Colletotrichum theobromicola causes defoliation, stem girdling and death of mini-cuttings of eucalyptus in Brazil

Rodrigues, Ana Lucia Faria da Costa; Pinho, D. B.; Lisboa, Daniela O.; Nascimento, Rosilda Josefa do; Pereira, Olinto Liparini; Alfenas, Acelino C.; Furtado, Gleiber Quintão

doi:10.1590/s1982-56762014000400007

Cited by 17 publications

(5 citation statements)

References 11 publications

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“…Notes : Colletotrichum theobromicola causes leaf spot and stem girdling in nurseries of E. urophylla × E. grandis (“urograndis”) in the Brazilian states of Pará and Minas Gerais (Rodrigues et al. 2014).…”

Section: Resultsmentioning

confidence: 99%

Foliar pathogens of eucalypts

Crous¹,

Wingfield²,

Cheewangkoon³

et al. 2019

Studies in Mycology

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Species of eucalypts are commonly cultivated for solid wood and pulp products. The expansion of commercially managed eucalypt plantations has chiefly been driven by their rapid growth and suitability for propagation across a very wide variety of sites and climatic conditions. Infection of foliar fungal pathogens of eucalypts is resulting in increasingly negative impacts on commercial forest industries globally. To assist in evaluating this threat, the present study provides a global perspective on foliar pathogens of eucalypts. We treat 110 different genera including species associated with foliar disease symptoms of these hosts. The vast majority of these fungi have been grown in axenic culture, and subjected to DNA sequence analysis, resolving their phylogeny. During the course of this study several new genera and species were encountered, and these are described. New genera include: Lembosiniella (L. eucalyptorum on E. dunnii, Australia), Neosonderhenia (N. eucalypti on E. costata, Australia), Neothyriopsis (N. sphaerospora on E. camaldulensis, South Africa), Neotrichosphaeria (N. eucalypticola on E. deglupta, Australia), Nothotrimmatostroma (N. bifarium on E. dalrympleana, Australia), Nowamyces (incl. Nowamycetaceae fam. nov., N. globulus on E. globulus, Australia), and Walkaminomyces (W. medusae on E. alba, Australia). New species include (all from Australia): Disculoides fraxinoides on E. fraxinoides, Elsinoe piperitae on E. piperita, Fusculina regnans on E. regnans, Marthamyces johnstonii on E. dunnii, Neofusicoccum corticosae on E. corticosa, Neotrimmatostroma dalrympleanae on E. dalrympleana, Nowamyces piperitae on E. piperita, Phaeothyriolum dunnii on E. dunnii, Pseudophloeospora eucalyptigena on E. obliqua, Pseudophloeospora jollyi on Eucalyptus sp., Quambalaria tasmaniae on Eucalyptus sp., Q. rugosae on E. rugosa, Sonderhenia radiata on E. radiata, Teratosphaeria pseudonubilosa on E. globulus and Thyrinula dunnii on E. dunnii. A new name is also proposed for Heteroconium eucalypti as Thyrinula uruguayensis on E. dunnii, Uruguay. Although many of these genera and species are commonly associated with disease problems, several appear to be opportunists developing on stressed or dying tissues. For the majority of these fungi, pathogenicity remains to be determined. This represents an important goal for forest pathologists and biologists in the future. Consequently, this study will promote renewed interest in foliar pathogens of eucalypts, leading to investigations that will provide an improved understanding of the biology of these fungi.

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Section: Resultsmentioning

confidence: 99%

Foliar pathogens of eucalypts

Crous¹,

Wingfield²,

Cheewangkoon³

et al. 2019

Studies in Mycology

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“…Damm et al (2012a, b) and Weir et al (2012) suggested that GAPD H, BTUB2 or glutamine synthetase are among the most effective genes to distinguish single Colletotrichum species that are phylogenetically related. As previously reported (Rodrigues et al 2014;Salustiano et al 2014;Velho et al 2015), multilocus phylogenetic analysis of ITS, GAPDH and BTUB2 allowed for the successful identification of a collection of Colletotrichum spp. obtained from apple.…”

Section: Discussionmentioning

confidence: 55%

Colletotrichum fructicola is the dominant and one of the most aggressive species causing bitter rot of apple in Uruguay

Alaniz

Hernández

Mondino

2015

Trop. plant pathol.

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Forty-one isolates obtained from apple fruit exhibiting the typical symptoms of bitter rot in Uruguay were characterized based on molecular, phenotypic and pathogenicity data. Four species were identified based on the analysis of ITS, GAPDH and BTUB2 genes. The dominant species was Colletotrichum fructicola (33/41 isolates) followed by C. theobromicola (6/41 isolates), both belonging to the C. gloeosporioides species complex. The other species, with one isolate each, were C. melonis and Colletotrichum sp. both belonging to the C. acutatum species complex. Surprisingly, C. gloeosporioides and C. acutatum, commonly reported as the cause of bitter rot, were not found. Phenotypical traits were useful to assign the isolates to a species complex, but not to identify phylogenetic species. Isolates of all four species were able to cause the typical bitter rot disease, but the two species of the C. gloeosporioides species complex were the most aggressive based on lesion size.

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“…Regarding colonies colors, these were heterogeneous, with predominance of white color, possessing alterations of tones in the center and/or at the edges. L., Capsicum frutensens L., Annona muricata L. (Rojas et al, 2010;Weir et al, 2012;Álvarez et al, 2014;James et al, 2014;Rodrigues et al, 2014;Diao et al, 2017;Veloso et al, 2018;Costa et al, 2019). Although C. fructicola and C. theobromicola have been associated…”

Section: Morpho-cultural Characterizationmentioning

confidence: 99%