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https://www.readbyqxmd.com/read/28222174/slmapk3-enhances-tolerance-to-tomato-yellow-leaf-curl-virus-tylcv-by-regulating-salicylic-acid-and-jasmonic-acid-signaling-in-tomato-solanum-lycopersicum
#1
Yunzhou Li, Lei Qin, Jingjing Zhao, Tayeb Muhammad, Hehe Cao, Hailiang Li, Yan Zhang, Yan Liang
Several recent studies have reported on the role of mitogen-activated protein kinase (MAPK3) in plant immune responses. However, little is known about how MAPK3 functions in tomato (Solanum lycopersicum L.) infected with tomato yellow leaf curl virus (TYLCV). There is also uncertainty about the connection between plant MAPK3 and the salicylic acid (SA) and jasmonic acid (JA) defense-signaling pathways. The results of this study indicated that SlMAPK3 participates in the antiviral response against TYLCV. Tomato seedlings were inoculated with TYLCV to investigate the possible roles of SlMAPK1, SlMAPK2, and SlMAPK3 against this virus...
2017: PloS One
https://www.readbyqxmd.com/read/28220135/differential-gene-expression-analysis-in-polygonum-minus-leaf-upon-24-h-of-methyl-jasmonate-elicitation
#2
Reyhaneh Rahnamaie-Tajadod, Kok-Keong Loke, Hoe-Han Goh, Normah M Noor
Polygonum minus is an herbal plant that grows in Southeast Asian countries and traditionally used as medicine. This plant produces diverse secondary metabolites such as phenolic compounds and their derivatives, which are known to have roles in plant abiotic and biotic stress responses. Methyl jasmonate (MeJA) is a plant signaling molecule that triggers transcriptional reprogramming in secondary metabolism and activation of defense responses against many biotic and abiotic stresses. However, the effect of MeJA elicitation on the genome-wide expression profile in the leaf tissue of P...
2017: Frontiers in Plant Science
https://www.readbyqxmd.com/read/28218974/molecular-cloning-bioinformatics-analysis-and-transcriptional-profiling-of-jaz1-and-jaz2-from-salvia-miltiorrhiza
#3
Yangyun Zhou, Xun Zhou, Qing Li, Junfeng Chen, Ying Xiao, Lei Zhang, Wansheng Chen
Production of major effective metabolites, tanshinones and lithospermic acid B (LAB), was dramatically enhanced by exogenous jasmonate (JA) treatment in Salvia miltiorrhiza. However, the molecular mechanism of such metabolic activation in S. miltiorrhiza has not been elucidated yet. Here, we focused on jasmonate ZIM-domain (JAZ) proteins that act as repressors of JA signaling. Open reading frames of two novel genes, SmJAZ1 and SmJAZ2, from S. miltiorrhiza were amplified according to the annotation of S. miltiorrhiza transcriptome...
January 2017: Biotechnology and Applied Biochemistry
https://www.readbyqxmd.com/read/28214727/a-new-strategy-to-enhance-the-biosynthesis-of-trans-resveratrol-by-overexpressing-stilbene-synthase-gene-in-elicited-vitis-vinifera-cell-cultures
#4
Mingyu Chu, M A Pedreño, Nuria Alburquerque, Lydia Faize, Lorenzo Burgos, Lorena Almagro
In this work, transgenic lines of suspension cultured cells of Vitis vinifera cv. Monastrell containing the plasmid pMOG800-sts have been obtained. The cell growth of these transgenic cell lines decreased slightly as compared to non-transgenic suspension cultured cells, while cell viability was not affected. In addition, the elicitation with cyclodextrins and methyl jasmonate enhanced the production of trans-resveratrol, observing the highest levels of this compound in sts-expressing transgenic Vitis suspension cultured cells with the sts expression cassette in the forwards orientation...
February 8, 2017: Plant Physiology and Biochemistry: PPB
https://www.readbyqxmd.com/read/28214444/the-boosted-biomass-and-lipid-accumulation-in-chlorella-vulgaris-by-supplementation-of-synthetic-phytohormone-analogs
#5
Tingting Liu, Fei Liu, Chao Wang, Zhenyao Wang, Yuqin Li
This study attempted at maximizing biomass and lipid accumulation in Chlorella vulgaris by supplementation of natural abscisic acid (ABA) or synthetic 2,4-dichlorophenoxyacetic acid (2,4-D) and 1-naphthaleneacetic acid (NAA) hormone analogs. Amongst three tested additives, NAA-treatment performed remarkable promoting effect on cell growth and lipid biosynthesis. The favorable lipid productivity (418.6mg/L/d) of NAA-treated cells showed 1.48 and 2.24 times more than that of 2,4-D and ABA. NAA-treatment also positively modified the proportions of saturated (C16:0 and C18:0) and monounsaturated fatty acids (C18:1) which were prone to high-quality biofuels-making...
