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https://www.readbyqxmd.com/read/28527016/chemical-derivatization-of-metabolite-mass-profiling-of-the-recretohalophyte-aeluropus-lagopoides-revealing-salt-stress-tolerance-mechanism
#1
Murali Krishna Paidi, Parinita Agarwal, Prashant More, Pradeep K Agarwal
Plants are the primary producers of food for human being. Their intracellular environment alternation is influenced by abiotic stress factors such as drought, heat and soil salinity. Aeluropus lagopoides is a strong halophyte that grows with ease under high saline muddy banks of creeks of Gujarat, India. To study the response of salinity on metabolite changes in Aeluropus, three treatments, i.e. control, salinity and recovery, were selected for both shoot and root tissue. The cytosolic metabolite state was analysed by molecular chemical derivatization gas chromatography mass profiling...
May 19, 2017: Marine Biotechnology
https://www.readbyqxmd.com/read/28525284/intrinsically-disordered-proteins-as-important-players-during-desiccation-stress-of-the-soybean-radicles
#2
Yun Liu, Jiahui Wu, Nan Sun, Chengjian Tu, Xiaoying Shi, Hua Cheng, Simu Liu, Shuiming Li, Yong Wang, Yizhi Zheng, Vladimir N Uversky
Intrinsically disordered proteins (IDPs) play a variety of important physiological roles in all living organisms. However, there is no comprehensive analysis of the abundance of IDPs associated with environmental stress in plants. Here, we show that a set of heat-stable proteins (i.e., proteins that do not denature after boiling at 100°C for 10 min) was present in R0mm and R15mm radicles (i.e., before the radicle emergence and the 15 mm long radicles) of soybean (Glycine max) seeds. This set of 795 iTRAQ-quantified heat-stable proteins contained a high proportion of wholly or highly disordered proteins (15%), which was significantly higher than that estimated for the whole soybean proteome containing 55,787 proteins (9%)...
May 19, 2017: Journal of Proteome Research
https://www.readbyqxmd.com/read/28522415/behavioural-adaptation-of-the-rice-leaf-folder-cnaphalocrocis-medinalis-to-short-term-heat-stress
#3
Muhammad Adnan Bodlah, Ling-Ling Gu, Ye Tan, Xiang-Dong Liu
Under ongoing climate warming, both the degree and number of high-temperature events in summer may increase, and behavioural adaptation is an important ecological strategy employed by insects to cope with such events. The rice leaf folder, Cnaphalocrocis medinalis Güenée, is a serious insect pest of rice fields in summer. Population outbreaks have become more frequent in the last ten years. In addition to adult migration, rice leaf folders are thought to have other thermal adaptations. Therefore, the behaviours of larval and adult rice leaf folders, such as leaf folding (making shelter) and habitat selection for pupae and eggs, were observed on rice plants under heat stress...
May 15, 2017: Journal of Insect Physiology
https://www.readbyqxmd.com/read/28510204/microarray-meta-analysis-to-explore-abiotic-stress-specific-gene-expression-patterns-in-arabidopsis
#4
Po-Chih Shen, Ai-Ling Hour, Li-Yu Daisy Liu
BACKGROUND: Abiotic stresses are the major limiting factors that affect plant growth, development, yield and final quality. Deciphering the underlying mechanisms of plants' adaptations to stresses using few datasets might overlook the different aspects of stress tolerance in plants, which might be simultaneously and consequently operated in the system. Fortunately, the accumulated microarray expression data offer an opportunity to infer abiotic stress-specific gene expression patterns through meta-analysis...
December 2017: Botanical Studies (Taipei, Taiwan)
https://www.readbyqxmd.com/read/28509353/engineering-heat-tolerance-in-potato-by-temperature-dependent-expression-of-a-specific-allele-of-heat-shock-cognate-70
#5
Almudena Trapero-Mozos, Wayne L Morris, Laurence J M Ducreux, Karen McLean, Jennifer Stephens, Lesley Torrance, Glenn J Bryan, Robert D Hancock, Mark A Taylor
For many commercial potato cultivars, tuber yield is optimal at average day time temperatures in the range of 14-22⁰C. Further rises in ambient temperature can reduce or completely inhibit potato tuber production, with damaging consequences for both producer and consumer. The aim of this study was to use a genetic screen based on a model tuberisation assay to identify Quantitative Trait Loci (QTL) associated with enhanced tuber yield. A candidate gene encoding HSc70 was identified within one of the three QTL intervals associated with elevated yield in a Phureja-Tuberosum hybrid diploid potato population (06H1)...
