishment rate. It remains unclear how changing temperature during maturation leads to dormancy and growth vigour differences in nondormant seedlings. Here we take advantage of the large seed size in Brassica oleracea to analyse effects of temperature on individual seed tissues. Read More

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Protein microbeadification to achieve highly concentrated protein formulation with reversible properties and in vivo pharmacokinetics after reconstitution.

Int J Biol Macromol 2021 Aug 5;185:935-948. Epub 2021 Jul 5.

College of Pharmacy, Dongguk University-Seoul, Gyeonggi 13026, Republic of Korea. Electronic address:

A protein precipitation technique was optimized to produce biophysically stable 'protein microbeads', applicable to highly concentrated protein formulation. Initially, production of BSA microbeads was performed using rapid dehydration by vortexing in organic solvents followed by cold ethanol treatment and a vacuum drying. Out of four solvents, n-octanol produced the most reversible microbeads upon reconstitution. Read More

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Effect of Short-Term Desiccation, Recovery Time, and CAPA-PVK Neuropeptide on the Immune System of the Burying Beetle .

Front Physiol 2021 21;12:671463. Epub 2021 Jun 21.

Department of Animal Physiology and Developmental Biology, Faculty of Biology, Adam Mickiewicz University in Poznań, Poznań, Poland.

Environmental conditions, especially related to winter, are crucial for shaping activity of insect immune system. However, our previous research clearly indicates differences in the immune system functioning when the cold stress was induced in the laboratory conditions and when the beetles were collected from natural environment during winter. This is probably related to the multiplication of observed effects by simultaneous presence of different stress factors characteristic of winter, including desiccation. Read More

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Optimal Conditions for Diapause Survival of , an Egg Parasitoid for Biological Control of .

Insects 2021 Jun 9;12(6). Epub 2021 Jun 9.

USDA-ARS European Biological Control Laboratory, 34980 Montferrier-sur-Lez, France.

is a specialist egg parasitoid of the citrus longhorned beetle , a high-risk invasive pest of hardwood trees. The parasitoid overwinters as diapausing mature larvae within the host egg and emerges in early summer in synchrony with the egg-laying peak of . This study investigated the parasitoid's diapause survival in parasitized host eggs that either remained in potted trees under semi-natural conditions in southern France or were removed from the wood and held at four different humidities (44, 75, 85-93 and 100% RH) at 11 °C or four different temperature regimes (2, 5, 10 and 12. Read More

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Chromosome-Scale Genome Assembly of the Resurrection Plant Acanthochlamys bracteata (Velloziaceae).

Genome Biol Evol 2021 Aug;13(8)

State Key Laboratory of Systematic and Evolutionary Botany, Institute of Botany, Chinese Academy of Sciences, Beijing, China.

Acanthochlamys bracteata (Velloziaceae) is a resurrection plant with cold tolerance. Herein, a chromosome-level reference genome of A. bracteata based on Nanopore, Illumina, and Hi-C data is reported. Read More

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Impact of the thermal drying of sludge on the nitrogen mass balance of a WWTP, and GHG emissions with classical and novel treatment approach - A full-scale case study.

J Environ Manage 2021 Sep 16;294:113049. Epub 2021 Jun 16.

Faculty of Environmental Engineering, Wroclaw University of Technology, Wybrzeże Stanisława Wyspiańskiego 27, 50-370, Wroclaw, Poland; Wroclaw Municipal Water and Sewage Company, Na Grobli 19, 50-421, Wrocław, Poland. Electronic address:

This is the first study that identifies nitrogen loss and drier liquor parameters in a full scale sludge drying facility. Obtained data enabled proposing novel treatment based on deammonification process that allows not only nitrogen removal from drier liquor but also from gravity thickeners supernatant, the stream that is considered too cold for deammonification. The novel treatment approach is compared with nitrification/denitrification in activated sludge process in terms of greenhouse gas emissions. Read More

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September 2021

Bumblebee resilience to climate change, through plastic and adaptive responses.

Glob Chang Biol 2021 Sep 30;27(18):4223-4237. Epub 2021 Jun 30.

Laboratory of Agrozoology, Department Plants and Crops, Faculty of Bioscience Engineering, Ghent University, Ghent, Belgium.

Bumblebees are ubiquitous, cold-adapted eusocial bees found worldwide from subarctic to tropical regions of the world. They are key pollinators in most temperate and boreal ecosystems, and both wild and managed populations are significant contributors to agricultural pollination services. Despite their broad ecological niche at the genus level, bumblebee species are threatened by climate change, particularly by rising average temperatures, intensifying seasonality and the increasing frequency of extreme weather events. Read More

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September 2021

The role of antioxidant defense in freezing tolerance of resurrection plant .

