Symptomatic Citrus trees reveal a new pathogenic lineage in Fusarium and two new Neocosmospora species

Sandoval-Denis, Marcelo; Guarnaccia, Vladimiro; Polizzi, G.; Crous, Pedro W.

doi:10.3767/persoonia.2018.40.01

Cited by 111 publications

(71 citation statements)

References 69 publications

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“…Fusarium solani and F. proliferatum were reported as the main pathogens of some plants, such as citrus, poplar, mango, associated with the disease of dry root rot, dieback, fruit malformation, etc. (Chao, Zeng, & Sun, 1998;Lu, 2010;Malikoutsaki-Mathioudi, Bourbos, & Skoudridakis, 1987;Polizzi, Magnano di San Lio, & Catara, 1992;Sandoval-Denis et al, 2018;Yaseen & D'Onghia, 2012). The researches of the opportunistic pathogens of F. avenaceum, F. sporotrichioides and F. tricinctum were somewhat limited in crop diseases and secondary metabolite toxicity (Brown & Proctor, 2013;Chang & Zhang, 1989;Chen & Wang, 1982;Cheng & Guo, 2016;Christensen, 1975 & Strobel, 1992;Logrieco, Rizzo, Ferracane, & Ritieni, 2002;Shan et al, 2017;Stahl, Vanderhoef, & Siegel, 1973;Strongman, Strunz, Giguère, Yu, & Calhoun, 1988).…”

Section: Discussionmentioning

confidence: 99%

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Fusarium species in declining wild apple forests on the northern slope of the Tian Shan Mountains in north‐western China

et al. 2019

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Wild apple forests in the Tian Shan Mountains in north‐western China have been adversely affected by an unknown disease in recent years. Symptoms attributed to this disease that affects wild apple trees include xylem browning and dieback which are suggestive of infection by Fusarium species. Therefore, the research team conducted the first survey for Fusarium in the afflicted wild apple forests. Twig samples with symptoms of xylem browning and dieback were collected in the Xinyuan, Gongliu, Yining and Huocheng Counties of Xinjiang Uighur Autonomous Region in China. Based on phylogenetic analyses and morphological observation, sixty strains of Fusarium accounted for 48% of the total number of fungi isolated from samples were subsequently classified into six species including twenty‐four F. avenaceum, seventeen F. solani, ten F. tricinctum, five F. proliferatum, two F. sporotrichioides and two unfamiliar Fusarium sp. 1. The five previously known species of Fusarium were then tested for pathogenicity to leaves and twigs in vitro. The results indicated that all of the species, except for F. tricinctum, can cause obvious lesions on the leaves of host plants and on the twigs of Fuji and wild apple. This is the first report of Fusarium species pathogenicity in Xinjiang wild apple forests, confirming a new host for these pathogens in this study.

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Section: Discussionmentioning

confidence: 99%

“…These elements including spore-forming structures macroconidia and microconidia from PDA and SNA were observed in 7-to 15-day-old cultivation, and the length and width of at least 30 conidia per spore type were measured (Gupta, Misra, & Gaur, 2010;Laurence et al, 2011;Nirenberg, 1976;Sandoval-Denis, Guarnaccia, & Polizzi, 2018 …”

Section: Morphological Studymentioning

confidence: 99%

Fusarium species in declining wild apple forests on the northern slope of the Tian Shan Mountains in north‐western China

et al. 2019

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“…In 2016, knowledge about the diversity and distribution of fungi in association with citrus was enhanced when a survey performed in citrus‐growing areas of Europe revealed the presence of different pathogens, saprobes and endophytes, including four Phyllosticta spp. (Crous et al ., , ; Guarnaccia and Crous, , ; Guarnaccia et al ., , 2017b; Sandoval‐Denis et al ., ). Two of these species, P .…”

Section: Distribution and Host Associationsmentioning

confidence: 99%

“…In 2016, knowledge about the diversity and distribution of fungi in association with citrus was enhanced when a survey performed in citrus-growing areas of Europe revealed the presence of different pathogens, saprobes and endophytes, including four Phyllosticta spp. (Crous et al, 2016Crous, 2017, 2018;Guarnaccia et al, 2017aGuarnaccia et al, , 2017bSandoval-Denis et al, 2018). Two of these species, P. paracapitalensis and P. paracitricarpa, were described as new and were isolated from fresh asymptomatic leaves in Italy and Spain, respectively, and from leaf litter of lemon in Greece.…”

