Fusarium euwallaceae, symbiont of the paninvasive polyphagous shot hole borer, is pathogenic to cultivated but not wild olive trees in South Africa DOI Creative Commons
Casparus J. Crous, Francois Roets

Journal of Plant Pathology, Год журнала: 2024, Номер unknown

Опубликована: Июнь 11, 2024

Abstract Fusarium euwallaceae , vectored by the paninvasive polyphagous shot hole borer beetle ( Euwallacea fornicatus ), is an emerging threat to trees globally. Proven pathogenic cultivated deciduous fruits in South Africa, it recently has been isolated from European Olea europaea subsp. ) and native African cuspidata olive. This potentially threatens both commercial production species conservation. However, pathogenicity these unknown. Three isolates were used trials of F. towards olives. caused significantly longer lesions than controls vascular tissues inoculated olive trees, whereas no difference was observed for We therefore report first time that but not As this fungus occludes affected xylem tissues, thus water flow, fruit oil might be hampered during droughts, which are predicted increase severity frequency main region olives planted Africa.

Язык: Английский

Monitoring urban biological invasions using citizen science: the polyphagous shot hole borer (Euwallacea fornicatus) DOI Creative Commons
Luke J. Potgieter, Marc W. Cadotte, Francois Roets

и другие.

Journal of Pest Science, Год журнала: 2024, Номер 97(4), С. 2073 - 2085

Опубликована: Янв. 27, 2024

Benefits provided by urban trees are increasingly threatened non-native pests and pathogens. Monitoring of these invasions is critical for the effective management conservation tree populations. However, a shortage professionally collected species occurrence data major impediment to assessments biological in areas. We applied from iNaturalist develop protocol monitoring using polyphagous shot hole borer (PSHB) invasion two areas South Africa. records all known PSHB reproductive host were used together with on localities sites processing plant biomass map priority detecting new expanding infestations. Priority also identified distribution

Язык: Английский

Процитировано

12

Acclimation effects on thermal locomotor performance of the invasive Polyphagous Shot Hole Borer beetle, Euwallacea fornicatus (Coleoptera: Curculionidae: Scolytinae) DOI Creative Commons

Madeleine Pienaar,

Anandi Bierman, Francois Roets

и другие.

Journal of Thermal Biology, Год журнала: 2025, Номер unknown, С. 104068 - 104068

Опубликована: Фев. 1, 2025

The Polyphagous Shot Hole Borer (PSHB; Euwallacea fornicatus, Coleoptera: Curculionidae: Scolytinae) is an invasive and destructive tree pest. To assess whether thermal acclimation influences E. fornicatus locomotion performance (i.e., induced plastic responses) that may influence invasion potential, beetles were acclimated to three temperatures (18 °C, 25 32 °C), four traits measured across six (13 18 23 28 33 °C 38 °C) per group construct curves, capturing critical minimum (Tmin), maximum (Tmax), breadth (Tbr), optimal rate (Umax). Substantial plasticity of curves was found in fornicatus. Generally, cold increased the range several locomotor without affecting levels, thereby supporting colder-is-better hypothesis. consequences these responses, using established here, movement rates at-risk orchard area South Africa predicted seasons while considering artificial warm spells. Cold-acclimated exhibited highest cumulative distance traveled both summer winter, warm-acclimated had lowest. Therefore, short-term variation significantly influenced performance, with notably improving dispersal a wide conditions. These findings highlight importance recent history when predicting potential. By integrating data microclimatic conditions functional models, this study offers valuable insights for spread, informing targeted management strategies, refining spatially explicit risk assessments mitigate impacts

Язык: Английский

Процитировано

1

Detection of Fusarium euwallaceae and its vector Euwallacea fornicatus on pear (Pyrus communis) and in deciduous fruit orchards in South Africa DOI Creative Commons
Karyn Engelbrecht,

I. Van W Raubenheimer,

Trudy Paap

и другие.

Australasian Plant Disease Notes, Год журнала: 2024, Номер 19(1)

Опубликована: Янв. 18, 2024

Abstract We present the first report of Fusarium euwallaceae and its ambrosia beetle vector Euwallacea fornicatus in deciduous fruit tree orchards South Africa. , is shown to be pathogenic pear ( Pyrus communis ) can establish viable colonies this host.

Язык: Английский

Процитировано

5

Identification and pathogenicity of Fusarium species associated with wilting and crown rot in almond (Prunus dulcis) DOI Creative Commons
Ana López‐Moral, Begoña I. Antón‐Domínguez, M. Lovera

и другие.

