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abiotic stress

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https://www.readbyqxmd.com/read/29454832/identification-and-functional-analysis-of-inhibitor-of-nf-%C3%AE%C2%BAb-kinase-ikk-from-scylla-paramamosain-the-first-evidence-of-three-ikks-in-crab-species-and-their-expression-profiles-under-biotic-and-abiotic-stresses
#1
Mei Jiang, Dan-Dan Tu, Wen-Bin Gu, Yi-Lian Zhou, Qi-Hui Zhu, Xiao-Ling Guo, Miao-An Shu
IKK (inhibitor of NF-κB kinase) is the core regulator for NF-κB (nuclear factor-κB) pathway against pathogenic invasion in vertebrates or invertebrates. However, the IKK from crab species has not yet been identified. In the present study, three full-length cDNA sequences of IKKs from mud crab Scylla paramamosain, designated as SpIKKβ, SpIKKε1 and SpIKKε2, were firstly cloned through RT-PCR and RACE methods. This is also the first report about the identification of two IKKε genes in mud crab and even in crustaceans...
February 15, 2018: Developmental and Comparative Immunology
https://www.readbyqxmd.com/read/29453534/nanoparticles-caused-oxidative-imbalance
#2
Mariusz Zuberek, Agnieszka Grzelak
Application of nanomaterials in nearly every single branch of industry results in their accumulation in both abiotic environment and tissues of living organisms. Despite the common use of nanomaterials, we are not able to precisely define their toxicity towards humans and surrounding biota. Although we were able to determine final effects of chronic exposure to nanoparticles which consist of many pathologies such as respiratory diseases, allergies, diseases of cardiovascular system, disorders in embryonic life differentiation and growth disorders, toxic effects on the immune system and cancers...
2018: Advances in Experimental Medicine and Biology
https://www.readbyqxmd.com/read/29453355/co-expression-network-analysis-and-cis-regulatory-element-enrichment-determine-putative-functions-and-regulatory-mechanisms-of-grapevine-atl-e3-ubiquitin-ligases
#3
Darren C J Wong, Pietro Ariani, Simone Castellarin, Annalisa Polverari, Elodie Vandelle
Arabidopsis thaliana Toxicos en Levadura (ATL) proteins are a subclass of the RING-H2 zinc finger binding E3 ubiquitin ligases. The grapevine (Vitis vinifera) ATL family was recently characterized, revealing 96 members that are likely to be involved in several physiological processes through protein ubiquitination. However, the final targets and biological functions of most ATL E3 ligases are still unknown. We analyzed the co-expression networks among grapevine ATL genes across a set of transcriptomic data related to defense and abiotic stress, combined with a condition-independent dataset...
February 16, 2018: Scientific Reports
https://www.readbyqxmd.com/read/29452950/dynamic-fungal-cell-wall-architecture-in-stress-adaptation-and-immune-evasion
#4
REVIEW
Alex Hopke, Alistair J P Brown, Rebecca A Hall, Robert T Wheeler
Deadly infections from opportunistic fungi have risen in frequency, largely because of the at-risk immunocompromised population created by advances in modern medicine and the HIV/AIDS pandemic. This review focuses on dynamics of the fungal polysaccharide cell wall, which plays an outsized role in fungal pathogenesis and therapy because it acts as both an environmental barrier and as the major interface with the host immune system. Human fungal pathogens use architectural strategies to mask epitopes from the host and prevent immune surveillance, and recent work elucidates how biotic and abiotic stresses present during infection can either block or enhance masking...
February 13, 2018: Trends in Microbiology
https://www.readbyqxmd.com/read/29450758/overexpression-of-altmp2-gene-from-the-halophyte-grass-aeluropus-littoralis-in-transgenic-tobacco-enhances-tolerance-to-different-abiotic-stresses-by-improving-membrane-stability-and-deregulating-some-stress-related-genes
#5
Walid Ben-Romdhane, Rania Ben-Saad, Donaldo Meynard, Nabil Zouari, Ali Mahjoub, Lotfi Fki, Emmanuel Guiderdoni, Abdullah Al-Doss, Afif Hassairi
Herein, we report isolation of the AlTMP2 gene from the halophytic C4 grass Aeluropus littoralis. The subcellular localization suggested that AlTMP2 is a plasma membrane protein. In A. littoralis exposed to salt and osmotic stresses, the AlTMP2 gene was induced early and at a high rate, but was upregulated relatively later in response to abscisic acid and cold treatments. Expression of AlTMP2 in tobacco conferred improved tolerance against salinity, osmotic, H 2 O 2 , heat, and freezing stresses at the germination and seedling stages...
