First record of <i>Ceratocystis fimbriata</i> on <i>Carapa guianensis</i>

Halfeld-Vieira, Bernardo A.; Zilli, Jerri Édson; Nechet, K. de L.; Pereira, Gilmara Maria Duarte; Souza, G. R. de

doi:10.5197/j.2044-0588.2012.026.013

Cited by 6 publications

(3 citation statements)

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“…Recently, Ceratocystis fimbriata sensu lato (s.l. ), was reported on seeds and seedlings underneath naturally established andiroba trees (Halfeld-Vieira et al, 2012). In Brazil, C. fimbriata most commonly causes wilt-type diseases in the woody xylem of non-native timber and fruit-producing trees, such as Mangifera indica L. (mango) (Carvalho, 1938), Gmelina arborea Roxb.…”

Section: Introductionmentioning

confidence: 99%

A host specialized form of Ceratocystis fimbriata causes seed and seedling blight on native Carapa guianensis (andiroba) in Amazonian rainforests

et al. 2019

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a b s t r a c tCeratocystis fimbriata Ellis & Halsted recently was recorded causing seed and seedling blight on Carapa guianensis Aubl. (andiroba), a tree species native to the Amazon Rainforest and prized for its valuable timber and medicinal seed oil. C. fimbriata more commonly causes wilt type diseases in woody hosts, especially on non-native host trees. However, on andiroba the disease occurs on seedlings and seeds, affecting the species regeneration. We studied 73 isolates of C. fimbriata on andiroba from three regions of the Amazon Basin to see if they represented natural or introduced populations. Analysis of ITS rDNA sequences and phylogenetic analysis of mating type genes revealed new haplotypes of C. fimbriata from the Latin American Clade that were closely related to other Brazilian populations of the fungus. In mating experiments, andiroba isolates were inter-fertile with tester strains of C. fimbriata from Brazil and elsewhere, confirming that they belong to a single biological species. Using microsatellite markers, 14 genotypes and populations with intermediate levels of genetic variability were found, suggesting that the fungus is indigenous to the Amazon Basin. Inoculation tests indicated that the andiroba isolates are host-specialized on andiroba, supporting the proposition of the special form C. fimbriata f. sp. carapa.

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Section: Introductionmentioning

confidence: 99%

A host specialized form of Ceratocystis fimbriata causes seed and seedling blight on native Carapa guianensis (andiroba) in Amazonian rainforests

et al. 2019

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“…This pathogen is of great importance for the Ecuadorian forestry sector, as it is known to be a pathogen of woody species globally: Theobroma cacao (Baker & Harrington, 2005), GMelina arborea (Melina) (Ferreira et al, 2011;Belezaca-Pinargote et al, 2021a), Schizolobium parahybum (pachaco) (Geldenhuis et al, 2004;Belezaca-Pinargote et al, 2011), Acrocarpus fraxinifolius (pink cedar) (Belezaca-Pinargote et al, 2012), Eucalyptus spp. (Alves-Ferreira et al, 2006), Carapa guianensis (tangaré) (Halfeld-Vieira et al, 2012), Tectona grandis (teak) (Belezaca-Pinargote et al, 2018;Belezaca-Pinargote et al, 2020). Although the genus Fusarium has highly pathogenic species (Landeras et al, 2005), it did not generate significant pathogenesis in Melina plants during the 60 days of the experiment.…”