May 16, 2017: Plant Biotechnology Journal
https://www.readbyqxmd.com/read/28508929/untargeted-metabolomic-analysis-of-tomato-pollen-development-and-heat-stress-response
#6
Marine J Paupière, Florian Müller, Hanjing Li, Ivo Rieu, Yury M Tikunov, Richard G F Visser, Arnaud G Bovy
Pollen development metabolomics. Developing pollen is among the plant structures most sensitive to high temperatures, and a decrease in pollen viability is often associated with an alteration of metabolite content. Most of the metabolic studies of pollen have focused on a specific group of compounds, which limits the identification of physiologically important metabolites. To get a better insight into pollen development and the pollen heat stress response, we used a liquid chromatography-mass spectrometry platform to detect secondary metabolites in pollen of tomato (Solanum lycopersicum L...
May 16, 2017: Plant Reproduction
https://www.readbyqxmd.com/read/28508070/decoupling-of-microbial-carbon-nitrogen-and-phosphorus-cycling-in-response-to-extreme-temperature-events
#7
Maria Mooshammer, Florian Hofhansl, Alexander H Frank, Wolfgang Wanek, Ieda Hämmerle, Sonja Leitner, Jörg Schnecker, Birgit Wild, Margarete Watzka, Katharina M Keiblinger, Sophie Zechmeister-Boltenstern, Andreas Richter
Predicted changes in the intensity and frequency of climate extremes urge a better mechanistic understanding of the stress response of microbially mediated carbon (C) and nutrient cycling processes. We analyzed the resistance and resilience of microbial C, nitrogen (N), and phosphorus (P) cycling processes and microbial community composition in decomposing plant litter to transient, but severe, temperature disturbances, namely, freeze-thaw and heat. Disturbances led temporarily to a more rapid cycling of C and N but caused a down-regulation of P cycling...
May 2017: Science Advances
https://www.readbyqxmd.com/read/28507559/the-dnaj-gene-family-in-pepper-capsicum-annuum-l-comprehensive-identification-characterization-and-expression-profiles
#8
FangFei Fan, Xian Yang, Yuan Cheng, Yunyan Kang, Xirong Chai
The DnaJ proteins which function as molecular chaperone played critical roles in plant growth and development and response to heat stress (HS) and also called heat shock protein 40 based on molecular weight. However, little was reported on this gene family in pepper. Recently, the release of the whole pepper genome provided an opportunity for identifying putative DnaJ homologous. In this study, a total of 76 putative pepper DnaJ genes (CaDnaJ01 to CaDnaJ76) were identified using bioinformatics methods and classified into five groups by the presence of the complete three domains (J-domain, zinc finger domain, and C-terminal domain)...
2017: Frontiers in Plant Science
https://www.readbyqxmd.com/read/28507554/large-differences-in-gene-expression-responses-to-drought-and-heat-stress-between-elite-barley-cultivar-scarlett-and-a-spanish-landrace
#9
Carlos P Cantalapiedra, María J García-Pereira, María P Gracia, Ernesto Igartua, Ana M Casas, Bruno Contreras-Moreira
Drought causes important losses in crop production every season. Improvement for drought tolerance could take advantage of the diversity held in germplasm collections, much of which has not been incorporated yet into modern breeding. Spanish landraces constitute a promising resource for barley breeding, as they were widely grown until last century and still show good yielding ability under stress. Here, we study the transcriptome expression landscape in two genotypes, an outstanding Spanish landrace-derived inbred line (SBCC073) and a modern cultivar (Scarlett)...
2017: Frontiers in Plant Science
https://www.readbyqxmd.com/read/28505092/molecular-characterization-and-expression-profiling-of-tomato-grf-transcription-factor-family-genes-in-response-to-abiotic-stresses-and-phytohormones
#10
Khadiza Khatun, Arif Hasan Khan Robin, Jong-In Park, Ujjal Kumar Nath, Chang Kil Kim, Ki-Byung Lim, Ill Sup Nou, Mi-Young Chung
Growth regulating factors (GRFs) are plant-specific transcription factors that are involved in diverse biological and physiological processes, such as growth, development and stress and hormone responses. However, the roles of GRFs in vegetative and reproductive growth, development and stress responses in tomato (Solanum lycopersicum) have not been extensively explored. In this study, we characterized the 13 SlGRF genes. In silico analysis of protein motif organization, intron-exon distribution, and phylogenetic classification confirmed the presence of GRF proteins in tomato...
