Pest categorisation of Fusarium brachygibbosum

Abstract

The EFSA Plant Health Panel performed a pest categorisation of Fusarium brachygibbosum Padwick. F. brachygibbosum is a well-characterised fungal plant pathogen with opportunistic behaviour, mostly isolated along with other fungal pathogens in symptomatic hosts. It has been reported from Africa, America, Asia and Oceania where it is has been associated with a wide range of symptoms on approximately 25 cultivated and non-cultivated plant species. The pathogen has been reported in Italy in soil/marine sediments and in quinoa (Chenopodium quinoa) and durum wheat (Triticum turgidum subsp. durum) seeds. The pathogen is not included in the EU Commission Implementing Regulation 2019/2072. This pest categorisation focused on a selected range of host plant species on which F. brachygibbosum fulfilled Koch 0 s postulates and was formally identified by multilocus gene sequencing analysis. Host plants for planting, seed of host plants and soil and other substrates originating in infested third countries are main pathways for the entry of the pathogen into the EU. There are no reports of interceptions of F. brachygibbosum in the EU. Host availability and climate suitability factors occurring in the EU are favourable for the establishment of the pathogen in Member States (MSs). Phytosanitary measures are available to prevent the introduction of the pathogen into the EU. Additional measures are available to mitigate the risk of entry and spread of the pathogen in the EU. Despite the low aggressiveness observed in some reported hosts, it has been shown that, in the areas of its present distribution, the pathogen has a direct impact on certain hosts (e.g. almond, onion, soybean, tobacco) that are also relevant for the EU. The Panel concludes that F. brachygibbosum satisfies all the criteria to be regarded as a potential Union quarantine pest. However, high uncertainty remains regarding the distribution of the pathogen in the EU and some uncertainty exists about its potential impact in the EU. Specific surveys and re-evaluation of Fusarium isolates in culture collections could reduce these uncertainties.

Two Previously Unrecorded Fungal Species Isolated from Muui Island in Korea

“…Note: The overall morphological characteristics of 1-B-1 are similar to the previously reported strain of Fusarium brachygibbosum [ 14 , 15 ]. However, the length of macroconidia of 1-B-1 was larger than that of the strain of F. brachygibbosum (22.1–48.3 µm vs. 15.2–22.0 µm) [ 14 ].…”

Identification and pathogenicity of Fusarium species associated with wilting and crown rot in almond (Prunus dulcis)

“…are poorly understood, even though their role associated with trunk diseases is a current point of debate in several perennial crops such as avocado, citrus, grapevine or tree nuts 2,7,9,11,12,14 . To date the species Fusarium acuminatum, F. avenaceum, F. brachygibbosum, F. californicum, F. euwallaceae, and F. solani has been recovered from almonds showing cankers and vascular streaking worldwide 5,19,22,23 . In addition, F. oxysporum has isolated from almond hulls in California producing large quantities of styrene and isomers of 7-methyl-1,3,5-cyclooctatriene 24 .…”

Infection of a Nylon Foil Orbital Implant Due to Fusarium brachygibbosum and Lomentospora prolificans After Intranasal Methamphetamine Use

“…They are primarily plant pathogens that can cause botanic diseases such as root rot and head blight and occasionally cause opportunistic infections in animals such as sea turtles. [20][21][22][23][24] In humans, Fusarium species enter through the airways, followed by the skin at the site of tissue breakdown and possibly the mucosal membranes. They cause a broad spectrum of infections, including superficial keratitis, locally invasive, or disseminated infections, with the last occurring almost exclusively in severely immunocompromised patients.…”