scholarly journals Jasmonic Acid Signaling Pathway in Plants

2019 ◽  
Vol 20 (10) ◽  
pp. 2479 ◽  
Author(s):  
Jingjun Ruan ◽  
Yuexia Zhou ◽  
Meiliang Zhou ◽  
Jun Yan ◽  
Muhammad Khurshid ◽  
...  
Keyword(s):  
Jasmonic Acid ◽  
Plant Responses ◽  
Biological Processes ◽  
Biotic And Abiotic Stresses ◽  
Signal Perception ◽  
Physiological Processes ◽  
Jasmonic Acid Signaling ◽  
Ja Signaling ◽  
Local Transmission ◽  
Signal Receptors

Jasmonic acid (JA) and its precursors and dervatives, referred as jasmonates (JAs) are important molecules in the regulation of many physiological processes in plant growth and development, and especially the mediation of plant responses to biotic and abiotic stresses. JAs biosynthesis, perception, transport, signal transduction and action have been extensively investigated. In this review, we will discuss the initiation of JA signaling with a focus on environmental signal perception and transduction, JA biosynthesis and metabolism, transport of signaling molecules (local transmission, vascular bundle transmission, and airborne transportation), and biological function (JA signal receptors, regulated transcription factors, and biological processes involved).

The JASMONATE ZIM-DOMAIN family proteins are the important node in jasmonic acid-abscisic acid crosstalk in regulating plant response to drought

2021 ◽  
Vol 22 ◽  
Author(s):  
Aarti Gupta ◽  
Mamta Bhardwaj ◽  
Lam-Son Phan Tran
Keyword(s):  
Abscisic Acid ◽  
Jasmonic Acid ◽  
Biological Processes ◽  
Plant Tolerance ◽  
Adaptive Responses ◽  
Domain Family ◽  
Physiological Processes ◽  
Jaz Proteins ◽  
Ja Signaling ◽  
Insight Into

: Plants modulate the metabolism of phytohormones and their signaling pathways under drought to regulate physiological and adaptive responses. Jasmonic acid (JA) is one of the major classes of phytohormones and has been found to potentially enhance plant tolerance to various abiotic stresses, including drought. The JASMONATE ZIM-DOMAIN (JAZ) proteins are the negative regulators in the JA-signaling pathway. The JAZ protein family is explicit to plants and involved in the regulation of numerous biological processes, including drought-responsive mechanisms. In this review, we synthesize the mechanistic insight into the roles of JAZ proteins in regulation of drought responses by connecting the JA-signaling with abscisic acid-signaling to modulate drought-responsive physiological processes.

scholarly journals Heterologous microProtein expression identifies LITTLE NINJA, a dominant regulator of jasmonic acid signaling

2020 ◽  
Vol 117 (42) ◽  
pp. 26197-26205
Author(s):  
Shin-Young Hong ◽  
Bin Sun ◽  
Daniel Straub ◽  
Anko Blaakmeer ◽  
Lorenzo Mineri ◽  
...  
Keyword(s):  
Comparative Genomics ◽  
Jasmonic Acid ◽  
Genome Engineering ◽  
Ectopic Expression ◽  
Grass Species ◽  
Multidomain Proteins ◽  
Enhanced Production ◽  
Jasmonic Acid Signaling ◽  
Domain Protein ◽  
Ja Signaling

MicroProteins are small, often single-domain proteins that are sequence-related to larger, often multidomain proteins. Here, we used a combination of comparative genomics and heterologous synthetic misexpression to isolate functional cereal microProtein regulators. Our approach identified LITTLE NINJA (LNJ), a microProtein that acts as a modulator of jasmonic acid (JA) signaling. Ectopic expression ofLNJinArabidopsisresulted in stunted plants that resembled the decupleJAZ(jazD) mutant. In fact, comparing the transcriptomes of transgenicLNJoverexpressor plants andjazDrevealed a large overlap of deregulated genes, suggesting that ectopicLNJexpression altered JA signaling. Transgenic Brachypodium plants with elevatedLNJexpression levels showed deregulation of JA signaling as well and displayed reduced growth and enhanced production of side shoots (tiller). This tillering effect was transferable between grass species, and overexpression ofLNJin barley and rice caused similar traits. We used a clustered regularly interspaced short palindromic repeats (CRISPR) approach and created a LNJ-like protein inArabidopsisby deleting parts of the coding sentence of theAFP2gene that encodes a NINJA-domain protein. Theseafp2-crisprmutants were also stunted in size and resembledjazD. Thus, similar genome-engineering approaches can be exploited as a future tool to create LNJ proteins and produce cereals with altered architectures.

