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https://www.readbyqxmd.com/read/29453091/identification-of-mirnas-and-their-targets-in-maize-in-response-to-sugarcane-mosaic-virus-infection
#1
Zihao Xia, Zhenxing Zhao, Mingjun Li, Ling Chen, Zhiyuan Jiao, Yuanhua Wu, Tao Zhou, Weichang Yu, Zaifeng Fan
MicroRNAs (miRNAs) are endogenous non-coding small RNAs that play essential regulatory roles in plant development and environmental stress responses. Maize (Zea mays L.) is a global economically important food and forage crop. To date, a number of maize miRNAs have been identified as being involved in plant development and stress responses. However, the miRNA-mediated gene regulatory networks responsive to virus infections in maize remain largely unknown. In this study, the profiles of small RNAs in buffer- and Sugarcane mosaic virus (SCMV)-inoculated maize plants were obtained by high-throughput sequencing, respectively...
January 31, 2018: Plant Physiology and Biochemistry: PPB
https://www.readbyqxmd.com/read/29451902/an-artificial-mirna-system-reveals-that-relative-contribution-of-translational-inhibition-to-mirna-mediated-regulation-depends-on-environmental-and-developmental-factors-in-arabidopsis-thaliana
#2
Patrick von Born, Marti Bernardo-Faura, Ignacio Rubio-Somoza
Development and fitness of any organism rely on properly controlled gene expression. This is especially true for plants, as their development is determined by both internal and external cues. MicroRNAs (miRNAs) are embedded in the genetic cascades that integrate and translate those cues into developmental programs. miRNAs negatively regulate their target genes mainly post-transcriptionally through two co-existing mechanisms; mRNA cleavage and translational inhibition. Despite our increasing knowledge about the genetic and biochemical processes involved in those concurrent mechanisms, little is known about their relative contributions to the overall miRNA-mediated regulation...
2018: PloS One
https://www.readbyqxmd.com/read/29450655/transcription-factors-network-in-root-endosymbiosis-establishment-and-development
#3
REVIEW
Issa Diédhiou, Diaga Diouf
Root endosymbioses are mutualistic interactions between plants and the soil microorganisms (Fungus, Frankia or Rhizobium) that lead to the formation of nitrogen-fixing root nodules and/or arbuscular mycorrhiza. These interactions enable many species to survive in different marginal lands to overcome the nitrogen-and/or phosphorus deficient environment and can potentially reduce the chemical fertilizers used in agriculture which gives them an economic, social and environmental importance. The formation and the development of these structures require the mediation of specific gene products among which the transcription factors play a key role...
February 15, 2018: World Journal of Microbiology & Biotechnology
https://www.readbyqxmd.com/read/29449855/microrna160-modulates-plant-development-and-heat-shock-protein-gene-expression-to-mediate-heat-tolerance-in-arabidopsis
#4
Jeng-Shane Lin, Chia-Chia Kuo, I-Chu Yang, Wei-An Tsai, Yu-Hsing Shen, Chih-Ching Lin, Yi-Chen Liang, Yu-Chi Li, Yun-Wei Kuo, Yu-Chi King, Hsi-Mei Lai, Shih-Tong Jeng
Global warming is causing a negative impact on plant growth and adversely impacts on crop yield. MicroRNAs (miRNAs) are critical in regulating the expression of genes involved in plant development as well as defense responses. The effects of miRNAs on heat-stressed Arabidopsis warrants further investigation. Heat stress increased the expression of miR160 and its precursors but considerably reduced that of its targets, ARF10, ARF16 , and ARF17 . To study the roles of miR160 during heat stress, transgenic Arabidopsis plants overexpressing miR160 precursor a (160OE) and artificial miR160 (MIM160), which mimics an inhibitor of miR160, were created...
2018: Frontiers in Plant Science
https://www.readbyqxmd.com/read/29448158/despacito-the-slow-evolutionary-changes-in-plant-micrornas
#5
REVIEW
Patricia Baldrich, Aleksandra Beric, Blake C Meyers
MicroRNAs (miRNAs) are key regulators of gene expression. A handful of miRNAs are broadly conserved in land plants, while the majority are lineage specific; this review describes the processes by which new miRNAs are hypothesized to have emerged. Two major models describe miRNA origins, firstly, de novo emergence via inverted duplication of target gene fragments, and secondly, the expansion and neofunctionalization of existing miRNA families. The occasional acquisition of target sites by previously un-targeted genes adds further dynamism to the process by which miRNAs may shift roles during evolution...
