scholarly journals Salicylic acid production in response to biotic and abiotic stress depends on isochorismate inNicotiana benthamiana

FEBS Letters ◽  
2008 ◽  
Vol 582 (4) ◽  
pp. 473-478 ◽  
Author(s):  
Jérémy Catinot ◽  
Antony Buchala ◽  
Eliane Abou-Mansour ◽  
Jean-Pierre Métraux
Keyword(s):  
Salicylic Acid ◽  
Abiotic Stress ◽  
Acid Production ◽  
Biotic And Abiotic Stress

scholarly journals Salicylic Acid Induced Physiological Responses of Microchaete Sp. NCCU-342 Under PQ Stress

2021 ◽  
Author(s):  
Haleema Naaz ◽  
Bushra Afzal ◽  
Neha Sami ◽  
Durdana Yasin ◽  
Nida Jamil Khan ◽  
...  
Keyword(s):  
Salicylic Acid ◽  
Abiotic Stress ◽  
Redox State ◽  
Crop Productivity ◽  
Management Tool ◽  
Antioxidant Enzyme Activities ◽  
Agricultural Pests ◽  
Biotic And Abiotic Stress ◽  
Paraquat Toxicity ◽  
Water Nutrients

Abstract Weeds are the worst category of agricultural pests as they compete with crops for water, nutrients, and light, grow faster than crops and eventually reduces the crop productivity thereby increasing the production cost. Herbicide has been used as a management tool to control weeds, by modifying their physiological activities like reducing photosynthesis, increasing protease activity and free radicals etc. The application of non-selected herbicides kills not only the weeds but also non-target organisms including the main crop. Herbicides like paraquat have been used in rice fields but its toxic effects on other organisms is at par. Salicylic acid, a plant growth regulator, is known to regulate oxidative stress in plants subjected to unfavourable environmental conditions. Given this, the present study was designed to study the effect of salicylic acid in Microchaete sp. NCCU-342 exposed to paraquat. The results obtained demonstrated that the paraquat toxicity elevated MDA and H2O2 levels, indicating free radical formation. However, supplementation of salicylic acid in the culture medium reduced the paraquat toxicity. The content of MDA and H2O2 in presence of salicylic acid was similar to the control. It enhances phenolic compound (29.07%) and phytohormones content (IAA-2.96%, SA-96.59%) and regulate the redox state of the cells. A significant change (recorded in percentage) was observed in the antioxidant enzyme activities including SOD (121.62 %), CAT (30.38 %), APX (74.38 %), GPX (127 %) and GR (141%) in presence of paraquat and after supplementation of salicylic acid. Antioxidant assay confirmed the change in antioxidants in form of phenolic compounds. Salicylic acid supplementation also enhanced the antibacterial activity of cyanobacteria, highlighting that it induces resistance against biotic stress as well as the abiotic stress. This work provides evidence for the ability of salicylic acid to alleviate the paraquat-induced toxicity, maintain redox state and resist the cell against both biotic and abiotic stress.

Biotic and Abiotic Stress Signaling Mediated by Salicylic Acid

2015 ◽  
pp. 329-346 ◽  
Author(s):  
Dhirendra Kumar ◽  
Danda Chapagai ◽  
Phillip Dean ◽  
Mackenzie Davenport
Keyword(s):  
Salicylic Acid ◽  
Abiotic Stress ◽  
Stress Signaling ◽  
Biotic And Abiotic Stress

scholarly journals Salicylic acid and its location in response to biotic and abiotic stress

FEBS Letters ◽  
2011 ◽  
Vol 585 (12) ◽  
pp. 1847-1852 ◽  
Author(s):  
Cindy Fragnière ◽  
Mario Serrano ◽  
Eliane Abou-Mansour ◽  
Jean-Pierre Métraux ◽  
Floriane L'Haridon
Keyword(s):  
Salicylic Acid ◽  
Abiotic Stress ◽  
Biotic And Abiotic Stress

scholarly journals Comparison of Different Treatment Methods of Salicylic acid on Some Physiological Traits of White Bean Under Salinity Stress

2014 ◽  
Vol 47 (3) ◽  
pp. 97-105 ◽  
Author(s):  
H. Hadi ◽  
A. Najafabadi ◽  
R. Amirnia
Keyword(s):  
Salicylic Acid ◽  
Abiotic Stress ◽  
Chlorophyll A ◽  
Abiotic Stress Tolerance ◽  
Soluble Sugars ◽  
Total Chlorophyll ◽  
Biotic And Abiotic Stress ◽  
Signal Molecule ◽  
White Bean ◽  
Application Methods

Abstract It has been shown that salicylic acid (SA) acts as an endogenous signal molecule responsible for inducing biotic and abiotic stress tolerance in plants. The effect of three application methods (Soil, Foliar and Priming) and four salicylic acid concentrations (0, 0.1, 0.5 and 1.0 mM) on chlorophyll a, b and total chlorophyll, carotenoids, proline, protein and soluble sugars of NaCl (4 ds/m) stressed white bean (Phaseulus vulgaris L.) was investigated. The results showed that the effect of applied concentrations and application methods on chlorophyll a and total chlorophyll, proline, protein and soluble sugars were significant. The interaction of concentrations and application methods used was significant on protein, proline and soluble sugars. According to the results, the greatest impact was belonged to the soil treatment which was not significantly different from priming. Among applied concentrations, the concentration of 0.1 and 0.5 mM were the most effective and the concentration of 1 mM was not significantly different from the control.

scholarly journals Get Together: The Interaction between Melatonin and Salicylic Acid as a Strategy to Improve Plant Stress Tolerance

