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https://www.readbyqxmd.com/read/28820483/a-microsomal-proteomics-view-of-h%C3%A2-o%C3%A2-and-aba-dependent-responses
#1
May Alqurashi, Ludivine Thomas, Chris Gehring, Claudius Marondedze
The plant hormone abscisic acid (ABA) modulates a number of plant developmental processes and responses to stress. In planta, ABA has been shown to induce reactive oxygen species (ROS) production through the action of plasma membrane-associated nicotinamide adenine dinucleotide phosphate (NADPH)-oxidases. Although quantitative proteomics studies have been performed to identify ABA- or hydrogen peroxide (H₂O₂)-dependent proteins, little is known about the ABA- and H₂O₂-dependent microsomal proteome changes...
August 18, 2017: Proteomes
https://www.readbyqxmd.com/read/28819246/transcriptome-analysis-reveals-plant-response-to-colchicine-treatment-during-on-chromosome-doubling
#2
Kai Zhou, Paige Fleet, Eviatar Nevo, Xinquan Zhang, Genlou Sun
Colchicine was commonly used to artificially double chromosomes while the transcriptome changes in colchicine treated plants has rarely been characterized. To understand the molecular mechanism of colchicine on chromosome doubling, we characterized transcriptome data of diploid orchardgrass root after colchicine treatment. Our results showed that 3381 of differentially expressed genes (DEGs) were mainly affected by water stress, 1258 DEGs that were expressed significantly in sample DacR5tr but not in DacR5ck were considered to be mainly affected by colchicine and combination of water and colchicine...
August 17, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28818467/mathematical-modelling-and-analysis-of-the-brassinosteroid-and-gibberellin-signalling-pathways-and-their-interactions
#3
Henry R Allen, Mariya Ptashnyk
The plant hormones brassinosteroid (BR) and gibberellin (GA) have important roles in a wide range of processes involved in plant growth and development. In this paper we derive and analyse new mathematical models for the BR signalling pathway and for the crosstalk between the BR and GA signalling pathways. To analyse the effects of spatial heterogeneity of the signalling processes, along with spatially-homogeneous ODE models we derive coupled PDE-ODE systems modelling the temporal and spatial dynamics of molecules involved in the signalling pathways...
August 14, 2017: Journal of Theoretical Biology
https://www.readbyqxmd.com/read/28814265/a-genome-wide-transcriptome-map-of-pistachio-pistacia-vera-l-provides-novel-insights-into-salinity-related-genes-and-marker-discovery
#4
Maryam Moazzzam Jazi, Seyed Mahdi Seyedi, Esmaeil Ebrahimie, Mansour Ebrahimi, Gianluca De Moro, Christopher Botanga
BACKGROUND: Pistachio (Pistacia vera L.) is one of the most important commercial nut crops worldwide. It is a salt-tolerant and long-lived tree, with the largest cultivation area in Iran. Climate change and subsequent increased soil salt content have adversely affected the pistachio yield in recent years. However, the lack of genomic/global transcriptomic sequences on P. vera impedes comprehensive researches at the molecular level. Hence, whole transcriptome sequencing is required to gain insight into functional genes and pathways in response to salt stress...
August 17, 2017: BMC Genomics
https://www.readbyqxmd.com/read/28811017/improved-methodology-for-analysis-of-multiple-phytohormones-using-sequential-magnetic-solid-phase-extraction-coupled-with-liquid-chromatography-tandem-mass-spectrometry
#5
Xiao-Tong Luo, Bao-Dong Cai, Xi Chen, Yu-Qi Feng
Phytohormones are special small molecules that play important role in plant growth and development at trace levels. Quantification of multiple phytohormones will be great helpful for researches about cross-talks that plant hormones regulate the responses of plants against both biotic and abiotic stresses by means of synergistic or antagonistic interactions. In the current study, we developed a method for profiling of phytohormones in one small sample, including indole-3-acetic acid, abscisic acid, jasmonic acid, gibberellins, cytokinins and brassinosteroids...
