Biologija, simptomatologija i mjere suzbijanja bakterioznog odumiranja trešnje na području Umaga

master's thesis

• Title (english): Biology, symptomatology and control measures of bacterial dieback of cherries in the Umag area
• Author: Marika Turčinov
• Mentor: Edyta Đermić (mentor)
• Committee member: Edyta Đermić (predsjednik povjerenstva)
• Committee member: Kristina Batelja Lodeta (član povjerenstva)
• Committee member: Ivan Juran (član povjerenstva)
• Granter: University of Zagreb; Faculty of Agriculture; (Plant Pathology); Zagreb
• Defense date and country: 2019-07-12, Croatia
• Scientific / art field, discipline and subdiscipline: BIOTECHNICAL SCIENCES; Agronomy

Abstract

U posljednjih nekoliko proizvodnih sezona učestale su dojave o pojavi smolotečine i sušenju izbojaka, grana i čitavih stabala trešnje, a sumnja se na bakterijsko odumiranje grana koštičavih voćaka. Poznati uzročnici ove bolesti su bakterijske vrste Pseudomonas syringae pv. syringae i Pseudomonas syringae pv. morsprunorum. Bakterija Pseudomonas syringae pv. morsprunorum u zimskom razdoblju izaziva rak rane, dok se u proljeće razvijaju pjege na listovima. Kod zaraze bakterijom Pseudomonas syringae pv. syringae simptomi se najčešće javljaju u vidu pjega na listovima koje su eliptične ili okruglaste, često crne, tamnosmeđe ili tamnocrvenkaste boje. Izvršena je izolacija bakterija iz simptomatičnog tkiva zaraženih grančica trešnje. Dobivena su dva različita bakterijska izolata. Svakom izolatu određena je Gram reakcija i proveden je test na proizvodnju fluorescirajućeg pigmenta. Provedbom testa hipersenzitivne reakcije na duhanu (Nicotiana tabacum var. Samsun) potvrđena je patogenost obaju testiranih izolata. Zaštita od bakterijskih bolesti uzrokovanih navedenim bakterijama temelji se na preventivnim agrotehničkim i kemijskim mjerama.

Abstract (english)

In recent production seasons there have been frequent reports of the occurrence of slimy resin and drying of shoots, branches and whole cherry trees, and bacterial dieback was suspected. The known pathological agents causing disease suspected are bacterial species of Pseudomonas syringae pv. syringae and Pseudomonas syringae pv. morsprunorum. The bacterium Pseudomonas syringae pv. morsprunorum during the winter period causes cancers and wounds, while in the spring causes necrotic leafspots. During Pseudomonas syringae pv. syringae symptoms usually occur in the form of elliptic or round leafspots, often in black, dark brown or dark reddish color. In this paper, the isolation of bacteria from the symptomatic tissue of the symptomatic cherry sprigs was performed. Two different bacterial isolates were obtained. Each isolate was tested for Gram reaction and for the production of fluorescen pigment. The pathogenicity of the two isolates was determined by hypersensitivity reaction on tobacco (Nicotiana tabacum var. Samsun). The control of bacterial diseases caused by these bacteria is based on preventive agrotechnical and chemical measures.

• Keywords: trešnja; Pseudomonas syringae pv. syringae; Pseudomonas syringae pv. morsprunorum; bakterijsko odumiranje; hipersenzitivna reakcija
• Keywords (english): cherry; Pseudomonas syringae pv. syringae; Pseudomonas syringae pv. morsprunorum; bacterial dieback; hypersensitive reaction
• Language: croatian
• URN:NBN: urn:nbn:hr:204:896382
• Study programme: Title: Phytomedicine; Study programme type: university; Study level: graduate; Academic / professional title: magistar/ magistra inženjer/inženjerka fitomedicine (magistar/ magistra inženjer/inženjerka fitomedicine)
• Type of resource: Text
• File origin: Born digital
• Access conditions: Access restricted to students and staff of home institution
• Created on: 2019-07-15 11:12:45