A diverse assemblage of Botryosphaeriaceae infect<i>Eucalyptus</i>in native and non-native environments

Slippers, Bernard; Burgess, Treena I.; Pavlic, Draginja; Ahumada, Rodrigo; Maleme, Happy M.; Mohali, Sari; Rodas, Carlos A.; Wingfield, M.J.

doi:10.2989/sf.2009.71.2.3.818

Cited by 54 publications

(57 citation statements)

References 47 publications

(55 reference statements)

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“…& P. Syd. (Coutinho et al 1998, Gryzenhout et al 2004, Roux & Wingfield 2009, Slippers et al 2009). The wide distribution and virulence of the latter cause the greatest negative impact on eucalypt trees both in native and introduced ranges , Mohali et al 2007 (Webb 1983, Old et al 1990, Smith et al 1994, while Lasiodiplodia theobromae (Pat.)…”

Section: Introductionmentioning

confidence: 99%

“…However, recent studies based on DNA sequence data have revealed that several strains previously identified as B. dothidea and N. ribis are in fact strains of N. parvum . Furthermore, several cryptic species have been identified within the L. theobromae species complex and four species are currently known to infect eucalypt trees, namely L. crassispora Burgess, Barber & Pegg and L. theobromae (Burgess et al 2006b, Slippers et al 2009). …”

Section: Introductionmentioning

confidence: 99%

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Emerging pests and diseases threaten Eucalyptus camaldulensis plantations in Sardinia, Italy

Deidda¹,

Buffa²,

Linaldeddu³

et al. 2016

iForest

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The rapid growth and environmental adaptability of Eucalyptus species has favored their global cultivation for pulpwood production. On the island of Sardinia, Italy, eucalypt plantations were established in the 20 th century primarily in areas reclaimed from marshland, but the trees are now grown all over the island as ornamentals or windbreaks, and for timber, pulp and honey production. In recent years, an unusual decline and mortality of unknown etiology has been observed in Eucalyptus camaldulensis (river red gum) plantations throughout the island. Given the ecological and economic importance of eucalypt ecosystems in Sardinia, a survey was carried out in 2013 to determine which insect pests and fungal pathogens are directly involved in these phenomena. Field surveys throughout the island revealed severe infestations with the red gum lerp psyllid (Glycaspis brimblecombei) at all 12 surveyed sites, with the greatest numbers of pre-imaginal stages and adults occurring between May and July. The adult population reached its peak in July, followed 2 months later by the peak population of its specific parasitoid, Psyllaephagus bliteus. Symptoms of leaf chlorosis, crown thinning, shoot and branch dieback, sunken cankers, epicormic shoots and exudations of kino gum were also observed at the 12 field sites. Symptomatic woody samples yielded fungal isolates representing three distinct families: Botryosphaeriaceae, Diaporthaceae and Valsaceae. Morphological and DNA sequence data revealed seven distinct fungal species, namely Diaporthe foeniculina, Neofusicoccum australe, N. luteum, N. mediterraneum, N. parvum, N. vitifusiforme and Valsa fabianae. Two putative new species of Cytospora were also identified. Neofusicoccum australe was the only species recovered from all 12 sites, with isolation frequencies of 51-95%. Pathogenicity trials revealed that all Neofusicoccum species except N. vitifusiforme are directly involved in the etiology of the observed decline in the E. camaldulensis population on Sardinia.

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Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Emerging pests and diseases threaten Eucalyptus camaldulensis plantations in Sardinia, Italy

Deidda¹,

Buffa²,

Linaldeddu³

et al. 2016

iForest

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“…These fungi infect plants via wounds or through natural plant openings such as buds, lenticels and stomata . Many species in the family have a wide range of plant hosts, including commercial fruit crops (Chen et al 2014;Slippers et al 2005;van Niekerk et al 2004), forest trees (Burgess et al 2006b;Slippers et al 2009), and plants in native woody ecosystems (Jami et al 2014;Mehl et al 2011;Pavlic et al 2007). These fungi occur in healthy plant tissues as latent pathogens and persist endophytically until stress occurs, after which disease symptoms can manifest .…”

