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abiotic stress

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https://www.readbyqxmd.com/read/28437768/glomeromycota-communities-survive-extreme-levels-of-metal-toxicity-in-an-orphan-mining-site
#1
I Sánchez-Castro, V Gianinazzi-Pearson, J C Cleyet-Marel, E Baudoin, D van Tuinen
Abandoned tailing basins and waste heaps of orphan mining sites are of great concern since extreme metal contamination makes soil improper for any human activity and is a permanent threat for nearby surroundings. Although spontaneous revegetation can occur, the process is slow or unsuccessful and rhizostabilisation strategies to reduce dispersal of contaminated dust represent an option to rehabilitate such sites. This requires selection of plants tolerant to such conditions, and optimization of their fitness and growth...
April 21, 2017: Science of the Total Environment
https://www.readbyqxmd.com/read/28437432/genome-wide-identification-and-expression-analysis-of-calcium%C3%A2-dependent-protein-kinase-and-its-related-kinase-gene-families-in-melon-cucumis-melo-l
#2
Haifei Zhang, Chunhua Wei, Xiaozhen Yang, Hejie Chen, Yongchao Yang, Yanling Mo, Hao Li, Yong Zhang, Jianxiang Ma, Jianqiang Yang, Xian Zhang
The calcium-dependent protein kinase (CDPK) is a ser/thr protein kinase that plays vital roles in plant growth, development, and responses to multiple stresses. Despite an important member of the stress responsive gene family, little is known about the evolutionary history and expression patterns of CDPK genes in melon. Herein, a total of 18 CDPK genes and 7 CDPK-related protein kinases (CRK) genes were identified in the melon genome via bioinformatic analysis, which were unevenly distributed across eleven chromosomes with an apparent exception for chromosome 3...
2017: PloS One
https://www.readbyqxmd.com/read/28435105/organ-specific-proteomics-of-soybean-seedlings-under-flooding-and-drought-stresses
#3
Xin Wang, Ehsaneh Khodadadi, Baratali Fakheri, Setsuko Komatsu
Organ-specific analyses enrich the understanding of plant growth and development under abiotic stresses. To elucidate the cellular responses in soybean seedlings exposed to flooding and drought stresses, organ-specific analysis was performed using a gel-free/label-free proteomic technique. Physiological analysis indicated that enzyme activities of alcohol dehydrogenase and delta-1-pyrroline-5-carboxylate synthase were markedly increased in leaf and root of plants treated with 6days of flooding and drought stresses, respectively...
April 18, 2017: Journal of Proteomics
https://www.readbyqxmd.com/read/28434155/nitrogen-fertility-and-abiotic-stresses-management-in-cotton-crop-a-review
#4
Aziz Khan, Daniel Kean Yuen Tan, Muhammad Zahir Afridi, Honghai Luo, Shahbaz Atta Tung, Mir Ajab, Shah Fahad
This review outlines nitrogen (N) responses in crop production and potential management decisions to ameliorate abiotic stresses for better crop production. N is a primary constituent of the nucleotides and proteins that are essential for life. Production and application of N fertilizers consume huge amounts of energy, and excess is detrimental to the environment. Therefore, increasing plant N use efficiency (NUE) is important for the development of sustainable agriculture. NUE has a key role in crop yield and can be enhanced by controlling loss of fertilizers by application of humic acid and natural polymers (hydrogels), having high water-holding capacity which can improve plant performance under field conditions...
April 22, 2017: Environmental Science and Pollution Research International
https://www.readbyqxmd.com/read/28431570/a-relative-quantitative-methylation-sensitive-amplified-polymorphism-msap-method-for-the-analysis-of-abiotic-stress
#5
Piotr T Bednarek, Renata Orłowska, Agnieszka Niedziela
BACKGROUND: We present a new methylation-sensitive amplified polymorphism (MSAP) approach for the evaluation of relative quantitative characteristics such as demethylation, de novo methylation, and preservation of methylation status of CCGG sequences, which are recognized by the isoschizomers HpaII and MspI. We applied the technique to analyze aluminum (Al)-tolerant and non-tolerant control and Al-stressed inbred triticale lines. The approach is based on detailed analysis of events affecting HpaII and MspI restriction sites in control and stressed samples, and takes advantage of molecular marker profiles generated by EcoRI/HpaII and EcoRI/MspI MSAP platforms...