Physiol Mol Biol Plants 2021 May 7;27(5):1119-1133. Epub 2021 May 7.

Institute of Biophysics and Biomedical Engineering, Bulgarian Academy of Sciences, Acad. G. Bonchev Str., Bl. 21, 1113 Sofia, Bulgaria.

Friv. is unique with its ability to survive two extreme environmental stresses-desiccation to air-dry state and subzero temperatures. In contrast to desiccation tolerance, the mechanisms of freezing tolerance of resurrection plants are scarcely investigated. Read More

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Developmental and adult acclimation impact cold and drought survival of invasive tropical Drosophila kikkawai.

Biol Open 2021 Jun 8;10(6). Epub 2021 Jun 8.

Department of Genetics, Maharshi Dayanand University, Rohtak 124001, India.

Narrow distribution patterns of tropical Drosophila species are limited by lower resistance to cold or drought. In the invasive tropical Drosophila kikkawai, we tested whether developmental and adult acclimations at cooler temperatures could enhance its stress resistance level. Adult acclimation of winter collected body color morphs revealed a significant increase in the level of cold resistance. Read More

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Cold Shock Proteins: Small Proteins with A Huge Impact.

Microorganisms 2021 May 14;9(5). Epub 2021 May 14.

Institute for Food Safety and Hygiene, Vetsuisse Faculty, University of Zurich, CH-8057 Zurich, Switzerland.

has evolved an extensive array of mechanisms for coping with stress and adapting to changing environmental conditions, ensuring its virulence phenotype expression. For this reason, has been identified as a significant food safety and public health concern. Among these adaptation systems are cold shock proteins (Csps), which facilitate rapid response to stress exposure. Read More

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Multivariate analysis of adaptive response to ferulic acid and p-coumaric acid after physiological stresses in Cronobacter sakazakii.

J Appl Microbiol 2021 May 28. Epub 2021 May 28.

Department of Biotechnology and Bioinformatics, Jaypee University of Information Technology, Waknaghat, India.

Aim: The present study demonstrated the antimicrobial activity of ferulic acid and p-coumaric acid against unstressed and stressed (cold stressed, starved and desiccated) Cronobacter sakazakii in laboratory media (37°C) and reconstituted powdered infant formulation (PIF) with mild heat treatment (50°C).

Methods And Results: Five phenolics, namely, quercetin, rutin, caffeic acid, ferulic acid and p-coumaric acid, were tested for antimicrobial activities against five strains of C. sakazakii either unstressed or stressed. Read More

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Leveraging Stress Response Mechanisms for Industrial Applications.

Front Microbiol 2021 10;12:660134. Epub 2021 May 10.

Department of Plant and Microbial Biology, North Carolina State University, Raleigh, NC, United States.

Members of the genus are metabolically versatile and capable of adapting to a wide variety of environments. Stress physiology of strains has been extensively studied because of their biotechnological potential in agriculture as well as their medical importance with regards to pathogenicity and antibiotic resistance. This versatility and scientific relevance led to a substantial amount of information regarding the stress response of a diverse set of species such as , , , , and . Read More

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Plastic changes in cold and drought tolerance of Drosophila nepalensis correlate with sex-specific differences in body melanization, cuticular lipid mass, proline accumulation, and seasonal abundance.

Comp Biochem Physiol A Mol Integr Physiol 2021 08 20;258:110985. Epub 2021 May 20.

Department of Genetics, Maharshi Dayanand University, Rohtak 124001, India.

Autumn-collected flies of Himalayan Drosophila nepalensis differ in body color phenotypes (males more melanized relative to females) and in their behavior (males abundant in the open sites vs. shelters-seeking females). In contrast, winter-collected flies of both sexes are equally melanized and abundant in the open sites. Read More

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Determining the effect of pretreatments on freeze resistance and survival of cryopreserved temperate fruit tree dormant buds.

Cryobiology 2021 Aug 13;101:87-94. Epub 2021 May 13.

Colorado State University, Department of Horticulture & Landscape Architecture, Fort Collins, CO, 80523, USA. Electronic address:

Freeze resistance is critical to successful dormant bud (DB) cryopreservation, and is affected by genotype, environmental conditions, dormancy phase and processing techniques. Pretreatment induced freeze resistance may contribute to more successful and efficient protocols for cryopreserving DB. Differential thermal analysis (DTA) was used to quantify the effects of cryopreservation pretreatments on freeze resistance of dormant budwood. Read More

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Storage Behavior and Cryopreservation of Citrus cavaleriei, an Endangered, Cold-resistant Species of Northeast India with Exceptionally Large Seeds.

