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Naslov: SIGNALING STUDIES IN THE EMERGING KIWIFRUIT PATHOGEN Pseudomonas syringae pv. actinidiae Avtorji: ID Venturi, Vittorio (Mentor) Več o mentorju... ID Javvadi, Sree Gowrinadh (Avtor) Datoteke: Sree_Gowrinadh_Javvadi.pdf (4,41 MB) MD5: E37B4749BC8C6EB0F05B489BFBD025BB   Jezik: Angleški jezik Vrsta gradiva: Doktorsko delo/naloga Tipologija: 2.08 - Doktorska disertacija Organizacija: FPŠ - Fakulteta za podiplomski študij Opis: 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. Ključne besede: Quorum sensing, Azelaic acid, Metabolomics, Catabolism Kraj izida: Nova Gorica Leto izida: 2017 PID: 20.500.12556/RUNG-3486  COBISS.SI-ID: 4974587  NUK URN: URN:SI:UNG:REP:ZKM02EHD Datum objave v RUNG: 19.12.2017 Število ogledov: 6115 Število prenosov: 218 Metapodatki:    Citiraj gradivo Navadno besedilo 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 [na spletu]. Doktorska disertacija. Nova Gorica. [Dostopano 23 april 2025]. Pridobljeno s: https://repozitorij.ung.si/IzpisGradiva.php?lang=slv&id=3392 Kopiraj citat

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