February 15, 2018: Protoplasma
https://www.readbyqxmd.com/read/29450670/acetylsalicylic-acid-enhance-tolerance-of-phaseolus-vulgaris-l-to-chilling-stress-improving-photosynthesis-antioxidants-and-expression-of-cold-stress-responsive-genes
#6
Mona H Soliman, Aisha A M Alayafi, Amr A El Kelish, Abdelghafar M Abu-Elsaoud
BACKGROUND: High and low temperatures constitute the most damaging type of abiotic stress and limit the survival, and productivity of plants. The present study aimed to evaluate the role of exogenous applications of acetylsalicylic acid (ASA) in reducing the deleterious effects of cold stress. Phaseolus vulgaris L. seedlings were treated with foliar-sprayed ASA at concentrations of 0-3 mM and then subjected to chilling stress at 4 °C for 2 or 4 days. RESULTS: Growth, photosynthesis, biochemical alterations, oxidative damage and antioxidant enzyme activities as well as the expression of cold-responsive genes (CBF3-COR47), were monitored during the experiment...
February 15, 2018: Botanical Studies (Taipei, Taiwan)
https://www.readbyqxmd.com/read/29449862/characterization-of-transcription-factor-gene-osdrap1-conferring-drought-tolerance-in-rice
#7
Liyu Huang, Yinxiao Wang, Wensheng Wang, Xiuqin Zhao, Qiao Qin, Fan Sun, Fengyi Hu, Yan Zhao, Zichao Li, Binying Fu, Zhikang Li
HIGHLIGHTS Overexpressing and RNA interfering OsDRAP1 transgenic rice plants exhibited significantly improved and reduced drought tolerance, but accompanied with negative effects on development and yield. The dehydration responsive element binding (DREBs) genes are important transcription factors which play a crucial role in plant abiotic stress tolerances. In this study, we functionally characterized a DREB2-like gene, OsDRAP1 conferring drought tolerance (DT) in rice. OsDRAP1 , containing many cis -elements in its promoter region, was expressed in all organs (mainly expressed in vascular tissues) of rice, and induced by a variety of environmental stresses and plant hormones...
2018: Frontiers in Plant Science
https://www.readbyqxmd.com/read/29449859/latitudinal-patterns-in-european-seagrass-carbon-reserves-influence-of-seasonal-fluctuations-versus-short-term-stress-and-disturbance-events
#8
Laura M Soissons, Eeke P Haanstra, Marieke M van Katwijk, Ragnhild Asmus, Isabelle Auby, Laurent Barillé, Fernando G Brun, Patricia G Cardoso, Nicolas Desroy, Jerome Fournier, Florian Ganthy, Joxe-Mikel Garmendia, Laurent Godet, Tiago F Grilo, Petra Kadel, Barbara Ondiviela, Gloria Peralta, Araceli Puente, Maria Recio, Loic Rigouin, Mireia Valle, Peter M J Herman, Tjeerd J Bouma
Seagrass meadows form highly productive and valuable ecosystems in the marine environment. Throughout the year, seagrass meadows are exposed to abiotic and biotic variations linked to (i) seasonal fluctuations, (ii) short-term stress events such as, e.g., local nutrient enrichment, and (iii) small-scale disturbances such as, e.g., biomass removal by grazing. We hypothesized that short-term stress events and small-scale disturbances may affect seagrass chance for survival in temperate latitudes. To test this hypothesis we focused on seagrass carbon reserves in the form of starch stored seasonally in rhizomes, as these have been defined as a good indicator for winter survival...
2018: Frontiers in Plant Science
https://www.readbyqxmd.com/read/29449854/genome-wide-characterization-of-bhlh-genes-in-grape-and-analysis-of-their-potential-relevance-to-abiotic-stress-tolerance-and-secondary-metabolite-biosynthesis
#9
Pengfei Wang, Ling Su, Huanhuan Gao, Xilong Jiang, Xinying Wu, Yi Li, Qianqian Zhang, Yongmei Wang, Fengshan Ren
Basic helix-loop-helix (bHLH) transcription factors are involved in many abiotic stress responses as well as flavonol and anthocyanin biosynthesis. In grapes ( Vitis vinifera L.), flavonols including anthocyanins and condensed tannins are most abundant in the skins of the berries. Flavonols are important phytochemicals for viticulture and enology, but grape bHLH genes have rarely been examined. We identified 94 grape bHLH genes in a genome-wide analysis and performed Nr and GO function analyses for these genes...
