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Iskalni niz: "avtor" (Ana Brglez) .

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1.
An outbreak of Verticillium dahliae on sycamore maple in a forest stand in Slovenia
Ana Brglez, Zina Devetak, Nikica Ogris, Sebastjan Radišek, Barbara Piškur, 2024, izvirni znanstveni članek

Povzetek: Verticillium dahliae Kleb., the causal agent of Verticillium wilts, is a devastating plant disease affecting many plant species. Fungus V. dahliae was detected in a partially artificially established Acer pseudoplatanus L. forest stand in central Slovenia. This finding incited further study about the risk of different sources of V. dahliae isolates for maples in forests and the pathogenicity of three V. dahliae isolates of different origins was tested on saplings of A. pseudoplatanus, A. platanoides L., and A. campestre L. The inoculated saplings exhibited disease symptoms, i.e., leaf necrosis and wilting. At the end of the pathogenicity test, typical xylem browning was visible on the cross-sections, and the pathogen was successfully re-isolated. The isolates showed significant differences in their pathogenicity to specific maple hosts, with the agricultural isolate (originated from bell pepper) being the most aggressive on all three maple species. The disease severity index (DSI) and relative area under the disease progress curve (rAUDPC), as well as the success of re-isolation, indicate that A. platanoides is the most susceptible to inoculation with V. dahliae. In addition, significant differences in sapling biomass were observed between treated and control plants. These results suggest that maples in forest stands are threatened by V. dahliae, and biosecurity measures should be considered and implemented in forest management to reduce the transmission and potential spread of the pathogen.
Ključne besede: Verticillium wilt, Acer spp., pathogenicity test, Disease severity index, DSI, Area under the disease progress curve, AUDPC, biosecurity
Objavljeno v DiRROS: 07.02.2024; Ogledov: 176; Prenosov: 78
.pdf Celotno besedilo (1,75 MB)
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2.
Patogenost izolatov izbranih vrst gliv na Pinus sylvestris L. IN P. nigra Arnold
Ana Brglez, Barbara Piškur, Nikica Ogris, 2023, izvirni znanstveni članek

Povzetek: Na sadikah rdečega in črnega bora smo testirali patogenost osmih izbranih izolatov gliv (Corinectria fuckeliana, Diaporthe eres, Diplodia pinea, Fusarium sp. 1 in 2, Fusicolla sp., Nectria dematiosa in Tympanis sp.), ki smo jih izolirali iz obolelih borovih dreves v Sloveniji v letih 2020 in 2021. Inokulirali smo skupno 115 sadik borov (vključno s kontrolo), periodično smo preverjali njihovo zdravstveno stanje in ob prvih znakih sušenja opravili reizolacije iz robov nastalih nekroz. Reizolacije so bile uspešne le v primeru inokulacije z vrstami gliv Diplodia pinea, Diaporthe eres in Fusarium sp. 2. Povprečna dolžina nekroz sadik rdečega bora, inokuliranih z D. pinea, Di. eres in Tympanis sp., se je statistično značilno razlikovala od kontrolnih sadik (p < 0,05). Pri sadikah črnega bora pa so se za statistično značilne izkazale povprečne dolžine nekroz pri kontroli in inokulacijah z glivama D. pinea in Tympanis sp. (p < 0,05).
Ključne besede: test patogenosti, reizolacije, Pinus sylvestris, rdeči bor, Pinus nigra, črni bor
Objavljeno v DiRROS: 25.01.2024; Ogledov: 412; Prenosov: 157
.pdf Celotno besedilo (2,17 MB)
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Poročilo o preskusu št.: LVG 2023-077 : vzorec št. 2023/00482
Ana Brglez, 2023, izvedensko mnenje, arbitražna odločba

Ključne besede: varstvo gozdov, morfološke analize, črna bulavost leske, navadna leska, Corylus avellana
Objavljeno v DiRROS: 25.08.2023; Ogledov: 220; Prenosov: 0