May 13, 2017: International Journal of Molecular Sciences
https://www.readbyqxmd.com/read/28505088/1-4-naphthoquinone-triggers-nematode-lethality-by-inducing-oxidative-stress-and-activating-insulin-igf-signaling-pathway-in-caenorhabditis-elegans
#11
Jia Wang, Guangzhi Zeng, Xiaobing Huang, Zhe Wang, Ninghua Tan
Plant-parasitic nematodes are destructive pathogens causing enormous economic losses worldwide. With the withdrawal of fumigants, organophosphates and carbamates, pathogenic nematode control is more difficult. Phytochemicals are the plant secondary metabolites and are friendly for men and the environment. For developing new nematocidal candidates, we screened 790 phytochemicals using the model organism Caenorhabditis elegans and found 10 active compounds, 3 of which were further evaluated for their inhibitory activities against egg hatching of C...
May 13, 2017: Molecules: a Journal of Synthetic Chemistry and Natural Product Chemistry
https://www.readbyqxmd.com/read/28500894/mercury-induced-oxidative-stress-dna-damage-and-activation-of-antioxidative-system-and-hsp70-induction-in-duckweed-lemna-minor
#12
Tingting Zhang, Qianqian Lu, Chunlei Su, Yaru Yang, Dan Hu, Qinsong Xu
Mercury uptake and its effects on physiology, biochemistry and genomic stability were investigated in Lemna minor after 2 and 6d of exposure to 0-30μM Hg. The accumulation of Hg increased in a concentration- and duration-dependent manner, and was positively correlated with the leaf damage. Oxidative stress after Hg exposure was evidenced in L. minor by a significant decrease in photosynthetic pigments, an increase in malondialdehyde and lipoxygenase activities (total enzyme activity and isoenzymes activity)...
May 10, 2017: Ecotoxicology and Environmental Safety
https://www.readbyqxmd.com/read/28491321/thermotolerance-capacities-of-native-and-exotic-coastal-plants-will-lead-to-changes-in-species-composition-under-increased-heat-waves
#13
Kris French, Sharon A Robinson, Jodie Lia
With an increase in the frequency and intensity of extreme heat events, plants are likely to reach their thermal limits and show slower growth or increased mortality. We investigated differences amongst coastal native and invasive shrubs and grasses to investigate if particular species might be more at risk in the future. Using an ecologically relevant experimental set of heat waves over a month, we assessed changes in biomass and photosynthetic efficiency in a laboratory setting using 25 coastal Australian species divided into native and exotic shrubs, and native and exotic grasses...
2017: Conservation Physiology
https://www.readbyqxmd.com/read/28488107/long-term-perceptions-of-outdoor-thermal-environments-in-an-elementary-school-in-a-hot-humid-climate
#14
Wen-Mei Shih, Tzu-Ping Lin, Ning-Xin Tan, Mu-Hsien Liu
Previous studies on thermal comfort in school environments have focused more on indoor thermal environments than outdoor ones, thus providing a limited understanding of occupants' long-term thermal perceptions. Taiwan is located in a subtropical region, where it can be stiflingly hot outside in summer. This highlights the need to ensure proper thermal comfort on campus. In the present study, thermal environment parameters were measured and collected in several outdoor spaces of an elementary school in southern Taiwan...
May 10, 2017: International Journal of Biometeorology
https://www.readbyqxmd.com/read/28487861/genome-wide-identification-of-bzip-family-genes-involved-in-drought-and-heat-stresses-in-strawberry-fragaria-vesca
#15
Xiao-Long Wang, Xinlu Chen, Tian-Bao Yang, Qunkang Cheng, Zong-Ming Cheng
Basic leucine zipper (bZIP) genes are known to play a crucial role in response to various processes in plant as well as abiotic or biotic stress challenges. We have performed an identification and characterization of 50 bZIP genes across the woodland strawberry (Fragaria vesca) genome, which were divided into 10 clades according to the phylogenetic relationship of the strawberry bZIP proteins with those in Arabidopsis and rice. Five categories of intron patterns were observed within basic and hinge regions of the bZIP domains...