February 7, 2017: Bioresource Technology
https://www.readbyqxmd.com/read/28211480/visualisation-of-abscisic-acid-and-12-oxo-phytodienoic-acid-in-immature-phaseolus-vulgaris-l-seeds-using-desorption-electrospray-ionisation-imaging-mass-spectrometry
#6
Hirofumi Enomoto, Takuya Sensu, Kei Sato, Futoshi Sato, Thanai Paxton, Emi Yumoto, Koji Miyamoto, Masashi Asahina, Takao Yokota, Hisakazu Yamane
The plant hormone abscisic acid (ABA) and the jasmonic acid related-compound 12-oxo-phytodienoic acid (OPDA) play crucial roles in seed development, dormancy, and germination. However, a lack of suitable techniques for visualising plant hormones has restricted the investigation of their biological mechanisms. In the present study, desorption electrospray ionisation-imaging mass spectrometry (DESI-IMS), a powerful tool for visualising metabolites in biological tissues, was used to visualise ABA and OPDA in immature Phaseolus vulgaris L...
February 17, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28211173/methyl-jasmonate-ameliorates-testosterone-propionate-induced-prostatic-hyperplasia-in-castrated-wistar-rats
#7
Olubukola Oyebimpe Akanni, Olusoji John Abiola, Oluwatosin Adekunle Adaramoye
Benign prostate hyperplasia (BPH) is a progressive disease that is related to age. Known therapeutic agents used in the treatment of BPH are associated with toxicity. Therefore, chemoprevention could be an effective approach. We investigated the ameliorative effects of methyl jasmonate (MeJA) in testosterone propionate (TP)-induced BPH in castrated rats. Castration was performed by removing both testes through the scrotum sack under ketamine anesthesia. Rats were assigned into seven groups of seven animals each: non-castrated control, castrated control, castrated rats that received TP, castrated rats that received TP and MeJA, castrated rats that received TP and finasteride, castrated rats that received MeJA, and castrated rats that received finasteride...
February 16, 2017: Phytotherapy Research: PTR
https://www.readbyqxmd.com/read/28209457/metabolomic-approach-reveals-the-biochemical-mechanisms-underlying-drought-stress-tolerance-in-thyme
#8
Parviz Moradi, Brian Ford-Lloyd, Jeremy Pritchard
Thyme as a perennial herb has been recognized globally for its antimicrobial, antiseptic and spasmolytic effects. In this investigation, we have used non-targeted metabolite and volatile profiling combined with the morpho-physiological parameters in order to understand the responses at the metabolite and physiological level in drought sensitive and tolerant thyme plant populations. The results at the metabolic level identified the significantly affected metabolites. Significant metabolites belonging to different chemical classes consisting amino acids, carbohydrates, organic acids and lipids have been compared in tolerant and sensitive plants...
February 13, 2017: Analytical Biochemistry
https://www.readbyqxmd.com/read/28205316/novel-polymeric-monolith-materials-with-a-%C3%AE-cyclodextrin-graphene-composite-for-the-highly-selective-extraction-of-methyl-jasmonate
#9
Xinhong Yu, Xu Ling, Li Zou, Zilin Chen
A novel polymeric monolith column with a β-cyclodextrins-graphene composite was prepared for extraction of methyl jasmonate. A simple, sensitive and effective polymeric monolith microextraction with high-performance liquid chromatography method has been presented for the determination. To carry out the best microextraction efficiency, several parameters such as sample flow rate, sample volume and sample pH value were systematically optimized. In addition, the method validation showed a wide linear range of 5-2000 ng mL(-) ¹, with a good linearity and the low limits of detection for methyl jasmonate...
February 16, 2017: Journal of Separation Science
https://www.readbyqxmd.com/read/28202014/defensive-changes-in-maize-leaves-induced-by-feeding-of-mediterranean-corn-borer-larvae
#10
Rogelio Santiago, Ana Cao, Ana Butrón, Ana López-Malvar, Víctor M Rodríguez, Germán V Sandoya, Rosa A Malvar
BACKGROUND: Plants can respond to insect attack via defense mechanisms that reduce insect performance. In this study, we examined the effects of several treatments applied to two maize genotypes (one resistant, one susceptible) on the subsequent growth and survival of Sesamia nonagrioides Lef. (Mediterranean corn borer, MCB) larvae. The treatments were infestation with MCB larvae, application of MCB regurgitant upon wounding, wounding alone, or exposure to methyl jasmonate, and they were applied at the V6-V8 stage of maize development...
