Damage to foliage and stems caused by fungal pathogens in young eucalypt plantations in Zambia

Muimba-Kankolongo, Ambayeba; Nawa, I. N.; Roux, Jolanda; Ng’andwe, P.

doi:10.2989/sf.2009.71.3.1.913

Cited by 5 publications

(7 citation statements)

References 20 publications

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“…and only years later on native Syzygium sp., considered as a native host (Heath et al 2006). Because pathogenic fungi and related diseases of native trees in Zambia have been less studied, and diseases of Eucalyptus plantations have only recently received attention (Shakachite 1991; Roux et al 2005;Muimba-Kankolongo et al 2009), threats from these fungi for closely related non-native trees deserve further investigations.…”

Section: Discussionmentioning

confidence: 99%

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

et al. 2009

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Among fungi in the Cryphonectriaceae, Cryphonectria parasitica, the causal agent of chestnut blight, and Chrysoporthe spp., inducing stem cankers and death of plantation-grown Eucalyptus spp., constitute some of the most important tree pathogens. During a survey to determine diseases and related pathogens associated with native and non-native Myrtales in Zambia, two fungi resembling stem canker pathogens in the genus Chrysoporthe were recovered from Syzygium guineense and Eucalyptus grandis. We undertook this study to characterise the fungi, using DNA sequence comparisons and morphological features. Inoculation tests were also conducted in a greenhouse to assess their pathogenicity on Eucalyptus spp. Results showed distinct phenotypic differences between isolates collected from Zambia and existing species of Chrysoporthe, and phylogenetic analyses demonstrated that the Zambian isolates represent previously undescribed species of Chrysoporthe. These isolates, which have been named Chrysoporthe zambiensis sp. nov. and Chrysoporthe syzygiicola sp. nov., are only known from their anamorphic states. Both species were found to be pathogenic to Eucalyptus. The description of Chr. zambiensis and Chr. syzygiicola with teleomorph names, led to the new combination Chrysoporthe hodgesiana for the only anamorphic species in Chrysoporthe, Chrysoporthella hodgesiana, to ensure more stable and less confusing taxonomy for Chrysoporthe.

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Section: Discussionmentioning

confidence: 99%

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

et al. 2009

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“…In Zambia, a disease caused by a fungus identified as Pseudocercospora sp. was recently reported from E. grandis and E. cloeziana in young plantations (Muimba-Kankolongo et al, 2009). The exact identity of the pathogen, the severity of damage and the distribution of the disease in the country is, however, not known.…”

Section: Pseudocercospora Leaf Diseasementioning

confidence: 73%

“…has been reported from E. grandis W. Hill and E. cloeziana F. Muell in Chati and Kitwe in the Copperbelt region of Zambia (Muimba-Kankolongo et al, 2009). This is not surprising because A. eucalypti is a common pathogen of Eucalyptus spp.…”

Section: Corky Leaf Spotmentioning

confidence: 95%

“…Surveys in forestry plantations in the Copperbelt Province by Muimba-Kankolongo et al (2009) reported, MLD was found on several plants of both E. grandis and E. cloeziana, but at a lower incidence compared to other diseases. Because E. globulus, E. nitens and other species highly susceptible to MLD are not grown commercially in Zambia, severe outbreaks of the disease, such as those in South Africa (Hunter et al, 2009) are unlikely in the country.…”

Section: Mycosphaerella Leaf Diseasementioning

confidence: 99%

“…in the Republic of Congo (Roux et al, 2000). In Zambia, Cylindrocladium leaf disease was recently reported in young E. grandis plantations on the Copperbelt Province (Muimba-Kankolongo et al, 2009). Although this disease has not been common in older plantations, it is a potential threat to plantation establishment in the country.…”

Section: Cylindrocladium Leaf Diseasementioning

confidence: 99%

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Plantation forestry diseases in Zambia: Contributing factors and management options

Chungu¹,

Muimba-Kankolongo²,

Wingfield³

et al. 2010

Ann. For. Sci.

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Abstract• Plantation forestry in Zambia is based mainly on non-native Eucalyptus and Pinus species and constitutes an important component of the country's economy. The productivity of these plantations is, however, threatened by several factors, including fungal pathogens that reduce timber quality and cause tree mortality.• In this paper we present a review of diseases affecting plantation forestry and highlight factors that may favour their development and severity in the country.• Plantation health management in Zambia is seriously hampered by a general lack of information on pests and diseases affecting these plantations. In this regard, most research has been done more than 30 years ago, and very few pathogens have been identified to species level using modern identification techniques.• Recent surveys identified several previously unknown diseases of Eucalyptus spp. in the country, emphasizing the importance of renewed research on this topic. The impact of diseases associated with these pathogens has been exacerbated by poor plantation management, insufficient financial resources and lack of human capacity to deal with them.• Successful plantation management in Zambia will require increased and improved training of foresters regarding tree health issues, more effective quarantine, silvicultural practices, and importantly, the establishment of sound breeding and selection programmes. These will require considerable commitment from Government, commercial companies and research and educational organizations in the country.

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Identification of fungal pathogens occurring in eucalypt and pine plantations in Zambia by comparing DNA sequences

et al. 2010

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Damage to foliage and stems caused by fungal pathogens in young eucalypt plantations in Zambia

Cited by 5 publications

References 20 publications

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

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

Plantation forestry diseases in Zambia: Contributing factors and management options

Identification of fungal pathogens occurring in eucalypt and pine plantations in Zambia by comparing DNA sequences

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