Section: Discussionmentioning

confidence: 96%

Ceratocystis Fimbriata

Belezaca-Pinargote

Solano-Apuntes

Díaz-Navarrete

2022

ijhs

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In Ecuador, GMelina arbórea (Melina) faces the disease “vascular wilt and stem rot”, with no known etiology so far. The aim was to describe the symptomatology and to know the cause of the disease. Three plantations (2.0, 3.5, and 5.0 years old) were studied in the Ecuadorian Humid Tropics, where three plots of 500 m2 were delimited, and the incidence and severity of the disease were evaluated using an arbitrary scale of five categories (1=healthy tree, and 5=dead tree). Three trees were dissected per plot and their tissues were analyzed in the laboratory where the fungi were isolated, morphologically identified, and inoculated (pathogenicity tests) on healthy Melina plants. The detection of initial disease symptoms at the field level was complex since trees have a high resilience capacity. In trees with easily visible symptoms, chlorosis, loss of turgor, dead growth buds, epicormic bud emission, and stem rot, the release of exudates from wounds and wilting was observed. Disease incidence was 24.1%, 7.1%, and 21.3% for 2.0-, 3.5-, and 5.0-year-old plantations, respectively. Disease severity detected in the Melina plantations ranged from 2 to 5 on a scale.

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“…(cacao) , Annona squamosa L. (sugar-apple) (Silveira et al, 2006), Carapa guianensis Aubl. (andiroba) (Halfeld-Vieira et al, 2012;Valdetaro et al, 2019), Tectona grandis L. f. (teak) (Firmino et al, 2012), Actinidia deliciosa (A. Chev) CF Lianget & AR Ferguson (kiwifruit) and Caryocar brasiliense Cambess. (pequi) .…”

Section: General Introductionmentioning

confidence: 99%

Genetic variability and host specialization among brazilian populations of Ceratocystis fimbriata s.l.

Fernandes¹

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Ceratocystis fimbriata is one of the most important woody plant pathogens worldwide. The fungi colonize the vascular tissue, causing stains on the wood and death of branches or whole plants. Due the wide range of hosts, it is possible that adapted populations of C. fimbriata have been selected to specific hosts and that there is high genetic and physiological variability within the pathogen population. The knowledge of physiological factors that determine host range and host specificity are important aspects for disease management. Therefore, the aims of this study were: (i) determine the specializing for their hosts of 11 isolates on eight hosts; (ii) to investigate the karyotype of isolates of the C. fimbriata species complex from different host plants and geographical origins in Brazil and; (iii) assessed the variability genetic of karyotyped isolates using retrotransposon-microsatellite amplified polymorphism (REMAP). In addition, the identity of the isolates was confirmed conducting multilocus phylogeny using DNA sequences of mating type genes, TEF-1α, and β-tubulin. The analysis based on the C. fimbriata microsatellite (SSR) profiles showed a separation of isolates according to the host. Based on the results of inoculation of 11 isolates on eight hosts, a wide variation in aggressiveness was found. The isolates that were used in this study were more aggressive in their respective hosts. Some hosts, however, were susceptible to isolates from other hosts. Considering the length of xylem lesion caused by C. fimbriata isolates, F. carica was the most susceptible to the isolates tested, followed by M. indica. Only T. cacao and C. guianensis isolates proved to be specialized by their hosts. Polymorphism in chromosome number and size was found, indicating the existence of genomic differences among isolates and occurrence of chromosomal rearrangements in the species complex. The number of chromosomes varied from six to eight and the estimated minimum chromosome sizes were estimated to be between 2.7 to 6.0 Mbp. Small polymorphic chromosomes were observed in all isolates, raising the hypothesis that they could be supernumerary chromosomes. Because chromosomal variation can be caused by transposable elements (TEs), we also assessed the variability of the same isolates using retrotransposon-microsatellite amplified polymorphism (REMAP) molecular marker. REMAP analysis of karyotyped isolates revealed genetic variability and isolates from the same host tend to group in a same cluster.Keywords: Chromosomal rearrangements. Genomic architecture. PFGE. Ceratocystis wilt. Cross-inoculations. Physiological variability.

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First record of Ceratocystis fimbriata on Carapa guianensis

Cited by 6 publications

References 3 publications

A host specialized form of Ceratocystis fimbriata causes seed and seedling blight on native Carapa guianensis (andiroba) in Amazonian rainforests

A host specialized form of Ceratocystis fimbriata causes seed and seedling blight on native Carapa guianensis (andiroba) in Amazonian rainforests

Ceratocystis Fimbriata

Genetic variability and host specialization among brazilian populations of Ceratocystis fimbriata s.l.

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