2018: Frontiers in Plant Science
https://www.readbyqxmd.com/read/29448940/comparative-analysis-of-alfalfa-medicago-sativa-l-leaf-transcriptomes-reveals-genotype-specific-salt-tolerance-mechanisms
#10
Yunting Lei, Yuxing Xu, Christian Hettenhausen, Chengkai Lu, Guojing Shen, Cuiping Zhang, Jing Li, Juan Song, Honghui Lin, Jianqiang Wu
BACKGROUND: Soil salinity is an important factor affecting growth, development, and productivity of almost all land plants, including the forage crop alfalfa (Medicago sativa). However, little is known about how alfalfa responds and adapts to salt stress, particularly among different salt-tolerant cultivars. RESULTS: Among seven alfalfa cultivars, we found that Zhongmu-1 (ZM) is relatively salt-tolerant and Xingjiang Daye (XJ) is salt-sensitive. Compared to XJ, ZM showed slower growth under low-salt conditions, but exhibited stronger tolerance to salt stress...
February 15, 2018: BMC Plant Biology
https://www.readbyqxmd.com/read/29447453/in-silico-genome-wide-identification-and-characterization-of-glutathione-s-transferase-gene-family-in-vigna-radiata-l-wilczek
#11
Swati Vaish, Praveen Awasthi, Siddharth Tiwari, Shailesh Kumar Tiwari, Divya Gupta, Mahesh Kumar Basantani
Plant glutathione S-transferases are integral to normal plant metabolism, and biotic and abiotic stress tolerance. GST gene family has been characterized in diverse plant species using molecular biology and bioinformatics approaches. In the current study, in silico analysis identified 44 GSTs in Vigna radiata. Of the total 44 GSTs identified, chromosomal locations of 31 GSTs were confirmed. The pI value of GST proteins ranged from 5.10 to 9.40. The predicted molecular weights ranged from 13.12 to 50 kDa. Subcellular localization analysis revealed that all GSTs were predominantly localized in the cytoplasm...
February 15, 2018: Genome Génome / Conseil National de Recherches Canada
https://www.readbyqxmd.com/read/29445344/invertebrate-trehalose-6-phosphate-synthase-gene-genetic-architecture-biochemistry-physiological-function-and-potential-applications
#12
REVIEW
Bin Tang, Su Wang, Shi-Gui Wang, Hui-Juan Wang, Jia-Yong Zhang, Shuai-Ying Cui
The non-reducing disaccharide trehalose is widely distributed among various organisms. It plays a crucial role as an instant source of energy, being the major blood sugar in insects. In addition, it helps countering abiotic stresses. Trehalose synthesis in insects and other invertebrates is thought to occur via the trehalose-6-phosphate synthase (TPS) and trehalose-6-phosphate phosphatase (TPP) pathways. In many insects, the TPP gene has not been identified, whereas multiple TPS genes that encode proteins harboring TPS/OtsA and TPP/OtsB conserved domains have been found and cloned in the same species...
2018: Frontiers in Physiology
https://www.readbyqxmd.com/read/29444312/in-concert-orchestrated-changes-in-carbohydrate-homeostasis-are-critical-for-plant-abiotic-stress-tolerance
#13
Benjamin Pommerrenig, Frank Ludewig, Jelena Cvetkovic, Oliver Trentmann, Patrick A W Klemens, H Ekkehard Neuhaus
The sessile lifestyle of higher plants is accompanied by their remarkable ability to tolerate unfavourable environmental conditions. This is, because during evolution plants developed a sophisticated repertoire of molecular and metabolic reactions to cope with changing biotic and abiotic challenges. In particular, the abiotic factors light intensity and ambient temperature are characterized by altering their amplitude within comparably short periods of time and are causative for onset of dynamic plant responses...
February 10, 2018: Plant & Cell Physiology
https://www.readbyqxmd.com/read/29444308/integration-of-multi-omics-techniques-and-physiological-phenotyping-within-a-holistic-phenomics-approach-to-study-senescence-in-model-and-crop-plants
#14
Dominik K Großkinsky, Syahnada Jaya Syaifullah, Thomas Roitsch
The study of senescence in plants is complicated by diverse levels of temporal and spatial dynamics as well as the impact of external biotic and abiotic factors and crop plant management. Whereas the molecular mechanisms involved in developmentally regulated leaf senescence are very well understood, in particular in the annual model plant species Arabidopsis, senescence of other organs such as the flower, fruit, and root is much less studied as well as senescence in perennials such as trees. This review addresses the need for the integration of multi-omics techniques and physiological phenotyping into holistic phenomics approaches to dissect the complex phenomenon of senescence...
February 12, 2018: Journal of Experimental Botany
https://www.readbyqxmd.com/read/29444102/parallel-behavioral-and-morphological-divergence-in-fence-lizards-on-two-college-campuses
#15
Amanda Sparkman, Stephen Howe, Stephanie Hynes, Brooke Hobbs, Karina Handal
The spread of urban development has dramatically altered natural habitats, modifying community relationships, abiotic factors, and structural features. Animal populations living in these areas must perish, emigrate, or find ways to adjust to a suite of new selective pressures. Those that successfully inhabit the urban environment may make behavioral, physiological, and/or morphological adjustments that represent either evolutionary change and/or phenotypic plasticity. We tested for effects of urbanization on antipredator behavior and associated morphology across an urban-wild gradient in the western fence lizard (Sceloporus occidentalis) in two California counties, Santa Barbara and San Luis Obispo...
