First Report of <i>Pleurostomophora richardsiae</i> Causing Branch Dieback and Collar Rot of Olive in Istria, Croatia

Ivić, Dario; Tomić, Željko; Godena, Sara

doi:10.1094/pdis-04-18-0669-pdn

Cited by 8 publications

(5 citation statements)

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“…It also leads to brown streaks under the bark of the trunk, branches, and twigs. It was recognised as the most aggressive and first reported as a pathogen of olive (Ivic, Tomic, et Godena 2018; Calvo-Peña et al 2022). Moreover, in Spain and Turkey, it has been rshown as being an aggressive causal agent of grapevine trunk decline (Özben et al 2017).…”

Section: Resultsmentioning

confidence: 99%

In vitro biological control of Cedrus atlantica ‘s lignivorous fungi by the extracted essential oils from the infected wood

Chauiyakh,

El Fahime,

Aarabi

et al. 2023

International Wood Products Journal

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In Morroco, Cedarwood lignivorous fungi cause significant damage to cedar groves. The losses have been estimated to be more than 30% due to these fungi. This latter brings about two primary diseases known as M'jej and Saboune. The study tries to show the molecular identification of the lignivorous fungi of the Atlas cedar in the cedar groves of Tazekka and Azrou and their biological control by the essential oils extracted from both the healthy and infected cedarwood. Therefore, this molecular research has identified three phytopathogenic fungi:(Paecilomyces maximus, Pleurostoma richardsiae, and Alternaria tenuissima). The data analysed in this study has also confirmed that the oil extracted from Saboune-infected wood showed a noticeable fungistatic effect against these fungi, with a MIC reaching 1/500, followed by the EO extracted from M'jej-infected wood. However, the healthy cedarwood gave an EO without antifungal activity. A mixture of these three oils gave significant antifungal results.

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Section: Resultsmentioning

confidence: 99%

In vitro biological control of Cedrus atlantica ‘s lignivorous fungi by the extracted essential oils from the infected wood

Chauiyakh,

El Fahime,

Aarabi

et al. 2023

International Wood Products Journal

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“…Pathogen inoculation was performed by watering each plant with 25 mL of conidial suspension (10 8 conidia mL −1 ). Uninoculated control seedlings treated only with sterile distilled water were used as negative controls, while positive controls were inoculated with Fusarium oxysporum (Fo) and treated with sterile distilled water [ 32 ]. All A. lancea plants were grown in a growth chamber with a temperature of 26 °C and a 16 h photoperiod, and they were watered with sterile distilled water every 3 days.…”

Section: Methodsmentioning

confidence: 99%

Whole Genome Sequencing Reveals Novel Insights about the Biocontrol Potential of Burkholderia ambifaria CF3 on Atractylodes lancea

Du,

Wang,

et al. 2024

Microorganisms

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Root rot caused by Fusarium spp. is the most destructive disease on Atractylodes lancea, one of the large bulks and most common traditional herbal plants in China. In this study, we isolated a bacterial strain, CF3, from the rhizosphere soil of A. lancea and determined its inhibitory effects on F. oxysporum in both in vitro and in vivo conditions. To deeply explore the biocontrol potential of CF3, we sequenced the whole genome and investigated the key pathways for the biosynthesis of many antibiotic compounds. The results revealed that CF3 is a member of Burkholderia ambifaria, harboring two chromosomes and one plasmid as other strains in this species. Five antibiotic compounds were found that could be synthesized due to the existence of the bio-synthesis pathways in the genome. Furthermore, the synthesis of antibiotic compounds should be confirmed by in vitro experiments and novel compounds should be purified and characterized in further studies.

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“…Interestingly, since the OQDS outbreak occurred, other decline syndromes of olive trees characterized by a general dieback, canker and death of branches and twig wilting were reported in Italy (including Apulia) and other parts of the world. These were associated with a mycobiota in which some fungal taxa played major roles— Botryosphaeriaceae , Pleurostomophora richardsiae , Phaeoacremonium spp., Cytospora spp., Phaeomoniellales, Arthrinium marii , Neofabraea kienholzii , and Phlyctema vagabunda [ 9 , 10 , 11 , 12 , 13 , 14 , 15 , 16 , 17 , 18 , 19 , 20 , 21 ].…”

Section: Introductionmentioning

confidence: 99%

Identification and Characterization of Neofusicoccum stellenboschiana in Branch and Twig Dieback-Affected Olive Trees in Italy and Comparative Pathogenicity with N. mediterraneum

Manetti¹,

Brunetti²,

Lumia³

et al. 2023

JoF

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For about a decade, olive groves in Apulia (Southern Italy) have been progressively destroyed by Olive Quick Decline Syndrome (OQDS), a disease caused by the bacterium Xylella fastidiosa subsp. pauca (Xfp). Recently, we described an additional wilting syndrome affecting olive trees in that area. The botryosphaeriaceous fungus Neofusicoccum mediterraneum was found associated with the diseased trees, and its high virulence toward olive trees was demonstrated. Given the common features with Branch and Twig Dieback (BTD) of olive tree, occurring in Spain and California, we suggested that the observed syndrome was BTD. During our first survey, we also found a botryosphaeriaceous species other than N. mediterraneum. In the present article, we report the morphological and molecular characterization of this fungal species which we identified as Neofusicoccum stellenboschiana. In the study, we also included for comparison additional N. stellenboschiana isolates obtained from olive trees in Latium and Tuscany region (Central Italy). The occurrence of N. stellenboschiana in olive trees is reported here for the first time in the northern hemisphere. The pathogenicity and virulence were tested in nine inoculation trials, where the Apulian N. stellenboschiana isolate was compared with the isolate from Latium and with the Apulian isolate of N. mediterraneum. Both isolates of N. stellenboschiana proved pathogenic to olive trees. They caused evident bark canker and wood discolouration when inoculated at the base of the stem of two/three-year-old trees and on one-year-old twigs. However, virulence of N. stellenboschiana was significantly lower, though still remarkable, compared with N. mediterraneum in term of necrosis progression in the bark and the wood and capacity of wilting the twigs. Virulence of N. stellenboschiana and N. mediterraneum did not substantially change when inoculations were performed in spring/summer and in autumn, suggesting that these fungal species have the potential to infect and damage olive trees in all seasons. The high thermotolerance of N. stellenboschiana was also revealed with in vitro growth and survival tests. The high virulence of these Botryosphaeriaceae species highlights their contribution in BTD aetiology and the necessity to investigate right away their diffusion and, possibly, the role of additional factors other than Xfp in the general decline of olive groves in Apulia. Hence the importance of assessing the degree of overlap of BTD/Botryosphariaceae with OQDS/Xfp is discussed.

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First Report of Pleurostomophora richardsiae Causing Branch Dieback and Collar Rot of Olive in Istria, Croatia

Cited by 8 publications

References 1 publication

In vitro biological control of Cedrus atlantica ‘s lignivorous fungi by the extracted essential oils from the infected wood

In vitro biological control of Cedrus atlantica ‘s lignivorous fungi by the extracted essential oils from the infected wood

Whole Genome Sequencing Reveals Novel Insights about the Biocontrol Potential of Burkholderia ambifaria CF3 on Atractylodes lancea

Identification and Characterization of Neofusicoccum stellenboschiana in Branch and Twig Dieback-Affected Olive Trees in Italy and Comparative Pathogenicity with N. mediterraneum

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