Hawaiian Ecosystems at Risk project (HEAR)

Neofusicoccum parvum
(Botryosphaeriaceae)

  
image of Neofusicoccum parvum image of Neofusicoccum parvum
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Species description or overview Taxonomy & nomenclature Impacts

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This fungal pathogen, cf. Neofusicoccum parvum (Botryosphaeriaceae), may have come to Florida from South African Syzygium where the species also attacks Eucalyptus spp., but the species has also been found in New Zealand, Venezuela and other places. By 2008, this pathogen was causing serious damage to Syzygium paniculatum in South Florida nurseries. Previously (prior to 2005), Syzygium paniculatum (an Asian species) in South Florida had been free of pest problems, apparently not affected by Puccinia psidii (though Syzygium paniculatum is strongly affected by the Puccinia psidii genotype in Hawaii).  It seems that this could be another serious fungal pathogen capable of travel via the Myrtaceae foliage and nursery trade. 


Species description or overview

Neofusicoccum parvum
Descriptions (on-host and in culture) of Neofusicoccum parvum, along with images and information about distinguishing characteristics, are presented by Centro de Recursos Microbiológicos (CREM), Universidade Nova de Lisboa. This document is the terminus of a key to the family Botryosphaeria.


Taxonomy & nomenclature

Neofusicoccum parvum information from ITIS
The Integrated Taxonomic Information System ITIS provides authoritative taxonomic information on Neofusicoccum parvum, as well as other plants, animals, fungi, and microbes of North America and the world.


Impacts

Neofusicoccum parvum causes a lethal dieback of Syzygium paniculatum in Florida
Syzygium paniculatum (Myrtaceae), a native of Australia, is an important plant in the South Florida ornamental trade where it is used in hedges and trimmed as topiaries. It was relatively free of diseases before Hurricane Wilma (2005), but has since been affected by a serious dieback disease, primarily in production nurseries. Symptoms include wilting and death of terminal and lateral branches, and extensive vascular discoloration. Neofusicoccum parvum has been reported as a pathogen on several species in the Myrtaceae, but Syzygium paniculatum is a new host record.


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