Taxonomy and pathogenicity of two novel Chrysoporthe species from Eucalyptus grandis and Syzygium guineense in Zambia

Chungu, Donald; Gryzenhout, Marieka; Muimba-Kankolongo, Ambayeba; Wingfield, Michael J.; Roux, Jolanda

doi:10.1007/s11557-009-0646-9

Cited by 27 publications

(22 citation statements)

References 31 publications

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“…Description of C. deuterocubensis now extends the number of known species in the genus to eight, including Chrysoporthe zambiensis, Chrysoporthe syzygiicola (Chungu et al 2009), C. austroafricana, C. cubensis, Chrysoporthe doradensis, C. inopina and Chrysoporthella hodgesiana ). Four of these have an apparent Central and South American distribution.…”

Section: Figmentioning

confidence: 96%

Multigene phylogenetic and population differentiation data confirm the existence of a cryptic species within Chrysoporthe cubensis

et al. 2010

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Chrysoporthe cubensis is one of the most important pathogens of Eucalyptus. Based on phylogenetic evidence and geographic origin, isolates of this fungus are known to reside in distinct 'South America' and 'Southeast Asia' clades. In this study, reproductive isolation amongst these isolates of C. cubensis was tested using gene flow statistics for 12 polymorphic loci, and to support these data, phylogenetic affiliations based on gene trees and a multigene phylogeny were used. Gene flow statistics between populations, and relative to the closely related Chrysoporthe austroafricana, were low and not significantly different (P < 0.05). Additionally, phylogenetic analyses of DNA sequence data for four gene regions convincingly distinguished the two subclades of C. cubensis. Isolates in the Southeast Asian subclade are described in the new species, Chrysoporthe deuterocubensis. Chrysoporthe cubensis and C. deuterocubensis represent closely related fungi that are thought to be native to South America and Southeast Asia, respectively. A technique is presented that allows for rapid differentiation between these species and that will aid in quarantine procedures to limit their spread to new environments.

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Section: Figmentioning

confidence: 96%

Multigene phylogenetic and population differentiation data confirm the existence of a cryptic species within Chrysoporthe cubensis

et al. 2010

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“…The Cryphonectriaceae includes fungi previously treated broadly in the Cryphonectria-Endothia complex (Gryzenhout et al 2009) and currently accommodates 12 genera (Gryzenhout et al 2009(Gryzenhout et al , 2010aBegoude et al 2010;Chungu et al 2010). The family includes important tree pathogens, such as Chrysoporthe austroafricana Gryzenh.…”

Section: Introductionmentioning

confidence: 99%

New records of the Cryphonectriaceae from southern Africa includingLatruncellus auroraegen. sp. nov.

Vermeulen¹,

Gryzenhout²,

Wingfield³

et al. 2011

Mycologia

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The Cryphonectriaceae accommodates some of the world's most important tree pathogens, including four genera known from native and introduced Myrtales in Africa. Surveys in the past 3 y in southern Africa have led to the discovery of cankers with fruiting structures resembling those of the Cryphonectriaceae on trees in the Myrtales in Namibia, South Africa, Swaziland and Zambia. These fungi were identified with morphological characteristics and DNA sequence data. For the first time we report Chrysoporthe austroafricana from Namibia and on Syzygium guineense and Holocryphia eucalypti in Swaziland on a Eucalyptus grandis clone. The host and geographic ranges of Celoporthe dispersa are expanded to include S. legatti in South Africa and S. guineense in Zambia. In addition a monotypic genus, Latruncellus aurorae gen. sp. nov., is described from Galpinia transvaalica (Lythraceae, Myrtales) in Swaziland. The present and other recent studies clearly emphasize the limited understanding of the diversity and distribution of fungi in the Cryphonectriaceae in Africa.

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“…Chrysoporthe austroafricana is also known to occur on Eucalyptus spp. in Malawi, Mozambique, South Africa and Zambia (Nakabonge et al 2006;Roux et al 2005), non-native Tibouchina in South Africa (Myburg et al 2002) and native Syzygium in South Africa (Heath et al 2006), Zambia (Chungu et al 2010) and Namibia (Vermeulen et al 2011).…”

Section: Discussionmentioning

confidence: 99%

Endophytic Cryphonectriaceae on native Myrtales: Possible origin of Chrysoporthe canker on plantation-grown Eucalyptus

Maússe-Sitoe

Rodas²,

Wingfield

et al. 2016

Fungal Biology

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Chrysoporthe austroafricana (Cryphonectriaceae) is a damaging canker pathogen onEucalyptus species in Southern Africa. Recent studies have shown that the fungus occurs on native Syzygium species and that it has apparently undergone a host range expansion from these native trees to infect non-native Eucalyptus. The aim of this study was to consider whether C. austroafricana and other Cryphonectriaceae might exist as endophytes in native Myrtaceae, providing a source of inoculum to infect non-native Myrtales. Healthy branches were collected from Myrtaceae in 1 Mozambique, incubated in florist foam, allowed to dry gradually and monitored for the appearance of fruiting bodies resembling species in the Cryphonectriaceae.Isolates were identified based on DNA sequence data. Two species in the Cryphonectriaceae were obtained, representing the first evidence that species in the Cryphonectriaceae occur as endophytes on native Myrtales, thus providing a source of inoculum to infect non-native and susceptible trees. This has important implications regarding the movement of planting stock used by ornamental tree and forestry enterprises.

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Taxonomy and pathogenicity of two novel Chrysoporthe species from Eucalyptus grandis and Syzygium guineense in Zambia

Cited by 27 publications

References 31 publications

Multigene phylogenetic and population differentiation data confirm the existence of a cryptic species within Chrysoporthe cubensis

Multigene phylogenetic and population differentiation data confirm the existence of a cryptic species within Chrysoporthe cubensis

New records of the Cryphonectriaceae from southern Africa includingLatruncellus auroraegen. sp. nov.

Endophytic Cryphonectriaceae on native Myrtales: Possible origin of Chrysoporthe canker on plantation-grown Eucalyptus

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