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.

Jasmonic acid in wound signal transduction pathways

1997 ◽  
Vol 101 (4) ◽  
pp. 740-745 ◽  
Author(s):  
Shigemi Seo ◽  
Hiroshi Sano ◽  
Yuko Ohashi
Keyword(s):  
Signal Transduction ◽  
Jasmonic Acid ◽  
Signal Transduction Pathways ◽  
Wound Signal

Jasmonic acid in wound signal transduction pathways

1997 ◽  
Vol 101 (4) ◽  
pp. 740-745 ◽  
Author(s):  
Shigemi Seo ◽  
Hiroshi Sano ◽  
Yuko Ohashi
Keyword(s):  
Signal Transduction ◽  
Jasmonic Acid ◽  
Signal Transduction Pathways ◽  
Wound Signal

scholarly journals Bioeffectors as biotechnological tools of the innate immunity: signal transduction pathways involved

2020 ◽  
Author(s):  
Helena Martin-Rivilla ◽  
Ana Garcia-Villaraco ◽  
Beatriz Ramos-Solano ◽  
Francisco Javier Gutierrez-Mañero ◽  
Jose Antonio Lucas
Keyword(s):  
Signal Transduction ◽  
Salicylic Acid ◽  
Immune System ◽  
Jasmonic Acid ◽  
Ethyl Acetate ◽  
Differential Expression ◽  
Signal Transduction Pathways ◽  
Marker Genes ◽  
Nicotiana Glauca ◽  
Plant Immune System

Abstract Background Unravel the complex functioning of plant immune system is essential and something in which great effort is being made since its performance is not entirely clear yet. Knowing plant immune system allows strengthening it and therefore developing a more efficient and environmentally friendly agriculture, avoiding the massive use of agrochemicals and making plants the main protagonist in the defense against pathogens.The use of beneficial rhizobacteria (bioeffectors) and its derived metabolic elicitors are biotechnological alternatives in plant immune system elicitation. The present work aimed to check the ability of 25 bacterial strains selected from a group of 175, isolated from the rhizosphere of Nicotiana glauca, to trigger the innate immune system of Arabidopsis thaliana seedlings against the pathogen Pseudomonas syringae DC3000. A study of the signal transduction pathways involved in plant response was made.Results The selected 25 strains were chosen because of their biochemical traits and avoiding phylogenetic redundancy. The 5 strains, of the previous 25, more effective in the prevention of pathogen infection were used to elucidate signal transduction pathways involved in the plant immune response, studying the differential expression of Salicylic acid and Jasmonic acid/Ethylene pathway marker genes. Some strains stimulated the two pathways with no inhibitory effects between them, while others stimulated either one or the other. Metabolic elicitors of two strains, chosen for their taxonomic affiliation and for the results obtained in the differential expression of the genes studied, were extracted using n-hexane, ethyl acetate and n-butanol, and their capacity to mimic bacterial effect to trigger the immune system of the plant was studied. N-hexane and ethyl acetate were the most effective fractions against the pathogen in both strains, achieving similar protection rates although gene expression responses were different from that obtained by the bacteria. Conclusions Beneficial rhizobacteria and its metabolic elicitors have great potential as biotechnological tools since they are able to improve plant immune system through the triggering of either Salicylic acid or Jasmonic acid/Ethylene pathway or both pathways simultaneously. These results open a huge amount of biotechnological possibilities to develop biological products for agriculture in different situations and plant species.

Protein Phosphatase Type 2C Functions in Phytohormone-Dependent Pathways and in Plant Responses to Abiotic Stresses

2021 ◽  
Vol 22 ◽  
Author(s):  
Nguyen Nguyen Chuong ◽  
Xuan Lan Thi Hoang ◽  
Duong Hoang Trong Nghia ◽  
Thai Ngoc Trang Dai ◽  
Van-Anh Le Thi ◽  
...  
Keyword(s):  
Signal Transduction ◽  
Abiotic Stress ◽  
Signaling Pathway ◽  
Stress Responses ◽  
Abiotic Stresses ◽  
Protein Phosphatases ◽  
Stress Factors ◽  
Plant Responses ◽  
Aba Signaling ◽  
In Planta