scholarly journals Jasmonic Acid Signaling Pathway in Response to Abiotic Stresses in Plants

2020 ◽  
Vol 21 (2) ◽  
pp. 621 ◽  
Author(s):  
Md. Sarafat Ali ◽  
Kwang-Hyun Baek
Keyword(s):  
Signal Transduction ◽  
Jasmonic Acid ◽  
Abiotic Stresses ◽  
Gene Networks ◽  
Light Stress ◽  
Freezing Stress ◽  
Signal Transduction Pathways ◽  
Plant Responses ◽  
Physiological Processes ◽  
Informational Cues

Plants as immovable organisms sense the stressors in their environment and respond to them by means of dedicated stress response pathways. In response to stress, jasmonates (jasmonic acid, its precursors and derivatives), a class of polyunsaturated fatty acid-derived phytohormones, play crucial roles in several biotic and abiotic stresses. As the major immunity hormone, jasmonates participate in numerous signal transduction pathways, including those of gene networks, regulatory proteins, signaling intermediates, and proteins, enzymes, and molecules that act to protect cells from the toxic effects of abiotic stresses. As cellular hubs for integrating informational cues from the environment, jasmonates play significant roles in alleviating salt stress, drought stress, heavy metal toxicity, micronutrient toxicity, freezing stress, ozone stress, CO2 stress, and light stress. Besides these, jasmonates are involved in several developmental and physiological processes throughout the plant life. In this review, we discuss the biosynthesis and signal transduction pathways of the JAs and the roles of these molecules in the plant responses to abiotic stresses.

scholarly journals Crosstalk with Jasmonic Acid Integrates Multiple Responses in Plant Development

2020 ◽  
Vol 21 (1) ◽  
pp. 305 ◽  
Author(s):  
Geupil Jang ◽  
Youngdae Yoon ◽  
Yang Do Choi
Keyword(s):  
Plant Growth ◽  
Jasmonic Acid ◽  
Plant Development ◽  
Growth And Development ◽  
Molecular Mechanisms ◽  
Plant Responses ◽  
Plant Growth And Development ◽  
Biotic And Abiotic Stresses ◽  
Hormonal Responses ◽  
Environmental Responses

To date, extensive studies have identified many classes of hormones in plants and revealed the specific, nonredundant signaling pathways for each hormone. However, plant hormone functions largely overlap in many aspects of plant development and environmental responses, suggesting that studying the crosstalk among plant hormones is key to understanding hormonal responses in plants. The phytohormone jasmonic acid (JA) is deeply involved in the regulation of plant responses to biotic and abiotic stresses. In addition, a growing number of studies suggest that JA plays an essential role in the modulation of plant growth and development under stress conditions, and crosstalk between JA and other phytohormones involved in growth and development, such as gibberellic acid (GA), cytokinin, and auxin modulate various developmental processes. This review summarizes recent findings of JA crosstalk in the modulation of plant growth and development, focusing on JA–GA, JA–cytokinin, and JA–auxin crosstalk. The molecular mechanisms underlying this crosstalk are also discussed.

scholarly journals The THO/TREX Complex Active in Alternative Splicing Mediates Plant Responses to Salicylic Acid and Jasmonic Acid

2021 ◽  
Vol 22 (22) ◽  
pp. 12197
Author(s):  
Nengxu Sun ◽  
Xiangjiu Kong ◽  
Yueyan Liu ◽  
Tingting Gong ◽  
Xiaoyong Gu ◽  
...  
Keyword(s):  
Salicylic Acid ◽  
Alternative Splicing ◽  
Jasmonic Acid ◽  
Pseudomonas Syringae ◽  
Plant Defenses ◽  
Plant Responses ◽  
Necrotrophic Pathogen ◽  
Interacting Protein ◽  
A Subunit ◽  
Ja Signaling