Agronomy ◽  
2020 ◽  
Vol 10 (10) ◽  
pp. 1486
Author(s):  
Alfonso Albacete
Keyword(s):  
Salicylic Acid ◽  
Abiotic Stress ◽  
Stress Tolerance ◽  
Stress Responses ◽  
Abiotic Stress Tolerance ◽  
Plant Stress ◽  
Future Research ◽  
Biotic And Abiotic Stress ◽  
Plant Stress Responses ◽  
Action Model

Both melatonin and salicylic acid (SA) have been demonstrated to play multiple functions in plant physiological processes and biotic and abiotic stress responses. So far, these regulatory molecules have been separately studied despite sharing a common biosynthetic precursor and their similar physiological actions and stress regulation signals. The review published in Agronomy by Hernández-Ruiz and Arnao entitled “Relationship of melatonin and salicylic acid in biotic/abiotic stress responses” highlights the coincidences and similarities of both regulatory molecules via a thorough literature search and proposes an action model for their interaction in plant stress responses. Despite the undeniable interest and potential impact of this view, it has been focused only on coincident regulatory aspects of SA and melatonin, and the antioxidant-mediated model of interaction that has been proposed is rather speculative and needs to be mechanistically demonstrated. Nevertheless, the mentioned review leads to future research on the melatonin-SA crosstalk to improve biotic and abiotic stress tolerance, which is of utmost importance to ensure food production in the actual age of pandemics and for the upcoming climate crisis scenario.

scholarly journals Salicylic Acid Accumulation Controlled by LSD1 Is Essential in Triggering Cell Death in Response to Abiotic Stress

Cells ◽  
2021 ◽  
Vol 10 (4) ◽  
pp. 962
Author(s):  
Maciej Jerzy Bernacki ◽  
Anna Rusaczonek ◽  
Weronika Czarnocka ◽  
Stanisław Karpiński
Keyword(s):  
Cell Death ◽  
Salicylic Acid ◽  
Abiotic Stress ◽  
Wild Type ◽  
Pr Genes ◽  
Genes Expression ◽  
Salicylic Acid Accumulation ◽  
Cell Death Phenotype ◽  
Insight Into

Salicylic acid (SA) is well known hormonal molecule involved in cell death regulation. In response to a broad range of environmental factors (e.g., high light, UV, pathogens attack), plants accumulate SA, which participates in cell death induction and spread in some foliar cells. LESION SIMULATING DISEASE 1 (LSD1) is one of the best-known cell death regulators in Arabidopsis thaliana. The lsd1 mutant, lacking functional LSD1 protein, accumulates SA and is conditionally susceptible to many biotic and abiotic stresses. In order to get more insight into the role of LSD1-dependent regulation of SA accumulation during cell death, we crossed the lsd1 with the sid2 mutant, caring mutation in ISOCHORISMATE SYNTHASE 1(ICS1) gene and having deregulated SA synthesis, and with plants expressing the bacterial nahG gene and thus decomposing SA to catechol. In response to UV A+B irradiation, the lsd1 mutant exhibited clear cell death phenotype, which was reversed in lsd1/sid2 and lsd1/NahG plants. The expression of PR-genes and the H2O2 content in UV-treated lsd1 were significantly higher when compared with the wild type. In contrast, lsd1/sid2 and lsd1/NahG plants demonstrated comparability with the wild-type level of PR-genes expression and H2O2. Our results demonstrate that SA accumulation is crucial for triggering cell death in lsd1, while the reduction of excessive SA accumulation may lead to a greater tolerance toward abiotic stress.

scholarly journals Genome-Wide Transcriptomic Identification and Functional Insight of Lily WRKY Genes Responding to Botrytis Fungal Disease

Plants ◽  
2021 ◽  
Vol 10 (4) ◽  
pp. 776
Author(s):  
Shipra Kumari ◽  
Bashistha Kumar Kanth ◽  
Ju young Ahn ◽  
Jong Hwa Kim ◽  
Geung-Joo Lee
Keyword(s):  
Abiotic Stress ◽  
Biotic Stress ◽  
Developmental Stages ◽  
Expression Patterns ◽  
Lilium Longiflorum ◽  
Biotic And Abiotic Stress ◽  
Biotic Stresses ◽  
Genome Wide

Genome-wide transcriptome analysis using RNA-Seq of Lilium longiflorum revealed valuable genes responding to biotic stresses. WRKY transcription factors are regulatory proteins playing essential roles in defense processes under environmental stresses, causing considerable losses in flower quality and production. Thirty-eight WRKY genes were identified from the transcriptomic profile from lily genotypes, exhibiting leaf blight caused by Botrytis elliptica. Lily WRKYs have a highly conserved motif, WRKYGQK, with a common variant, WRKYGKK. Phylogeny of LlWRKYs with homologous genes from other representative plant species classified them into three groups- I, II, and III consisting of seven, 22, and nine genes, respectively. Base on functional annotation, 22 LlWRKY genes were associated with biotic stress, nine with abiotic stress, and seven with others. Sixteen unique LlWRKY were studied to investigate responses to stress conditions using gene expression under biotic and abiotic stress treatments. Five genes—LlWRKY3, LlWRKY4, LlWRKY5, LlWRKY10, and LlWRKY12—were substantially upregulated, proving to be biotic stress-responsive genes in vivo and in vitro conditions. Moreover, the expression patterns of LlWRKY genes varied in response to drought, heat, cold, and different developmental stages or tissues. Overall, our study provides structural and molecular insights into LlWRKY genes for use in the genetic engineering in Lilium against Botrytis disease.

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