Show document

A+ | A- | | SLO | ENG

Title: SIGNALING STUDIES IN THE EMERGING KIWIFRUIT PATHOGEN Pseudomonas syringae pv. actinidiae Authors: ID Venturi, Vittorio (Mentor) More about this mentor... ID Javvadi, Sree Gowrinadh (Author) Files: Sree_Gowrinadh_Javvadi.pdf (4,41 MB) MD5: E37B4749BC8C6EB0F05B489BFBD025BB   Language: English Work type: Doctoral dissertation Typology: 2.08 - Doctoral Dissertation Organization: FPŠ - Graduate School Abstract: In the past two decades emerging and re-emerging plant pathogens have caused new threats to the production of several economically important crops, one among them is P. syringae pv. actinidiae (PSA) which causes canker or leaf spot on kiwifruit plants. PSA enters plant through wounds and remains dormant in cortex tissue of the branches, and spreads in the tissue to cause severe symptoms from winter to early spring. The disease can be visualized by brown discoloration of buds, dark brown angular spots surrounded by yellow haloes on leaves, cankers with white to reddish (oxydation) exudate on twigs and trunks, fruit collapse, wilting and eventually plant mortality. Current control methods have their own significance in disease control, however there is considerable lack of clear understanding of PSA pathogenicity. Virulence of plant pathogens often relies on the synchronized/coordinated expression of pathogenicity factors via quorum sensing (QS). Therefore, investigations on QS in PSA may lead to develop novel disease control strategies and reliable methods to curb the disease. It is currently unknown whether PSA produces a QS signal molecule thus the aim of this thesis is to investigate whether PSA possesses a QS system. As genome mining did not reveal the presence of any currently known QS system, this study initially by metabolomics was aimed at identifying potentially low molecular weight secondary metabolite QS molecules produced by PSA. Azelaic acid was discovered to be produced by PSA, this is the first report of azelaic acid production by bacteria. The characterization and possible role of azelaic acid in QS is presented. Since azelaic acid is ubiquitous in nature, in addition to determining its biological role, the catabolism of azelaic acid in bacteria using the efficient degrader Pseudomonas nitroreducens DSM 9128 was also studied. Keywords: Quorum sensing, Azelaic acid, Metabolomics, Catabolism Place of publishing: Nova Gorica Year of publishing: 2017 PID: 20.500.12556/RUNG-3486  COBISS.SI-ID: 4974587  NUK URN: URN:SI:UNG:REP:ZKM02EHD Publication date in RUNG: 19.12.2017 Views: 6109 Downloads: 218 Metadata:    Cite this work Plain text BibTeX EndNote XML EndNote/Refer RIS ABNT ACM Ref AMA APA Chicago 17th Author-Date Harvard IEEE ISO 690 MLA Vancouver : JAVVADI, Sree Gowrinadh, 2017, SIGNALING STUDIES IN THE EMERGING KIWIFRUIT PATHOGEN Pseudomonas syringae pv. actinidiae [online]. Doctoral dissertation. Nova Gorica. [Accessed 23 April 2025]. Retrieved from: https://repozitorij.ung.si/IzpisGradiva.php?lang=eng&id=3392 Copy citation

Average score: 0.5 1 1.5 2 2.5 3 3.5 4 4.5 5 (0 votes) Your score: Voting is allowed only for logged in users. Share: Similar works from our repository: Svit Program for early detection of colon cancer and rectal cancer among the younger population and the role of nursing Preventive screening programs for early detection cancer ZORA, DORA, SVIT Impact of prevention on early detection of breast cancer Similar works from other repositories: Cetuksimab Cetuksimab Državni program organiziranega presejanja in zgodnjega odkrivanja raka na debelem črevesu in danki The organization of Program Svit Colorectal cancer imaging Hover the mouse pointer over a document title to show the abstract or click on the title to get all document metadata.

Back