August 29, 2017: Analytica Chimica Acta
https://www.readbyqxmd.com/read/28808767/identification-and-expression-analysis-of-micrornas-during-ovule-development-in-rice-oryza-sativa-by-deep-sequencing
#6
Ya Wu, Liyu Yang, Meiling Yu, Jianbo Wang
MicroRNA (miRNA) expression profiles during rice ovule development revealed the possible miRNA-mediated regulation between ovule sporophytic tissue and female gametophyte and the involvement of miRNAs in programmed cell death. MiRNAs are 20-24-nucleotide small RNAs that play key roles in the regulation of many growth and developmental processes in plants. Rice ovule development comprises a series of biological events, which are regulated by complex molecular mechanisms. To gain insight into miRNA-mediated regulation of rice ovule development, Illumina sequencing was used to examine the expression of miRNAs from the megaspore mother cell meiosis stage to the fertilized ovule stage...
August 14, 2017: Plant Cell Reports
https://www.readbyqxmd.com/read/28808654/genome-wide-identification-and-transcriptional-expression-analysis-of-cucumber-superoxide-dismutase-sod-family-in-response-to-various-abiotic-stresses
#7
Yong Zhou, Lifang Hu, Hao Wu, Lunwei Jiang, Shiqiang Liu
Superoxide dismutase (SOD) proteins are widely present in the plant kingdom and play important roles in different biological processes. However, little is known about the SOD genes in cucumber. In this study, night SOD genes were identified from cucumber (Cucumis sativus) using bioinformatics-based methods, including 5 Cu/ZnSODs, 3 FeSODs, and 1 MnSOD. Gene structure and motif analysis indicated that most of the SOD genes have relatively conserved exon/intron arrangement and motif composition. Phylogenetic analyses with SODs from cucumber and several other species revealed that these SOD proteins can be traced back to two ancestral SODs before the divergence of monocot and dicot plants...
2017: International Journal of Genomics
https://www.readbyqxmd.com/read/28808380/identification-and-analysis-of-jasmonate-pathway-genes-in-coffea-canephora-robusta-coffee-by-in-silico-approach
#8
Kosaraju Bharathi, H L Sreenath
BACKGROUND: Coffea canephora is the commonly cultivated coffee species in the world along with Coffea arabica. Different pests and pathogens affect the production and quality of the coffee. Jasmonic acid (JA) is a plant hormone which plays an important role in plants growth, development, and defense mechanisms, particularly against insect pests. The key enzymes involved in the production of JA are lipoxygenase, allene oxide synthase, allene oxide cyclase, and 12-oxo-phytodienoic reductase...
July 2017: Pharmacognosy Magazine
https://www.readbyqxmd.com/read/28805882/plant-array-chip-for-the-germination-and-growth-screening-of-arabidopsis-thaliana
#9
Youn-Hee Park, Nayoung Lee, Giltsu Choi, Je-Kyun Park
A screening process for the germination and growth of seed is generally required for plant research. Such a repetitive screening process is costly and time-consuming, and its bulky setup requires a lot of space. In particular, the control of the variables, such as light, nutrients, hormones and temperature, is difficult due to the limited space for incubation. In addition, small seeds such as Arabidopsis thaliana are difficult to handle as they are hundreds of microns in diameter and require a more precisely controllable screening environment...
August 14, 2017: Lab on a Chip
https://www.readbyqxmd.com/read/28798491/phytochromobilin-deficiency-impairs-sugar-metabolism-through-the-regulation-of-cytokinin-and-auxin-signaling-in-tomato-fruits
#10
Ricardo Ernesto Bianchetti, Aline Bertinatto Cruz, Bruna Soares Oliveira, Diego Demarco, Eduardo Purgatto, Lázaro Eustáquio Pereira Peres, Magdalena Rossi, Luciano Freschi
Phytochomes and plant hormones have been emerging as important regulators of fleshy fruit biology and quality traits; however, the relevance of phytochrome-hormonal signaling crosstalk in controlling fruit development and metabolism remains elusive. Here, we show that the deficiency in phytochrome chromophore phytochromobilin (PΦB) biosynthesis inhibits sugar accumulation in tomato (Solanum lycopersicum) fruits by transcriptionally downregulating sink- and starch biosynthesis-related enzymes, such as cell-wall invertases, sucrose transporters and ADP-glucose pyrophosphorylases...
