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Showing 1 to 20 of 59 for “"Jasmonic Acid"”.
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Elucidating the role of jasmonate metabolites in jasmonic acid signaling
The plant hormone jasmonic acid controls immune responses against insect herbivory and regulates plant development. Jasmonic acid is synthesized upon wounding and herbivory and is converted to many derivatives collectively termed as jasmonate (JA). Jasmonoyl-isoleucine (JA-Ile), among the JA is the …
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Genetic and phenotypic characterisation of an Arabidopsis thaliana jasmonic acid signalling mutant, jam2
Jasmonic acid (JA) is a plant hormone with diverse functions, ranging from development to stress responses. Moreover, a role for JA in mediating defence against pathogen attack has been established, seemingly specific against necrotrophic pathogens such as Botrytis cinerea. Despite these known …
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Role of the COP9 Signalosome In Defense Responses In tomato
… in reduced wound-and herbivory-induced levels of jasmonic acid and reduced expression of wound-response genes. Unexpectedly, these plants also showed increased pathogenesis-related gene expression. Consequently, <em>CSN5</em>–silenced plants were more susceptible to feeding by herbivorous …
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Herbivore resistance in inavasive and native Myriophyllum spicatum and Myriophyllum heterophyllum
… invasive M. spicatum plant tips were exposed to jasmonic acid, a plant hormone known to stimulate the expression of plant defensive genes. A. ephemerella fed plant tips exposed to jasmonic acid had reduced growth compared to individuals fed unexposed plant tips indicating the induction of …
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Identification of the cir1 disease resistance gene in Arabidopsis thaliana
… was shown to constitutively express salicyclic acid-, jasmonic acid/ethylene- and reactive oxygen intermediate-responsive genes. Genetic analysis and mapping studies of the mutation revealed that it is recessive and may be encoded by one of eight genes located within a 309.10 kb region on the …
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Understanding the mechanisms of cir1 disease resistance in Arabidopsis thaliana
… that cir1 constitutively expresses salicylic acid-, jasmonic acid- and ethylene-dependent defence-related genes and exhibits increased resistance to the virulent bacterial pathogen Pseudomonas syringae pv. tomato and the virulent oomycete pathogen Hyaloperonospora parasitica Noco2. Through …
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ANALYSIS OF VARIATIONS IN SUSCEPTIBILITY AND TRANSCRIPTOME RESPONSES IN TOMATO TO TWO-SPOTTED SPIDER MITE FEEDING
… a role in defences against spider miteTbeding. Jasmonic acid levels differed in these two lines endogenously and in response to spider mite feeding. Preliminary analysis of transcriptional response data indicates that MicroTom has a more dynamic early response to spider mite feeding than …
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The effects of jasmonates on the proliferation of human prostate cancer cell lines in culture
Jasmonic acid (JA), cis-Jasmone (CJ), and Methyl jasmonate (MJ), belong to a family of plant stress hormones known as the jasmonates. In plants, these compounds function as activators of cellular responses to diverse situations including cell death. Proliferation and cytotoxicity assays showed that …
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Isoflavonoid induction and nitrogen assimilation in AM colonized red clover
… over time and with a hormonal factor, jasmonic acid (JA). To accomplish these objectives, four greenhouse experiments were performed. The overall results indicate that the colonized red clover plants, with 22% to 37% of AM root colonization, had enhanced shoot height as well as …
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Investigation of defence mechanisms against Botrytis cinerea in Arabidopsis thaliana
… aberrant signalling or accumulation of salicylic acid , ethylene or jasmonic acid `leads to an altered resistance response. Researchers continue to isolate and characterise defence-related mutants to piece together the intricate puzzle of defence-signalling components. A dominant Arabidopsis …
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Functional genomics through metabolite profiling and gene expression analysis in Arabidopsis thaliana
… methyltransferases convert plant hormones, like jasmonic acid, indole-3-acetic acid, salicylic acid, gibberellins, and other plant constituents into methyl esters, thereby regulating the biological activity of these molecules and, consequently, myriad important physiological processes. Our …
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Dual-omics approach for 3,4-dihydroisocoumarin characterisation from Hydrangea serrata and isolation of polyketide synthases for heterologous expression in Pseudomonas putida KT2440
… with different stressors, yeast-elicitor, jasmonic acid, aluminium chloride or drought. None of the applied stressors enhanced the hydrangenol or phyllodulcin accumulation in leaves or roots. Other studies on stressor treatments, resulted in similar outcomes. The purpose of …
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Investigating behaviors of zoonotic and human pathogens on plants
… the expression of gene markers for the salicylic acid and jasmonic acid plant defense pathways were measured and compared in romaine lettuce ( Lactuca sativa ) and Arabidopsis thaliana Col-0 plants were inoculated with either MNV, TV, human norovirus GII.4 or HBSS (control). The results of these …
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Computational investigation of molecular recognition in plant hormone signal transduction
… that have been identified, including abscisic acid, auxin, brassinosteroid, cytokinin, ethylene, giberellin, jasmonic acid, salicylic acid and strigolactone. Plant hormones are specifically recognized by their receptor proteins, and then initiate downstream protein-protein interactions to …
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Physiological and cellular characterization of a plant natriuretic peptide
… signaling molecules. Signaling molecules such as jasmonic acid (JA) are involved in multiple stress response and development in plants (Creelman and Mullet, 1995, 1997; Turner et al., 2002). However it is the specific combination of various components of the signaling network coupled with spatial …
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Elucidation of Jasmonate-Responsive Promoter Elements in the Calmodulin-Like Gene CML39 in Arabidopsis
… shown to strongly respond to the stress hormone jasmonic acid (JA) in Arabidopsis. Bioinformatic tools predict a large number of putative JA-responsive cis-elements within the CML39 promoter. Deletion analysis of CML39 promoter fragments in planta reveals that some cis-elements respond in a …
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Morphologic and Transcriptomic Response to Weed Pressure in Multiple Maize (Zea mays L.) Selections and Teosinte (Zea mays L. ssp parviglumis) Lines
… response to weeds, with 3 gene ontologies (jasmonic acid response/signaling, UDP-glucosyl and glucuronyltransferases, and quercetin glucosyltransferase) common to all selections evaluated. These common ontologies were not directly related to light depravation or quality, nutrient …
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Induced defenses in apple fruits: linking fruit chemistry, quality, and plant-insect-microbe interactions
… and 2) examine the impact of the phytohormones jasmonic acid (JA), salicylic acid (SA), and melatonin (M) on fruit phenolic chemistry and resistance against pests and pathogens. Ultimately, phenolic defenses were induced by fungal damage primarily in ripe pulp tissues, where there was also a …
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Identification of the Pokeweed Antiviral Protein Interactome by Co-Immunoprecipitation-Mass Spectrometry
… PAP and paCP1 co-expression in response to jasmonic acid, supporting the role of this interaction in defense. This work represents the first protein interactome mapping for a RIP; identification of PAP interactors in plant cells contributes to understanding PAP function and will aid in …
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Dissection of Drought Responses in Arabidopsis
… and splicing and as a negative regulator of jasmonic acid biosynthesis and signaling. A forward genetics screen for drought and salt tolerance of transposon activation tag (ATag) lines led to the discovery of novel genes, which shed light on unexplored areas of abiotic stress biology. …
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