scholarly journals Redox feedback regulation of ANAC089 signaling alters seed germination and stress response

Cell Reports ◽  
2021 ◽  
Vol 35 (11) ◽  
pp. 109263
Author(s):  
Pablo Albertos ◽  
Kiyoshi Tatematsu ◽  
Isabel Mateos ◽  
Inmaculada Sánchez-Vicente ◽  
Alejandro Fernández-Arbaizar ◽  
...  
Keyword(s):  
Stress Response ◽  
Seed Germination ◽  
Feedback Regulation

ABI5 modulates seed germination via feedback regulation of the expression of the PYR/PYL/RCAR ABA receptor genes

2020 ◽  
Vol 228 (2) ◽  
pp. 596-608 ◽  
Author(s):  
Hongyun Zhao ◽  
Kaili Nie ◽  
Huapeng Zhou ◽  
Xiaojing Yan ◽  
Qidi Zhan ◽  
...  
Keyword(s):  
Seed Germination ◽  
Feedback Regulation ◽  
Aba Receptor

scholarly journals BrEXLB1, a Brassica rapa Expansin-Like B1 Gene Is Associated with Root Development, Drought Stress Response, and Seed Germination

Genes ◽  
2020 ◽  
Vol 11 (4) ◽  
pp. 404 ◽  
Author(s):  
Muthusamy Muthusamy ◽  
Joo Yeol Kim ◽  
Eun Kyung Yoon ◽  
Jin A. Kim ◽  
Soo In Lee
Keyword(s):  
Abiotic Stress ◽  
Drought Stress ◽  
Stress Response ◽  
Seed Germination ◽  
Drought Tolerance ◽  
Root Growth ◽  
Brassica Rapa ◽  
Root Development ◽  
Clubroot Disease ◽  
Qrt Pcr

Expansins are structural proteins prevalent in cell walls, participate in cell growth and stress responses by interacting with internal and external signals perceived by the genetic networks of plants. Herein, we investigated the Brassica rapa expansin-like B1 (BrEXLB1) interaction with phytohormones (IAA, ABA, Ethephon, CK, GA3, SA, and JA), genes (Bra001852, Bra001958, and Bra003006), biotic (Turnip mosaic Virus (TuMV), Pectobacterium carotovorum, clubroot disease), and abiotic stress (salt, oxidative, osmotic, and drought) conditions by either cDNA microarray or qRT-PCR assays. In addition, we also unraveled the potential role of BrEXLB1 in root growth, drought stress response, and seed germination in transgenic Arabidopsis and B. rapa lines. The qRT-PCR results displayed that BrEXLB1 expression was differentially influenced by hormones, and biotic and abiotic stress conditions; upregulated by IAA, ABA, SA, ethylene, drought, salt, osmotic, and oxidative conditions; and downregulated by clubroot disease, P. carotovorum, and TuMV infections. Among the tissues, prominent expression was observed in roots indicating the possible role in root growth. The root phenotyping followed by confocal imaging of root tips in Arabidopsis lines showed that BrEXLB1 overexpression increases the size of the root elongation zone and induce primary root growth. Conversely, it reduced the seed germination rate. Further analyses with transgenic B. rapa lines overexpressing BrEXLB1 sense (OX) and antisense transcripts (OX-AS) confirmed that BrEXLB1 overexpression is positively associated with drought tolerance and photosynthesis during vegetative growth phases of B. rapa plants. Moreover, the altered expression of BrEXLB1 in transgenic lines differentially influenced the expression of predicted BrEXLB1 interacting genes like Bra001852 and Bra003006. Collectively, this study revealed that BrEXLB1 is associated with root development, drought tolerance, photosynthesis, and seed germination.

Modification of pituitary-adrenal feedback sensitivity in young rats by neonatal treatment with cortisol

1981 ◽  
Vol 96 (2) ◽  
pp. 252-257 ◽  
Author(s):  
M. S. Erskine ◽  
Edward Geller ◽  
Arthur Yuwiler
Keyword(s):  
Body Weight ◽  
Stress Response ◽  
Binding Capacity ◽  
Feedback Regulation ◽  
Plasma Corticosterone ◽  
Neonatal Treatment ◽  
Feedback Sensitivity ◽  
Increased Sensitivity ◽  
Corticosterone Response ◽  
Pre Treatment

