Evolutionary Process of Stress Response Systems Controlled by Abscisic Acid in Photosynthetic Organisms

ChemInform ◽  
2006 ◽  
Vol 37 (16) ◽  
Author(s):  
Kenji Yoshida
Keyword(s):  
Abscisic Acid ◽  
Stress Response ◽  
Evolutionary Process ◽  
Photosynthetic Organisms ◽  
Response Systems

Impact of stress response systems on forced choice recognition in an experimental trauma film paradigm

2018 ◽  
Vol 156 ◽  
pp. 45-52
Author(s):  
Felicitas Rombold-Bruehl ◽  
Christian Otte ◽  
Babette Renneberg ◽  
Julian Hellmann-Regen ◽  
Linda Bruch ◽  
...  
Keyword(s):  
Stress Response ◽  
Forced Choice ◽  
Experimental Trauma ◽  
Response Systems ◽  
Trauma Film Paradigm

scholarly journals Phytohormones Regulate the Non-Redundant Response of ω-3 Fatty Acid Desaturases to Low Temperatures in Chorispora Bungeana

2021 ◽  
Author(s):  
Yulan Shi ◽  
Sizhong Yang ◽  
Xiule Yue ◽  
Zhixing Zhao ◽  
Lizhe An
Keyword(s):  
Fatty Acids ◽  
Abscisic Acid ◽  
Fatty Acid ◽  
Stress Response ◽  
Low Temperatures ◽  
Cultured Cells ◽  
Temperature Decrease ◽  
Fatty Acid Desaturases ◽  
Cold Environments ◽  
Chorispora Bungeana

Abstract To explore the contribution of ω-3 fatty acid desaturases (FADs) to cold stress response in a special cryophyte, Chorispora bungeana (C. bungeana), two plastidial ω-3 FAD genes (CbFAD7 and CbFAD8) were cloned and verified in a Arabidopsis fad7fad8 mutant, before being compared with the microsomal ω-3 FAD gene (CbFAD3) on expression profile. Though these genes were expressed in all tested tissues of C. bungeana, CbFAD7 and CbFAD8 have the highest expression in leaves, while CbFAD3 was mostly expressed in non-green tissues. Low temperatures (4, 0 and -4 ℃) resulted in significant increases in trienoic fatty acids (TAs, mainly C18:3), which were consistent with the non-redundant expression of CbFAD3 and CbFAD8 in suspension-cultured cells, and the coordination of CbFAD7 and CbFAD8 in leaves. Furthermore, the contribution of CbFAD8 increased as temperature decrease in the two tissues. Our data revealed that jasmonie acid and brassinosteroids participated in the cold-responsive expression of these genes in both tissues, and the pyhtohormone regulation in leaves was more complicated with the participation of abscisic acid and gibberellin. These results point to the hormone-regulated non-redundant contribution of ω-3 CbFADs to maintain appropriate level of TAs under low temperatures, which help C. bungeana survive in cold environments.

Stress and Substance Misuse

2020 ◽  
pp. 101-118
Author(s):  
James M. Bjork ◽  
Nicholas D. Thomson
Keyword(s):  
Substance Use ◽  
Stress Response ◽  
Stress Responses ◽  
Acute Stress ◽  
Physiological Stress ◽  
Solution Space ◽  
Chronic Administration ◽  
Behavioral Repertoire ◽  
Physiological Stress Response ◽  
Response Systems

Stress is both a critical contributor and consequence of substance use disorder (SUD). First, exaggerated subjective stress responses are characteristic of affective symptomatology such as depression, bipolar disorder, generalized anxiety, and posttraumatic stress disorder (sometimes stemming from histories of abuse) that have been prognostic of development of addiction in longitudinal studies. Substance use is negatively reinforced in many at-risk and addicted individuals because it may acutely alleviate stress. Second, chronic administration of commonly abused substances alters physiological stress response systems, especially during acute withdrawal. Third, acute stress responses blunt the addicted individual’s frontocortically mediated behavioral repertoire (solution space) in favor of reflexive behavioral biases toward relief-based substance use. Therefore, acute stress responses are a strong trigger for relapse to substance use during extended recovery. These findings have collectively led to approaches to SUD relapse prevention that pharmacologically blunt components of the stress response, but these agents have not reliably shown success in human clinical trials. This chapter reviews these different relationships between stress and addiction and offers future avenues for additional research.

scholarly journals Antagonistic Interaction between Systemic Acquired Resistance and the Abscisic Acid–Mediated Abiotic Stress Response in Arabidopsis

2008 ◽  
Vol 20 (6) ◽  
pp. 1678-1692 ◽  
Author(s):  
Michiko Yasuda ◽  
Atsushi Ishikawa ◽  
Yusuke Jikumaru ◽  
Motoaki Seki ◽  
Taishi Umezawa ◽  
...  
Keyword(s):  
Abscisic Acid ◽  
Abiotic Stress ◽  
Stress Response ◽  
Systemic Acquired Resistance ◽  
Acquired Resistance ◽  
Abiotic Stress Response ◽  
Antagonistic Interaction

Beyond allostatic load: Rethinking the role of stress in regulating human development

2013 ◽  
Vol 26 (1) ◽  
pp. 1-20 ◽  
Author(s):  
Bruce J. Ellis ◽  
Marco Del Giudice
Keyword(s):  
Life History ◽  
Stress Response ◽  
Allostatic Load ◽  
Life History Theory ◽  
Calibration Model ◽  
Load Model ◽  
Adaptive Calibration ◽  
Trade Offs ◽  
Response Systems

AbstractHow do exposures to stress affect biobehavioral development and, through it, psychiatric and biomedical disorder? In the health sciences, the allostatic load model provides a widely accepted answer to this question: stress responses, while essential for survival, have negative long-term effects that promote illness. Thus, the benefits of mounting repeated biological responses to threat are traded off against costs to mental and physical health. The adaptive calibration model, an evolutionary–developmental theory of stress–health relations, extends this logic by conceptualizing these trade-offs as decision nodes in allocation of resources. Each decision node influences the next in a chain of resource allocations that become instantiated in the regulatory parameters of stress response systems. Over development, these parameters filter and embed information about key dimensions of environmental stress and support, mediating the organism's openness to environmental inputs, and function to regulate life history strategies to match those dimensions. Drawing on the adaptive calibration model, we propose that consideration of biological fitness trade-offs, as delineated by life history theory, is needed to more fully explain the complex relations between developmental exposures to stress, stress responsivity, behavioral strategies, and health. We conclude that the adaptive calibration model and allostatic load model are only partially complementary and, in some cases, support different approaches to intervention. In the long run, the field may be better served by a model informed by life history theory that addresses the adaptive role of stress response systems in regulating alternative developmental pathways.

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