Phenotypic, Physiological, and Molecular Evaluation of Rice Chilling Stress Response at the Vegetative Stage

2012 ◽  
pp. 227-241 ◽  
Author(s):  
Benildo G. de los Reyes ◽  
Song Joong Yun ◽  
Venura Herath ◽  
Fuyu Xu ◽  
Myoung Ryoul Park ◽  
...  
Keyword(s):  
Stress Response ◽  
Chilling Stress ◽  
Vegetative Stage ◽  
Molecular Evaluation

Chilling stress response of postemergent cotton seedlings

2008 ◽  
Vol 134 (3) ◽  
pp. 430-439 ◽  
Author(s):  
Benjamin P. DeRidder ◽  
Steven J. Crafts-Brandner
Keyword(s):  
Stress Response ◽  
Chilling Stress

scholarly journals Effect of chilling acclimation on germination and seedlings response to cold in different seed coat colored wheat (Triticum aestivum L.)

2021 ◽  
Vol 21 (1) ◽  
Author(s):  
Paulina Calderon Flores ◽  
Jin Seok Yoon ◽  
Dae Yeon Kim ◽  
Yong Weon Seo
Keyword(s):  
Stress Response ◽  
Seed Coat ◽  
Biosynthetic Pathway ◽  
Coat Color ◽  
Chilling Stress ◽  
Seed Coat Color ◽  
Ros Scavenging ◽  
Flavonoid Biosynthetic Pathway ◽  
Scavenging Enzymes ◽  
Ros Scavenging Enzymes

Abstract Background Flavonoids can protect plants against extreme temperatures and ROS due to their antioxidant activities. We found that deep-purple seed coat color was controlled by two gene interaction (12:3:1) from the cross between yellow and deep-purple seed coat colored inbreds. F2:3 seeds were grouped in 3 by seed coat color and germinated under chilling (4 °C) and non-acclimated conditions (18 °C) for a week, followed by normal conditions (18 °C) for three weeks and a subsequent chilling stress (4 °C) induction. We analyzed mean daily germination in each group. Additionally, to study the acclimation in relationship to the different seed coat colors on the germination ability and seedling performances under the cold temperatures, we measured the chlorophyll content, ROS scavenging activity, and expression levels of genes involved in ROS scavenging, flavonoid biosynthetic pathway, and cold response in seedlings. Results The results of seed color segregation between yellow and deep purple suggested a two-gene model. In the germination study, normal environmental conditions induced the germination of yellow-seed, while under chilling conditions, the germination ratio of deep purple-seed was higher than that of yellow-colored seeds. We also found that the darker seed coat colors were highly responsive to cold acclimation based on the ROS scavenging enzymes activity and gene expression of ROS scavenging enzymes, flavonoid biosynthetic pathway and cold responsive genes. Conclusions We suggest that deep purple colored seed might be in a state of innate pre-acquired stress response state under normal conditions to counteract stresses in a more effective way. Whereas, after the acclimation, another stress should enhance the cold genes expression response, which might result in a more efficient chilling stress response in deep purple seed seedlings. Low temperature has a large impact on the yield of crops. Thus, understanding the benefit of seed coat color response to chilling stress and the identification of limiting factors are useful for developing breeding strategies in order to improve the yield of wheat under chilling stress.

scholarly journals Effects of salt and low light intensity during the vegetative stage on susceptibility of rice to male sterility induced by chilling stress during the reproductive stage

2016 ◽  
Vol 19 (4) ◽  
pp. 497-507 ◽  
Author(s):  
Takemasa Koumoto ◽  
Naoko Saito ◽  
Naohiro Aoki ◽  
Toshiki Iwasaki ◽  
Shigenao Kawai ◽  
...  
Keyword(s):  
Light Intensity ◽  
Male Sterility ◽  
Chilling Stress ◽  
Reproductive Stage ◽  
Vegetative Stage ◽  
Low Light ◽  
Low Light Intensity

scholarly journals Effect of Chilling on Respiration and Induction of Cyanide-resistant Respiration in Cucumber Roots