Cryo Letters 2020 Sep-Oct;41(5):281-290

Royal Botanic Gardens, Kew, Wakehurst, Ardingly, West Sussex RH17 6TN, UK.

Background: Ichang Papeda (Citrus cavaleriei H.Lév. ex Cavalerie) is a wild and endangered species of NE India that requires urgent preservation of its genetic resources. Read More

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Daily increasing or decreasing photoperiod affects stress resistance and life history traits in four Drosophila species.

J Insect Physiol 2021 Jul 8;132:104251. Epub 2021 May 8.

Dept. of Biology, Aarhus University, Ny Munkegade 116, DK-8000 Aarhus C, Denmark.

Photoperiod is one of the most reliable seasonal cues that organisms can use to prepare for upcoming environmental changes. Evidence suggests that exposure to different photoperiod can activate plastic responses in stress resistance traits, while there is limited evidence on the plastic response induced by daily progressive cumulative changes in photoperiod. In this study, we assayed the effect of within generation daily uni-directional and cumulative changes in photoperiod on stress resistance and life history traits in four Drosophila species. Read More

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Experimental freezing of freshwater pennate diatoms from polar habitats.

Protoplasma 2021 Apr 28. Epub 2021 Apr 28.

Department of Ecology, Faculty of Science, Charles University, Viničná 7, 128 44, Prague 2, Czech Republic.

Diatoms are microalgae that thrive in a range of habitats worldwide including polar areas. Remarkably, non-marine pennate diatoms do not create any morphologically distinct dormant stages that could help them to successfully face unfavourable conditions. Their survival is probably connected with the adaptation of vegetative cells to freezing and desiccation. Read More

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Identification of the trehalose-6-phosphate synthase gene family in Medicago truncatula and expression analysis under abiotic stresses.

Gene 2021 Jun 18;787:145641. Epub 2021 Apr 18.

College of Biological Sciences and Engineering, Jiangxi Agricultural University, Nanchang 330045, PR China. Electronic address:

Trehalose-6-phosphate synthase (TPS) exerts important functions related to plant desiccation tolerance and responses to environmental stimuli. However, in Medicago truncatula, the TPS family has not been reported to date. This study found 11 MtTPS genes in the genome of M. Read More

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Molecular mechanisms and highly functional development for stress tolerance of the yeast Saccharomyces cerevisiae.

Authors:
Hiroshi Takagi

Biosci Biotechnol Biochem 2021 Apr;85(5):1017-1037

Division of Biological Science, Graduate School of Science and Technology, Nara Institute of Science and Technology, Nara, Japan.

In response to environmental stress, microorganisms adapt to drastic changes while exerting cellular functions by controlling gene expression, metabolic pathways, enzyme activities, and protein-protein interactions. Microbial cells that undergo a fermentation process are subjected to stresses, such as high temperature, freezing, drying, changes in pH and osmotic pressure, and organic solvents. Combinations of these stresses that continue over long terms often inhibit cells' growth and lead to their death, markedly limiting the useful functions of microorganisms (eg their fermentation ability). Read More

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Molecular Characterization and Transcriptional Expression Analysis of ABC Transporter H Subfamily Genes in the Oriental Fruit Fly.

J Econ Entomol 2021 06;114(3):1298-1309

Key Laboratory of Entomology and Pest Control Engineering, College of Plant Protection, Southwest University, Chongqing, China.

The oriental fruit fly, Bactrocera dorsalis Hendel (Diptera: Tephretidae), is a serious pest of fruits and vegetables and has developed high levels of insecticide resistance. ATP-binding cassette transporter genes (ABC transporters) are involved in mediating the energy-driven transport of many substances across membranes and are closely associated with development and insecticide detoxification. In this study, three ABC transporters in the H subfamily were identified, and the possible roles of these genes in B. Read More

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Increased size and energy reserves in diapausing eggs of temperate Aedes aegypti populations.

J Insect Physiol 2021 May-Jun;131:104232. Epub 2021 Mar 31.

Departamento de Ecología, Genética y Evolución, and Instituto IEGEBA (UBA-CONICET), Facultad de Ciencias Exactas y Naturales, Universidad de Buenos Aires. Ciudad Universitaria, Pabellón 2. C1428EHA, Buenos Aires, Argentina. Electronic address:

Many insects overwinter in diapause, a pre-programmed anticipated response to unfavorable environmental conditions, often induced by a short-day photoperiod. Diapause involves morphological changes and increased energy stores required for metabolic demands during winter. In diapausing mosquito eggs, the accumulation of lipids plays an important role, because these molecules are the primary fuel consumed during embryogenesis and pharate larvae metabolism, and have a key role in egg desiccation resistance. Read More

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Effects of stream permanence on stonefly (Insecta, Plecoptera) community structure at Mammoth Cave National Park, Kentucky, USA.