Section: I St R I B U T I O N a N D H Ost A Ssoc I At I O N Smentioning

confidence: 99%

Phyllosticta citricarpa and sister species of global importance to Citrus

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Gehrmann

Silva

et al. 2019

Molecular Plant Pathology

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Summary Several Phyllosticta species are known as pathogens of Citrus spp., and are responsible for various disease symptoms including leaf and fruit spots. One of the most important species is P. citricarpa, which causes a foliar and fruit disease called citrus black spot. The Phyllosticta species occurring on citrus can most effectively be distinguished from P. citricarpa by means of multilocus DNA sequence data. Recent studies also demonstrated P. citricarpa to be heterothallic, and reported successful mating in the laboratory. Since the domestication of citrus, different clones of P. citricarpa have escaped Asia to other continents via trade routes, with obvious disease management consequences. This pathogen profile represents a comprehensive literature review of this pathogen and allied taxa associated with citrus, focusing on identification, distribution, genomics, epidemiology and disease management. This review also considers the knowledge emerging from seven genomes of Phyllosticta spp., demonstrating unknown aspects of these species, including their mating behaviour. Taxonomy Phyllosticta citricarpa (McAlpine) Aa, 1973. Kingdom Fungi, Phylum Ascomycota, Class Dothideomycetes, Order Botryosphaeriales, Family Phyllostictaceae, Genus Phyllosticta, Species citricarpa. Host range Confirmed on more than 12 Citrus species, Phyllosticta citricarpa has only been found on plant species in the Rutaceae. Disease symptoms P. citricarpa causes diverse symptoms such as hard spot, virulent spot, false melanose and freckle spot on fruit, and necrotic lesions on leaves and twigs. Useful websites DOE Joint Genome Institute MycoCosm portals for the Phyllosticta capitalensis (https://genome.jgi.doe.gov/Phycap1), P. citriasiana (https://genome.jgi.doe.gov/Phycit1), P. citribraziliensis (https://genome.jgi.doe.gov/Phcit1), P. citrichinaensis (https://genome.jgi.doe.gov/Phcitr1), P. citricarpa (https://genome.jgi.doe.gov/Phycitr1, https://genome.jgi.doe.gov/Phycpc1), P. paracitricarpa (https://genome.jgi.doe.gov/Phy27169) genomes. All available Phyllosticta genomes on MycoCosm can be viewed at https://genome.jgi.doe.gov/Phyllosticta.

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“…O'Donnell et al (2015) reviewed the status of the molecular identification of fusaria and recommended that TEF1 worked well for estimating species diversity within the genus. As presently defined, Fusarium encompasses 23 species complexes and nine monotypic lineages (Laurence et al, 2011;Geiser et al, 2013;O'Donnell et al, 2013;Sandoval-Denis et al, 2018). Multiple Fusarium spp.…”

Section: Discussionmentioning

confidence: 99%

Phylogenetic relationships and virulence assays of Fusarium secorum from sugar beet suggest a new look at species designations

et al. 2019

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Fusarium spp. are responsible for significant yield losses in sugar beet (Beta vulgaris) with Fusarium oxysporum f. sp. betae most often reported as the primary causal agent. Recently, a new species, F. secorum, was reported to cause disease in sugar beet but little is known on the range of virulence within F. secorum or how this compares to the virulence and phylogenetic relationships previously reported for Fusarium pathogens of sugar beet. To initiate this study, partial translation elongation factor 1‐α (TEF1) sequences from seven isolates of F. secorum were obtained and the data were added to a previously published phylogenetic tree that includes F. oxysporum f. sp. betae. Unexpectedly, the F. secorum strains nested into a distinct group that included isolates previously reported as F. oxysporum f. sp. betae. These results prompted an expanded phylogenetic analysis of TEF1 sequences from genomes of publicly available Fusarium spp., resulting in the additional discovery that some isolates previously reported as F. oxysporum f. sp. betae are F. commune, a species that is not known to be a sugar beet pathogen. Inoculation of sugar beet with differing genetic backgrounds demonstrated that all Fusarium strains have a significant range in virulence depending on cultivar. Taken together, the data suggest that F. secorum is more widespread than previously thought. Consequently, future screening for disease resistance should rely on isolates representing the full diversity of the Fusarium population that impacts sugar beet.

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Symptomatic Citrus trees reveal a new pathogenic lineage in Fusarium and two new Neocosmospora species

Cited by 111 publications

References 69 publications

Fusarium species in declining wild apple forests on the northern slope of the Tian Shan Mountains in north‐western China

Fusarium species in declining wild apple forests on the northern slope of the Tian Shan Mountains in north‐western China

Phyllosticta citricarpa and sister species of global importance to Citrus

Phylogenetic relationships and virulence assays of Fusarium secorum from sugar beet suggest a new look at species designations

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