Scientific Reports, Год журнала: 2024, Номер 14(1)

Опубликована: Март 8, 2024

Abstract Severe Fusarium wilt and crown root symptoms were observed in almond orchards Portugal. The present study elucidates the etiology of disease through molecular, phenotypic, pathogenic characterization. Three isolates from Portugal tested 12 Spain included for comparative purposes. Their identity was inferred by phylogenetic analysis combining tef 1 rpb 2 sequences. Portuguese identified as oxysporum sensu stricto ( s.s. ), Spanish nirenbergiae , F. proliferatum redolens sambucinum sp. Fungal colonies conidia characterized on potato dextrose agar (PDA) Synthetischer Nährstoffarmer agar, respectively. had a variable morphology their color ranged white to pale violet. Typical micro- macroconidia characterized. Temperature effect mycelial growth evaluated PDA 5 35 °C, with optimal temperature ranging between 16.8 26.4 °C. pathogenicity demonstrated inoculating plants (‘Lauranne’) grafted GF-677 or Rootpac 20 rootstocks. A significant reduction plant growth, wilting, xylem discoloration observed, being more susceptible than GF-677. Infections also reproduced using naturally infested soils. Almond inoculated all species, most aggressive.

Язык: Английский

Процитировано

5

Endophytic Fusarium and allied fungi from Rosa roxburghii in China DOI Creative Commons

H Zhang,

Y. J. Zeng, Tian‐Peng Wei

и другие.

Mycosphere, Год журнала: 2023, Номер 14(1), С. 2092 - 2207

Опубликована: Янв. 1, 2023

Fusarium usually implies plant pathogens.However, endophytic and allied fungi, the non-pathogenic species, share equal importance due to their excellent biosynthetic capacity wide range of biological activities.Rosa roxburghii is an economically important source medicine food.We have previously reported on diversity antimicrobial activity fungi from this plant.Finding several species that may represent new taxa requires further confirmation using multi-locus phylogenetic analyses combined with morphology.In study, 60 related isolates were obtained identified healthy R. roxburghii.Eleven novel four combinations are described illustrated based multi-gene thirteen genera morphological comparisons.The herein Albonectria guizhouensis, arbusti, F. caulendophyticum, caulicola, cili, qiannanense, radicigenum, rosae-roxburghii, rosendophyticum, rosiradicicola, Neocosmospora liupanshuiensis, whereas N. gannanensis, passiflorae, populicola, tumidisperma introduced as combinations.In addition, pathogenic associated Rosaceae summarized.The results study implications for accurately identifying Fusarium-linked developing potential applications these fungi.

Язык: Английский

Процитировано

7

Chemical control of the polyphagous shot hole borer beetle (PSHB, Euwallacea fornicatus) and Fusarium euwallaceae in American sweetgum (Liquidambar styraciflua) DOI Creative Commons

E. J. F. Roberts,

Trudy Paap, Francois Roets

и другие.

Journal of Plant Pathology, Год журнала: 2024, Номер 106(2), С. 457 - 468

Опубликована: Янв. 24, 2024

Abstract The polyphagous shot hole borer beetle (PSHB, Euwallacea fornicatus ) is a pest of global significance. PSHB an ambrosia which, together with its mutualistic fungi (including Fusarium euwallaceae ), can cause the death more than 100 tree species in invaded ranges. Management mostly relies on removal infested plant material. Chemical control options have been investigated only USA and Israel few species. This study evaluated four chemical treatments for therapeutic American sweetgum ( Liquidambar styraciflua South Africa (1) bifenthrin + surfactant (alcohol ethoxylate), (2) cypermethrin (vitamin E) salicylic acid, (3) emamectin benzoate, (4) propiconazole. Trees were inoculated F. mature females using novel technique to document fungal lesion development colony establishment success. reduced additional colonisation attempts treated trees by ca. 40%, while other had no effect. Colony success was all between 20 40%. Fungal growth inhibited after application propiconazole 36%. Gallery length number individuals successful colonies unaffected any treatments. These results indicate that partially effective. Successful management will likely depend combination strategies integrated program.

Язык: Английский

Процитировано

2

Early impact assessment of the paninvasive polyphagous shot hole borer beetle on commercial pear production DOI Creative Commons
Emma C. Neethling, Karyn Engelbrecht, Francois Roets

и другие.

Entomologia Experimentalis et Applicata, Год журнала: 2024, Номер unknown

Опубликована: Май 16, 2024

Abstract The polyphagous shot hole borer (PSHB) beetle, Euwallacea fornicatus (Eichhoff) (Coleoptera: Curculionidae, Scolytinae), and its phytopathogenic fungal symbiont ( Fusarium euwallaceae Freeman et al.) threaten commercial urban tree species worldwide. This pest–fungus complex has been newly discovered in the deciduous fruit industry (Western Cape, South Africa), where effect is still unknown. study explored impact of PSHB infestation on quality plant water‐use efficiency (WUE) – as indicated by carbon nitrogen stable isotope ratios commercially cultivated Packham's Triumph pear trees within first year invasion, well changes phenotypic plasticity (trait expression range). currently most evident traits, with a clear distinction between control densely attacked categories. Fruit leaf traits showed high variation significant change plasticity. Increased attack density was associated smaller, duller‐toned, sweeter at time harvest data tended towards reduced WUE. Producers can expect WUE even hosts without branch dieback, visible stress or extensive beetle breeding, especially orchards infestations persist beyond year. These findings necessitate additional research to describe long‐term impact, examine threat other crops cultivars assess need for adapted management harvesting methods.