: Plants, as sessile organisms, are susceptible to a myriad of stress factors, especially abiotic stresses. Over the course of evolution, they have developed multiple mechanisms to sense and transduce environmental stimuli for appropriate responses. Among those, phosphorylation and dephosphorylation, regulated by protein kinases and protein phosphatases, respectively, are considered as crucial signal transduction mechanisms. Regarding the latter group, protein phosphatases type 2C (PP2Cs) represent the largest division of PPs. In addition, discovery of regulatory functions of PP2Cs in abscisic acid (ABA)-signaling pathway, the major signal transduction pathway in abiotic stress responses, indicates significant importance of PP2C members in plant adaptation to adverse environmental factors. In this review, current understanding of the roles of PP2Cs in different phytohormone-dependent pathways related to abiotic stress is summarized, highlighting the crosstalk between the ABA-signaling pathway with other hormonal pathways via certain ABA-related PP2Cs. We also updated progress of in planta characterization studies of PP2Cs under abiotic stress conditions, providing knowledge of PP2C manipulation in developing abiotic stress-tolerant crops.

scholarly journals Signal-transduction pathways controlling light-regulated development in Arabidopsis

1995 ◽  
Vol 350 (1331) ◽  
pp. 59-65 ◽  
Keyword(s):  
Signal Transduction ◽  
Cellular Differentiation ◽  
Signal Transduction Pathways ◽  
Environmental Cues ◽  
Plant Responses ◽  
Light Responses ◽  
Regulatory Processes ◽  
Signal Light ◽  
Input Signals ◽  
Linear Signal

All metazoan cells are able to make decisions about cell division or cellular differentiation based, in part, on environmental cues. Accordingly, cells express receptor systems that allow them to detect the presence of hormones, growth factors and other signals that manipulate the regulatory processes of the cell. In plants, an unusual signal - light - is required for the induction and regulation of many developmental processes. Past physiological and molecular studies have revealed the variety and complexity of plant responses to light but until recently very little was known about the mechanisms of those responses. Two major breakthroughs have allowed the identification of some photoreceptor signalling intermediates: the identification of photoreceptor and signal transduction mutants in Arabidopsis , and the development of single-cell microinjection assays in which outcomes of photoreceptor signalling can be visualized. Here, we review recent genetic advances which support the notion that light responses are not simply endpoints of linear signal transduction pathways, but are the result of the integration of a variety of input signals through a complex network of interacting signalling components.

scholarly journals Phytochrome B regulates reactive oxygen signaling during abiotic and biotic stress in plants

2021 ◽  
Author(s):  
Yosef Fichman ◽  
Haiyan Xiong ◽  
Soham Sengupta ◽  
Rajeev K Azad ◽  
Julian M Hibberd ◽  
...  
Keyword(s):  
Abiotic Stresses ◽  
Light Stress ◽  
Reactive Oxygen ◽  
Plant Responses ◽  
Ros Production ◽  
Phytochrome B ◽  
Biotic And Abiotic Stresses ◽  
Regulatory Module ◽  
Plant Acclimation ◽  
Life On Earth

Plants are essential for life on Earth converting light into chemical energy in the form of sugars. To adjust for changes in light intensity and quality, and to become as efficient as possible in harnessing light, plants utilize multiple light receptors, signaling, and acclimation mechanisms. In addition to altering plant metabolism, development and growth, light cues sensed by some photoreceptors, such as phytochromes, impact on many plant responses to biotic and abiotic stresses. Central for plant responses to different stresses are reactive oxygen species (ROS) that function as key signaling molecules. Recent studies demonstrated that respiratory burst oxidase homolog (RBOH) proteins that reside at the plasma membrane and produce ROS at the apoplast play a key role in plant responses to different biotic and abiotic stresses. Here we reveal that phytochrome B (phyB) and RBOHs function as part of a key regulatory module that controls ROS production, transcript expression, and plant acclimation to excess light stress. We further show that phyB can regulate ROS production during stress even if it is restricted to the cytosol, and that phyB, RBOHD and RBOHF co-regulate thousands of transcripts in response to light stress. Surprisingly, we found that phyB is also required for ROS accumulation in response to heat, wounding, cold, and bacterial infection. Taken together, our findings reveal that phyB plays a canonical role in plant responses to biotic and abiotic stresses, regulating ROS production, and that phyB and RBOHs function in the same pathway.

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.

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