World Library  

Add to Book Shelf
Flag as Inappropriate
Email this Book

Plos Pathogens : a Genetic Screen Reveals Arabidopsis Stomatal And, Volume 7

By Rathjen, John

Click here to view

Book Id: WPLBN0003962575
Format Type: PDF eBook :
File Size:
Reproduction Date: 2015

Title: Plos Pathogens : a Genetic Screen Reveals Arabidopsis Stomatal And, Volume 7  
Author: Rathjen, John
Volume: Volume 7
Language: English
Subject: Journels, Science, Pathogens
Collections: Periodicals: Journal and Magazine Collection (Contemporary), PLoS Pathogens
Publication Date:
Publisher: Plos


APA MLA Chicago

Rathjen, J. (n.d.). Plos Pathogens : a Genetic Screen Reveals Arabidopsis Stomatal And, Volume 7. Retrieved from

Description : Bacterial infection of plants often begins with colonization of the plant surface, followed by entry into the plant through wounds and natural openings (such as stomata), multiplication in the intercellular space (apoplast) of the infected tissues, and dissemination of bacteria to other plants. Historically, most studies assess bacterial infection based on final outcomes of disease and/or pathogen growth using whole infected tissues: few studies have genetically distinguished the contribution of different host cell types in response to an infection. The phytotoxin coronatine (COR) is produced by several pathovars of Pseudomonas syringae. COR-deficient mutants of P. s. tomato (Pst) DC3000 are severely compromised in virulence, especially when inoculated onto the plant surface. We report here a genetic screen to identify Arabidopsis mutants that could rescue the virulence of COR-deficient mutant bacteria. Among the susceptible to coronatine-deficient Pst DC3000 (scord) mutants were two that were defective in stomatal closure response, two that were defective in apoplast defense, and four that were defective in both stomatal and apoplast defense. Isolation of these three classes of mutants suggests that stomatal and apoplastic defenses are integrated in plants, but are genetically separable, and that COR is important for Pst DC3000 to overcome both stomatal guard cell- and apoplastic mesophyll cell-based defenses. Of the six mutants defective in bacterium-triggered stomatal closure, three are defective in salicylic acid (SA)-induced stomatal closure, but exhibit normal stomatal closure in response to abscisic acid (ABA), and scord7 is compromised in both SA- and ABA-induced stomatal closure. We have cloned SCORD3, which is required for salicylic acid (SA) biosynthesis, and SCORD5, which encodes an ATPbinding cassette (ABC) protein, AtGCN20/AtABCF3, predicted to be involved in stress-associated protein translation control. Identification of SCORD5 begins to implicate an important role of stress-associated protein translation in stomatal guard cell signaling in response to microbe-associated molecular patterns and bacterial infection.


Click To View

Additional Books

  • Plos Pathogens : Structural and Biochemi... (by )
  • Plos Pathogens : the Socs-box of Hiv-1 V... (by )
  • Plos Pathogens : Novel Mouse Xenograft M... (by )
  • Plos Pathogens : Nutrient Availability a... (by )
  • Plos Pathogens : an Extracellular Sidero... (by )
  • Plos Pathogens : Irgm is a Common Target... (by )
  • Plos Pathogens : Congenital Viral Infect... (by )
  • Plos Pathogens : X-box Binding Protein 1... (by )
  • Plos Pathogens : Sensitivity of Mitochon... (by )
  • Plos Pathogens : Influenza Virus Ribonuc... (by )
  • Plos Pathogens : Episomal Viral Cdnas Id... (by )
  • Plos Pathogens : Critical Role of Perfor... (by )
Scroll Left
Scroll Right


Copyright © World Library Foundation. All rights reserved. eBooks from World eBook Library are sponsored by the World Library Foundation,
a 501c(4) Member's Support Non-Profit Organization, and is NOT affiliated with any governmental agency or department.