Biodivers Data J 2021 10;9:e62242. Epub 2021 Mar 10.

Western Kentucky University, Bowling Green, United States of America Western Kentucky University Bowling Green United States of America.

Stoneflies (Plecoptera) are often associated with inhabiting cold perennial streams, but many species also inhabit intermittent streams that experience reduced or lack of flow during summer and autumn. In this study, the influence of stream permanence on stonefly assemblage composition and spatial distribution at Mammoth Cave National Park, Kentucky, USA, was addressed, based on a 14 month sampling regime from the fullest range of stream sizes and habitable flow regions available. Adult stoneflies were collected monthly from 43 sites at the Park plus an additional two sites at the near-adjacent Western Kentucky University Green River Preserve. Read More

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Physicochemical Approach to Understanding the Structure, Conformation, and Activity of Mannan Polysaccharides.

Biomacromolecules 2021 04 17;22(4):1445-1457. Epub 2021 Mar 17.

Department of Chemical Sciences, University of Naples "Federico II", Complesso Universitario Monte S. Angelo, Via Cintia 4, 80126 Naples, Italy.

Extracellular polysaccharides are widely produced by bacteria, yeasts, and algae. These polymers are involved in several biological functions, such as bacteria adhesion to surface and biofilm formation, ion sequestering, protection from desiccation, and cryoprotection. The chemical characterization of these polymers is the starting point for obtaining relationships between their structures and their various functions. Read More

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The effect of different pretreatments followed by enzyme reaction on preparing shape-retaining softened burdock.

Authors:
Jung-Ah Han

Food Chem 2021 Aug 3;353:129440. Epub 2021 Mar 3.

Department of Food and Nutrition, Sangmyung University, Seoul 03016, Republic of Korea. Electronic address:

To prepare texture-softened burdock that maintains its original shape, the effect of three different pretreatments before pectinase reaction (ENZ) up to 3 h: heating and drying (HD), freeze-thawing after heating and then drying (HFTD), or freeze-drying after heating (HFD) was compared. The hardness of raw burdock could be decreased by 15% after ENZ up to 3 h. The order of hardness by pretreatment was HFD (-93. Read More

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Elevated Trehalose Levels in Mutants Increase Stress Resistance, Not Lifespan.

Metabolites 2021 Feb 12;11(2). Epub 2021 Feb 12.

Laboratory of Aging Physiology and Molecular Evolution, Department of Biology, Ghent University, K.L. Ledeganckstraat 35, B-9000 Ghent, Belgium.

The insulin/IGF-1 (insulin-like growth factor 1) signaling mutant recapitulates the dauer metabolic signature-a shift towards lipid and carbohydrate accumulation-which may be linked to its longevity and stress resistance phenotypes. Trehalose, a disaccharide of glucose, is highly upregulated in mutants and it has been linked to proteome stabilization and protection against heat, cold, desiccation, and hypoxia. Earlier studies suggested that elevated trehalose levels can explain up to 43% of the lifespan extension observed in mutants. Read More

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February 2021

Cynodontium luthii sp. nov.: a permineralized moss gametophyte from the Late Cretaceous of the North Slope of Alaska.

Am J Bot 2021 03 2;108(3):495-504. Epub 2021 Mar 2.

Department of Botany and Plant Pathology, Oregon State University, Corvallis, Oregon, 97331, USA.

Premise: Mosses are a major component of Arctic vegetation today, with >500 species known to date. However, the origins of the Arctic moss flora are poorly documented in the fossil record, especially prior to the Pliocene. Here, we present the first anatomically preserved pre-Cenozoic Arctic moss and discuss how the unique biology of bryophytes has facilitated their success in polar environments over geologic time. Read More

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Effect of drying methods on the solubility and amphiphilicity of room temperature soluble gelatin extracted by microwave-rapid freezing-thawing coupling.

Food Chem 2021 Jul 9;351:129226. Epub 2021 Feb 9.

College of Food Science, Southwest University, Chongqing 400715, China; Chongqing Key Laboratory of Soft-Matter Material Chemistry and Function Manufacturing, Southwest University, Chongqing 400715, China; Biological Science Research Center, Southwest University, Chongqing 400715, China. Electronic address:

The effect of three drying methods (hot air, freeze and spray drying) on the solubility and amphiphilicity of gelatin were investigated and compared. Results showed spray drying gelatin (SDG) and hot air drying gelatin (HDG) showed the lowest and best solubility, respectively. This phenomenon was attributed to the degree of subunits degradation and hydrophobicity. Read More

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