Section: Introductionmentioning

confidence: 99%

Overlap of latent pathogens in the Botryosphaeriaceae on a native and agricultural host

et al. 2017

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Some species of the Botryosphaeriaceae are capable of infecting a broad range of host plants. We studied the species diversity of Botryosphaeriaceae associated with marula (Sclerocarya birrea subsp. caffra, Anacardiaceae) trees in South Africa over two seasons, as well as species common to both S. birrea and adjacent mango (Mangifera indica, Anacardiaceae) trees in a subset of sites. Gene flow amongst populations of Botryosphaeriaceae shared on these tree species was tested using microsatellite markers.Twelve species were identified from S. birrea and eleven species were found on M. indica trees. From isolations done in 2006, the dominant species on S. birrea was Neofusicoccum vitifusiforme, while N. parvum was the dominant species isolated from M. indica. Neofusicoccum parvum was dominant in isolations from both hosts in 2012. Isolates of Botryosphaeria fabicerciana, Lasiodiplodia mahajangana, L.pseudotheobromae, L. theobromae, N. mediterraneum and N. umdonicola were also collected from both hosts. Population genetic analyses on isolates of N. parvum suggested that three populations were present, each comprising isolates from both hosts. There was significant gene flow between N. parvum populations on these hosts. This ability to infect multiple hosts and to migrate amongst them facilitates the establishment and spread of species and genotypes of the Botryosphaeriaceae, such as N. parvum, in new areas.

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“…Species of Botryosphaeriaceae are important pathogens of fruit and forest trees (e.g., Sánchez et al 2003;Slippers et al 2009;Chen et al 2014b), but the diversity and role of these fungi on ornamental trees has not been extensively explored. Trees planted as ornamentals in cities tend to have low economic value, but they provide a wide range of ecosystem services.…”

Section: Introductionmentioning

confidence: 99%

Botryosphaeriaceae associated with the die-back of ornamental trees in the Western Balkans

Zlatković

Keča

Wingfield

et al. 2016

Antonie van Leeuwenhoek

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Extensive die-back and mortality of various ornamental trees and shrubs has been observed in parts of the Western Balkans region during the past decade. The disease symptoms have been typical of those caused by pathogens residing in the Botryosphaeriaceae. The aims of this study were to isolate and characterize Botryosphaeriaceae species associated with diseased ornamental trees in Serbia, Montenegro, Bosnia and Herzegovina. Isolates were initially characterized based on the DNA sequence data for the internal transcribed spacer rDNA and six major clades were identified. Representative isolates from each clade were further characterized using DNA sequence data for the translation elongation factor 1-alpha, b-tubulin-2 and large subunit rRNA gene regions, as well as the morphology of the asexual morphs. Ten species of the Botryosphaeriaceae were identified of which eight, i.e., Dothiorella sarmentorum, Neofusicoccum parvum, Botryosphaeria dothidea, Phaeobotryon cupressi, Sphaeropsis visci, Diplodia seriata, D. sapinea and D. mutila were known taxa. The remaining two species could be identified only as Dothiorella spp. Dichomera syn-asexual morphs of D. sapinea, Dothiorella sp. 2 and B. dothidea, as well as unique morphological characters for a number of the known species are described. Based on host plants and geographic distribution, the majority of Botryosphaeriaceae species found represent new records. The results of this study contribute to our knowledge of the distribution, host associations and impacts of these fungi on trees in urban environments.

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A diverse assemblage of Botryosphaeriaceae infectEucalyptusin native and non-native environments

Cited by 54 publications

References 47 publications

Emerging pests and diseases threaten Eucalyptus camaldulensis plantations in Sardinia, Italy

Emerging pests and diseases threaten Eucalyptus camaldulensis plantations in Sardinia, Italy

Overlap of latent pathogens in the Botryosphaeriaceae on a native and agricultural host

Botryosphaeriaceae associated with the die-back of ornamental trees in the Western Balkans

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