HortScience ◽  
1995 ◽  
Vol 30 (4) ◽  
pp. 775D-775
Author(s):  
Eleazar Reyes ◽  
Paul H. Jennings
Keyword(s):  
Stress Response ◽  
Cucumis Sativus ◽  
Chilling Stress ◽  
Cucumber Seedling ◽  
Seedling Roots ◽  
Cucumber Roots ◽  
Differential Responses ◽  
Chilling Treatment ◽  
Cyanide Resistant Respiration

The effect of chilling stress on induction of the cyanide-resistant pathway was investigated using roots of 3-day-old cucumber (Cucumis sativus L.) grown at 26C and then chilled at 2C, 10C, or 15C for 24, 48, 72, and 96 h. A 24-h post-chilling treatment was imposed on different sets of chilled cucumber roots at 26C. Exposing seedlings to 2C, 10C, and 15C, as well as to a post-chilling treatment, induced differential responses in the activity of the cyanide-resistant pathway. Cucumber seedling roots exhibited an increase in the cyanide-resistant pathway after a 96-h chilling treatment at 2C. The involvement of the cyanide-resistant pathway in the chilling stress response will be discussed.

scholarly journals Differential transcriptome profiling of chilling stress response between shoots and rhizomes of Oryza longistaminata using RNA sequencing

PLoS ONE ◽  
2017 ◽  
Vol 12 (11) ◽  
pp. e0188625 ◽  
Author(s):  
Ting Zhang ◽  
Liyu Huang ◽  
Yinxiao Wang ◽  
Wensheng Wang ◽  
Xiuqin Zhao ◽  
...  
Keyword(s):  
Stress Response ◽  
Rna Sequencing ◽  
Chilling Stress ◽  
Transcriptome Profiling ◽  
Oryza Longistaminata

CarR, a MarR-family regulator from Corynebacterium glutamicum, modulated antibiotic and aromatic compound resistance

2019 ◽  
Vol 476 (21) ◽  
pp. 3141-3159 ◽  
Author(s):  
Meiru Si ◽  
Can Chen ◽  
Zengfan Wei ◽  
Zhijin Gong ◽  
GuiZhi Li ◽  
...  
Keyword(s):  
Stress Response ◽  
Ligand Binding ◽  
Corynebacterium Glutamicum ◽  
Conformational Changes ◽  
Cysteine Oxidation ◽  
Transcriptional Regulatory ◽  
Ligand Free ◽  
Redox Sensing

Abstract MarR (multiple antibiotic resistance regulator) proteins are a family of transcriptional regulators that is prevalent in Corynebacterium glutamicum. Understanding the physiological and biochemical function of MarR homologs in C. glutamicum has focused on cysteine oxidation-based redox-sensing and substrate metabolism-involving regulators. In this study, we characterized the stress-related ligand-binding functions of the C. glutamicum MarR-type regulator CarR (C. glutamicum antibiotic-responding regulator). We demonstrate that CarR negatively regulates the expression of the carR (ncgl2886)–uspA (ncgl2887) operon and the adjacent, oppositely oriented gene ncgl2885, encoding the hypothetical deacylase DecE. We also show that CarR directly activates transcription of the ncgl2882–ncgl2884 operon, encoding the peptidoglycan synthesis operon (PSO) located upstream of carR in the opposite orientation. The addition of stress-associated ligands such as penicillin and streptomycin induced carR, uspA, decE, and PSO expression in vivo, as well as attenuated binding of CarR to operator DNA in vitro. Importantly, stress response-induced up-regulation of carR, uspA, and PSO gene expression correlated with cell resistance to β-lactam antibiotics and aromatic compounds. Six highly conserved residues in CarR were found to strongly influence its ligand binding and transcriptional regulatory properties. Collectively, the results indicate that the ligand binding of CarR induces its dissociation from the carR–uspA promoter to derepress carR and uspA transcription. Ligand-free CarR also activates PSO expression, which in turn contributes to C. glutamicum stress resistance. The outcomes indicate that the stress response mechanism of CarR in C. glutamicum occurs via ligand-induced conformational changes to the protein, not via cysteine oxidation-based thiol modifications.

Eustress: The Positive Stress Response In Two Samples Of Nurses

2002 ◽  
Author(s):  
Bret L. Simmons ◽  
Debra L. Nelson
Keyword(s):  
Stress Response ◽  
Two Samples
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