Salicylic acid (SA) and jasmonic acid (JA) are essential plant immune hormones, which could induce plant resistance to multiple pathogens. However, whether common components are employed by both SA and JA to induce defense is largely unknown. In this study, we found that the enhanced disease susceptibility 8 (EDS8) mutant was compromised in plant defenses to hemibiotrophic pathogen Pseudomonas syringae pv. maculicola ES4326 and necrotrophic pathogen Botrytis cinerea, and was deficient in plant responses to both SA and JA. The EDS8 was identified to be THO1, which encodes a subunit of the THO/TREX complex, by using mapping-by-sequencing. To check whether the EDS8 itself or the THO/TREX complex mediates SA and JA signaling, the mutant of another subunit of the THO/TREX complex, THO3, was tested. THO3 mutation reduced both SA and JA induced defenses, indicating that the THO/TREX complex is critical for plant responses to these two hormones. We further proved that the THO/TREX interacting protein SERRATE, a factor regulating alternative splicing (AS), was involved in plant responses to SA and JA. Thus, the AS events in the eds8 mutant after SA or JA treatment were determined, and we found that the SA and JA induced different alternative splicing events were majorly modulated by EDS8. In summary, our study proves that the THO/TREX complex active in AS is involved in both SA and JA induced plant defenses.

scholarly journals Function and Mechanism of Jasmonic Acid in Plant Responses to Abiotic and Biotic Stresses

2021 ◽  
Vol 22 (16) ◽  
pp. 8568
Author(s):  
Yun Wang ◽  
Salma Mostafa ◽  
Wen Zeng ◽  
Biao Jin
Keyword(s):  
Jasmonic Acid ◽  
Plant Hormones ◽  
Stress Responses ◽  
Abiotic Stresses ◽  
Plant Stress ◽  
Plant Responses ◽  
Biotic And Abiotic Stresses ◽  
Research Attention ◽  
Biotic Stresses ◽  
Plant Stress Responses

As sessile organisms, plants must tolerate various environmental stresses. Plant hormones play vital roles in plant responses to biotic and abiotic stresses. Among these hormones, jasmonic acid (JA) and its precursors and derivatives (jasmonates, JAs) play important roles in the mediation of plant responses and defenses to biotic and abiotic stresses and have received extensive research attention. Although some reviews of JAs are available, this review focuses on JAs in the regulation of plant stress responses, as well as JA synthesis, metabolism, and signaling pathways. We summarize recent progress in clarifying the functions and mechanisms of JAs in plant responses to abiotic stresses (drought, cold, salt, heat, and heavy metal toxicity) and biotic stresses (pathogen, insect, and herbivore). Meanwhile, the crosstalk of JA with various other plant hormones regulates the balance between plant growth and defense. Therefore, we review the crosstalk of JAs with other phytohormones, including auxin, gibberellic acid, salicylic acid, brassinosteroid, ethylene, and abscisic acid. Finally, we discuss current issues and future opportunities in research into JAs in plant stress responses.

scholarly journals A Novel Rice PR10 Protein, RSOsPR10, Specifically Induced in Roots by Biotic and Abiotic Stresses, Possibly via the Jasmonic Acid Signaling Pathway

2004 ◽  
Vol 45 (5) ◽  
pp. 550-559 ◽  
Author(s):  
Makoto Hashimoto ◽  
Larisa Kisseleva ◽  
Shinichiro Sawa ◽  
Toshiko Furukawa ◽  
Setsuko Komatsu ◽  
...  
Keyword(s):  
Jasmonic Acid ◽  
Signaling Pathway ◽  
Abiotic Stresses ◽  
Biotic And Abiotic Stresses ◽  
Jasmonic Acid Signaling ◽  
Pr10 Protein

scholarly journals Synthesis and Biological Activity of Brassinosteroid Analogues with a Nitrogen-Containing Side Chain

2020 ◽  
Vol 22 (1) ◽  
pp. 155
Author(s):  
Mikhail V. Diachkov ◽  
Karoll Ferrer ◽  
Jana Oklestkova ◽  
Lucie Rarova ◽  
Vaclav Bazgier ◽  
...  
Keyword(s):  
Biological Activity ◽  
Functional Groups ◽  
Side Chain ◽  
Biotic And Abiotic Stresses ◽  
Short Side ◽  
Arabidopsis Root ◽  
Physiological Processes ◽  
Growth Promoting ◽  
The Impact ◽  
Brassinosteroid Analogues

Brassinosteroids are a class of plant hormones that regulate a broad range of physiological processes such as plant growth, development and immunity, including the suppression of biotic and abiotic stresses. In this paper, we report the synthesis of new brassinosteroid analogues with a nitrogen-containing side chain and their biological activity on Arabidopis thaliana. Based on molecular docking experiments, two groups of brassinosteroid analogues were prepared with short and long side chains in order to study the impact of side chain length on plants. The derivatives with a short side chain were prepared with amide, amine and ammonium functional groups. The derivatives with a long side chain were synthesized using amide and ammonium functional groups. A total of 25 new brassinosteroid analogues were prepared. All 25 compounds were tested in an Arabidopsis root sensitivity bioassay and cytotoxicity screening. The synthesized substances showed no significant inhibitory activity compared to natural 24-epibrassinolide. In contrast, in low concentration, several compounds (8a, 8b, 8e, 16e, 22a and 22e) showed interesting growth-promoting activity. The cytotoxicity assay showed no toxicity of the prepared compounds on cancer and normal cell lines.