5.
Diversity of phytophthora species involved in new diseases of mountain vegetation in Europe with the description of phytophthora pseudogregata sp. nov.
Carlo Bregant, Giovanni Rossetto, Letizia Meli, Nicolò Sasso, Lucio Montecchio, Ana Brglez, Barbara Piškur, Nikica Ogris, Lucia Maddau, Benedetto Teodoro Linaldeddu, 2023, izvirni znanstveni članek

Povzetek: New and emerging Phytophthora-related diseases in small trees, shrubs and herbaceous plants typical of subalpine vegetation have recently been observed in Italy and Slovenia. Diseased plants showed a complex symptomatology including foliar necrosis, fruit rot, shoot blight and branch bleeding cankers. Since little information is available about the aetiology of these aerial Phytophthora diseases, from 2019 to 2022, field surveys were conducted in 54 sites to define the occurrence, distribution and impact of the Phytophthora species on mountain vegetation. A total of 360 Phytophthora isolates were obtained from 397 samples collected from 33 herbaceous and woody host species. Based on phylogenetic analysis and morphometric data, 17 Phytophthora species were identified: P. pseudosyringae (201 isolates), P. plurivora (54), P. gonapodyides (21), P. ilicis (20), P. alpina (17), P. acerina (11), P. cactorum (7), P. pseudocryptogea (6), P. cambivora (5), P. idaei (4), P. psychrophila (3), P. bilorbang (2), P. chlamydospora (2), P. hedraiandra (1), P. kelmanii (1), P. rosacearum (1) and P. syringae (1). In addition, three isolates of a new putative Phytophthora species obtained from Alnus viridis, Juniperus communis and Rhododendron ferrugineum are described here as Phytophthora pseudogregata sp. nov. Overall, the results highlighted an unexpectedly high diversity of Phytophthora species in mountain areas, with many species able to cause aerial infections due to the production of caducous sporangia.
Ključne besede: alpine regions, emerging disease, oomycetes, foliar necrosis, ITS clade 6, phylogeny
Objavljeno v DiRROS: 01.08.2023; Ogledov: 298; Prenosov: 220
.pdf Celotno besedilo (6,74 MB)
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6.
Poročilo o preskusu št.: LVG 2023-057 : vzorec št. 2023/00269
Ana Brglez, 2023, izvedensko mnenje, arbitražna odločba

Ključne besede: varstvo gozdov, morfološke analize, Anisogramma anomala, črna bulavost leske, Corylus
Objavljeno v DiRROS: 19.07.2023; Ogledov: 230; Prenosov: 0

7.
Poročilo o preskusu št.: LVG 2023-061 : vzorec št. 2023/00057
Barbara Piškur, Maarten De Groot, Ana Brglez, Špela Hočevar, Špela Jagodic, Tine Hauptman, Nikica Ogris, 2023, izvedensko mnenje, arbitražna odločba

Ključne besede: varstvo gozdov, morfološke analize, glive
Objavljeno v DiRROS: 17.07.2023; Ogledov: 254; Prenosov: 80
.pdf Celotno besedilo (1,15 MB)

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Poročilo o preskusu št.: LVG 2023-052 : vzorec št. 2023/00177
Nikica Ogris, Ana Brglez, Špela Hočevar, 2023, izvedensko mnenje, arbitražna odločba

Ključne besede: varstvo gozdov, morfološke analize, navadna smreka, Picea abies, poškodbe iglic in mladih poganjkov
Objavljeno v DiRROS: 07.07.2023; Ogledov: 248; Prenosov: 81
.pdf Celotno besedilo (1,13 MB)

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Poročilo o preskusu št.: LVG 2023-050 : vzorec št. 2023/00222
Tine Hauptman, Špela Hočevar, Ana Brglez, 2023, izvedensko mnenje, arbitražna odločba

Ključne besede: varstvo gozdov, morfološke analize, Geosmithia morbida, bolezen tisočerih rakov, Juglans
Objavljeno v DiRROS: 05.07.2023; Ogledov: 274; Prenosov: 0

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