Abstract. Neonatal exposure of rats to cortisol acetate was found to alter pituitary-adrenal feedback regulation at 20–25 days of age. Plasma levels of adrenocorticotrophin (ACTH) after ether stress were reduced in cortisol-treated rats pre-treated with 100 μg corticosterone/100 g body weight, while rats given vehicle neonatally did not show suppression of the ACTH response below levels in animals given saline only or not injected as pre-treatments. Neonatal cortisol increased sensitivity to dexamethasone in inhibition of the stress response; cortisol-treated animals had a reduced plasma corticosterone response to stress 3 h after pre-treatment with 1.25, 2.5, 25, or 250 μg dexamethasone/100 g body weight, while the stress response in animals given vehicle neonatally was not inhibited by the lowest dosage of dexamethasone. Neonatal cortisol treatment did not affect corticosteroidbinding globulin (CBG) binding capacity in plasma of 25-day-old animals. Thus, neonatal treatment with cortisol appears to increase feedback sensitivity to circulating corticosteroids at 20–25 days of age.

scholarly journals Retraction Note to: Integrated physiological and proteomic analysis of embryo and endosperm reveals central salt stress response proteins during seed germination of winter wheat cultivar Zhengmai 366

2019 ◽  
Vol 19 (1) ◽  
Author(s):  
Dongmiao Liu ◽  
Caixia Han ◽  
Xiong Deng ◽  
Yue Liu ◽  
Nannan Liu ◽  
...  
Keyword(s):  
Salt Stress ◽  
Stress Response ◽  
Seed Germination ◽  
Winter Wheat ◽  
Proteomic Analysis ◽  
Wheat Cultivar ◽  
Winter Wheat Cultivar ◽  
Salt Stress Response ◽  
Retraction Notice ◽  
Published Paper

The editor has retracted this article [1] because parts of Figs. 1 and 4 were duplicated from a previously published paper by the same authors [2] without appropriate disclosure. None of the authors have responded to any correspondence from the editor about publication of this retraction notice.

scholarly journals AtEXP2 Is Involved in Seed Germination and Abiotic Stress Response in Arabidopsis

PLoS ONE ◽  
2014 ◽  
Vol 9 (1) ◽  
pp. e85208 ◽  
Author(s):  
An Yan ◽  
Minjie Wu ◽  
Limei Yan ◽  
Rui Hu ◽  
Imran Ali ◽  
...  
Keyword(s):  
Abiotic Stress ◽  
Stress Response ◽  
Seed Germination ◽  
Abiotic Stress Response

Seed germination ecology and salt stress response in eight Mediterranean populations of Sarcopoterium spinosum (L.) Spach

2019 ◽  
Vol 34 (3) ◽  
pp. 110-121 ◽  
Author(s):  
Andrea Santo ◽  
Ludovica Dessì ◽  
Mariano Ucchesu ◽  
Magda Bou Dagher Kharrat ◽  
Ramy Charbel Sakr ◽  
...  
Keyword(s):  
Salt Stress ◽  
Stress Response ◽  
Seed Germination ◽  
Mediterranean Populations ◽  
Salt Stress Response ◽  
Germination Ecology ◽  
Sarcopoterium Spinosum

scholarly journals ERK Phosphorylates p66shcA on Ser36 and Subsequently Regulates p27kip1 Expression via the Akt-FOXO3a Pathway: Implication of p27kip1 in Cell Response to Oxidative Stress

2005 ◽  
Vol 16 (8) ◽  
pp. 3705-3718 ◽  
Author(s):  
Yuanyu Hu ◽  
Xueying Wang ◽  
Li Zeng ◽  
De-Yu Cai ◽  
Kanaga Sabapathy ◽  
...  
Keyword(s):  
Oxidative Stress ◽  
Stress Response ◽  
Cell Response ◽  
Phosphorylation Site ◽  
Feedback Regulation ◽  
Signal Propagation ◽  
Oxidative Stress Response ◽  
Down Regulation ◽  
Erk Activation ◽  
Promote Cell Survival

Mice deficient for p66shcA represent an animal model to link oxidative stress and aging. p66shcA is implicated in oxidative stress response and mitogenic signaling. Phosphorylation of p66shcA on Ser36 is critical for its function in oxidative stress response. Here we report the identification of ERK as the kinase phosphorylating p66shcA on Ser36. Activation of ERKs was necessary and sufficient for Ser36 phosphorylation. p66shcA interacted with ERK and was demonstrated to be a substrate for ERK, with Ser36 being the major phosphorylation site. Furthermore, in response to H2O2, inhibition of ERK activation repressed p66shcA-dependent phosphorylation of FOXO3a and the down-regulation of its target gene p27kip1. Down-regulation of p27 might promote cell survival, as p27 played a proapoptotic role in oxidative stress response. As a feedback regulation, Ser36 phosphorylated p66shcA attenuated H2O2-induced ERK activation, whereas p52/46shcA facilitated ERK activation, which required tyrosine phosphorylation of CH1 domain. p66shcA formed a complex with p52/46ShcA, which may provide a platform for efficient signal propagation. Taken together, the data suggest there exists an interplay between ERK and ShcA proteins, which modulates the expression of p27 and cell response to oxidative stress.

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