2017: International Journal of Genomics
https://www.readbyqxmd.com/read/28486558/temperature-during-conidiation-affects-stress-tolerance-pigmentation-and-trypacidin-accumulation-in-the-conidia-of-the-airborne-pathogen-aspergillus-fumigatus
#16
Daisuke Hagiwara, Kanae Sakai, Satoshi Suzuki, Myco Umemura, Toshihiko Nogawa, Naoki Kato, Hiroyuki Osada, Akira Watanabe, Susumu Kawamoto, Tohru Gonoi, Katsuhiko Kamei
Asexual spores (conidia) are reproductive structures that play a crucial role in fungal distribution and survival. As fungal conidia are, in most cases, etiological agents of plant diseases and fungal lung disease, their stress resistance and interaction with their hosts have drawn increasing attention. In the present study, we investigated whether environmental temperature during conidiation affects the stress tolerance of the conidia of the human pathogenic fungus Aspergillus fumigatus. Conidia from a 25°C culture showed a lower tolerance to heat (60°C) and oxidative (H2O2) stresses and a marked resistance to ultraviolet radiation exposure, compared with those produced at 37 and 45°C...
2017: PloS One
https://www.readbyqxmd.com/read/28484792/the-stay-green-trait-and-phytohormone-signaling-networks-in-plants-under-heat-stress
#17
REVIEW
Mostafa Abdelrahman, Magdi El-Sayed, Sudisha Jogaiah, David J Burritt, Lam-Son Phan Tran
The increasing demand for food and the heavy yield losses in primary crops due to global warming mean that there is an urgent need to improve food security. Therefore, understanding how plants respond to heat stress and its consequences, such as drought and increased soil salinity, has received much attention in plant science community. Plants exhibit stress tolerance, escape or avoidance via adaptation and acclimatization mechanisms. These mechanisms rely on a high degree of plasticity in their cellular metabolism, in which phytohormones play an important role...
May 8, 2017: Plant Cell Reports
https://www.readbyqxmd.com/read/28481372/evaluation-of-occupation-hot-exposure-in-industrial-workplaces-in-a-subtropical-country
#18
Yu-Chiao Yang, Ming-Chi Wei, Show-Jen Hong
OBJECTIVES: The objective of this study has been to evaluate the occupational heat exposure of 12 workers at 5 plants in a subtropical country. MATERIAL AND METHODS: The heat stresses and strain on workers in 5 plants were assessed by the International Organization for Standardization (ISO) 7243 index (wet bulb globe temperature - WBGT) and the ISO 7933 index (maximum allowable exposure time - D<sub>lim</sub>). RESULTS: Results indicated that 42% of the subjects (5 workers) surpassed the WBGT limits...
May 8, 2017: International Journal of Occupational Medicine and Environmental Health
https://www.readbyqxmd.com/read/28474472/analysis-of-brassica-oleracea-early-stage-abiotic-stress-responses-reveals-tolerance-in-multiple-crop-types-and-for-multiple-sources-of-stress
#19
Andrew M Beacham, Paul Hand, David A C Pink, James M Monaghan
BACKGROUND: Brassica oleracea includes a number of important crop types such as cabbage, cauliflower, broccoli and kale. Current climate conditions and weather patterns are causing significant losses in these crops, meaning that new cultivars with improved tolerance of one or more abiotic stress types must be sought. We assayed genetically fixed B. oleracea lines belonging to a Diversity Fixed Foundation Set (DFFS) for their response to seedling stage-imposed drought, flood, salinity, heat and cold stress...
May 5, 2017: Journal of the Science of Food and Agriculture
https://www.readbyqxmd.com/read/28474118/genome-wide-analysis-identifies-chickpea-cicer-arietinum-heat-stress-transcription-factors-hsfs-responsive-to-heat-stress-at-the-pod-development-stage
#20
Parameswaran Chidambaranathan, Prasanth Tej Kumar Jagannadham, Viswanathan Satheesh, Deshika Kohli, Santosh Halasabala Basavarajappa, Bharadwaj Chellapilla, Jitendra Kumar, Pradeep Kumar Jain, R Srinivasan
The heat stress transcription factors (Hsfs) play a prominent role in thermotolerance and eliciting the heat stress response in plants. Identification and expression analysis of Hsfs gene family members in chickpea would provide valuable information on heat stress responsive Hsfs. A genome-wide analysis of Hsfs gene family resulted in the identification of 22 Hsf genes in chickpea in both desi and kabuli genome. Phylogenetic analysis distinctly separated 12 A, 9 B, and 1 C class Hsfs, respectively. An analysis of cis-regulatory elements in the upstream region of the genes identified many stress responsive elements such as heat stress elements (HSE), abscisic acid responsive element (ABRE) etc...
May 4, 2017: Journal of Plant Research
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