scholarly journals Disentangling transcriptional responses in plant defense against arthropod herbivores

2021 ◽  
Vol 11 (1) ◽  
Author(s):  
Alejandro Garcia ◽  
M. Estrella Santamaria ◽  
Isabel Diaz ◽  
Manuel Martinez
Keyword(s):  
Regulatory Networks ◽  
Pieris Rapae ◽  
Meta Analysis ◽  
Plant Response ◽  
Plant Responses ◽  
Transcriptional Responses ◽  
Crop Species ◽  
Physiological Processes ◽  
Meta Analyses ◽  
Plant Herbivore

AbstractThe success in the response of a plant to a pest depends on the regulatory networks that connect plant perception and plant response. Meta-analyses of transcriptomic responses are valuable tools to discover novel mechanisms in the plant/herbivore interplay. Considering the quantity and quality of available transcriptomic analyses, Arabidopsis thaliana was selected to test the ability of comprehensive meta-analyses to disentangle plant responses. The analysis of the transcriptomic data showed a general induction of biological processes commonly associated with the response to herbivory, like jasmonate signaling or glucosinolate biosynthesis. However, an uneven induction of many genes belonging to these biological categories was found, which was likely associated with the particularities of each specific Arabidopsis-herbivore interaction. A thorough analysis of the responses to the lepidopteran Pieris rapae and the spider mite Tetranychus urticae highlighted specificities in the perception and signaling pathways associated with the expression of receptors and transcription factors. This information was translated to a variable alteration of secondary metabolic pathways. In conclusion, transcriptomic meta-analysis has been revealed as a potent way to sort out relevant physiological processes in the plant response to herbivores. Translation of these transcriptomic-based analyses to crop species will permit a more appropriate design of biotechnological programs.

scholarly journals OsJAZ11 regulates phosphate starvation responses in rice

Planta ◽  
2021 ◽  
Vol 254 (1) ◽  
Author(s):  
Bipin K. Pandey ◽  
Lokesh Verma ◽  
Ankita Prusty ◽  
Ajit Pal Singh ◽  
Malcolm J. Bennett ◽  
...  
Keyword(s):  
Jasmonic Acid ◽  
Root Length ◽  
Root Elongation ◽  
Terminal Region ◽  
Physical Interaction ◽  
Plant Signaling ◽  
Functional Connections ◽  
Growth Inhibitory ◽  
Expression Studies ◽  
Ja Signaling

Abstract Main conclusion OsJAZ11 regulates phosphate homeostasis by suppressing jasmonic acid signaling and biosynthesis in rice roots. Abstract Jasmonic Acid (JA) is a key plant signaling molecule which negatively regulates growth processes including root elongation. JAZ (JASMONATE ZIM-DOMAIN) proteins function as transcriptional repressors of JA signaling. Therefore, targeting JA signaling by deploying JAZ repressors may enhance root length in crops. In this study, we overexpressed JAZ repressor OsJAZ11 in rice to alleviate the root growth inhibitory action of JA. OsJAZ11 is a low phosphate (Pi) responsive gene which is transcriptionally regulated by OsPHR2. We report that OsJAZ11 overexpression promoted primary and seminal root elongation which enhanced Pi foraging. Expression studies revealed that overexpression of OsJAZ11 also reduced Pi starvation response (PSR) under Pi limiting conditions. Moreover, OsJAZ11 overexpression also suppressed JA signaling and biosynthesis as compared to wild type (WT). We further demonstrated that the C-terminal region of OsJAZ11 was crucial for stimulating root elongation in overexpression lines. Rice transgenics overexpressing truncated OsJAZ11ΔC transgene (i.e., missing C-terminal region) exhibited reduced root length and Pi uptake. Interestingly, OsJAZ11 also regulates Pi homeostasis via physical interaction with a key Pi sensing protein, OsSPX1. Our study highlights the functional connections between JA and Pi signaling and reveals JAZ repressors as a promising candidate for improving low Pi tolerance of elite rice genotypes.

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