2018: PloS One
https://www.readbyqxmd.com/read/29443436/fitness-costs-of-infection-with-serratia-symbiotica-are-associated-with-greater-susceptibility-to-insecticides-in-the-pea-aphid-acyrthosiphon-pisum
#16
Marisa Skaljac, Phillipp Kirfel, Jens Grotmann, Andreas Vilcinskas
BACKGROUND: Aphids are agricultural pests that damage crops by direct feeding and by vectoring important plant viruses. Bacterial symbionts can influence aphid biology, e.g. by providing essential nutrients or facilitating adaptations to biotic and abiotic stress. RESULTS: We investigated the pea aphid (Acyrthosiphon pisum Harris) and its commonly associated secondary bacterial symbiont Serratia symbiotica to study the effect of this symbiont on host fitness and susceptibility to the insecticides imidacloprid, chlorpyrifos methyl, methomyl, cyantraniliprole and spirotetramat...
February 14, 2018: Pest Management Science
https://www.readbyqxmd.com/read/29440593/the-glucose-sensor-mdhxk1-phosphorylates-a-tonoplast-na-h-exchanger-to-improve-salt-tolerance
#17
Mei-Hong Sun, Qi-Jun Ma, Da-Gang Hu, Xiao-Ping Zhu, Chun-Xiang You, Huai-Rui Shu, Yu-Jin Hao
Glucose regulates many vital processes, including plant growth, development, metabolism, and responses to biotic and abiotic stress. However, the molecular mechanism by which glucose acts as a signal to regulate salinity tolerance remains unclear. In this study, we found that the apple (Malus domestica Borkh) glucose sensor hexokinase1 (MdHXK1) contributes to glucose-mediated salinity tolerance. A combination of split ubiquitin system, pull-down, Co-IP and BiFC assays demonstrated that MdHXK1 interacts with and phosphorylates the Na+/H+ exchanger MdNHX1 at its Ser275 residue...
February 12, 2018: Plant Physiology
https://www.readbyqxmd.com/read/29439549/enlightening-butterfly-conservation-efforts-the-importance-of-natural-lighting-for-butterfly-behavioral-ecology-and-conservation
#18
REVIEW
Brett M Seymoure
Light is arguably the most important abiotic factor for living organisms. Organisms evolved under specific lighting conditions and their behavior, physiology, and ecology are inexorably linked to light. Understanding light effects on biology could not be more important as present anthropogenic effects are greatly changing the light environments in which animals exist. The two biggest anthropogenic contributors changing light environments are: (1) anthropogenic lighting at night (i.e., light pollution); and (2) deforestation and the built environment...
February 12, 2018: Insects
https://www.readbyqxmd.com/read/29438453/the-role-of-silicon-in-plant-biology-a-paradigm-shift-in-research-approach
#19
Adam Frew, Leslie A Weston, Olivia L Reynolds, Geoff M Gurr
Background: Silicon (Si) is known to have numerous beneficial effects on plants, alleviating diverse forms of abiotic and biotic stress. Research on this topic has accelerated in recent years and revealed multiple effects of Si in a range of plant species. Available information regarding the impact of Si on plant defence, growth and development is fragmented, discipline-specific, and usually focused on downstream, distal phenomena rather than underlying effects. Accordingly, there is a growing need for studies that address fundamental metabolic and regulatory processes, thereby allowing greater unification and focus of current research across disciplines...
February 9, 2018: Annals of Botany
https://www.readbyqxmd.com/read/29438088/prohibitin-3-forms-complexes-with-isochorismate-synthase-1-to-regulate-stress-induced-salicylic-acid-biosynthesis-in-arabidopsis
#20
Aldo Luis Seguel, Joanna Jelenska, Ariel Herrera-Vásquez, Sharon K Marr, Michael B Joyce, Kelsey R Gagesch, Nadia Shakoor, Shang-Chuan Jiang, Alejandro Fonseca, Mary Wildermuth, Jean T Greenberg, Loreto Holuigue
Salicylic acid (SA) is a major defense signal in plants. In Arabidopsis thaliana, the main source of SA biosynthesis during abiotic stress (such as UV-C) or pathogen infections is a chloroplast-localized pathway. The enzyme isochorismate synthase 1 (ICS1) uses chorismate to produce isochorismate, which is subsequently converted to SA by an as yet unknown enzyme in higher plants.  We show here that ICS1 protein levels increased during UV-C stress. To identify additional proteins that play roles in SA production via regulation of ICS1, proteins that co-immunoprecipitate with ICS1 were analyzed by mass spectrometry...
February 1, 2018: Plant Physiology
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