February 12, 2018: Current Opinion in Plant Biology
https://www.readbyqxmd.com/read/29446655/micrornas-as-molecular-targets-of-quercetin-and-its-derivatives-underlying-their-biological-effects-a-preclinical-strategy
#6
Dan Wang, Dongxiao Sun-Waterhouse, Feng Li, Li Xin, Dapeng Li
Quercetin is a well-known flavonoid naturally occurring in most of the plant foods and is often found in the human diet. It can act as a potent antioxidant and anti-inflammatory agent, and plays significant roles in the prevention of various chronic diseases. Recent findings revealed that quercetin could affect metabolic traits by regulating certain transcription factors or key proteins involved in cellular signal pathways and influencing the expression of functional genes along with related regulatory pathway(s), and that microRNAs (miRNAs) circulate in body fluids and are involved in post-transcriptional gene silencing and regulation of gene expression in various biological processes including development, proliferation, metabolism and inflammation...
February 15, 2018: Critical Reviews in Food Science and Nutrition
https://www.readbyqxmd.com/read/29445170/brm270-inhibits-cancer-stem-cell-maintenance-via-microrna-regulation-in-chemoresistant-a549-lung-adenocarcinoma-cells
#7
Taeho Kwon, Nisansala Chandimali, Do Luong Huynh, Jiao Jiao Zhang, Nameun Kim, Yesol Bak, Do-Young Yoon, Dae-Yeul Yu, Jae Cheol Lee, Meeta Gera, Mrinmoy Ghosh, Yang Ho Park, Dong Kee Jeong
Chemotherapy is a standard treatment for non-small-cell lung cancer (NSCLC). However, the dose-limiting toxicity of drugs and the development of chemoresistance are major clinical challenges to successful management of NSCLC. Asian traditional medicine is gaining global attention as a non-toxic alternative to chemotherapy. BRM270 is an extract formulated from seven Asian medicinal plants that has been shown to inhibit tumor cell proliferation in diverse cancer types. We previously demonstrated that BRM270 suppresses tumorigenesis by negatively regulating nuclear factor-κB signaling in multidrug-resistant cancer stem cells (CSCs)...
February 14, 2018: Cell Death & Disease
https://www.readbyqxmd.com/read/29442579/changes-in-cryphonectria-parasitica-populations-affects-natural-biological-control-of-chestnut-blight
#8
Marin Ježić, Jelena Mlinarec, Rosemary Vuković, Zorana Katanić, Ljiljana Krstin, Lucija Nuskern, Igor Poljak, Marilena Idžojtić, Mirta Tkalec, Mirna Curkovic-Perica
Invasive species, especially plant pathogens have a potential to completely eradicate native plant species and remodel landscapes. Tripartite interaction among sweet chestnut, Castanea sativa, chestnut blight-causing invasive fungus, Cryphonectria parasitica, and a hyperparasitic virus, Cryphonectria parasitica hypovirus 1 (CHV1) were studied in two populations. The number of different vegetative compatibility (vc) types of C. parasitica more than doubled over the ten years, while the hypovirulence incidence dropped in one population, and slightly increased in the other one...
February 14, 2018: Phytopathology
https://www.readbyqxmd.com/read/29440670/characterization-of-conserved-and-novel-micrornas-in-lilium-lancifolium-thunb-by-high-throughput-sequencing
#9
Xiangfeng He, Awraris Getachew Shenkute, Wenhe Wang, Shufa Xu
MicroRNAs (miRNAs) are among the class of noncoding small RNA molecules and play a crucial role in post-transcriptional regulation in plants. Although Lilium is one of the most popular ornamental flowers worldwide, however, there is no report on miRNAs identification. In the present study, therefore, miRNAs and their targets were identified from flower, leaf, bulblet and bulb of Lilium lancifolium Thunb. by high-throughput sequencing and bioinformatics analysis. In this study, a total of 38 conserved miRNAs belonging to 17 miRNA families and 44 novel miRNAs were identified...
February 13, 2018: Scientific Reports
https://www.readbyqxmd.com/read/29438895/piriformospora-indica-cell-wall-extract-as-the-best-elicitor-for-asiaticoside-production-in-centella-asiatica-l-urban-evidenced-by-morphological-physiological-and-molecular-analyses
#10
S Jisha, P R Gouri, K N Anith, K K Sabu
Vascular plants synthesise a multitude of organic molecules or phytochemicals, referred to as "secondary metabolites". These molecules are involved in a variety of roles in the life span of plants, ranging from structural ones to protection. Centella asiatica (L.) Urban has probably been used since prehistoric times and has been reported to have been used for various medicinal and cosmetic purposes. The plant contains several active constituents, of which the most important is asiaticoside, a triterpenoid. Asiaticoside content in C...