February 15, 2017: BMC Plant Biology
https://www.readbyqxmd.com/read/28201612/jasmonate-regulates-leaf-senescence-and-tolerance-to-cold-stress-crosstalk-with-other-phytohormones
#11
Yanru Hu, Yanjuan Jiang, Xiao Han, Houping Wang, Jinjing Pan, Diqiu Yu
No abstract text is available yet for this article.
February 12, 2017: Journal of Experimental Botany
https://www.readbyqxmd.com/read/28197166/ectopic-expression-of-the-wild-grape-wrky-transcription-factor-vqwrky52-in-arabidopsis-thaliana-enhances-resistance-to-the-biotrophic-pathogen-powdery-mildew-but-not-to-the-necrotrophic-pathogen-botrytis-cinerea
#12
Xianhang Wang, Rongrong Guo, Mingxing Tu, Dejun Wang, Chunlei Guo, Ran Wan, Zhi Li, Xiping Wang
WRKY transcription factors are known to play important roles in plant responses to biotic stresses. We previously showed that the expression of the WRKY gene, VqWRKY52, from Chinese wild Vitis quinquangularis was strongly induced 24 h post inoculation with powdery mildew. In this study, we analyzed the expression levels of VqWRKY52 following treatment with the defense related hormones salicylic acid (SA) and methyl jasmonate, revealing that VqWRKY52 was strongly induced by SA but not JA. We characterized the VqWRKY52 gene, which encodes a WRKY III gene family member, and found that ectopic expression in Arabidopsis thaliana enhanced resistance to powdery mildew and Pseudomonas syringae pv...
2017: Frontiers in Plant Science
https://www.readbyqxmd.com/read/28193162/genome-wide-characterization-of-jasmonate-zim-domain-transcription-repressors-in-wheat-triticum-aestivum-l
#13
Yukun Wang, Linyi Qiao, Jianfang Bai, Peng Wang, Wenjing Duan, Shaohua Yuan, Guoliang Yuan, Fengting Zhang, Liping Zhang, Changping Zhao
BACKGROUND: The JASMONATE-ZIM DOMAIN (JAZ) repressor family proteins are jasmonate co-receptors and transcriptional repressor in jasmonic acid (JA) signaling pathway, and they play important roles in regulating the growth and development of plants. Recently, more and more researches on JAZ gene family are reported in many plants. Although the genome sequencing of common wheat (Triticum aestivum L.) and its relatives is complete, our knowledge about this gene family remains vacant. RESULTS: Fourteen JAZ genes were identified in the wheat genome...
February 13, 2017: BMC Genomics
https://www.readbyqxmd.com/read/28186193/genome-wide-identification-of-the-tify-gene-family-in-three-cultivated-gossypium-species-and-the-expression-of-jaz-genes
#14
Quan Sun, Guanghao Wang, Xiao Zhang, Xiangrui Zhang, Peng Qiao, Lu Long, Youlu Yuan, Yingfan Cai
TIFY proteins are plant-specific proteins containing TIFY, JAZ, PPD and ZML subfamilies. A total of 50, 54 and 28 members of the TIFY gene family in three cultivated cotton species-Gossypium hirsutum, Gossypium barbadense and Gossypium arboretum-were identified, respectively. The results of phylogenetic analysis showed that these TIFY genes were divided into eight clusters. The different clusters of gene family members often have similar gene structures, including the number of exons. The results of quantitative reverse transcription polymerase chain reaction (qRT-PCR) showed that different JAZ genes displayed distinct expression patterns in the leaves of upland cotton under treatment with Gibberellin (GA), methyl jasmonate (MeJA), Jasmonic acid (JA) and abscisic acid (ABA)...
February 10, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28184233/overexpression-of-the-novel-arabidopsis-gene-at5g02890-alters-inflorescence-stem-wax-composition-and-affects-phytohormone-homeostasis
#15
Liping Xu, Viktoria Zeisler, Lukas Schreiber, Jie Gao, Kaining Hu, Jing Wen, Bin Yi, Jinxiong Shen, Chaozhi Ma, Jinxing Tu, Tingdong Fu
The cuticle is composed of cutin and cuticular wax. It covers the surfaces of land plants and protects them against environmental damage. At5g02890 encodes a novel protein in Arabidopsis thaliana. In the current study, protein sequence analysis showed that At5g02890 is highly conserved in the Brassicaceae. Arabidopsis lines overexpressing At5g02890 (OE-At5g02890 lines) and an At5g02890 orthologous gene from Brassica napus (OE-Bn1 lines) exhibited glossy stems. Chemical analysis revealed that overexpression of At5g02890 caused significant reductions in the levels of wax components longer than 28 carbons (C28) in inflorescence stems, whereas the levels of wax molecules of chain length C28 or shorter were significantly increased...