April 21, 2017: BMC Plant Biology
https://www.readbyqxmd.com/read/28431521/a-reference-floral-transcriptome-of-sexual-and-apomictic-paspalum-notatum
#6
Juan Pablo A Ortiz, Santiago Revale, Lorena A Siena, Maricel Podio, Luciana Delgado, Juliana Stein, Olivier Leblanc, Silvina C Pessino
BACKGROUND: Paspalum notatum Flügge is a subtropical grass native to South America, which includes sexual diploid and apomictic polyploid biotypes. In the past decade, a number of apomixis-associated genes were discovered in this species through genetic mapping and differential expression surveys. However, the scarce information on Paspalum sequences available in public databanks limited annotations and functional predictions for these candidates. RESULTS: We used a long-read 454/Roche FLX+ sequencing strategy to produce robust reference transcriptome datasets from florets of sexual and apomictic Paspalum notatum genotypes and delivered a list of transcripts showing differential representation in both reproductive types...
April 21, 2017: BMC Genomics
https://www.readbyqxmd.com/read/28431355/genome-wide-identification-and-analysis-of-the-populus-trichocarpa-tify-gene-family
#7
Yue Wang, Feng Pan, Danmei Chen, Wenyuan Chu, Huanlong Liu, Yan Xiang
The plant-specific TIFY proteins are widely present in land plants and play the important roles in the regulation of plant stress-responses. In this study, we carried out a bioinformatics analysis of TIFY genes in Populus trichocarpa by determining the phylogenetic relationship, chromosomal location and gene structure and expression profiles analysis under stresses. The 24 TIFY genes were identified and classified into four subfamilies (ZML, JAZ, PPD and TIFY). The 24 TIFY genes were irregularly located on 13 of the 19 chromosomes; ten gene pairs were involved in large-scale interchromosomal segmental duplication events; we identified 17 collinear TIFY gene pairs in the Populus trichocarpa genome...
April 13, 2017: Plant Physiology and Biochemistry: PPB
https://www.readbyqxmd.com/read/28431134/floral-transitions-in-wheat-and-barley-interactions-between-photoperiod-abiotic-stresses-and-nutrient-status
#8
Leonard Gol, Filipa Tomé, Maria von Korff
The timing of plant reproduction has a large impact on yield in crop plants. Reproductive development in temperate cereals comprises two major developmental transitions. During spikelet initiation, the identity of the shoot meristem switches from the vegetative to the reproductive stage and spikelet primordia are formed on the apex. Subsequently, floral morphogenesis is initiated, a process strongly affected by environmental variation. Recent studies in cereal grasses have suggested that this later phase of inflorescence development controls floret survival and abortion, and is therefore crucial for yield...
April 20, 2017: Journal of Experimental Botany
https://www.readbyqxmd.com/read/28428808/reference-genes-for-normalization-of-qpcr-assays-in-sugarcane-plants-under-water-deficit
#9
Larissa Mara de Andrade, Michael Dos Santos Brito, Rafael Fávero Peixoto Junior, Paulo Eduardo Ribeiro Marchiori, Paula Macedo Nóbile, Alexandre Palma Boer Martins, Rafael Vasconcelos Ribeiro, Silvana Creste
BACKGROUND: Sugarcane (Saccharum spp.) is the main raw material for sugar and ethanol production. Among the abiotic stress, drought is the main one that negatively impact sugarcane yield. Although gene expression analysis through quantitative PCR (qPCR) has increased our knowledge about biological processes related to drought, gene network that mediates sugarcane responses to water deficit remains elusive. In such scenario, validation of reference gene is a major requirement for successful analyzes involving qPCR...
2017: Plant Methods
https://www.readbyqxmd.com/read/28428797/silicon-regulates-antioxidant-activities-of-crop-plants-under-abiotic-induced-oxidative-stress-a-review
#10
REVIEW
Yoon-Ha Kim, Abdul L Khan, Muhammad Waqas, In-Jung Lee
Silicon (Si) is the second most abundant element in soil, where its availability to plants can exhilarate to 10% of total dry weight of the plant. Si accumulation/transport occurs in the upward direction, and has been identified in several crop plants. Si application has been known to ameliorate plant growth and development during normal and stressful conditions over past two-decades. During abiotic (salinity, drought, thermal, and heavy metal etc) stress, one of the immediate responses by plant is the generation of reactive oxygen species (ROS), such as singlet oxygen ((1)O2), superoxide ([Formula: see text]), hydrogen peroxide (H2O2), and hydroxyl radicals (OH), which cause severe damage to the cell structure, organelles, and functions...