February 7, 2018: Plant Physiology and Biochemistry: PPB
https://www.readbyqxmd.com/read/29437988/mac3a-and-mac3b-two-core-subunits-of-the-mos4-associated-complex-positively-influence-mirna-biogenesis
#11
Shengjun Li, Kan Liu, Bangjun Zhou, Mu Li, Shuxin Zhang, Lirong Zeng, Chi Zhang, Bin Yu
MAC3A and MAC3B are conserved U-box containing proteins in eukaryotes. They are subunits of the MOS4-associated complex (MAC) that plays essential roles in plant immunity and development in Arabidopsis. However, their functional mechanisms remain elusive. Here we show that Arabidopsis thaliana MAC3A and MAC3B act redundantly in microRNA (miRNA) biogenesis. Lack of both MAC3A and MAC3B in the mac3b mac3b double mutant reduces the accumulation of miRNAs, causing elevated transcript levels of miRNA targets. mac3a mac3b also decreases the levels of primary miRNA transcripts (pri-miRNAs)...
February 5, 2018: Plant Cell
https://www.readbyqxmd.com/read/29435938/transgene-like-animal-models-using-intronic-micrornas
#12
Shi-Lung Lin, Shin-Ju E Chang, Shao-Yao Ying
Transgenic animal models are valuable tools for testing gene functions and drug mechanisms in vivo. They are also the best similitude for a human body for etiological and pathological research of diseases. All pharmaceutically developed medicines must be proven to be safe and effective in animals before approval by the Food and Drug Administration (FDA) to be used in clinical trials. To this end, the transgenic animal models of diseases serve as the front line of drug evaluation. However, there is currently no transgenic animal model for microRNA (miRNA)-related research...
2018: Methods in Molecular Biology
https://www.readbyqxmd.com/read/29435044/soft-shelled-turtle-peptide-modulates-microrna-profile-in-human-gastric-cancer-ags-cells
#13
Yi-Chen Wu, Xiang Liu, Jiu-Li Wang, Xiang-Liu Chen, Lan Lei, Jing Han, You-Shui Jiang, Zhi-Qiang Ling
Cancer prevention using natural micronutrition on epigenetic mechanisms primarily revolves around plant extracts. However, the role of macronutrition, including animal peptides, on epigenetic modification in cancer has been elusive. In traditional Chinese medicine, the soft-shelled turtle has a long-history of being a functional food that strengthens immunity through unknown mechanisms. The present study aimed to investigate the impact of soft-shelled turtle peptide on microRNA (miRNA) expression in gastric cancer (GC) cells and to analyze the potential anticancer mechanisms for GC...
March 2018: Oncology Letters
https://www.readbyqxmd.com/read/29434615/comparative-transcriptome-profiles-of-near-isogenic-hexaploid-wheat-lines-differing-for-effective-alleles-at-the-2dl-fhb-resistance-qtl
#14
Chiara Biselli, Paolo Bagnaresi, Primetta Faccioli, Xinkun Hu, Margaret Balcerzak, Maria G Mattera, Zehong Yan, Therese Ouellet, Luigi Cattivelli, Giampiero Valè
Fusarium head blight (FHB), caused by the fungus Fusarium graminearum , represents one of the major wheat diseases worldwide, determining severe yield losses and reduction of grain quality due to the accumulation of mycotoxins. The molecular response associated with the wheat 2DL FHB resistance QTL was mined through a comprehensive transcriptomic analysis of the early response to F. graminearum infection, at 3 days post-inoculation, in spikelets and rachis. The analyses were conducted on two near isogenic lines (NILs) differing for the presence of the 2DL QTL (2-2618, resistant 2DL+ and 2-2890, susceptible null)...
2018: Frontiers in Plant Science
https://www.readbyqxmd.com/read/29434609/frg3-a-target-of-slmir482e-3p-provides-resistance-against-the-fungal-pathogen-fusarium-oxysporum-in-tomato
#15
Hui-Min Ji, Min Zhao, Ying Gao, Xin-Xin Cao, Hui-Ying Mao, Yi Zhou, Wen-Yu Fan, Katherine A Borkovich, Shou-Qiang Ouyang, Peng Liu
The vast majority of plant disease resistance (R) genes encode nucleotide binding site-leucine-rich repeat (NBS-LRR) proteins, which specifically determine the plant immune response and have been demonstrated to be targets of several microRNA (miRNA) families. The fungus Fusarium oxysporum f. sp. lycopersici (FOL) causes vascular wilt disease in tomato worldwide. Here, we explored a possible role for FGR3 in tomato defense against FOL. FRG3 is a predicted NBS-LRR like gene that is targeted by slmiR482e-3p, a member of slmiR482 miRNA family...