August 10, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28776104/heat-or-cold-priming-induced-cross-tolerance-to-abiotic-stresses-in-plants-key-regulators-and-possible-mechanisms
#11
REVIEW
Mohammad Anwar Hossain, Zhong-Guang Li, Tahsina Sharmin Hoque, David J Burritt, Masayuki Fujita, Sergi Munné-Bosch
Plants growing under field conditions are constantly exposed, either simultaneously or sequentially, to more than one abiotic stress factor. Plants have evolved sophisticated sensory systems to perceive a number of stress signals that allow them to activate the most adequate response to grow and survive in a given environment. Recently, cross-stress tolerance (i.e. tolerance to a second, strong stress after a different type of mild primary stress) has gained attention as a potential means of producing stress-resistant crops to aid with global food security...
August 4, 2017: Protoplasma
https://www.readbyqxmd.com/read/28769960/transcriptome-analysis-of-the-sm-mediated-hypersensitive-response-to-stemphylium-lycopersici-in-tomato
#12
Huanhuan Yang, Tingting Zhao, Jingbin Jiang, Xiuling Chen, He Zhang, Guan Liu, Dongye Zhang, Chong Du, Songbo Wang, Xiangyang Xu, Jingfu Li
Gray leaf spot disease caused by Stemphylium lycopersici is a major disease in cultivated tomato plants and threatens tomato-growing areas worldwide. Sm is a single dominant gene that confers resistance to tomato gray leaf spot disease agent. However, the underlying molecular mechanism remains unclear. Here, resistant (cv. Motelle, containing the Sm gene) and susceptible (cv. Moneymaker) plants were inoculated with virulent Stemphylium lycopersici isolate at a time point at which both cultivars showed a strong response to S...
2017: Frontiers in Plant Science
https://www.readbyqxmd.com/read/28769957/aba-mediated-stomatal-response-in-regulating-water-use-during-the-development-of-terminal-drought-in-wheat
#13
REVIEW
Renu Saradadevi, Jairo A Palta, Kadambot H M Siddique
End-of-season drought or "terminal drought," which occurs after flowering, is considered the most significant abiotic stress affecting crop yields. Wheat crop production in Mediterranean-type environments is often exposed to terminal drought due to decreasing rainfall and rapid increases in temperature and evapotranspiration during spring when wheat crops enter the reproductive stage. Under such conditions, every millimeter of extra soil water extracted by the roots benefits grain filling and yield and improves water use efficiency (WUE)...
2017: Frontiers in Plant Science
https://www.readbyqxmd.com/read/28767675/large-scale-identification-of-gossypium-hirsutum-genes-associated-with-verticillium-dahliae-by-comparative-transcriptomic-and-reverse-genetics-analysis
#14
Wenwei Zhang, Huachong Zhang, Kai Liu, Guiliang Jian, Fangjun Qi, Ning Si
Verticillium wilt is a devastating disease of cotton, which is caused by the soil-borne fungus Verticillium dahliae (V. dahliae). Although previous studies have identified some genes or biological processes involved in the interaction between cotton and V. dahliae, its underlying molecular mechanism remains unclear, especially in G. hirsutum. In the present study, we obtained an overview of transcriptome characteristics of resistant upland cotton (G. hirsutum) after V. dahliae infection at 24 h post-inoculation (hpi) via a high-throughput RNA-sequencing technique...
2017: PloS One
https://www.readbyqxmd.com/read/28767129/the-role-of-euglena-gracilis-paramylon-in-modulating-xylem-hormone-levels-photosynthesis-and-water-use-efficiency-in-solanum-lycopersicum-l
#15
Andrea Scartazza, Piero Picciarelli, Lorenzo Mariotti, Maurizio Curadi, Laura Barsanti, Paolo Gualtieri
β-1,3-glucans such as paramylon act as elicitors in plants, modifying the hormonal levels and the physiological responses. Plant hormones affect all phases of the plant life cycle and their responses to environmental stresses, both biotic and abiotic. The aim of this study was to investigate the effects of a root treatment with Euglena gracilis paramylon on xylem hormonal levels, photosynthetic performance and dehydration stress in tomato (Solanum lycopersicum L.). Paramylon granules were processed to obtain the linear fibrous structures capable to interact with tomato cell membrane...