2017: Frontiers in Plant Science
https://www.readbyqxmd.com/read/28182949/catalase2-coordinates-sa-mediated-repression-of-both-auxin-accumulation-and-ja-biosynthesis-in-plant-defenses
#16
Hong-Mei Yuan, Wen-Cheng Liu, Ying-Tang Lu
Plants defend against pathogen attack by modulating auxin signaling and activating the salicylic acid (SA) and jasmonic acid (JA) signaling pathways. SA and JA act antagonistically in resistance to specific pathogen types, yet how plants coordinate these phytohormones remains elusive. Here we report that biotrophic-pathogen-induced SA accumulation dampens both auxin and JA synthesis by inhibiting CATALASE2 (CAT2) activity in the model plant Arabidopsis. SA suppression of CAT2 results in increased H2O2 levels and subsequent sulfenylation of tryptophan synthetase β subunit 1, thus depleting the auxin biosynthetic precursor tryptophan...
February 8, 2017: Cell Host & Microbe
https://www.readbyqxmd.com/read/28182944/the-cat-2-comes-back
#17
Musoki Mwimba, Xinnian Dong
Genetic and biochemical evidence supporting CATALASE2 as a salicylic acid (SA) receptor has finally emerged. In this issue of Cell Host & Microbe, Yuan et al. (2017) show that SA binds to CATALASE2 to inhibit auxin and jasmonic acid biosynthetic enzymes as a means to strengthen plant immunity against biotrophic pathogens.
February 8, 2017: Cell Host & Microbe
https://www.readbyqxmd.com/read/28182745/prosystemin-overexpression-induces-transcriptional-modifications-of-defense-related-and-receptor-like-kinase-genes-and-reduces-the-susceptibility-to-cucumber-mosaic-virus-and-its-satellite-rnas-in-transgenic-tomato-plants
#18
Giovanni Bubici, Anna Vittoria Carluccio, Livia Stavolone, Fabrizio Cillo
Systemin is a plant signal peptide hormone involved in the responses to wounding and insect damage in the Solanaceae family. It works in the same signaling pathway of jasmonic acid (JA) and enhances the expression of proteinase inhibitors. With the aim of studying a role for systemin in plant antiviral responses, a tomato (Solanum lycopersicum) transgenic line overexpressing the prosystemin cDNA, i.e. the systemin precursor, was inoculated with Cucumber mosaic virus (CMV) strain Fny supporting either a necrogenic or a non-necrogenic satellite RNA (satRNA) variant...
2017: PloS One
https://www.readbyqxmd.com/read/28182683/a-mathematical-model-of-the-interaction-of-abscisic-acid-ethylene-and-methyl-jasmonate-on-stomatal-closure-in-plants
#19
Allen Lamarca Nazareno, Bryan Sapon Hernandez
Stomatal closure is affected by various stimuli such as light, atmospheric carbon dioxide concentration, humidity and phytohormones. Our research focuses on phytohormones, specifically: abscisic acid (ABA), ethylene (ET) and methyl jasmonate (MeJA) that are responsible for the regulation of several plant processes, especially in guard cell signalling. While several studies show that these three phytohormones cause stomatal closure in plants, only two studies are notable for establishing a mathematical model of guard cell signalling involving phytohormones...
2017: PloS One
https://www.readbyqxmd.com/read/28179150/transporter-mediated-nuclear-entry-of-jasmonoyl-isoleucine-is-essential-for-jasmonate-signaling
#20
Qingqing Li, Jian Zheng, Shuaizhang Li, Guanrong Huang, Stephen J Skilling, Lijian Wang, Ling Li, Mengya Li, Lixing Yuan, Pei Liu
To control gene expression directly by hormone concentrations, both animal and plant cells have exploited comparable mechanisms to sense small molecular hormones in nucleus. Whether nuclear entry of these hormones is actively transported or passively diffused, as conventionally postulated, through nuclear pore complex remains enigmatic. Here, we identified and characterized a jasmonate transporter in Arabidopsis thaliana, AtJAT1/ AtABCG16, which exhibits an unexpected dual localization in the nuclear envelope and plasma membrane...
February 4, 2017: Molecular Plant
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