2018: Frontiers in Plant Science
https://www.readbyqxmd.com/read/29428797/identification-characterization-and-expression-analysis-of-pigeonpea-mirnas-in-response-to-fusarium-wilt
#16
Khalid Hussain, Kanak Mungikar, Abhijeet Kulkarni, Avinash Kamble
Upon confrontation with unfavourable conditions, plants invoke a very complex set of biochemical and physiological reactions and alter gene expression patterns to combat the situations. MicroRNAs (miRNAs), a class of small non-coding RNA, contribute extensively in regulation of gene expression through translation inhibition or degradation of their target mRNAs during such conditions. Therefore, identification of miRNAs and their targets holds importance in understanding the regulatory network triggered during stress...
February 8, 2018: Gene
https://www.readbyqxmd.com/read/29426405/bta-mir-2411-attenuates-bovine-viral-diarrhea-virus-replication-via-directly-suppressing-pelota-protein-in-madin-darby-bovine-kidney-cells
#17
Huijun Shi, Qiang Fu, Shengnan Li, Xinyan Hu, Ruixin Tian, Gang Yao, Hongqiong Zhao, Jinquan Wang
MicroRNAs (miRNAs) are endogenous ∼22 nt noncoding RNAs that control the translation initiation and stability of target genes in a sequence-specific manner and, thus, play important regulatory roles in animals and plants. Homologs of Dom34, called Pelota or PELO, are broadly conserved in eukaryotes and archaea. Biochemical and genetic studies indicate that eukaryotic Dom34/Pelota plays an important role in cell division, differentiation of germline stem cells, and stem cell self-renewal by controlling the expression of specific genes at the translational level...
February 2018: Veterinary Microbiology
https://www.readbyqxmd.com/read/29422942/rna-binding-protein-immunoprecipitation-as-a-tool-to-investigate-plant-mirna-processing-interference-by-regulatory-proteins-of-diverse-origin
#18
F E Marmisolle, M L García, C A Reyes
Background: Due to the nature of viral RNA genomes, RNA viruses depend on many RNA-binding proteins (RBP) of viral and host origin for replication, dissemination and evasion of host RNA degradation pathways. Some viruses interfere with the microRNA (miRNA) pathway to generate better fitness. The development of an adjusted, reliable and sensitive ribonucleoprotein immunoprecipitation (RIP) assay is needed to study the interaction between RBP of different origin (including viral origin) and miRNA precursors...
2018: Plant Methods
https://www.readbyqxmd.com/read/29419801/plant-responses-to-pathogen-attack-small-rnas-in-focus
#19
REVIEW
Waqar Islam, Ali Noman, Muhammad Qasim, Liande Wang
Small RNAs (sRNA) are a significant group of gene expression regulators for multiple biological processes in eukaryotes. In plants, many sRNA silencing pathways produce extensive array of sRNAs with specialized roles. The evidence on record advocates for the functions of sRNAs during plant microbe interactions. Host sRNAs are reckoned as mandatory elements of plant defense. sRNAs involved in plant defense processes via different pathways include both short interfering RNA (siRNA) and microRNA (miRNA) that actively regulate immunity in response to pathogenic attack via tackling pathogen-associated molecular patterns (PAMPs) and other effectors...
February 8, 2018: International Journal of Molecular Sciences
https://www.readbyqxmd.com/read/29418002/long-distance-rna-movement
#20
REVIEW
Julia Kehr, Friedrich Kragler
Contents I. II. III. IV. V. References SUMMARY: In higher plants, small noncoding RNAs and large messenger RNA (mRNA) molecules are transported between cells and over long distances via the phloem. These large macromolecules are thought to get access to the sugar-conducting phloem vessels via specialized plasmodesmata (PD). Analyses of the phloem exudate suggest that all classes of RNA molecules, including silencing-induced RNAs (siRNAs), micro RNAs (miRNAs), transfer RNAs (tRNAs), ribosomal RNA (rRNAs) and mRNAs, are transported via the vasculature to distant tissues...
February 8, 2018: New Phytologist
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