August 2, 2017: Physiologia Plantarum
https://www.readbyqxmd.com/read/28761178/heterodera-schachtii-tyrosinase-like-protein-a-novel-nematode-effector-modulating-plant-hormone-homeostasis
#16
Samer S Habash, Zoran S Radakovic, Radomira Vankova, Shahid Siddique, Petre Dobrev, Cynthia Gleason, Florian M W Grundler, Abdelnaser Elashry
The beet cyst nematode Heterodera schachtii causes major yield losses in sugar beet. Understanding the interaction between H. schachtii and its host plant is important for developing a sustainable management system. Nematode effectors play a crucial role in initializing and sustaining successful parasitism. In our study, we identified a gene (Hs-Tyr) encoding a tyrosinase functional domain (PF00264). We describe Hs-Tyr as a novel nematode effector. Hs-Tyr is localized in the nematode esophageal gland. Up-regulation of its expression coincided with the parasitic developmental stages of the nematode...
July 31, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28761087/ethylene-an-early-marker-of-systemic-inflammation-in-humans
#17
Laurent M Paardekooper, Geert van den Bogaart, Matthijs Kox, Ilse Dingjan, Anne H Neerincx, Maura B Bendix, Martin Ter Beest, Frans J M Harren, Terence Risby, Peter Pickkers, Nandor Marczin, Simona M Cristescu
Ethylene is a major plant hormone mediating developmental processes and stress responses to stimuli such as infection. We show here that ethylene is also produced during systemic inflammation in humans and is released in exhaled breath. Traces of ethylene were detected by laser spectroscopy both in vitro in isolated blood leukocytes exposed to bacterial lipopolysaccharide (LPS) as well as in vivo following LPS administration in healthy volunteers. Exposure to LPS triggers formation of ethylene as a product of lipid peroxidation induced by the respiratory burst...
July 31, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28758909/exogenous-gr24-alleviates-cadmium-toxicity-by-reducing-cadmium-uptake-in-switchgrass-panicum-virgatum-seedlings
#18
Zhenglan Tai, Xinqiang Yin, Zhigang Fang, Gaoling Shi, Laiqing Lou, Qingsheng Cai
Strigolactones (SLs) are classified into plant hormones, playing a key role as a mediator of plant growth in response to several abiotic stresses, including drought and salinity. However, the role of SLs in cadmium (Cd)-induced stress to plants is still unknown. The physiological responses of switchgrass (Panicum virgatum) stressed in 10 μmol L(-1) Cd to exogenous synthetic SLs analog, GR24 were studied in hydroponics. The Cd stress significantly caused the adverse effects on plant growth and root morphology, inhibited photosynthesis, but boosted lipid peroxidation of Switchgrass seedlings...
July 29, 2017: International Journal of Environmental Research and Public Health
https://www.readbyqxmd.com/read/28758833/the-differentiated-localized-rice-ethylene-receptors-osers1-and-osetr2-and-their-potential-role-during-submergence
#19
Manda Yu, Chi Ping Yau, Wing Kin Yip
Ethylene is gaseous plant hormone that controls a variety of physiological activities. OsERS1 and OsETR2 are major ethylene receptors in rice that have been reported to have different regulatory functions. The GFP fused N-terminus of OsERS1 and OsETR2 showed differentially localization patterns when transiently expressed in onion epidermal cells. Base on the results, we suggested that OsERS1 could be localized to plasma membranes, whereas OsETR2 could be localized to the endoplasmic reticulum. Furthermore, instead of the constitutive expression profile of OsERS1, OsETR2 is differentially expressed in seedlings of light/dark-grown conditions, submergence or exogenous ethylene treatments...
July 31, 2017: Plant Signaling & Behavior
https://www.readbyqxmd.com/read/28754917/integrated-regulatory-network-reveals-the-early-salt-tolerance-mechanism-of-populus-euphratica
#20
Jiafei Chen, Jin Zhang, Jianjun Hu, Wenwei Xiong, Chunguang Du, Mengzhu Lu
Salinization is one of the major factors that threaten the existence of plants worldwide. Populus euphratica has been deemed to be a promising candidate for stress response research because of its high capacity to tolerate extreme salt stress. We carried out a genome-wide transcriptome analysis to identify the differentially expressed genes (DEGs) response to salt shock and elucidate the early salt tolerance mechanisms in P. euphratica. Both hierarchical clustering and DEG analysis demonstrated a predominant variation from time-course rather than NaCl intensity within 24 hours salt shock...
July 28, 2017: Scientific Reports
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