scholarly journals The ColR/ColS Two-Component System Plays Multiple Roles in the Pathogenicity of the Citrus Canker Pathogen Xanthomonas citri subsp. citri

2011 ◽  
Vol 193 (7) ◽  
pp. 1590-1599 ◽  
Author(s):  
Q. Yan ◽  
N. Wang
Keyword(s):  
Citrus Canker ◽  
Multiple Roles ◽  
Xanthomonas Citri ◽  
Two Component System ◽  
Component System ◽  
Canker Pathogen ◽  
Two Component

scholarly journals Diffusible Signal Factor-Mediated Quorum Sensing Plays a Central Role in Coordinating Gene Expression of Xanthomonas citri subsp. citri

2012 ◽  
Vol 25 (2) ◽  
pp. 165-179 ◽  
Author(s):  
Yinping Guo ◽  
Yanping Zhang ◽  
Jian-Liang Li ◽  
Nian Wang
Keyword(s):  
Quorum Sensing ◽  
Wild Type Strain ◽  
Xanthomonas Citri ◽  
Two Component System ◽  
Signal Molecule ◽  
Component System ◽  
Signal Perception ◽  
Two Component ◽  
Diffusible Signal Factor ◽  
Unique Genes

Diffusible signal factor (DSF) family signal-mediated quorum sensing (QS) has been identified in many gram-negative bacteria. This QS pathway of Xanthomonas spp. consists of three major QS components: RpfF, RpfC, and RpfG. The rpfF gene encodes a putative enoyl-CoA hydratase that catalyzes the synthesis of the signal molecule. RpfC and RpfG serve as a two-component system for the perception and transduction of the extracellular DSF family signals. In order to further characterize the QS regulatory network in Xanthomonas citri subsp. citri, we investigated the RpfF, RpfC, and RpfG regulons by using transcriptome analyses. Comparison of the transcriptomes of the QS mutants (rpfF, rpfC, and rpfG) with that of the wild-type strain revealed a core group of genes controlled by all three QS components, suggesting that the RpfC-RpfG two-component system is a major and conserved signal perception and transduction system for DSF family signal-mediated QS in X. citri subsp. citri. The unique genes controlled by RpfF alone indicate the complexity of the QS pathway and the involvement of additional sensory mechanisms in X. citri subsp. citri. The unique genes controlled by RpfC and RpfG, respectively, support the possibility that RpfC and RpfG play broader roles in gene regulation other than transduction of DSF signals.

The role of PhoP/PhoQ two component system in regulating stress adaptation in Cronobacter sakazakii

2021 ◽  
pp. 103851
Author(s):  
Yan Ma ◽  
Yingying Zhang ◽  
Ke Chen ◽  
Lingzhu Zhang ◽  
Yibei Zhang ◽  
...  
Keyword(s):  
Stress Adaptation ◽  
Cronobacter Sakazakii ◽  
Two Component System ◽  
Component System ◽  
Two Component

The two-component system ActJK is involved in acid stress tolerance and symbiosis in Sinorhizobium meliloti

2021 ◽  
Vol 329 ◽  
pp. 80-91
Author(s):  
Francisco J. Albicoro ◽  
Walter O. Draghi ◽  
María C. Martini ◽  
María E. Salas ◽  
G.A. Torres Tejerizo ◽  
...  
Keyword(s):  
Stress Tolerance ◽  
Sinorhizobium Meliloti ◽  
Acid Stress ◽  
Two Component System ◽  
Component System ◽  
Two Component

scholarly journals Analysis of reliability of systems with component-wise storages

2018 ◽  
Vol 58 ◽  
pp. 02024 ◽  
Author(s):  
Yuriy E. Obzherin ◽  
Stanislav M Sidorov ◽  
Mikhail M Nikitin
Keyword(s):  
Phase Space ◽  
Energy Systems ◽  
Two Component System ◽  
Additional Time ◽  
Component System ◽  
Time Redundancy ◽  
Reliability Characteristics ◽  
Two Component ◽  
Semi Markov Processes ◽  
Time Reserve

Time redundancy is a method of increasing the reliability and efficiency of the operation of systems for various purposes, in particular, energy systems. A system with time redundancy is given additional time (a time reserve) for restoring characteristics. In this paper, based on the theory of semi-Markov processes with a common phase space of states, a semi-Markov model of a two-component system with a component-wise instantly replenished time reserve is constructed. The stationary reliability characteristics of the system under consideration are determined.

Monte Carlo Simulation of Electronic Excitation Migrationand Trappingin Disordered Two-Component Systems. A Comparison with Analytical Theories

1989 ◽  
Vol 44 (4) ◽  
pp. 257-261 ◽  
Author(s):  
Sławomir Błonski ◽  
Czesław Bojarski
Keyword(s):  
Monte Carlo ◽  
Electronic Excitation ◽  
Two Component System ◽  
Component System ◽  
Steady State Fluorescence ◽  
Donor And Acceptor ◽  
Component Systems ◽  
Two Component ◽  
Two Component Systems ◽  
Viscous Solution

Abstract Monte Carlo simulations of quantum yield and anisotropy of fluorescence in two-component systems have been conducted with various donor and acceptor concentrations and Förster radii ratios RDAO/RDDO. The influence of excitation migration and trapping on the fluorescence of the viscous solution has been considered. The results of the simulations have shown that steady-state fluorescence of a two-component system depends on the RDAO/RDDO ratio as predicted in LAF theory.

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