Язык: Английский

Процитировано

1

Holo-omic applications to unveil microbiome shaping sustainable horticultural production DOI Creative Commons
Mohamed Ait-El-Mokhtar, Marouane Baslam

Frontiers in Sustainable Food Systems, Год журнала: 2023, Номер 7

Опубликована: Июнь 5, 2023

Plant-associated microorganisms play a key role in the future sustainability of terrestrial ecosystems. In nature, plants and their associated microbiome can form an assemblage species, considered interacting metaorganisms or holobionts. Horticultural plants, including vegetables, fruit berries, ornamentals live intimate association with complex diverse microbial communities that have evolved myriad cooperative competitive interaction mechanisms shape holobiont fitness. Nonetheless, our understanding these interactions shaping more horticulture communities, along relevance for host growth, fitness, stress resilience, health natural context remains sparse. this perspective, holo-omic landscape requires careful consideration study design integrates multi-omic data from both microbiota domains is promising approach to unveil interplay between two advance horticultural production. The analysis (meta)-omics phenotyping, mechanistic experiments model systems, revolutionizing research by enhancing ability understand structure core function plant-associated microbiome. These advancements are complemented improvements throughput accuracy DNA sequencing, enabling us delve deeper into genomes communities. Yet, many challenges remain. We focus review on potential holo-omics generate holistic perspective molecular networks, we further discuss implementation current limitations within horticulture. argue will pave way improve, food security safety, sustainability, breeding practices, development microbiota- host-tailored crops’ treatments increasing production efficiency.

Язык: Английский

Процитировано

1

Fungal Trunk Diseases Causing Decline of Apricot and Plum Trees in the Czech Republic DOI
Milan Špetík, Jakub Pečenka, Kateřina Štůsková

и другие.

Plant Disease, Год журнала: 2023, Номер 108(6), С. 1425 - 1436

Опубликована: Дек. 12, 2023

Fungal trunk diseases (FTDs) have been a significant threat to the global stone fruit industry. FTDs are caused by consortium of wood-decaying fungi. These fungi colonize woody tissues, causing cankers, dieback, and other decline-related symptoms in host plants. In this study, detailed screening fungal microbiota associated with decline trees Czech Republic was performed. The wood fragments plum apricot showing were subjected isolation. partial internal transcribed spacer region, beta-tubulin, translation elongation factor 1-α genes amplified from genomic DNA extracted cultures. All isolates classified, taxonomic placement pathogenic strains illustrated phylogenetic trees. most abundant genus Dactylonectria (31%), followed Biscogniauxia (13%), Thelonectria (10%), Eutypa (9%), Dothiorella (7%), Diplodia (6%), Diaporthe (6%). frequent endophytic Aposphaeria (17%). pathogenicity six species (Cadophora daguensis, Collophorina africana, Cytospora sorbicola, sarmentorum, lata, E. petrakii var. petrakii) four Prunus spp. evaluated, Koch’s postulates fulfilled. tested lesions on at least one sp. aggressive which largest all spp., D. sarmentorum. Japanese (Prunus salicina) almond (P. amygdalus) susceptible hosts, while armeniaca) trial.

Язык: Английский

Процитировано

1

Fusarium euwallaceae, symbiont of the paninvasive polyphagous shot hole borer, is pathogenic to cultivated but not wild olive trees in South Africa DOI Creative Commons
Casparus J. Crous, Francois Roets

Journal of Plant Pathology, Год журнала: 2024, Номер unknown

Опубликована: Июнь 11, 2024

Abstract Fusarium euwallaceae , vectored by the paninvasive polyphagous shot hole borer beetle ( Euwallacea fornicatus ), is an emerging threat to trees globally. Proven pathogenic cultivated deciduous fruits in South Africa, it recently has been isolated from European Olea europaea subsp. ) and native African cuspidata olive. This potentially threatens both commercial production species conservation. However, pathogenicity these unknown. Three isolates were used trials of F. towards olives. caused significantly longer lesions than controls vascular tissues inoculated olive trees, whereas no difference was observed for We therefore report first time that but not As this fungus occludes affected xylem tissues, thus water flow, fruit oil might be hampered during droughts, which are predicted increase severity frequency main region olives planted Africa.

Язык: Английский

Процитировано

0