scholarly journals Alteration of Abiotic Stress Responsive Genes in Polygonum minus Roots by Jasmonic Acid Elicitation

10.5772/23397 ◽  
2011 ◽  
Author(s):  
Ismanizan Ismail ◽  
Mian-Chee Gor ◽  
Zeti-Azura Mohamed-Hussein ◽  
Zamri Zainal ◽  
Normah Mohd
Keyword(s):  
Abiotic Stress ◽  
Jasmonic Acid ◽  
Polygonum Minus ◽  
Stress Responsive Genes

scholarly journals Functions of Jasmonic Acid in Plant Regulation and Response to Abiotic Stress

2020 ◽  
Vol 21 (4) ◽  
pp. 1446 ◽  
Author(s):  
Jia Wang ◽  
Li Song ◽  
Xue Gong ◽  
Jinfan Xu ◽  
Minhui Li
Keyword(s):  
Transcription Factors ◽  
Abiotic Stress ◽  
Jasmonic Acid ◽  
Signaling Pathways ◽  
Signaling Pathway ◽  
Large Scale ◽  
Higher Plants ◽  
Complex Signal ◽  
Ja Signaling ◽  
Signal Network

Jasmonic acid (JA) is an endogenous growth-regulating substance, initially identified as a stress-related hormone in higher plants. Similarly, the exogenous application of JA also has a regulatory effect on plants. Abiotic stress often causes large-scale plant damage. In this review, we focus on the JA signaling pathways in response to abiotic stresses, including cold, drought, salinity, heavy metals, and light. On the other hand, JA does not play an independent regulatory role, but works in a complex signal network with other phytohormone signaling pathways. In this review, we will discuss transcription factors and genes involved in the regulation of the JA signaling pathway in response to abiotic stress. In this process, the JAZ-MYC module plays a central role in the JA signaling pathway through integration of regulatory transcription factors and related genes. Simultaneously, JA has synergistic and antagonistic effects with abscisic acid (ABA), ethylene (ET), salicylic acid (SA), and other plant hormones in the process of resisting environmental stress.

scholarly journals Crystal structure of DRIK1, a stress-responsive receptor-like pseudokinase, reveals the molecular basis for the absence of ATP binding

2020 ◽  
Author(s):  
Bruno Aquino ◽  
Viviane C. H. da Silva ◽  
Katlin B. Massirer ◽  
Paulo Arruda
Keyword(s):  
Crystal Structure ◽  
Abiotic Stress ◽  
Molecular Basis ◽  
Stress Protein ◽  
Structural Features ◽  
Kinase Domain ◽  
Atp Binding ◽  
Biotic And Abiotic Stress ◽  
Water Restriction ◽  
Stress Responsive Genes

Abstract Background: Plants reprogram metabolism and development to rapidly adapt to biotic and abiotic stress. Protein kinases play a significant role in this process by phosphorylating protein substrates that activate or inactivate signaling cascades that regulate cellular and metabolic adaptations. Despite their importance in plant biology, a notably small fraction of the plant kinomes has been studied to date. Results: In this report, we describe ZmDRIK1, a stress-responsive receptor-like pseudokinase whose expression is downregulated under water restriction. We show the structural features and molecular basis of the absence of ATP binding exhibited by ZmDRIK1. The ZmDRIK1 kinase domain lacks conserved amino acids that are essential for phosphorylation activity. The crystal structure of the ZmDRIK1 kinase domain revealed the presence of a spine formed by the side chain of the triad Leu240, Tyr363, and Leu375 that occludes the ATP binding pocket. Although ZmDRIK1 is unable to bind nucleotides, it does bind the small molecule ENMD-2076 which, in a cocrystal structure, revealed the potential to serve as a ZmDRIK1 inhibitor.Conclusion: ZmDRIK1 is a novel receptor-like pseudokinase responsive to biotic and abiotic stress. The absence of ATP binding and consequently, the absence of phosphorylation activity, was proven by the crystal structure of the apo form of the protein kinase domain. The expression profiling of the gene encoding ZmDRIK1 suggests this kinase may play a role in downregulating the expression of stress responsive genes that are not necessary under normal conditions. Under biotic and abiotic stress, ZmDRIK1 is down-regulated to release the expression of these stress-responsive genes.

scholarly journals Signatures of natural selection in abiotic stress-responsive genes of Solanum chilense

2018 ◽  
Vol 5 (1) ◽  
pp. 171198 ◽  
Author(s):  
Katharina B. Böndel ◽  
Tetyana Nosenko ◽  
Wolfgang Stephan
Keyword(s):  
Abiotic Stress ◽  
Natural Selection ◽  
Local Adaptation ◽  
Stress Factors ◽  
Abiotic Stress Response ◽  
Wild Tomato Species ◽  
Tomato Species ◽  
Abiotic Stress Factors ◽  
Solanum Chilense ◽  
Stress Responsive Genes

Environmental conditions are strong selective forces, which may influence adaptation and speciation. The wild tomato species Solanum chilense , native to South America, is exposed to a range of abiotic stress factors. To identify signatures of natural selection and local adaptation, we analysed 16 genes involved in the abiotic stress response and compared the results to a set of reference genes in 23 populations across the entire species range. The abiotic stress-responsive genes are characterized by elevated nonsynonymous nucleotide diversity and divergence. We detected signatures of positive selection in several abiotic stress-responsive genes on both the population and species levels. Local adaptation to abiotic stresses is particularly apparent at the boundary of the species distribution in populations from coastal low-altitude and mountainous high-altitude regions.

scholarly journals Biotic and abiotic stress-responsive genes are stimulated to resist drought stress in purple wheat

2020 ◽  
Vol 19 (1) ◽  
pp. 33-50 ◽  
Author(s):  
Xiao-lan LI ◽  
Xiang LÜ ◽  
Xiao-hong WANG ◽  
Qin PENG ◽  
Ming-sheng ZHANG ◽  
...  
Keyword(s):  
Abiotic Stress ◽  
Drought Stress ◽  
Biotic And Abiotic Stress ◽  
Stress Responsive Genes

Jasmonic acid: a key frontier in conferring abiotic stress tolerance in plants

2020 ◽  
Author(s):  
Ali Raza ◽  
Sidra Charagh ◽  
Zainab Zahid ◽  
Muhammad Salman Mubarik ◽  
Rida Javed ◽  
...  
Keyword(s):  
Abiotic Stress ◽  
Jasmonic Acid ◽  
Stress Tolerance ◽  
Abiotic Stress Tolerance
Sign in / Sign up

Export Citation Format

Share Document