Overexpression of BAK1 causes salicylic acid accumulation and deregulation of cell death control genes

2017 ◽  
Vol 484 (4) ◽  
pp. 781-786 ◽  
Author(s):  
Sun Young Kim ◽  
Yun Shang ◽  
Se-Hwan Joo ◽  
Seong-Ki Kim ◽  
Kyoung Hee Nam
Keyword(s):  
Cell Death ◽  
Salicylic Acid ◽  
Acid Accumulation ◽  
Salicylic Acid Accumulation

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 Pathogen-inducibleCaUGT1is involved in resistance response against TMV infection by controlling salicylic acid accumulation

FEBS Letters ◽  
2009 ◽  
Vol 583 (13) ◽  
pp. 2315-2320 ◽  
Author(s):  
Boo-Ja Lee ◽  
Sung-Kyu Kim ◽  
Soo Bok Choi ◽  
Jungdon Bae ◽  
Ki-Jeong Kim ◽  
...  
Keyword(s):  
Salicylic Acid ◽  
Resistance Response ◽  
Acid Accumulation ◽  
Salicylic Acid Accumulation

Probenazole induces systemic acquired resistance in tobacco through salicylic acid accumulation

2002 ◽  
Vol 61 (4) ◽  
pp. 197-203 ◽  
Author(s):  
Hideo Nakashita ◽  
Keiko Yoshioka ◽  
Michiko Yasuda ◽  
Takako Nitta ◽  
Yuko Arai ◽  
...  
Keyword(s):  
Salicylic Acid ◽  
Systemic Acquired Resistance ◽  
Acquired Resistance ◽  
Acid Accumulation ◽  
Salicylic Acid Accumulation

Hydrogen peroxide promotes programmed cell death and salicylic acid accumulation during the induced production of sesquiterpenes in cultured cell suspensions of Aquilaria sinensis

2015 ◽  
Vol 42 (4) ◽  
pp. 337 ◽  
Author(s):  
Juan Liu ◽  
Yanhong Xu ◽  
Zheng Zhang ◽  
Jianhe Wei
Keyword(s):  
Hydrogen Peroxide ◽  
Cell Death ◽  
Salicylic Acid ◽  
Programmed Cell Death ◽  
Cell Suspensions ◽  
Valuable Insight ◽  
Aquilaria Sinensis ◽  
Defensive Reaction ◽  
Cultured Cell ◽  
Salicylic Acid Accumulation

Aquilaria sinensis (Lour.) Gilg produces a highly valuable agarwood characterised by a diverse array of sesquiterpenes and chromone derivatives that can protect wounded trees against potential herbivores and pathogens. A defensive reaction on the part of the plant has been proposed as the key reason for agarwood formation, but the issue of whether programmed cell death (PCD), an important process of plant immune responding, is involved in agarwood formation, still needs to be clarified. In this study, treatment of cultured cell suspensions with hydrogen peroxide (H2O2) induced the production of sesquiterpenes due to endogenous accumulation of salicylic acid (SA) and elevations in the expression of sesquiterpene biosynthetic genes. Moreover, PCD was stimulated by H2O2 in cultured cell suspensions of A. sinensis due to the induction of caspase activity, upregulated expression of metacaspases and cytochrome c, and SA accumulation. Our findings demonstrate for the first time that H2O2 stimulates PCD, SA accumulation and sesquiterpene production in cultured cell suspensions of A. sinensis. Furthermore, results from this study provide a valuable insight into investigations of the potential interactions between sesquiterpene synthesis and PCD during agarwood formation.

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