2017: Frontiers in Plant Science
https://www.readbyqxmd.com/read/28428793/transcriptomics-targeted-metabolomics-and-gene-expression-of-blackberry-leaves-and-fruits-indicate-flavonoid-metabolic-flux-from-leaf-to-red-fruit
#11
Enrique Gutierrez, Ana García-Villaraco, José A Lucas, Ana Gradillas, F Javier Gutierrez-Mañero, Beatriz Ramos-Solano
Blackberries (Rubus spp.) are among the high added value food products relevant for human health due to the increasing evidence of the beneficial effects of polyphenols, which are very abundant in these fruits. Interestingly, these compounds also play a role on plant physiology, being especially relevant their role in plant defense against biotic and abiotic stress. Hence, we hypothesize that since blackberry fruits have high amounts of flavonols and anthocyanins, leaves would also have high amounts of these compounds, and can be studied as a source of active molecules; furthermore, leaf synthesis would support their high contents in fruits...
2017: Frontiers in Plant Science
https://www.readbyqxmd.com/read/28426278/hop3-a-new-regulator-of-the-er-stress-response-in-arabidopsis-with-possible-implications-in-plant-development-and-response-to-biotic-and-abiotic-stresses
#12
Nuria Fernández-Bautista, Lourdes Fernández-Calvino, Alfonso Muñoz, M Mar Castellano
HOPs (heat shock protein 70 (HSP70)-heat shock protein 90 (HSP90) organizing proteins) are a highly conserved family of cytosolic cochaperones. In a recent study we showed that HOP3, one member of the HOP family in Arabidopsis, plays an essential role during endoplasmic reticulum (ER) stress in plants. Interestingly, we also demonstrated that AtHOP3 interacts with binding immunoglobulin protein (BiP), a major ER-resident chaperone. All these data suggest that HOP3 could assist BiP in protein folding in the ER...
April 20, 2017: Plant Signaling & Behavior
https://www.readbyqxmd.com/read/28425127/manipulation-of-glyoxalase-pathway-confers-tolerance-to-multiple-stresses-in-rice
#13
Brijesh K Gupta, Khirod K Sahoo, Ajit Ghosh, Amit K Tripathi, Khalid Anwar, Priyanka Das, Anil K Singh, Ashwani Pareek, Sudhir K Sopory, Sneh L Singla-Pareek
Crop plants face a multitude of diverse abiotic and biotic stresses in the farmers' fields. Although there now exists a considerable knowledge of the underlying mechanisms of response to individual stresses, the cross-talk between response pathways to various abiotic and biotic stresses remains enigmatic. Here, we investigated if the cytotoxic metabolite methylglyoxal (MG), excess of which is generated as a common consequence of many abiotic and biotic stresses, may serve as a key molecule linking responses to diverse stresses...
April 20, 2017: Plant, Cell & Environment
https://www.readbyqxmd.com/read/28424730/melatonin-improves-waterlogging-tolerance-of-malus-baccata-linn-borkh-seedlings-by-maintaining-aerobic-respiration-photosynthesis-and-ros-migration
#14
Xiaodong Zheng, Jingzhe Zhou, Dun-Xian Tan, Na Wang, Lin Wang, Dongqian Shan, Jin Kong
Waterlogging, one of the notorious abiotic stressors, retards the growth of apple plants and reduces their production. Thus, it is an urgent agenda for scientists to identify the suitable remedies for this problem. In the current study, we found that melatonin significantly improved the tolerance of apple seedlings against waterlogging stress. This was indicated by the reduced chlorosis and wilting of the seedlings after melatonin applications either by leaf spray or root irrigation. The mechanisms involve in that melatonin functions to maintain aerobic respiration, preserves photosynthesis and reduces oxidative damage of the plants which are under waterlogging stress...
2017: Frontiers in Plant Science
https://www.readbyqxmd.com/read/28423944/emerging-roles-of-long-non-coding-rnas-in-plant-response-to-biotic-and-abiotic-stresses
#15
Naghmeh Nejat, Nitin Mantri
Spectacular progress in high-throughput transcriptome sequencing and expression profiling using next-generation sequencing technologies have recently revolutionized molecular biology and allowed massive advances in identifying the genomic regions and molecular mechanisms underlying transcriptional regulation of growth, development, and stress response. Through recent research, non-coding RNAs, in particular long non-coding RNAs, have emerged as key regulators of transcription in eukaryotes. Long non-coding RNAs are vastly heterogeneous groups of RNAs that execute a broad range of essential roles in various biological processes at the epigenetic, transcriptional, and post-transcriptional levels...
April 20, 2017: Critical Reviews in Biotechnology
https://www.readbyqxmd.com/read/28421378/transcriptome-based-identification-of-the-desiccation-response-genes-in-marine-red-algae-pyropia-tenera-rhodophyta-and-enhancement-of-abiotic-stress-tolerance-by-ptdrg2-in-chlamydomonas
#16
Sungoh Im, Ha-Nul Lee, Hyun Shin Jung, Sunghwan Yang, Eun-Jeong Park, Mi Sook Hwang, Won-Joong Jeong, Dong-Woog Choi
Pyropia tenera (Kjellman) are marine red algae that grow in the intertidal zone and lose more than 90% of water during hibernal low tides every day. In order to identify the desiccation response gene (DRG) in P. tenera, we generated 1,444,210 transcriptome sequences using the 454-FLX platform from the gametophyte under control and desiccation conditions. De novo assembly of the transcriptome reads generated 13,170 contigs, covering about 12 Mbp. We selected 1160 differentially expressed genes (DEGs) in response to desiccation stress based on reads per kilobase per million reads (RPKM) expression values...
April 18, 2017: Marine Biotechnology
https://www.readbyqxmd.com/read/28421096/regulation-of-banana-phytoene-synthase-mapsy-expression-characterization-and-their-modulation-under-various-abiotic-stress-conditions
#17
Navneet Kaur, Ashutosh Pandey, Shivani, Prateek Kumar, Pankaj Pandey, Atul K Kesarwani, Shrikant S Mantri, Praveen Awasthi, Siddharth Tiwari
Phytoene synthase (PSY) is a key regulatory enzyme of carotenoid biosynthesis pathway in plants. The present study examines the role of PSY in carotenogenesis and stress management in banana. Germplasm screening of 10 Indian cultivars showed that Nendran (3011.94 μg/100 g dry weight) and Rasthali (105.35 μg/100 g dry weight) contained the highest and lowest amounts of β-carotene, respectively in ripe fruit-pulp. Nendran ripe pulp also showed significantly higher antioxidant activity as compared to Rasthali...
2017: Frontiers in Plant Science
https://www.readbyqxmd.com/read/28421085/expression-of-arabidopsis-shn1-in-indian-mulberry-morus-indica-l-increases-leaf-surface-wax-content-and-reduces-post-harvest-water-loss
#18
R S Sajeevan, Karaba N Nataraja, K S Shivashankara, N Pallavi, D S Gurumurthy, M B Shivanna
Mulberry (Morus species) leaf is the sole food for monophagous silkworms, Bombyx mori L. Abiotic stresses such as drought, salinity, and high temperature, significantly decrease mulberry productivity and post-harvest water loss from leaves influence silkworm growth and cocoon yield. Leaf surface properties regulate direct water loss through the cuticular layer. Leaf surface waxes, contribute for cuticular resistance and protect mesophyll cells from desiccation. In this study we attempted to overexpress AtSHN1, a transcription factor associated with epicuticular wax biosynthesis to increase leaf surface wax load in mulberry...
2017: Frontiers in Plant Science
https://www.readbyqxmd.com/read/28420608/the-molecular-mechanisms-of-plant-plasma-membrane-intrinsic-proteins-trafficking-and-stress-response
#19
Wang Xing, Zhang Jilong, Feng Xiuxiu, Li Hongjie, Zhang Genfa
Plasma membrane intrinsic proteins (PIPs) are plant channel proteins located on the plasma membrane. PIPs transfer water, CO2 and small uncharged solutes through the plasma membrane. PIPs have high selectivity to substrates, suggestive of a central role in maintaining cellular water balance. The expression, activity and localization of PIPs are regulated at the transcriptional and post-translational levels, and also affected by environmental factors. Numerous studies indicate that the expression patterns and localizations of PIPs can change in response to abiotic stresses...
April 20, 2017: Yi Chuan, Hereditas
https://www.readbyqxmd.com/read/28419348/litchi-fruit-lcnac1-is-a-target-of-lcmyc2-and-regulator-of-fruit-senescence-through-its-interaction-with-lcwrky1
#20
Guoxiang Jiang, Huiling Yan, Fuwang Wu, Dandan Zhang, Wei Zeng, Hongxia Qu, Feng Chen, Li Tan, Xuewu Duan, Yueming Jiang
Senescence is a key factor resulting in deterioration of non-climacteric fruit. NAC transcription factors are important regulators in plant development and abiotic stress responses, yet little information regarding the role of NACs in regulating non-climacteric fruit senescence is available. In this study, we cloned 13 NAC genes from litchi (Litchi chinensis) fruit, and analyzed subcellular localization and expression profiles of these genes during postharvest natural and low-temperature-delayed senescence...
April 13, 2017: Plant & Cell Physiology
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